HVAC Repair Cost in Cairns (2026)
Estimated HVAC-repair cost ranges for Cairns, in Australian dollars, localized from Australia national base ranges using Cairns labour-cost data (SA4 employee-income data (ABS Personal Income 2022-23)). Every figure is an Estimated SA4 region-level range, never a currency-converted price from another country. Reviewed July 2026. In Cairns, HVAC repair jobs typically run $75–$6,455 AUD (2026), depending on the equipment and the fault.
Most common repairs & local costs
Every problem we price for Australia, grouped by appliance — the most-searched problem in each group first; expand for the rest. All ranges are in Australian dollars, localized to Cairns labour costs.
Gas Furnace 11 problems priced
Gas Furnace repairs in Cairns typically run $140–$4,150 AUD (2026).
Gas Furnace not heating / blowing cold air
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Ignition lockout fix - flame sensor / rectification probe cleaned or replaced and burner cleaned | $205–$385 AUD | Pro recommended |
| Gas control valve replacement (Honeywell VR8300 / SIT 840 type) | $350–$600 AUD | Pro recommended |
| Ignition control board (PCB) replacement | $445–$875 AUD | Pro recommended |
Base: Energy Safe Victoria, published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Show 10 more gas furnace problems 10
Gas Furnace won't turn on / no power
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Wall controller / thermostat replacement | $240–$505 AUD | Pro recommended |
| Control board (PCB) replacement where the unit is completely dead | $445–$875 AUD | Pro recommended |
| Power supply fault repair - blown fuse, tripped RCD/circuit, or damaged supply lead at the unit | $165–$415 AUD | Pro recommended |
Base: published rates from 5 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Gas Furnace short cycling (turns on and off)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Return-air filter replacement and airflow restriction cleared | $205–$370 AUD | DIY possible |
| Flame sensor / rectification probe replacement (unit lights then drops out after a few seconds) | $205–$385 AUD | Pro recommended |
| Overheat / high-limit switch replacement and flue restriction rectification | $260–$625 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Gas Furnace igniter (hot surface ignitor) replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Spark ignitor / ignition electrode replacement | $165–$385 AUD | Pro recommended |
| Ignition control pack replacement (combined PCB and igniter module) | $515–$1,060 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Gas Furnace flame sensor cleaning / replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Flame sensor cleaned and rectification current tested (no part replaced) | $140–$275 AUD | Pro recommended |
| Flame sensor / rectification probe and lead replaced | $165–$385 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Gas Furnace blower motor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Blower fan motor replacement (single/multi-speed induction motor) | $385–$720 AUD | Pro recommended |
| Complete blower assembly / fan kit replacement (motor, mounting plate and capacitor, or variable-speed ECM) | $645–$1,060 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Gas Furnace gas valve replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Gas control valve replacement (single-stage Honeywell VR8300 / SIT 840) | $350–$600 AUD | Pro recommended |
| Gas valve replacement plus full AS 4575 re-commission and carbon monoxide test | $445–$740 AUD | Pro recommended |
Base: published rates from 5 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Gas Furnace control board replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Ignition control PCB replacement (current, in-stock board) | $385–$720 AUD | Pro recommended |
| Obsolete board changeover - reconditioned or combined PCB-and-igniter control pack fitted | $645–$1,060 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Gas Furnace cracked heat exchanger replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Heat exchanger replacement on a supported unit | $1,105–$2,580 AUD | Pro recommended |
| Condemned unit replaced instead of exchanger (cracked exchanger on an obsolete heater) | $1,845–$4,150 AUD | Pro recommended |
Base: Energy Safe Victoria, published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Gas Furnace pilot light / thermocouple won't stay lit
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Thermocouple replacement on a standing-pilot heater | $165–$295 AUD | Pro recommended |
| Intermittent pilot module / pilot assembly replacement | $370–$690 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Gas Furnace noisy or loud (banging, rumbling, squealing)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Noisy blower bearing - fan motor replacement | $385–$720 AUD | Pro recommended |
| Rattle and vibration fix - blower wheel cleaned and balanced, loose panels and duct connections re-secured | $165–$415 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Central Air Conditioning 10 problems priced
Central Air Conditioning repairs in Cairns typically run $120–$6,455 AUD (2026).
Central Air Conditioning not cooling / blowing warm air
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Diagnostic call-out plus return-air filter service and indoor/outdoor coil clean to restore cooling capacity | $240–$570 AUD | Pro recommended |
| Refrigerant leak located, joint or flare repaired, system evacuated and re-gassed | $415–$1,475 AUD | Pro recommended |
| Outdoor condensing unit compressor replaced (recovery, new compressor, filter drier, vacuum, recharge, commissioning) | $1,800–$3,505 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Show 9 more central air conditioning problems 9
Central Air Conditioning won't turn on / no power
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Diagnostic attendance and rectification of the power supply: tripped safety switch, failed circuit breaker or faulty rotary isolator at the outdoor unit | $205–$570 AUD | Pro recommended |
| Failed control PCB (main board) replaced in the ducted indoor or outdoor unit | $385–$1,290 AUD | Pro recommended |
| Failed run capacitor replaced so the compressor or fan will start | $150–$415 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Central Air Conditioning capacitor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Outdoor unit compressor run capacitor replaced | $150–$415 AUD | Pro recommended |
| Indoor fan coil (roof-space air handler) fan motor capacitor replaced | $210–$515 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Central Air Conditioning compressor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Ducted outdoor unit compressor replaced with recovery, new filter drier, vacuum dehydration, pressure test and full recharge | $1,800–$3,505 AUD | Pro recommended |
| Legacy R22 ducted system: compressor replaced or whole outdoor condensing unit swapped because the original refrigerant is no longer supported | $3,045–$6,455 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Central Air Conditioning refrigerant leak repair / recharge
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Leak test with nitrogen/electronic detector, flare or brazed joint repaired, evacuate and re-gas to nameplate charge | $415–$1,200 AUD | Pro recommended |
| Leaking indoor coil in the roof-space fan coil replaced (coil not repairable in situ) | $1,385–$3,320 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Central Air Conditioning frozen evaporator coil
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Airflow fault corrected: return-air filter and grille service, chemical clean of the indoor coil and fan barrel, controlled defrost and recommission | $275–$600 AUD | Pro recommended |
| Undercharge diagnosed: leak located and repaired, system evacuated and re-gassed | $415–$1,200 AUD | Pro recommended |
| Failed indoor blower motor replaced (no airflow across the coil) | $600–$1,660 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Central Air Conditioning clogged condensate drain / leaking water
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Condensate drain line cleared at the fan coil (wet/dry vacuum or flush) and drain pan cleaned | $120–$325 AUD | DIY possible |
| Condensate drain re-piped with a new fall, plus safety tray and float switch fitted after a ceiling overflow | $325–$785 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Central Air Conditioning contactor / relay replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Compressor contactor replaced in the outdoor unit | $260–$555 AUD | Pro recommended |
| Contactor plus control-circuit repair on an older fixed-speed ducted outdoor unit (contactor, overload/relay and burnt terminations) | $385–$875 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Central Air Conditioning condenser fan motor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Outdoor condenser fan motor replaced, with its run capacitor and blade balance check | $415–$1,105 AUD | Pro recommended |
| Condenser fan capacitor only replaced (motor tests good) | $150–$385 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Central Air Conditioning short cycling (turns on and off)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Diagnostic plus airflow, thermostat or sensor fault rectified (filter and return air cleared, thermostat relocated or replaced, room sensor renewed) | $150–$570 AUD | Pro recommended |
| Low refrigerant charge tripping the low-pressure cut-out: leak located, repaired and system re-gassed | $415–$1,200 AUD | Pro recommended |
| Failed capacitor or contactor causing the compressor to draw high current and trip out | $230–$570 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Heat Pump 10 problems priced
Heat Pump repairs in Cairns typically run $130–$2,675 AUD (2026).
Heat Pump not heating
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Reversing-valve solenoid coil replacement on the outdoor unit (system stuck in cooling) | $260–$570 AUD | Pro recommended |
| Full four-way reversing valve body replacement (recover gas, cut out valve, braze in new body, evacuate and recharge) | $570–$1,615 AUD | Pro recommended |
| Outdoor main / control PCB replacement (unit will not call for heat) | $460–$1,290 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Show 9 more heat pump problems 9
Heat Pump not cooling
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Locate and repair a refrigerant leak, then recharge with R32/R410A | $415–$1,290 AUD | Pro recommended |
| Outdoor condenser fan motor replacement | $370–$830 AUD | Pro recommended |
| Chemical clean of the roof-space fan coil and return-air filter (airflow starvation / iced coil) | $185–$460 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Heat Pump stuck in defrost / frozen outdoor unit
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Defrost thermistor / outdoor coil sensor replacement | $165–$445 AUD | Pro recommended |
| Reversing-valve solenoid coil replacement (valve not completing its stroke out of defrost) | $260–$600 AUD | Pro recommended |
| Outdoor main PCB replacement (defrost logic board) | $460–$1,290 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Heat Pump reversing valve replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Solenoid coil only (valve body proven good) | $260–$600 AUD | Pro recommended |
| Complete four-way valve body changeout with recovery, brazing, evacuation and recharge | $570–$1,615 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Heat Pump defrost control board replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Outdoor main / control PCB replacement (the board that runs defrost on an Australian reverse-cycle system) | $460–$1,290 AUD | Pro recommended |
| Defrost thermistor replacement first (the fault most often mistaken for a dead board) | $165–$445 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Heat Pump capacitor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Run / start capacitor replacement in the outdoor unit | $130–$395 AUD | Pro recommended |
| Capacitor plus contactor replaced together on an older fixed-speed ducted outdoor unit | $260–$480 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Heat Pump refrigerant leak repair / recharge
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Leak detection plus repair of the leaking joint, then full weighed recharge | $415–$1,290 AUD | Pro recommended |
| Nitrogen pressure test / leak search only, no repair authorised on the day | $260–$645 AUD | Pro recommended |
| Major leak: indoor fan-coil replacement or re-running the interconnecting pipe set in the roof | $875–$2,400 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Heat Pump compressor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Compressor replacement in the ducted outdoor unit | $1,105–$2,675 AUD | Pro recommended |
| Minor compressor repair short of a changeout — contactor, terminals, run capacitor and supply wiring rectified with the charge recovered and reinstated | $1,105–$1,660 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Heat Pump outdoor fan motor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Outdoor condenser fan motor replacement | $370–$830 AUD | Pro recommended |
| Indoor ducted fan-coil blower motor replacement (roof-space unit) | $555–$1,475 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Heat Pump short cycling (turns on and off)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Diagnostic call-out plus airflow restoration — indoor coil and filter clean, return-air and outdoor-clearance correction | $165–$385 AUD | Pro recommended |
| Refrigerant leak find and repair plus weighed-in regas where low charge is tripping the pressure switch | $275–$830 AUD | Pro recommended |
| Start/run capacitor or pressure-switch replacement, or re-siting a wall controller reading the wrong air | $165–$425 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductless Mini-Split 10 problems priced
Ductless Mini-Split repairs in Cairns typically run $90–$2,305 AUD (2026).
Ductless Mini-Split not cooling
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Refrigerant leak repair and R32 recharge on a wall-mounted split | $370–$1,015 AUD | Pro recommended |
| Outdoor condenser fan motor replacement on the split's outdoor unit | $350–$785 AUD | Pro recommended |
| Deep chemical clean of the indoor head and outdoor coil (airflow-starved system) | $165–$415 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Show 9 more ductless mini-split problems 9
Ductless Mini-Split not heating
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Reversing-valve solenoid coil replacement (split stuck in cooling) | $260–$570 AUD | Pro recommended |
| Leak repair and recharge where low refrigerant is killing heating capacity | $370–$1,015 AUD | Pro recommended |
| Outdoor control PCB replacement (no heat call reaching the compressor) | $415–$1,105 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductless Mini-Split refrigerant leak repair / recharge
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Leak detection, remake the leaking flare joint, evacuate and weigh in a new R32 charge | $370–$1,015 AUD | Pro recommended |
| Service-port Schrader valve replacement and top-up (leak at the valve core) | $260–$555 AUD | Pro recommended |
| Indoor head coil replacement or re-running the interconnecting pipe set through the wall | $830–$2,165 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductless Mini-Split compressor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Compressor replacement in the split's outdoor unit | $1,015–$2,305 AUD | Pro recommended |
| Compressor changeout on a smaller wall-mounted split (2–3.5 kW class, cheapest compressor and fittings kit) | $555–$1,385 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductless Mini-Split indoor blower / fan motor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Indoor fan motor replacement in the wall-mounted head | $385–$875 AUD | Pro recommended |
| Cross-flow barrel fan replacement (rattling, out-of-balance or mould-fouled blower wheel) | $260–$600 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductless Mini-Split indoor head leaking water
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Clear the blocked condensate drain line and flush the indoor drain tray | $135–$370 AUD | Pro recommended |
| Re-pitch or re-run the condensate drain, or fit a condensate pump | $230–$600 AUD | Pro recommended |
| Full indoor-unit chemical clean where a mould-fouled tray and barrel are causing the overflow | $185–$445 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductless Mini-Split error code / flashing light fault
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Attendance and fault-code diagnosis (flashing operation/timer lamp read-out) | $90–$230 AUD | Pro recommended |
| U4 communication fault: repair or replace the indoor-outdoor interconnecting cable / terminal block | $205–$600 AUD | Pro recommended |
| E7 outdoor fan motor fault: outdoor fan motor replacement | $350–$785 AUD | Pro recommended |
| L5 / E5 inverter overcurrent or compressor lock: inverter PCB replacement (or condemn the outdoor unit) | $480–$2,215 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductless Mini-Split control board / pcb replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Indoor head control PCB replacement | $260–$690 AUD | Pro recommended |
| Outdoor main / inverter PCB replacement | $505–$2,215 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductless Mini-Split outdoor unit not running
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Run capacitor replacement (older non-inverter splits that hum but will not start) | $130–$395 AUD | Pro recommended |
| Isolator switch / outdoor supply wiring fault repaired by a licensed electrician | $185–$555 AUD | Pro recommended |
| Outdoor fan motor replacement (unit starts then shuts down on high pressure) | $350–$785 AUD | Pro recommended |
| Outdoor control PCB replacement (no output to compressor or fan) | $460–$1,290 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductless Mini-Split musty or mouldy smell from the indoor unit
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Premium split-system deep clean of the indoor head — coil, barrel fan and drain pan, for mould and odour | $140–$370 AUD | Pro recommended |
| Standard split-system clean and sanitise — filters, fascia, drain flush — where the odour is mild | $90–$230 AUD | DIY possible |
| Strip-down steam clean with the barrel fan removed, plus drain-line flush, where biofilm has hardened | $185–$385 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Boiler 10 problems priced
Boiler repairs in Cairns typically run $165–$3,875 AUD (2026).
Boiler no heat / not firing up
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Diagnostic attendance on a gas hydronic boiler — fault-find, reset lockout, re-pressurise and purge air | $230–$415 AUD | Pro recommended |
| Ignition / flame-sensing electrode replacement on the boiler burner | $305–$570 AUD | Pro recommended |
| Main control PCB replacement on a wall-hung hydronic boiler | $740–$1,570 AUD | Pro recommended |
Base: Energy Safe Victoria, published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Show 9 more boiler problems 9
Boiler no hot water
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Diverter valve / domestic-hot-water actuator replacement on a combi hydronic boiler | $460–$920 AUD | Pro recommended |
| Plate heat exchanger descale or replacement (scaled domestic-hot-water side) | $600–$1,290 AUD | Pro recommended |
| Repair of the separate instantaneous gas hot water unit (pilot/gas valve fault) — the far more common Australian case | $325–$600 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Boiler losing pressure
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Expansion vessel re-charge and system re-pressurise with leak test | $230–$385 AUD | Pro recommended |
| Pressure relief valve (PRV) replacement | $275–$515 AUD | Pro recommended |
| Trace and repair a circuit leak — radiator tail, lockshield or compression joint | $230–$645 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Boiler leaking water
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Radiator valve / lockshield / TRV replacement with partial drain-down and refill | $230–$645 AUD | Pro recommended |
| Internal boiler leak repair — pump head gasket, PRV weep or pipework union inside the case | $305–$740 AUD | Pro recommended |
| Failed heat exchanger or corroded boiler body — exchanger replacement, or the repair-versus-replace decision | $1,475–$3,875 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Boiler kettling (banging / rumbling noise)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Chemical power flush of the hydronic circuit | $1,050–$1,890 AUD | Pro recommended |
| Fit a magnetic system filter, dose inhibitor and re-balance the circuit | $415–$875 AUD | Pro recommended |
| Heat exchanger descale and burner clean during a full boiler service | $370–$830 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Boiler pilot light won't stay lit
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Thermocouple replacement on a standing-pilot boiler or gas heater | $165–$350 AUD | Pro recommended |
| Pilot assembly and injector clean or replacement | $230–$505 AUD | Pro recommended |
| Gas valve replacement where the pilot will not hold flame | $415–$875 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Boiler keeps switching off (short cycling)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Low-flow / overheat cycling fix — strainer and filter clean, full air purge, circuit re-balance | $230–$480 AUD | Pro recommended |
| Overheat limit thermostat or NTC flow/return sensor replacement | $275–$600 AUD | Pro recommended |
| Seized or weak circulator pump causing overheat trip — pump replacement | $690–$1,335 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Boiler circulator pump replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Like-for-like circulator pump replacement (Grundfos UPS / UP class) | $645–$1,385 AUD | Pro recommended |
| Upgrade to a high-efficiency variable-speed pump with new isolation valves and system re-fill | $875–$1,660 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Boiler expansion vessel / tank replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Re-charge the existing expansion vessel air side and re-pressurise the system | $205–$370 AUD | Pro recommended |
| Replace the boiler's internal or wall-mounted expansion vessel (12–24 L) | $415–$875 AUD | Pro recommended |
| Fit an external 24–35 L vessel where the internal one cannot be accessed or is undersized | $555–$1,155 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Boiler ignition fault / lockout
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Lockout reset with flame-sense electrode clean or replacement and combustion re-check | $260–$515 AUD | Pro recommended |
| Ignition control module or main PCB replacement | $480–$1,475 AUD | Pro recommended |
| Gas valve replacement after repeated lockout, with gas pressure and combustion re-test | $515–$1,015 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Thermostat & Controls 10 problems priced
Thermostat & Controls repairs in Cairns typically run $110–$2,950 AUD (2026).
Thermostat & Controls smart thermostat installation
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Fit a WiFi adaptor to an existing split system for app and voice control | $230–$445 AUD | Pro recommended |
| Retrofit a smart zone controller (AirTouch 5 or similar) to an existing ducted system | $1,750–$2,950 AUD | Pro recommended |
| Add wireless room temperature sensors to a smart controller | $140–$315 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Show 9 more thermostat & controls problems 9
Thermostat & Controls blank screen / won't power on
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Diagnose a dead wall controller — power, fuse, batteries and comms cable checks | $140–$295 AUD | Pro recommended |
| Replace a failed wall controller (e.g. Brivis Networker on a gas ducted heater) | $325–$505 AUD | Pro recommended |
| Replace the controller-to-unit comms cable or connector where the controller itself is sound | $185–$415 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Thermostat & Controls won't reach set temperature
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Service the heater and replace the return-air filter | $230–$415 AUD | Pro recommended |
| Replace or relocate the temperature sensor the controller is reading from | $205–$415 AUD | Pro recommended |
| Fix the zone or duct fault starving the room the controller is measuring | $260–$555 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Thermostat & Controls thermostat wiring / c-wire repair
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Trace and repair a damaged controller cable (rodent damage, crushed cable, failed terminations) | $210–$480 AUD | Pro recommended |
| Run a new controller cable from the wall plate to the unit through the roof space | $370–$830 AUD | Pro recommended |
| Repair the 240V supply or isolator to the indoor unit where the controller has no power | $205–$515 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Thermostat & Controls won't connect to wi-fi
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Re-pair the WiFi adaptor and re-onboard the app account | $110–$275 AUD | DIY possible |
| Replace a failed WiFi interface on a split or ducted unit | $230–$460 AUD | Pro recommended |
| Fit a WiFi gateway or bridge to a controller that has no built-in WiFi | $350–$645 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Thermostat & Controls clicks but system won't respond
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Replace the ignition PCB on a gas ducted heater that clicks but will not fire | $295–$445 AUD | Pro recommended |
| Replace the igniter or flame sensor behind a repeated click-and-lockout | $260–$445 AUD | Pro recommended |
| Replace the wall controller where the button click registers but nothing runs | $325–$505 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Thermostat & Controls wrong temperature reading / miscalibrated
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Replace or relocate the room temperature sensor the controller reads | $185–$370 AUD | Pro recommended |
| Add a wireless room sensor so the system measures the room, not the return air | $155–$315 AUD | Pro recommended |
| Replace the wall controller where its on-board thermistor has drifted | $325–$505 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Thermostat & Controls zone control board / damper repair
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Diagnose the zone system and replace a failed zone motor or re-terminate at the zone board | $260–$555 AUD | Pro recommended |
| Replace the zone control module or board (MyAir control box, ZoneSwitch-style module) | $460–$1,290 AUD | Pro recommended |
| Replace the whole zone control head — module plus touchscreen or console | $1,290–$2,765 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Thermostat & Controls heating or cooling won't shut off
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Wall-controller diagnosis and low-voltage control-wiring repair (shorted or pinched controller cable) | $165–$445 AUD | Pro recommended |
| Stuck contactor, relay or fan-control replacement so the unit stops running continuously | $205–$645 AUD | Pro recommended |
| Indoor PCB / control board replacement where the board no longer drops its output | $275–$1,015 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Thermostat & Controls moving a thermostat to a different wall
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Relocate the wall controller to a new wall with a new low-voltage cable run and mounting block | $325–$830 AUD | Pro recommended |
| Move the controller a short distance on the existing cable, plus make-good of the old opening | $165–$445 AUD | Pro recommended |
| Wireless / RF room controller conversion where a new cable run is impractical | $260–$690 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Air Handler 10 problems priced
Air Handler repairs in Cairns typically run $90–$5,535 AUD (2026).
Air Handler blower not running
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Indoor fan capacitor or fan relay replaced in the roof-space fan coil | $210–$515 AUD | Pro recommended |
| Indoor unit control PCB replaced (no fan output) | $415–$1,290 AUD | Pro recommended |
| Indoor blower (fan coil) motor replaced | $600–$1,660 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Show 9 more air handler problems 9
Air Handler blower motor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Ducted fan coil blower motor replaced in the roof space (OEM motor, blower wheel refit and balance) | $600–$1,660 AUD | Pro recommended |
| Easier-access indoor fan motor replaced (wall-mounted, bulkhead or under-floor fan coil) | $460–$1,015 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Air Handler weak airflow
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Return-air filter and grille serviced plus chemical clean of the indoor coil and fan barrel | $275–$690 AUD | Pro recommended |
| Collapsed, crushed or disconnected flexible duct in the roof space reconnected or replaced | $275–$1,015 AUD | Pro recommended |
| Failed zone motor / motorised damper actuator replaced on a zoned ducted system | $370–$920 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Air Handler leaking water (drain pan / coil)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Blocked condensate drain cleared and drain pan cleaned at the fan coil | $120–$325 AUD | DIY possible |
| Drain re-piped with proper fall, safety tray and float switch fitted, plus ceiling made good | $350–$875 AUD | Pro recommended |
| Iced coil thawing and overflowing the pan: refrigerant leak located, repaired and system re-gassed | $415–$1,200 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Air Handler frozen evaporator coil
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Coil defrosted and airflow restored: filter and return-air grille serviced, indoor coil and fan barrel chemically cleaned, system recommissioned | $275–$600 AUD | Pro recommended |
| Low charge confirmed: leak located and repaired, system evacuated and re-gassed | $415–$1,200 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Air Handler noisy or loud (rattling / humming)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Fan barrel (blower wheel) cleaned and rebalanced, loose casing, panels and mounts refastened, anti-vibration mounts renewed | $230–$555 AUD | Pro recommended |
| Worn indoor fan motor or bearings replaced (grinding or squealing) | $600–$1,660 AUD | Pro recommended |
| Outdoor condenser fan motor or damaged fan blade replaced (noise traced outside) | $505–$1,105 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Air Handler electric heat strip / auxiliary heat replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| In-duct electric heater element or its safety contactor / hi-limit thermal cut-out replaced | $415–$1,200 AUD | Pro recommended |
| Ducted heating unit replaced outright (Australian ducted gas heater) where the ducted heat source is beyond repair | $1,750–$5,535 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Air Handler control board replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Indoor fan coil control PCB replaced on a ducted system | $415–$1,290 AUD | Pro recommended |
| Inverter control board plus filter board or wall controller replaced together on a premium ducted system | $740–$2,030 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Air Handler evaporator coil replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Indoor (evaporator) coil replacement with recovery, braze-in and weighed-in recharge | $1,290–$3,135 AUD | Pro recommended |
| Leak find and repair on the indoor coil plus regas, where the coil is still repairable | $415–$1,290 AUD | Pro recommended |
| Warranty coil replacement — part supplied under warranty, labour, recovery and refrigerant billed | $645–$1,660 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Air Handler musty smell from the vents
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Chemical or steam clean of the ducted indoor coil, plus drain pan and condensate line flush | $255–$720 AUD | Pro recommended |
| Full ducted system clean — coil, return-air box, outlets and drain | $275–$830 AUD | Pro recommended |
| Anti-microbial / mould treatment and filter replacement as a follow-up to the clean | $90–$295 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductwork & Vents 10 problems priced
Ductwork & Vents repairs in Cairns typically run $75–$6,085 AUD (2026).
Ductwork & Vents leaky duct sealing / repair
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Seal a leaking flexible duct join or tear (foil-backed tape, clamp and re-support) | $185–$325 AUD | DIY possible |
| Replace a single perished or rodent-damaged duct run | $250–$460 AUD | Pro recommended |
| Camera inspection of the duct network to find where the loss is | $75–$140 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Show 9 more ductwork & vents problems 9
Ductwork & Vents ductwork replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Replace the whole flexible duct network on an existing ducted system | $1,290–$5,165 AUD | Pro recommended |
| Replace part of the network — a few runs plus the branch takeoffs | $460–$1,385 AUD | Pro recommended |
| Install ductwork where there was none (converting to a ducted system) | $2,215–$6,085 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductwork & Vents uneven airflow between rooms (balancing)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Airflow balance across the outlets — measure each vent and reset the dampers | $260–$570 AUD | Pro recommended |
| Fix the duct fault behind one starved room (crushed, kinked or pulled-off run) | $230–$555 AUD | Pro recommended |
| Replace the failed zone motor that is holding one zone shut | $240–$405 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductwork & Vents disconnected / collapsed duct repair
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Rejoin and re-support a duct that has pulled off the main line | $185–$325 AUD | DIY possible |
| Rejoin plus replace the collapsed section and install suspension straps | $325–$690 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductwork & Vents duct damper repair
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Replace one failed zone motor (damper actuator) | $240–$405 AUD | Pro recommended |
| Replace zone motors on two or more zones in the same visit | $405–$1,060 AUD | Pro recommended |
| Replace the whole motorised zone barrel where the damper blade or barrel is damaged | $385–$690 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductwork & Vents vent / register replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Swap a damaged plastic ceiling vent or floor register like-for-like | $85–$205 AUD | DIY possible |
| Replace several outlets across the house in one visit, upgrading to metal diffusers | $370–$1,015 AUD | Pro recommended |
| Replace an outlet where the ceiling or floor opening has to be re-cut and made good | $230–$515 AUD | Pro recommended |
Base: published rates from 2 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductwork & Vents duct insulation replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Replace individual runs with higher R-value duct (R0.6/R1.0 up to R1.5 or R2.0) | $250–$460 AUD | Pro recommended |
| Re-duct the whole network to a higher R rating | $1,385–$5,165 AUD | Pro recommended |
| Re-wrap and re-seal insulation at the plenum, branch box and main trunk | $325–$785 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductwork & Vents duct cleaning
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Clean the ducts of a standard 3–4 bedroom home | $295–$505 AUD | Pro recommended |
| Clean a small unit or two-bedroom system | $205–$295 AUD | Pro recommended |
| Clean a large 5+ bedroom or two-storey system including return air and sanitising | $505–$875 AUD | Pro recommended |
| Camera inspection add-on before or after cleaning | $75–$140 AUD | Pro recommended |
Base: published rates from 2 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductwork & Vents adding a vent or duct run to a room
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| New supply branch run and ceiling outlet cut into an existing trunk | $275–$830 AUD | Pro recommended |
| Add an outlet plus a motorised zone so the new room can be controlled separately | $460–$1,385 AUD | Pro recommended |
| Add a return-air grille where the system is return-starved after the extra outlet | $275–$920 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Ductwork & Vents noisy ducts (banging, popping, whistling)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Duct bracing, re-hanging and sealing at the trunk to stop banging and popping on start-up | $185–$505 AUD | Pro recommended |
| Static-pressure correction — free or enlarge a restricted return, re-balance dampers and reset fan speed | $260–$690 AUD | Pro recommended |
| Replace a collapsed or whistling flexible duct run and refit rattling registers | $250–$1,105 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Oil Furnace 10 problems priced
Oil Furnace repairs in Cairns typically run $205–$5,070 AUD (2026).
Oil Furnace won't start / won't fire
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Fixed-price diagnosis and service of a diesel-fired heater or hydronic furnace (Eberspacher / Webasto / Belief) | $225–$460 AUD | Pro recommended |
| Gas ducted heater will-not-start diagnosis and minor repair (the Australian equivalent of a furnace no-start call) | $230–$445 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Show 9 more oil furnace problems 9
Oil Furnace not heating / no heat
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Full strip-down burner service on a diesel-fired heater or hydronic furnace (carbon and soot build-up) | $300–$830 AUD | Pro recommended |
| Gas ducted heater burner clean plus ignition or gas valve fault (the local analog Australians actually book) | $260–$690 AUD | Pro recommended |
| Heat exchanger replacement where the exchanger has cracked or failed | $1,105–$2,580 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Oil Furnace nozzle / oil filter replacement (tune-up)
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Fuel filter, fuel line and burner service kit on a diesel-fired heater | $230–$645 AUD | Pro recommended |
| Return-air filter replacement on a ducted heating system | $230–$460 AUD | DIY possible |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Oil Furnace ignition electrode / transformer replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Glow pin / glow plug replacement on a diesel-fired heater | $415–$785 AUD | Pro recommended |
| Ignition / flame-sense electrode replacement on a gas ducted heater or hydronic boiler | $260–$515 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Oil Furnace oil burner motor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Burner assembly or combustion-air fan motor replacement on a diesel-fired heater | $690–$1,385 AUD | Pro recommended |
| Combustion / inducer fan motor replacement on a gas ducted heater | $415–$920 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Oil Furnace cad cell / primary control replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| ECU / burner controller replacement on a diesel-fired heater | $740–$1,245 AUD | Pro recommended |
| Ignition control PCB or wall controller replacement on a gas ducted heater | $295–$645 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Oil Furnace puffback / soot cleanup
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Full ducted-system clean after soot or smoke contamination | $240–$645 AUD | Pro recommended |
| Burner and heat-exchanger soot clean on the heater itself | $230–$555 AUD | Pro recommended |
| Large or multi-storey duct clean where contamination spread through the house | $415–$740 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Oil Furnace fuel oil pump replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Dosing / fuel pump replacement on a diesel-fired heater | $460–$810 AUD | Pro recommended |
| Fuel line, inline filter and pump strainer service where the pump itself is serviceable | $230–$515 AUD | DIY possible |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Oil Furnace blower motor replacement
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Ducted heater circulating fan / blower motor replacement | $350–$720 AUD | Pro recommended |
| Large-capacity or ECM blower motor with capacitor, in a tight roof or underfloor space | $645–$1,385 AUD | Pro recommended |
| Ducted fan head motor replacement on a diesel-fired ducted heater | $275–$645 AUD | Pro recommended |
Base: published rates from 3 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
Oil Furnace cracked heat exchanger / combustion chamber
| Most common repair | Typical total (AUD) | DIY? |
|---|---|---|
| Heat exchanger replacement on a ducted warm-air heater | $1,105–$2,580 AUD | Pro recommended |
| Condemn and changeover — new ducted heater onto the existing ductwork after a cracked exchanger is found | $2,030–$5,070 AUD | Pro recommended |
| Combustion and carbon-monoxide safety test that confirms or clears a suspected cracked exchanger | $205–$445 AUD | Pro recommended |
Base: published rates from 4 Australian repair companies (2026-07) · Localized via ABS median employee income (Cairns vs Australia) · Reviewed July 2026 · Estimated
How we price this for Cairns
We take each Australia national base range and multiply it by a local index of 0.92, built from SA4 employee-income data (ABS Personal Income 2022-23) (there is no Australia equivalent of the U.S. Regional Price Parity, so the price and overhead terms are held at the national baseline):
index = 0.92
The wage term uses Cairns vs Australia. Parts ship at national prices, so only the labour share moves with the SA4 region. All figures are in Australian dollars — we never convert prices from other countries; the Australia base ranges come from Australian sources. Full weights and vintages are on the methodology page.
Taxes & licensing in Queensland
See the Queensland hub for the full local rules & taxes breakdown.
All HVAC repair problems
- Gas Furnace — Not heating / blowing cold air
- Gas Furnace — Won't turn on / no power
- Gas Furnace — Short cycling (turns on and off)
- Gas Furnace — Igniter (hot surface ignitor) replacement
- Gas Furnace — Flame sensor cleaning / replacement
- Gas Furnace — Blower motor replacement
- Gas Furnace — Gas valve replacement
- Gas Furnace — Control board replacement
- Gas Furnace — Cracked heat exchanger replacement
- Gas Furnace — Pilot light / thermocouple won't stay lit
- Gas Furnace — Noisy or loud (banging, rumbling, squealing)
- Central Air Conditioning — Not cooling / blowing warm air
- Central Air Conditioning — Won't turn on / no power
- Central Air Conditioning — Capacitor replacement
- Central Air Conditioning — Compressor replacement
- Central Air Conditioning — Refrigerant leak repair / recharge
- Central Air Conditioning — Frozen evaporator coil
- Central Air Conditioning — Clogged condensate drain / leaking water
- Central Air Conditioning — Contactor / relay replacement
- Central Air Conditioning — Condenser fan motor replacement
- Central Air Conditioning — Short cycling (turns on and off)
- Heat Pump — Not heating
- Heat Pump — Not cooling
- Heat Pump — Stuck in defrost / frozen outdoor unit
- Heat Pump — Reversing valve replacement
- Heat Pump — Defrost control board replacement
- Heat Pump — Capacitor replacement
- Heat Pump — Refrigerant leak repair / recharge
- Heat Pump — Compressor replacement
- Heat Pump — Outdoor fan motor replacement
- Heat Pump — Short cycling (turns on and off)
- Ductless Mini-Split — Not cooling
- Ductless Mini-Split — Not heating
- Ductless Mini-Split — Refrigerant leak repair / recharge
- Ductless Mini-Split — Compressor replacement
- Ductless Mini-Split — Indoor blower / fan motor replacement
- Ductless Mini-Split — Indoor head leaking water
- Ductless Mini-Split — Error code / flashing light fault
- Ductless Mini-Split — Control board / PCB replacement
- Ductless Mini-Split — Outdoor unit not running
- Ductless Mini-Split — Musty or mouldy smell from the indoor unit
- Boiler — No heat / not firing up
- Boiler — No hot water
- Boiler — Losing pressure
- Boiler — Leaking water
- Boiler — Kettling (banging / rumbling noise)
- Boiler — Pilot light won't stay lit
- Boiler — Keeps switching off (short cycling)
- Boiler — Circulator pump replacement
- Boiler — Expansion vessel / tank replacement
- Boiler — Ignition fault / lockout
- Thermostat & Controls — Smart thermostat installation
- Thermostat & Controls — Blank screen / won't power on
- Thermostat & Controls — Won't reach set temperature
- Thermostat & Controls — Thermostat wiring / C-wire repair
- Thermostat & Controls — Won't connect to Wi-Fi
- Thermostat & Controls — Clicks but system won't respond
- Thermostat & Controls — Wrong temperature reading / miscalibrated
- Thermostat & Controls — Zone control board / damper repair
- Thermostat & Controls — Heating or cooling won't shut off
- Thermostat & Controls — Moving a thermostat to a different wall
- Air Handler — Blower not running
- Air Handler — Blower motor replacement
- Air Handler — Weak airflow
- Air Handler — Leaking water (drain pan / coil)
- Air Handler — Frozen evaporator coil
- Air Handler — Noisy or loud (rattling / humming)
- Air Handler — Electric heat strip / auxiliary heat replacement
- Air Handler — Control board replacement
- Air Handler — Evaporator coil replacement
- Air Handler — Musty smell from the vents
- Ductwork & Vents — Leaky duct sealing / repair
- Ductwork & Vents — Ductwork replacement
- Ductwork & Vents — Uneven airflow between rooms (balancing)
- Ductwork & Vents — Disconnected / collapsed duct repair
- Ductwork & Vents — Duct damper repair
- Ductwork & Vents — Vent / register replacement
- Ductwork & Vents — Duct insulation replacement
- Ductwork & Vents — Duct cleaning
- Ductwork & Vents — Adding a vent or duct run to a room
- Ductwork & Vents — Noisy ducts (banging, popping, whistling)
- Oil Furnace — Won't start / won't fire
- Oil Furnace — Not heating / no heat
- Oil Furnace — Nozzle / oil filter replacement (tune-up)
- Oil Furnace — Ignition electrode / transformer replacement
- Oil Furnace — Oil burner motor replacement
- Oil Furnace — Cad cell / primary control replacement
- Oil Furnace — Puffback / soot cleanup
- Oil Furnace — Fuel oil pump replacement
- Oil Furnace — Blower motor replacement
- Oil Furnace — Cracked heat exchanger / combustion chamber
Return to the Australia HVAC repair guide.
Reviewed by a Red Seal–certified appliance technician who also holds a Technical Safety BC gas ticket (Gas-C) and an ODS/halocarbon refrigerant ticket (CFC/HCFC/HFC).