HVAC Repair Cost in Baltimore, MD (2026)
Estimated HVAC-repair cost ranges for the Baltimore metro, localized from national base ranges using Baltimore labor-cost data. Every figure is an Estimated metro-level range. Reviewed July 2026. In Baltimore, HVAC repairs typically run $20–$13,275 (2026), depending on the appliance and fault.
Covers: Columbia, Towson and nearby communities in the Baltimore metropolitan area. Enter any local ZIP in a problem page's calculator to confirm your localized range.
$75–$765 in Baltimore, MD (localized) — gas furnace not heating / blowing cold air. Change appliance, problem, tier, or brand below.
| Most common repair | Typical total | DIY? |
|---|---|---|
| Hot-surface igniter replacement (installed) | $155–$355 | DIY possible |
| Flame sensor cleaning or replacement | $75–$255 | DIY possible |
| Gas valve replacement | $305–$765 | Pro recommended |
| Integrated furnace control (IFC) board replacement | $305–$715 | Pro recommended |
Plus a typical service-call / diagnostic fee of $75–$150, often credited toward the repair.
Pick a quality tier for a class-typical estimate, or a specific brand to override it (brand adjusts the parts portion only). Enter a ZIP or Canadian postal code to localize to your metro's labor costs. Everything updates without a page reload; no data leaves your browser except the shard lookup.
What a diagnostic visit costs in Baltimore
ObservedFees published by 2 Baltimore-area repair companies · verified 2026-07-24
$90–$99published diagnostic / service-call fee
Compiled from fees these companies post publicly on their own websites — observed figures, not localized estimates. We don't accept payment for inclusion, and we don't name or rank providers.
Taxes & licensing in Maryland
See the Maryland hub for the full local rules & taxes breakdown.
Most common repairs & local costs
Every problem we price, grouped by appliance — the most-searched problem in each group first; expand for the rest. All ranges are localized to Baltimore labor costs.
Furnace repair cost in Baltimore 11 problems priced
Furnace repairs in Baltimore typically run $20–$5,105 (2026).
Gas Furnace not heating / blowing cold air
| Most common repair | Typical total | DIY? |
|---|---|---|
| Hot-surface igniter replacement (installed) | $155–$355 | DIY possible |
| Flame sensor cleaning or replacement | $75–$255 | DIY possible |
| Gas valve replacement | $305–$765 | Pro recommended |
| Integrated furnace control (IFC) board replacement | $305–$715 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
More gas furnace problems 10
Gas Furnace won't turn on / no power
| Most common repair | Typical total | DIY? |
|---|---|---|
| Blown control-board fuse replacement | $75–$155 | DIY possible |
| 24V transformer replacement | $130–$305 | DIY possible |
| Thermostat wiring / C-wire fault repair | $75–$205 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Gas Furnace short cycling (turns on and off)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Flame sensor cleaning | $75–$205 | DIY possible |
| Pressure switch replacement | $155–$355 | Pro recommended |
| High-limit switch replacement / airflow-restriction fix | $75–$305 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Gas Furnace igniter (hot surface ignitor) replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Hot-surface igniter — professional installed replacement | $155–$305 | DIY possible |
| Hot-surface igniter — DIY part-only replacement | $20–$50 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Gas Furnace flame sensor cleaning / replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Flame sensor cleaning (no replacement) | $75–$205 | DIY possible |
| Flame sensor replacement | $90–$255 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Gas Furnace blower motor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| PSC blower motor replacement (single-speed) | $355–$815 | Pro recommended |
| ECM / variable-speed blower motor replacement (+ module) | $615–$1,530 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Gas Furnace gas valve replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Gas valve replacement (standard single-stage) | $305–$665 | Pro recommended |
| Gas valve replacement (multi-stage / modulating, high-end) | $460–$815 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Gas Furnace control board replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Universal control board replacement | $255–$460 | Pro recommended |
| OEM proprietary control board replacement | $410–$715 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Gas Furnace cracked heat exchanger replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Cracked heat exchanger replacement (standard job) | $1,020–$3,065 | Pro recommended |
| Heat exchanger replacement (hard-access / high-labor case) | $3,065–$5,105 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Gas Furnace pilot light / thermocouple won't stay lit
| Most common repair | Typical total | DIY? |
|---|---|---|
| Thermocouple cleaning/replacement | $155–$305 | DIY possible |
| Pilot assembly clean/replace (standing-pilot models) | $155–$355 | Pro recommended |
| Gas valve replacement (standing-pilot, root cause of last resort) | $305–$715 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Gas Furnace noisy or loud (banging, rumbling, squealing)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Inducer motor replacement | $410–$1,125 | Pro recommended |
| Blower motor/wheel service (bearings, cleaning, balancing) | $155–$970 | Pro recommended |
| Blower belt replacement (older belt-drive furnaces) | $100–$305 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Central Air Conditioning repair cost in Baltimore 10 problems priced
Central Air Conditioning repairs in Baltimore typically run $75–$2,860 (2026).
Central Air Conditioning not cooling / blowing warm air
| Most common repair | Typical total | DIY? |
|---|---|---|
| Dual-run (run/start) capacitor replacement | $205–$460 | DIY possible |
| Refrigerant leak repair + recharge (R-410A) | $305–$920 | Pro recommended |
| Contactor / relay replacement | $205–$460 | DIY possible |
| Condenser fan motor replacement | $305–$920 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
More central air conditioning problems 9
Central Air Conditioning won't turn on / no power
| Most common repair | Typical total | DIY? |
|---|---|---|
| Dual-run capacitor replacement | $205–$460 | DIY possible |
| Contactor replacement | $205–$460 | DIY possible |
| Low-voltage transformer / control-fuse replacement | $155–$355 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Central Air Conditioning capacitor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Dual-run (run/start) capacitor replacement | $205–$460 | DIY possible |
| Capacitor replacement + hard-start kit (weak-compressor start assist) | $355–$665 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Central Air Conditioning compressor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Central air / home AC compressor replacement (installed) | $1,840–$2,860 | Pro recommended |
| Hard-start kit install (cheaper stopgap, not a true compressor fix) | $155–$305 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Central Air Conditioning refrigerant leak repair / recharge
| Most common repair | Typical total | DIY? |
|---|---|---|
| Leak detection + braze/patch repair (line or coil joint) | $410–$1,225 | Pro recommended |
| Refrigerant recharge only (R-410A top-off, leak already sealed or minor) | $305–$920 | Pro recommended |
| Evaporator / condenser coil replacement (leak is in the coil itself) | $1,225–$2,655 | Pro recommended |
Base: 3 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Central Air Conditioning frozen evaporator coil
| Most common repair | Typical total | DIY? |
|---|---|---|
| Airflow fix (filter change / blower/duct restriction cleared) | $100–$305 | DIY possible |
| Refrigerant recharge (low charge causing the freeze) | $305–$920 | Pro recommended |
| Coil cleaning / minor coil repair (frost/ice damage to fins) | $410–$1,020 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Central Air Conditioning clogged condensate drain / leaking water
| Most common repair | Typical total | DIY? |
|---|---|---|
| Condensate drain line clear / flush | $75–$255 | DIY possible |
| Condensate pump replacement | $255–$450 | Pro recommended |
| Float / safety-switch replacement | $100–$225 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Central Air Conditioning contactor / relay replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Contactor / relay replacement | $205–$460 | DIY possible |
| Contactor + capacitor combo replacement | $305–$560 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Central Air Conditioning condenser fan motor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Condenser fan motor replacement (standard PSC motor) | $305–$715 | Pro recommended |
| Condenser fan motor replacement (ECM/high-efficiency motor) | $715–$1,225 | Pro recommended |
| Fan blade replacement only (motor healthy, blade bent/cracked) | $100–$225 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Central Air Conditioning short cycling (turns on and off)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Dual-run capacitor replacement | $205–$460 | DIY possible |
| Refrigerant recharge (low charge triggers low-pressure cutoff cycling) | $305–$920 | Pro recommended |
| Thermostat recalibration / relocation or replacement | $130–$355 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Heat Pump repair cost in Baltimore 10 problems priced
Heat Pump repairs in Baltimore typically run $100–$4,595 (2026).
Heat Pump not heating
| Most common repair | Typical total | DIY? |
|---|---|---|
| Refrigerant charge check + recharge (R-410A) | $355–$1,020 | Pro recommended |
| Reversing valve replacement | $410–$1,530 | Pro recommended |
| Defrost control board replacement | $205–$665 | Pro recommended |
| Auxiliary/electric heat strip replacement | $305–$920 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
More heat pump problems 9
Heat Pump not cooling
| Most common repair | Typical total | DIY? |
|---|---|---|
| Dual-run capacitor replacement | $205–$460 | DIY possible |
| Refrigerant recharge (R-410A) | $355–$1,020 | Pro recommended |
| Contactor replacement | $205–$460 | DIY possible |
| Reversing valve replacement | $410–$1,530 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Heat Pump stuck in defrost / frozen outdoor unit
| Most common repair | Typical total | DIY? |
|---|---|---|
| Defrost control board replacement | $205–$665 | Pro recommended |
| Defrost sensor / outdoor coil thermostat replacement | $155–$410 | Pro recommended |
| Reversing valve replacement | $410–$1,530 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Heat Pump reversing valve replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Reversing valve replacement (full valve body, refrigerant recovery + braze + recharge) | $410–$1,530 | Pro recommended |
| Reversing valve solenoid coil replacement (electrical coil only, valve body reused) | $155–$410 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Heat Pump defrost control board replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Defrost control board replacement | $205–$665 | Pro recommended |
Base: 1 published national repair-cost guide (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Heat Pump capacitor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Dual-run capacitor replacement | $205–$460 | DIY possible |
| Capacitor replacement + hard-start kit (aging compressor start assist) | $355–$665 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Heat Pump refrigerant leak repair / recharge
| Most common repair | Typical total | DIY? |
|---|---|---|
| Minor leak repair + partial recharge | $205–$510 | Pro recommended |
| Moderate leak repair (extensive leak detection + repair + full refill) | $510–$1,020 | Pro recommended |
| Severe leak repair (coil-area leak, full evacuation + recharge) | $1,020–$1,530 | Pro recommended |
Base: 3 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Heat Pump compressor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Heat pump compressor replacement (installed) | $1,840–$4,595 | Pro recommended |
| Hard-start kit install (cheaper stopgap, not a true compressor fix) | $155–$305 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Heat Pump outdoor fan motor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Outdoor fan motor replacement (standard PSC) | $255–$765 | Pro recommended |
| Outdoor fan motor replacement (ECM/DC variable-speed) | $615–$1,225 | Pro recommended |
| Fan blade replacement only (motor healthy, blade damaged) | $100–$225 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Heat Pump short cycling (turns on and off)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Service call with airflow restoration — filter, return grille and indoor coil cleared on a system that is overheating or icing | $130–$410 | Pro recommended |
| Refrigerant leak search and recharge where low charge is tripping the safety control | $305–$1,430 | Pro recommended |
| Failing start capacitor, contactor or pressure switch replaced; thermostat recalibrated or moved off a bad wall | $145–$510 | Pro recommended |
Base: 3 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductless Mini-Split repair cost in Baltimore 10 problems priced
Ductless Mini-Split repairs in Baltimore typically run $80–$2,860 (2026).
Ductless Mini-Split not cooling
| Most common repair | Typical total | DIY? |
|---|---|---|
| Refrigerant leak search + repair + recharge | $305–$1,020 | Pro recommended |
| Indoor or outdoor control board (PCB) replacement | $155–$1,125 | Pro recommended |
| Compressor replacement (outdoor unit) | $815–$2,860 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
More ductless mini-split problems 9
Ductless Mini-Split not heating
| Most common repair | Typical total | DIY? |
|---|---|---|
| Reversing valve replacement | $305–$1,225 | Pro recommended |
| Refrigerant leak search + repair + recharge | $305–$1,020 | Pro recommended |
| Indoor or outdoor control board (PCB) replacement | $155–$1,125 | Pro recommended |
| Thermistor / temperature sensor replacement | $100–$305 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductless Mini-Split refrigerant leak repair / recharge
| Most common repair | Typical total | DIY? |
|---|---|---|
| Refrigerant recharge only (top-off, no repairable leak point found) | $100–$355 | Pro recommended |
| Leak search + flare/line-set repair + recharge | $305–$1,020 | Pro recommended |
| Evaporator or condenser coil replacement (non-repairable leak) | $1,840–$2,555 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductless Mini-Split compressor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Compressor replacement (outdoor unit) | $815–$2,860 | Pro recommended |
Base: 1 published national repair-cost guide (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductless Mini-Split indoor blower / fan motor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Indoor cross-flow blower/fan motor replacement | $275–$615 | Pro recommended |
| Cross-flow fan bearing / fan-wheel replacement (cheaper fix) | $80–$255 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductless Mini-Split indoor head leaking water
| Most common repair | Typical total | DIY? |
|---|---|---|
| Condensate drain line clear / clean | $100–$510 | DIY possible |
| Condensate pump replacement | $155–$410 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductless Mini-Split error code / flashing light fault
| Most common repair | Typical total | DIY? |
|---|---|---|
| Thermistor / sensor replacement | $100–$305 | Pro recommended |
| Indoor or outdoor control board (PCB) replacement | $155–$1,125 | Pro recommended |
| Communication (signal) wire repair | $155–$460 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductless Mini-Split control board / pcb replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Outdoor unit main control board (PCB) replacement | $155–$1,125 | Pro recommended |
| Indoor unit interface/control board replacement (lower-cost tier) | $205–$510 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductless Mini-Split outdoor unit not running
| Most common repair | Typical total | DIY? |
|---|---|---|
| Run/start capacitor replacement | $100–$305 | Pro recommended |
| Outdoor unit control board (PCB) replacement | $155–$1,125 | Pro recommended |
| Compressor replacement (outdoor unit) | $815–$2,860 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductless Mini-Split musty or mouldy smell from the indoor unit
| Most common repair | Typical total | DIY? |
|---|---|---|
| Full chemical deep clean of the indoor head — coil, blower wheel and drain pan, casing stripped and bagged | $225–$560 | Pro recommended |
| Drain line flush and anti-microbial treatment of the condensate path | $85–$265 | Pro recommended |
| Blower wheel pulled and cleaned where biofilm has hardened on the fins, additional heads billed each | $305–$715 | Pro recommended |
Base: 3 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Boiler repair cost in Baltimore 10 problems priced
Boiler repairs in Baltimore typically run $100–$3,065 (2026).
Boiler no heat / not firing up
| Most common repair | Typical total | DIY? |
|---|---|---|
| Circulator pump replacement | $305–$1,125 | Pro recommended |
| Ignition electrode / ignitor replacement | $100–$410 | DIY possible |
| Gas valve replacement | $205–$1,125 | Pro recommended |
| Aquastat / control replacement | $155–$510 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
More boiler problems 9
Boiler no hot water
| Most common repair | Typical total | DIY? |
|---|---|---|
| Circulator pump replacement | $305–$1,125 | Pro recommended |
| Domestic hot water (plate/secondary) heat exchanger replacement | $510–$1,020 | Pro recommended |
Base: 1 published national repair-cost guide (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Boiler losing pressure
| Most common repair | Typical total | DIY? |
|---|---|---|
| Expansion tank / vessel replacement + repressurize | $205–$815 | Pro recommended |
| Pressure relief valve replacement | $155–$510 | Pro recommended |
| Pipe / fitting leak repair (slow pressure loss) | $180–$815 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Boiler leaking water
| Most common repair | Typical total | DIY? |
|---|---|---|
| Pipe / fitting / pump-seal leak repair | $180–$815 | Pro recommended |
| Pressure relief valve replacement | $155–$510 | Pro recommended |
| Heat exchanger replacement (cracked/corroded — high-ticket) | $1,020–$3,065 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Boiler kettling (banging / rumbling noise)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Chemical / power flush (descale + sludge removal) | $410–$1,225 | Pro recommended |
| Pressure relief valve replacement (post-overheat check) | $155–$510 | Pro recommended |
Base: 1 published national repair-cost guide (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Boiler pilot light won't stay lit
| Most common repair | Typical total | DIY? |
|---|---|---|
| Thermocouple replacement | $100–$410 | DIY possible |
| Pilot assembly cleaning / adjustment (no parts) | $100–$305 | DIY possible |
Base: 1 published national repair-cost guide (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Boiler keeps switching off (short cycling)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Expansion vessel repressurize / replace | $205–$815 | Pro recommended |
| Short-cycling diagnostic & control repair (limit control / pressure switch / wiring) | $205–$1,125 | Pro recommended |
Base: 1 published national repair-cost guide (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Boiler circulator pump replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Circulator / circulation pump replacement | $305–$1,125 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Boiler expansion vessel / tank replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Expansion vessel / tank replacement + repressurize | $205–$815 | Pro recommended |
| Expansion tank swap only (accessible tank, simpler job) | $155–$410 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Boiler ignition fault / lockout
| Most common repair | Typical total | DIY? |
|---|---|---|
| Ignition electrode / ignitor replacement | $100–$410 | DIY possible |
| Ignition control module (lockout board) replacement | $305–$1,330 | Pro recommended |
| Gas valve replacement | $205–$1,125 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Thermostat & Controls repair cost in Baltimore 10 problems priced
Thermostat & Controls repairs in Baltimore typically run $60–$920 (2026).
Thermostat & Controls smart thermostat installation
| Most common repair | Typical total | DIY? |
|---|---|---|
| Smart thermostat installation — existing compatible wiring (no new C-wire needed) | $155–$410 | DIY possible |
| Smart thermostat installation with new C-wire run/adapter (no existing C-wire) | $305–$715 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
More thermostat & controls problems 9
Thermostat & Controls blank screen / won't power on
| Most common repair | Typical total | DIY? |
|---|---|---|
| Blown low-voltage fuse / tripped breaker / transformer reset or replace | $75–$225 | DIY possible |
| Loose or faulty C-wire connection repair | $85–$255 | Pro recommended |
| Thermostat unit replacement (internal board dead) | $100–$325 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Thermostat & Controls won't reach set temperature
| Most common repair | Typical total | DIY? |
|---|---|---|
| Wiring fault / loose low-voltage connection repair | $85–$235 | Pro recommended |
| Sensor recalibration / thermostat relocation (labor only) | $75–$185 | DIY possible |
| Thermostat replacement (failed internal temperature sensor) | $100–$325 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Thermostat & Controls thermostat wiring / c-wire repair
| Most common repair | Typical total | DIY? |
|---|---|---|
| Repair/reconnect existing thermostat wiring (loose or damaged wire) | $60–$205 | DIY possible |
| Add new C-wire (fish wire through wall from HVAC equipment to thermostat) | $125–$390 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Thermostat & Controls won't connect to wi-fi
| Most common repair | Typical total | DIY? |
|---|---|---|
| Wi-Fi/network troubleshooting service visit (router or app-pairing reconfiguration) | $75–$180 | DIY possible |
| Smart thermostat replacement (failed Wi-Fi radio/board) | $155–$410 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Thermostat & Controls clicks but system won't respond
| Most common repair | Typical total | DIY? |
|---|---|---|
| Relay / transformer replacement | $85–$235 | Pro recommended |
| Wiring fault repair (shorted or miswired low-voltage run) | $70–$205 | Pro recommended |
| Thermostat replacement (internal relay contacts failed) | $110–$325 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Thermostat & Controls wrong temperature reading / miscalibrated
| Most common repair | Typical total | DIY? |
|---|---|---|
| Recalibrate / relocate thermostat (labor only) | $65–$165 | DIY possible |
| Thermostat replacement (drifted/failed internal sensor) | $100–$305 | DIY possible |
Base: 1 published national repair-cost guide (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Thermostat & Controls zone control board / damper repair
| Most common repair | Typical total | DIY? |
|---|---|---|
| Zone damper actuator/motor replacement (single zone) | $155–$510 | Pro recommended |
| Zone control panel/board replacement | $255–$920 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Thermostat & Controls heating or cooling won't shut off
| Most common repair | Typical total | DIY? |
|---|---|---|
| Diagnosis plus low-voltage thermostat wiring repair — shorted, pinched or chafed stat cable, or a stuck W call | $130–$460 | Pro recommended |
| Fan limit switch replacement on a furnace whose blower will not stop | $145–$490 | Pro recommended |
| Welded contactor, fan-centre relay or failed control board replaced | $155–$920 | Pro recommended |
Base: 3 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Thermostat & Controls moving a thermostat to a different wall
| Most common repair | Typical total | DIY? |
|---|---|---|
| Relocate the thermostat to a new wall with a fresh low-voltage cable run and mounting box | $205–$570 | Pro recommended |
| Relocate onto wiring that already reaches a nearby wall, plus making good the old opening | $80–$325 | Pro recommended |
| Wireless / RF room sensor conversion where a cable run is impractical | $155–$615 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Air Handler repair cost in Baltimore 10 problems priced
Air Handler repairs in Baltimore typically run $60–$3,270 (2026).
Air Handler blower not running
| Most common repair | Typical total | DIY? |
|---|---|---|
| Capacitor replacement | $110–$355 | DIY possible |
| Blower motor replacement (seized/burned-out motor) | $410–$815 | Pro recommended |
| Control board / fan relay replacement | $410–$615 | Pro recommended |
Base: 3 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
More air handler problems 9
Air Handler blower motor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| PSC (single-speed) blower motor replacement | $410–$815 | Pro recommended |
| ECM / variable-speed blower motor + module replacement | $815–$1,530 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Air Handler weak airflow
| Most common repair | Typical total | DIY? |
|---|---|---|
| Blower wheel cleaning (dust/debris buildup restricting airflow) | $185–$475 | Pro recommended |
| Blower wheel replacement (cracked/unbalanced wheel) | $100–$410 | Pro recommended |
| Capacitor replacement (undervolted motor spins slower than rated) | $110–$355 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Air Handler leaking water (drain pan / coil)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Condensate drain line clear/flush | $75–$255 | DIY possible |
| Condensate pump replacement | $130–$285 | DIY possible |
| Drain pan replacement (rusted-through/cracked primary pan) | $615–$1,225 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Air Handler frozen evaporator coil
| Most common repair | Typical total | DIY? |
|---|---|---|
| Airflow-restriction fix (filter/blower) + thaw-out service call | $100–$305 | DIY possible |
| Refrigerant leak locate-and-repair + recharge | $205–$510 | Pro recommended |
| Evaporator coil cleaning/repair (physically iced-over or fouled coil) | $155–$460 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Air Handler noisy or loud (rattling / humming)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Blower motor replacement (worn bearings — grinding/squealing) | $355–$765 | Pro recommended |
| Blower wheel cleaning/rebalancing (rattling from dust or a bent fin) | $155–$410 | Pro recommended |
| Mounting hardware / vibration isolator repair | $75–$205 | DIY possible |
Base: 1 published national repair-cost guide (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Air Handler electric heat strip / auxiliary heat replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Heat sequencer relay replacement | $155–$410 | Pro recommended |
| Heat strip element replacement | $255–$665 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Air Handler control board replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Standard air-handler control board replacement | $410–$615 | Pro recommended |
| Advanced/variable-speed control board replacement | $510–$920 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Air Handler evaporator coil replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Evaporator coil replacement with refrigerant recovery, braze-in and recharge | $920–$3,065 | Pro recommended |
| Cased coil swap with a new drain pan and re-made line-set connections | $1,125–$3,270 | Pro recommended |
| Warranty coil replacement — manufacturer covers the part, homeowner is billed labour and refrigerant | $355–$1,125 | Pro recommended |
Base: 3 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Air Handler musty smell from the vents
| Most common repair | Typical total | DIY? |
|---|---|---|
| In-place chemical evaporator coil clean plus drain pan treatment and line flush | $100–$410 | Pro recommended |
| Pull-and-clean where the coil is sealed in — sheet metal cut open, blower wheel pulled and washed | $390–$715 | Pro recommended |
| Anti-microbial treatment and condensate-pan tablet follow-up to stop the smell returning | $60–$255 | Pro recommended |
Base: 3 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductwork & Vents repair cost in Baltimore 10 problems priced
Ductwork & Vents repairs in Baltimore typically run $25–$7,045 (2026).
Ductwork & Vents leaky duct sealing / repair
| Most common repair | Typical total | DIY? |
|---|---|---|
| Manual mastic/foil-tape duct sealing (accessible leak points) | $510–$1,530 | DIY possible |
| Aeroseal aerosol duct sealing (whole-system, reaches hard-to-access leaks) | $1,530–$7,045 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
More ductwork & vents problems 9
Ductwork & Vents ductwork replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Partial-run ductwork replacement (single run or section) | $410–$1,125 | Pro recommended |
| Whole-system ductwork replacement | $1,430–$5,720 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductwork & Vents uneven airflow between rooms (balancing)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Professional duct/damper air balancing | $410–$2,040 | Pro recommended |
| Add a return-air duct (new run to a starved room) | $510–$1,225 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductwork & Vents disconnected / collapsed duct repair
| Most common repair | Typical total | DIY? |
|---|---|---|
| Reconnect and re-support disconnected/collapsed duct section | $155–$1,225 | Pro recommended |
| Replace damaged duct section (reconnect insufficient) | $510–$2,555 | Pro recommended |
Base: 1 published national repair-cost guide (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductwork & Vents duct damper repair
| Most common repair | Typical total | DIY? |
|---|---|---|
| Motorized damper actuator replacement | $155–$665 | Pro recommended |
| Manual damper blade/motor replacement (non-zoned duct damper) | $205–$460 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductwork & Vents vent / register replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Vent/register replacement (standard supply or return grille) | $100–$305 | DIY possible |
| Register boot repair (duct-to-floor/wall connector) | $100–$355 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductwork & Vents duct insulation replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Re-wrap exposed ductwork with fiberglass duct insulation | $1,020–$2,755 | Pro recommended |
| Insulated flex-duct section replacement (swap a damaged run for insulated flex) | $510–$1,530 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductwork & Vents duct cleaning
| Most common repair | Typical total | DIY? |
|---|---|---|
| Whole-home professional duct cleaning (full-system 2-person crew service) | $460–$1,020 | Pro recommended |
| Per-vent or per-square-foot priced cleaning (lighter-touch service) | $185–$510 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductwork & Vents adding a vent or duct run to a room
| Most common repair | Typical total | DIY? |
|---|---|---|
| New supply branch run cut into an existing trunk, with boot and register | $305–$920 | Pro recommended |
| Add a return air vent or return duct where the system is return-starved | $155–$920 | Pro recommended |
| Add or swap the supply register only, where a branch already reaches the room | $25–$225 | DIY possible |
Base: 3 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Ductwork & Vents noisy ducts (banging, popping, whistling)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Duct stiffening, bracing and mastic sealing at the trunk to stop the oil-canning bang on start-up | $100–$510 | DIY possible |
| Static-pressure correction: open up or resize a restricted return, reset dampers and rebalance | $155–$920 | Pro recommended |
| Refit or replace rattling registers and grilles, re-hang loose flex-duct, fit a backdraft damper | $50–$355 | DIY possible |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Oil Furnace repair cost in Baltimore 10 problems priced
Oil Furnace repairs in Baltimore typically run $90–$13,275 (2026).
Oil Furnace won't start / won't fire
| Most common repair | Typical total | DIY? |
|---|---|---|
| Cad-cell primary control replacement (lockout/no-start fix) | $155–$325 | Pro recommended |
| Nozzle & oil filter replacement (fuel-delivery no-start cause) | $100–$265 | Pro recommended |
| Ignition electrodes / transformer replacement | $100–$305 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
More oil furnace problems 9
Oil Furnace not heating / no heat
| Most common repair | Typical total | DIY? |
|---|---|---|
| Nozzle & oil filter replacement (routine fuel-delivery fix) | $100–$265 | Pro recommended |
| Ignition electrodes replacement | $100–$305 | Pro recommended |
| Fuel-oil pump replacement | $305–$715 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Oil Furnace nozzle / oil filter replacement (tune-up)
| Most common repair | Typical total | DIY? |
|---|---|---|
| Standard annual nozzle + oil filter service | $100–$205 | Pro recommended |
| Comprehensive tune-up + nozzle/filter (full cleaning, combustion test) | $205–$355 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Oil Furnace ignition electrode / transformer replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Ignition electrode pair replacement | $100–$255 | Pro recommended |
| Ignition transformer replacement | $100–$355 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Oil Furnace oil burner motor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Oil burner motor replacement (1/7 HP PSC, standard residential) | $230–$510 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Oil Furnace cad cell / primary control replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Cad-cell (flame-sensor eye) replacement only | $90–$225 | Pro recommended |
| Full primary control (cad-cell relay) module replacement | $155–$355 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Oil Furnace puffback / soot cleanup
| Most common repair | Typical total | DIY? |
|---|---|---|
| Burner tune + combustion-chamber soot cleaning (root-cause HVAC fix) | $155–$460 | Pro recommended |
| Professional soot/smoke damage cleanup (separate restoration service, NOT an HVAC repair) | $4,595–$13,275 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Oil Furnace fuel oil pump replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| Single-stage fuel-oil pump replacement | $280–$460 | Pro recommended |
| Two-stage fuel-oil pump replacement | $460–$665 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Oil Furnace blower motor replacement
| Most common repair | Typical total | DIY? |
|---|---|---|
| PSC blower motor replacement (single-speed) | $305–$765 | Pro recommended |
| ECM / variable-speed blower motor replacement | $615–$1,430 | Pro recommended |
Base: 2 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
Oil Furnace cracked heat exchanger / combustion chamber
| Most common repair | Typical total | DIY? |
|---|---|---|
| Heat exchanger replacement on an oil-fired warm-air furnace, where the part is still available or covered by a parts warranty | $1,020–$4,085 | Pro recommended |
| Combustion chamber / firebox liner replacement with a post-repair combustion analysis | $255–$920 | Pro recommended |
| Condemn-and-quote: furnace red-tagged and shut off, replacement oil furnace quoted instead of the repair | $4,085–$8,170 | Pro recommended |
Base: 5 published national repair-cost guides (retrieved 2026-07) · full source registry on the methodology page · Localized via BLS OEWS May 2025 (metro_soc) + BEA RPP 2024 · Reviewed July 2026 · Estimated
How we price this for Baltimore
We take each national base range and multiply it by Baltimore's local index of 1.02:
local range = national base × 1.02
The index blends the metro's wage relativity (Baltimore metro wages for appliance technicians (BLS OEWS occupation 49-9031)) with the BEA Regional Price Parity for Baltimore, held to a sane band. Parts ship at national prices, so only the labor and overhead share moves with the metro. These localized estimates are cross-checked against 2 locally published service fees in the observed stat above — figures we show verbatim, never run through the index. The full method and source vintages are on the methodology page.
Nearby metros
All HVAC repair problems (national)
- 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 Maryland hub or the U.S. 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).