Heat Pump: Repair or Replace? (2026 cost comparison)
The rule of thumb, from Consumer Reports: don't spend more than 50% of a comparable new unit on fixing the old one. For a heat pump, that 50% line is about $3,000–$12,500 — a new unit runs $6,000–$25,000 and typically lasts 10–15 years. If a repair quote lands under that line and the heat pump is not yet past its expected life, repair usually wins. Reviewed July 2026.
Repair vs. replace, side by side Estimated
| Cost | Estimated range |
|---|---|
| Typical repair (this heat pump, all faults we price) | $100–$4,500 |
| New heat pump (unit only) | $6,000–$25,000 |
| The 50% line half a comparable new unit | $3,000–$12,500 |
Repair: min–max of every heat pump fault we price (sources on each linked problem page) · New unit: Carrier · Lifespan 10–15 years: Trane, American Standard · 50% rule: Carrier · Reviewed July 2026 · Estimated
Age × repair-cost worksheet Estimated
Find your heat pump's age down the side and your repair quote across the top. The cell is the way the 50% rule points — Estimated guidance, not advice.
| Age of unit | Repair < 30% of a new heat pumpunder $1,800–$7,500 | Repair 30–50%$1,800–$7,500 – $3,000–$12,500 | Repair > 50%over $3,000–$12,500 |
|---|---|---|---|
| Under 6 years first half of typical life | Repair likely | Repair likely | Compare quotes |
| 6–15 years second half, under typical lifespan | Repair likely | Compare quotes | Replace likely |
| Over 15 years at or beyond typical lifespan | Compare quotes | Replace likely | Replace likely |
How this is built: we apply the 50% rule (Carrier) — spend no more than half a comparable new unit's cost on a repair — with its lifespan corollary (replacement is favored once the unit is past the midpoint of its expected life and the quote tops 50%). Columns are your repair quote as a share of a new heat pump ($6,000–$25,000); the $3,000–$12,500 and $1,800–$7,500 thresholds are just 50% and 30% of that range. Rows use the midpoint of the expected life (about 6 years — halfway through a typical 13-year lifespan) and the top of the sourced 10–15 years range (15 years). Nothing here is a per-unit price or a recommendation — it is a transparent reading of the rule.
Trane attributes the 10–15-year average to unit/installation quality, maintenance history, and climate/usage severity, and separately states some well-maintained Trane heat pumps have run 25 years — an outlier above the stated average range, not a revision to it.
One more thing before you replace
A newer heat pump can cut energy and water use, which shifts the math on an older unit even when a repair is cheap: ENERGY STAR notes clothes washers over ~10 years and refrigerators over ~15 years are common efficiency-driven replacements.
Energy note: ENERGY STAR · Reviewed July 2026 · Estimated · Informational only
Price the repair first
Before you decide, get the likely repair figure for the exact fault — each page localizes to your metro:
- Full heat pump cost guide
- Not heating
- Not cooling
- Stuck in defrost / frozen outdoor unit
- Reversing valve replacement
- Defrost control board replacement
- Capacitor replacement
- Refrigerant leak repair / recharge
- Compressor replacement
- Outdoor fan motor replacement
- Short cycling (turns on and off)
Estimated ranges — see the methodology for how we build the repair figures and their named sources. This page is informational and is not repair, purchasing, or financial advice.
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).