Heat Pump Repair Cost (2026 Pricing)
Last updated: March 2026
How Much Does Heat Pump Repair Cost?
Heat pump repair costs $150 to $1,500 depending on the component that failed, with most common repairs falling between $200 and $600. Heat pumps share many components with central AC systems (compressor, capacitor, contactor, fan motor, refrigerant system) but also have unique components (reversing valve, defrost board, auxiliary heat strips) that AC systems do not. This means heat pump repair can involve the same issues as AC repair plus additional heat pump-specific problems.
Heat Pump Repair Cost by Component
| Repair | Cost Range | Unique to Heat Pumps? |
|---|---|---|
| Capacitor | $150 to $400 | No (shared with AC) |
| Contactor | $150 to $350 | No (shared with AC) |
| Refrigerant recharge (R-410A) | $200 to $700 | No (shared with AC) |
| Refrigerant leak repair | $200 to $1,500 | No (shared with AC) |
| Fan motor | $300 to $700 | No (shared with AC) |
| Reversing valve | $400 to $900 | Yes (heat pump only) |
| Defrost board | $300 to $600 | Yes (heat pump only) |
| Defrost thermostat/sensor | $150 to $300 | Yes (heat pump only) |
| Auxiliary heat strip | $200 to $500 | Yes (heat pump only) |
| Control board | $300 to $800 | No (but HP boards are more complex) |
| Compressor | $1,500 to $3,000 | No (shared with AC) |
| Evaporator coil | $1,000 to $2,500 | No (shared with AC) |
| Thermostat replacement | $150 to $400 | No (but HP thermostats have more modes) |
The service call or diagnostic fee for heat pump repair ranges from $75 to $175 for standard service and $150 to $350 for emergency calls. Many companies credit the diagnostic fee toward the repair if you proceed. For the national perspective on heat pump installation costs, see our comprehensive guide. For the full range of AC repair costs (which overlap significantly with heat pump repairs), see our AC repair guide.
What Repairs Are Unique to Heat Pumps?
Reversing Valve Replacement ($400 to $900)
The reversing valve is the component that makes a heat pump different from a central AC. It is a mechanical valve in the refrigerant line that controls the direction of refrigerant flow. In cooling mode, refrigerant flows one direction (absorbing heat inside, releasing outside). In heating mode, the reversing valve switches the flow direction (absorbing heat outside, releasing inside). When the reversing valve fails, the heat pump gets "stuck" in one mode: it either heats but will not cool, or cools but will not heat.
Reversing valve failure is one of the more expensive heat pump-specific repairs at $400 to $900 including parts and labor. The valve itself costs $150 to $400. The labor is significant ($250 to $500) because replacing the valve requires recovering the refrigerant, brazing the new valve into the refrigerant line (high-temperature soldering), pressure testing, evacuating, and recharging the system. This is a 2 to 4 hour job for an experienced technician. On heat pumps over 12 years old, reversing valve replacement often does not make financial sense when compared to full system replacement ($4,000 to $8,000).
Defrost Board Replacement ($300 to $600)
The defrost board (also called the defrost control or defrost timer) manages the defrost cycle that prevents the outdoor coil from becoming encased in ice during winter heating operation. When a heat pump extracts heat from cold outdoor air, moisture in the air condenses and freezes on the outdoor coil. The defrost cycle periodically reverses the heat pump into cooling mode for a few minutes, sending hot refrigerant through the outdoor coil to melt the frost. When the defrost board fails, the frost accumulates into heavy ice that blocks airflow and can damage the coil.
The defrost board costs $100 to $250 for the part. Labor adds $150 to $350 for a 1 to 2 hour job. Some defrost boards are integrated into the main control board, meaning a defrost failure requires replacing the entire board at higher cost ($400 to $800). A failed defrost cycle is a winter-specific problem that does not affect cooling performance.
Auxiliary Heat Strip Replacement ($200 to $500)
Auxiliary (AUX) heat strips are electric resistance heating elements built into the indoor air handler that provide backup heat when the heat pump cannot keep up with heating demand, typically during extreme cold (below 30 to 35 degrees). The heat strips are essentially large electric space heaters that supplement the heat pump's output. When they fail, the heat pump still provides some heating but cannot maintain comfortable temperatures during cold weather.
Heat strip replacement costs $200 to $500 for parts and labor. The strips themselves cost $50 to $200. The labor to access and replace them inside the air handler adds $150 to $300. On a properly functioning heat pump in a mild climate (Charlotte, Atlanta, Seattle), the auxiliary heat strips may never activate. In colder markets (Chicago, Denver, Kansas City), they activate regularly during the coldest stretches and their failure is immediately noticeable as inadequate heating.
What Are Common Heat Pump Symptoms and What Do They Cost to Fix?
Heat Pump Blowing Cold Air in Heat Mode ($0 to $900)
First check the thermostat: verify it is set to HEAT, not COOL or FAN ONLY. This free check solves the problem more often than you would expect. If the thermostat is correct, the most likely causes are a stuck reversing valve ($400 to $900, the valve is stuck in cooling mode), low refrigerant from a leak ($200 to $1,500), or a failed defrost board that iced up the outdoor coil and reduced heating capacity ($300 to $600). Use our troubleshooter for a step-by-step diagnostic. In the meantime, if your heat pump has an AUX or emergency heat mode, switching to it provides backup heating through the electric resistance strips while you wait for repair. This is more expensive to operate than the heat pump (2 to 3 times the cost) but maintains indoor temperature until the primary heating mode is restored.
Outdoor Unit Covered in Ice ($0 to $900)
Light frost on the outdoor coil during winter is normal. The defrost cycle should clear it every 30 to 90 minutes. Heavy ice encasing the entire unit means the defrost cycle is not working. Causes: failed defrost board ($300 to $600), defrost thermostat/sensor ($150 to $300), stuck reversing valve ($400 to $900, cannot switch to defrost mode), or the unit is sitting in standing water or snow that freezes around the base ($0, clear the obstruction). Do not chip ice off the coil fins (damages the aluminum). Pour lukewarm (not hot) water as a temporary measure while waiting for repair.
AUX Heat Running Constantly ($0 to $900)
AUX (auxiliary) heat activating below 30 to 35 degrees is normal. If AUX runs when outdoor temp is above 40 to 45 degrees, the heat pump is not functioning: the system is falling back on expensive electric resistance backup because the heat pump outdoor unit is not providing heat. Common causes: failed capacitor ($150 to $400), stuck reversing valve ($400 to $900), low refrigerant ($200 to $700), or the thermostat is accidentally set to EM HEAT (emergency heat mode, which bypasses the heat pump entirely). Check the thermostat mode first. Running on AUX instead of heat pump mode costs 2 to 3 times more in electricity, so prompt diagnosis saves significant money on every day the system runs in AUX.
Heat Pump Short Cycling ($150 to $500)
Short cycling (turning on and off every few minutes instead of running 10 to 15 minute cycles) is usually caused by a dirty filter restricting airflow ($5 to $15 fix), a failing capacitor ($150 to $400), low refrigerant ($200 to $700), or an oversized system (more common in heat pumps because sizing must account for both heating and cooling loads). Check and replace the filter first. If cycling continues with a clean filter, professional diagnosis is needed.
Why Do Heat Pump Repairs Sometimes Cost More Than AC Repairs?
Heat pumps and central AC systems share many components (compressor, coils, fan motors, capacitors, contactors), so repairs for these shared components cost roughly the same. However, heat pump repairs can be more expensive overall for three reasons.
First, heat pumps have additional components that AC systems do not: the reversing valve, defrost board, defrost thermostat, and auxiliary heat strips. These components add repair possibilities (and costs) that AC owners never encounter.
Second, heat pumps run year-round for both heating and cooling, accumulating roughly twice the operating hours of a cooling-only AC in the same climate. This accelerated wear means components fail sooner, resulting in more frequent repairs over the system's shorter 10 to 15 year lifespan.
Third, heat pump control boards tend to be more complex (and expensive) than AC control boards because they manage both heating and cooling modes, the defrost cycle, the reversing valve, and the auxiliary heat integration. A heat pump control board replacement costs $300 to $800, while a basic AC board costs $200 to $600.
How to Save on Heat Pump Repairs
Annual maintenance reduces heat pump repair frequency by 30 to 50%. A tune-up ($75 to $200 per visit, with two visits per year recommended for heat pumps that run year-round) catches failing capacitors, dirty coils, low refrigerant, and developing electrical issues before they become emergency failures. The $150 to $400 annual maintenance cost prevents $300 to $3,000 in emergency repairs.
Check your warranty. Most heat pumps carry a 5-year standard or 10-year registered parts warranty. The warranty covers the component (capacitor, compressor, coil, etc.) but not the labor to install it. A compressor covered under warranty saves $500 to $1,500 on the part, reducing the total repair from $1,500 to $3,000 down to $600 to $1,200 (labor only). Verify warranty status using our age decoder and the manufacturer's warranty lookup tool. Some premium heat pump brands (Mitsubishi, Daikin) offer extended or lifetime compressor warranties on certain models, which provides significant long-term protection on the most expensive single component in the system.
Get two to three quotes for any repair over $500. Heat pump repair quotes vary 20 to 35% between companies. The variation is primarily in labor rates and markup on parts, not the wholesale part cost. A second quote on a $700 reversing valve replacement might come in at $500 to $900 depending on the company's pricing model, overhead structure, and labor rates.
Consider a maintenance agreement ($150 to $400 per year) with a heat pump-experienced company. For heat pumps that run year-round, the two annual tune-ups (spring and fall) included in most plans provide more value than for AC-only systems because the heat pump's year-round operation means more wear and more potential failure points. The priority scheduling benefit is especially valuable during winter heating emergencies when standard wait times can stretch to 24 to 48 hours. The 10 to 15% repair discount that most plans include saves money on the more frequent repairs that heat pumps require compared to cooling-only systems. For systems over 5 years old, a maintenance agreement almost always pays for itself through prevented emergencies and discounted repairs within the first 1 to 2 years.
What Questions Should You Ask Before Approving Heat Pump Repair?
What is the total cost including everything? Get a single number for the diagnostic, part, and labor. Heat pump repairs should cost $150 to $1,500 for standard service. Emergency rates add $75 to $250 on top.
Is this a heat pump-specific issue or a shared component? If the repair involves a capacitor, contactor, or fan motor (shared with AC), any qualified HVAC technician can handle it. If it involves the reversing valve, defrost board, or auxiliary heat system (heat pump-specific), confirm the technician has heat pump diagnostic experience.
Did you test the system in both heating and cooling modes? A thorough heat pump repair visit includes verification that both modes work correctly and that the reversing valve switches properly. A technician who fixes the cooling issue but does not verify heating (or vice versa) may miss a related problem.
What caused the failure? Understanding the root cause matters for predicting future issues. A capacitor that failed from age and heat is normal wear. A capacitor that failed because the compressor is drawing excessive current is a symptom of a bigger problem that will destroy the replacement capacitor too. A good technician explains the cause, not just the fix.
Given the system's age, should I repair or replace? An honest technician tells you when a repair is not in your best financial interest. If the heat pump is over 12 years old and the repair is over $500, ask for a replacement quote alongside the repair quote so you can make an informed comparison. Use our repair vs replace guide for the decision framework.
When Should You Replace a Heat Pump Instead of Repairing?
Heat pumps have shorter repair vs replace thresholds than central AC because of their accelerated wear from year-round operation. Consider replacement at 12 years (vs 15 for AC). The 50% rule still applies: if the repair exceeds 50% of a new heat pump ($4,000 to $8,000), replace. A new heat pump costs $4,000 to $8,000 for standard and $5,000 to $10,000 for cold-climate models.
Replace for a compressor failure on a heat pump over 10 years old. The $1,500 to $3,000 compressor repair on a system already past the halfway point of its lifespan delays the inevitable by only a few years. The new system provides a full warranty, significantly better efficiency, and 10 to 15 more years of reliable operation. Replace for any major repair on a system with multiple recent failures (2+ repairs in 2 years). Replace if the system uses R-22 refrigerant.
The efficiency gains from replacing an old heat pump are significant. A 10-year-old heat pump rated at 14 SEER / 8 HSPF replaced with a modern 18 SEER2 / 10 HSPF2 model saves 20 to 35% on cooling and 15 to 25% on heating. In a market where the heat pump handles both, the combined savings are $400 to $1,000 per year. Use our cost calculator for a personalized comparison. See when to replace for the complete framework.
How Does Climate Affect Heat Pump Repair Frequency and Cost?
Heat pump repair frequency varies significantly by climate because the system's workload changes dramatically based on where you live. In mild climates like Charlotte, Atlanta, and Seattle, where temperatures rarely drop below 25 degrees or exceed 100, heat pumps operate comfortably within their design range for the entire year. Component wear is moderate, and repair frequency is similar to central AC: one significant repair every 3 to 5 years on a well-maintained system. Repair costs tend to be at the lower end of the ranges because the components are not stressed to their limits.
In hot climates like Houston, Dallas, Phoenix, and Miami, the heat pump runs at maximum cooling capacity for 6 to 10 months per year. This is identical stress to a central AC unit. Capacitors, contactors, and fan motors fail at the same accelerated rate as in AC-only systems: capacitors every 3 to 7 years instead of 7 to 10, fan motor bearings wearing faster, and compressor windings degrading sooner. Repair frequency increases to roughly one significant repair every 2 to 4 years after the system passes 7 years old.
In cold climates like Chicago, Minneapolis, and Denver, heat pumps face unique winter challenges that AC systems never encounter. The defrost cycle activates frequently during sub-freezing operation, putting extra wear on the reversing valve and defrost board. The outdoor coil operates at extremely low temperatures that stress refrigerant pressures and the compressor. If the system includes a gas furnace backup (dual fuel), the heat pump itself gets a break during the coldest stretches, which actually extends its component life compared to a standalone heat pump running auxiliary electric heat strips during extreme cold. Cold-climate heat pump repairs tend to cluster in late fall and early winter as defrost system and reversing valve issues emerge when heating demand increases.
What Does a Heat Pump Repair Visit Look Like?
A heat pump repair visit follows the same general process as an AC repair visit, with additional diagnostic steps for heat pump-specific components. The technician arrives, discusses symptoms, and begins diagnosis. For outdoor unit issues, they check the capacitor, contactor, fan motor, and compressor, the same components shared with central AC. They also check the reversing valve operation (does the system switch between heating and cooling correctly?), the defrost board and sensor (is the defrost cycle activating properly?), and the refrigerant pressures in both heating and cooling modes.
For indoor issues, the technician checks the blower motor, air handler operation, and auxiliary heat strip function. They test whether the thermostat correctly signals between heat pump mode, auxiliary heat, and emergency heat. Heat pump thermostats are more complex than AC-only thermostats because they manage multiple heating modes (heat pump primary, auxiliary supplemental, and emergency backup), and misconfigured thermostat settings are a surprisingly common cause of heat pump performance problems.
After the repair, the technician should test the system in both heating and cooling modes (if weather permits) to verify the reversing valve switches correctly and both modes produce the expected temperature differentials. They should measure compressor amp draw to confirm it is within specification, and verify that the defrost cycle activates and completes normally. This dual-mode testing is unique to heat pump service and is one reason heat pump-experienced technicians are important: a general HVAC technician who works primarily on furnace and AC systems may not know to test all heat pump modes.
How to Find a Heat Pump Repair Technician
Not all HVAC technicians are equally experienced with heat pump systems. In markets where heat pumps are the dominant system (Charlotte, Atlanta, Seattle, Portland), most technicians have extensive heat pump experience. In markets where gas furnaces dominate (Chicago, Minneapolis, Detroit, Milwaukee), heat pump expertise may be less common. When calling for heat pump service, ask specifically whether the technician has experience with heat pump diagnostics, including reversing valve testing, defrost cycle troubleshooting, and auxiliary heat system verification.
For ductless mini-split heat pumps, brand-specific experience matters even more. Mitsubishi, Daikin, Fujitsu, and LG systems use proprietary communication protocols and diagnostic tools. A technician experienced with Carrier ducted systems may not have the training or tools to properly diagnose a Mitsubishi mini-split. Ask about specific brand experience when scheduling mini-split service. See our contractor selection guide for general tips on finding qualified HVAC service.
Mini-Split Heat Pump Repairs vs Ducted
Ductless mini-split heat pumps have the same general components (compressor, coils, fan motors, refrigerant system, reversing valve) but in different configurations. The outdoor unit on a mini-split is smaller, and each indoor head has its own fan motor and coil. This means mini-split repairs can be zone-specific: one indoor unit can have a problem while the others work fine.
Mini-split specific repairs include: indoor fan motor ($200 to $500 per head), indoor coil cleaning or replacement ($200 to $800 per head), drain pump ($100 to $300, some mini-splits use a condensate pump instead of gravity drain), and electronic expansion valve ($200 to $500). Mini-split outdoor unit repairs (compressor, outdoor fan motor, control board) are similar in cost to ducted heat pump repairs. Mini-split brands (Mitsubishi, Daikin, Fujitsu, LG) are manufacturer-specific for parts, and only technicians trained on the specific brand should attempt repairs on communicating mini-split systems. Attempting to diagnose a Mitsubishi mini-split with general HVAC knowledge (without the brand-specific diagnostic tools and training) often leads to misdiagnosis and unnecessary part replacement. If you have a mini-split, find a contractor who is factory-trained and authorized by your specific brand before any repair need arises.
Frequently Asked Questions
How much does heat pump repair cost?
$150 to $1,500 depending on the component. Most common repairs cost $200 to $600. Capacitor $150 to $400, contactor $150 to $350, reversing valve $400 to $900, defrost board $300 to $600, fan motor $300 to $700, compressor $1,500 to $3,000. Heat pumps share many repair costs with AC systems but have additional unique components.
What repairs are unique to heat pumps?
Reversing valve ($400 to $900, controls switching between heat and cool modes), defrost board ($300 to $600, manages the frost-prevention cycle in winter), and auxiliary heat strips ($200 to $500, provide electric backup heating during extreme cold). These components do not exist in central AC or furnace systems.
Why is my heat pump blowing cold air in heat mode?
Check the thermostat first (set to HEAT, not COOL). If correct, the most likely causes are a stuck reversing valve ($400 to $900), low refrigerant from a leak ($200 to $1,500), or a failed defrost board icing up the outdoor coil ($300 to $600). The reversing valve is the most common mechanical cause of heat mode failure.
Why is my outdoor unit covered in ice?
Light frost is normal in winter. Heavy ice means the defrost cycle is not working. Causes: failed defrost board ($300 to $600), defrost sensor ($150 to $300), stuck reversing valve ($400 to $900), or standing water/snow around the base. Do not chip ice off. Pour lukewarm water as a temporary measure. Call for service.
How long do heat pumps last?
10 to 15 years, shorter than central AC (15 to 20) because heat pumps run year-round for both heating and cooling. Annual maintenance extends lifespan toward 15 to 18 years. Climate matters: heat pumps in mild markets last longer than in extreme markets where they work harder.
When should I replace instead of repairing?
Replace at 12 years with any repair over $500, if the compressor fails on a system over 10, if 2+ repairs in 2 years, or if the repair exceeds 50% of a new heat pump ($4,000 to $8,000). Heat pumps have shorter replacement thresholds than AC due to accelerated year-round wear.
Why does my heat pump run constantly?
In cold weather (below 30 degrees), constant running may be normal as the system works at maximum capacity. In mild weather, constant running indicates low refrigerant, dirty coils, or an undersized system. If it runs constantly and cannot maintain temperature, there is a problem. If it maintains temperature on a cold day, that is normal heat pump operation.
What does AUX heat mean?
AUX is electric resistance backup that supplements the heat pump during extreme cold. It costs 2 to 3 times more to operate than heat pump heating. Normal below 30 to 35 degrees. If AUX runs at 45+ degrees, the heat pump is not functioning and you are paying 2 to 3 times more than necessary for every hour of heating. Call for service promptly to avoid the electricity cost overrun.
