Manhattan
Yorkville base at 517 E 77th St; usually on site within about two hours in business hours.
Manhattan coverageHeat Pump Repair NYC
Heat pump repair in NYC by AC Repair NYC, based at 517 E 77th St, Manhattan. We service cold-climate and standard heat pumps in heating and cooling mode: defrost faults, reversing valves, low charge, iced outdoor coils and control boards. Diagnostics run $150 to $300. Call (212) 201-9201.
Do you repair heat pumps in NYC?
Yes. We service cold-climate and standard air-source heat pumps across NYC: Mitsubishi Hyper-Heat, Fujitsu Halcyon, Daikin Aurora, Bosch, Carrier and Rheem. Common repairs include defrost faults, reversing-valve issues, low-charge, iced coils and control-board failures. Diagnostic $150 to $300, typical repairs $350 to $1,200. Call (212) 201-9201.
Credentials
- Licensed HVAC contractor
- Fully insured crews
- EPA Section 608 certified
- NYC DOB registered
Certification and license records are available on request while our public verification page is in progress.
Symptoms
Heat pump faults we see in New York buildings
Heat pumps fail differently from straight cooling equipment, and both modes must be tested.
- Outdoor coil freezes solid and the defrost cycle never clears it.
- Unit cools normally in summer but blows cold air in heating mode.
- Backup electric heat runs constantly, driving the electric bill up.
- Inverter or control board faults on ductless systems, often with a blinking error code.
- Reversing valve stuck mid-position: neither mode reaches the set temperature.
- Low refrigerant charge from a line-set leak on a facade-mounted condenser.
- Short cycling every few minutes with a loud contactor click.
- Water tracking down the wall below a wall-mounted outdoor unit in a freeze-thaw cycle.
Process
How we diagnose a heat pump
Both modes forced
We run heating and cooling and read reversing valve position, not just the summer side.
Charge verified
Superheat and subcooling are measured against the manufacturer's chart for the outdoor temperature.
Defrost path tested
Defrost sensor resistance, board output and drain path are checked before anything is replaced.
Written quote
Board, valve or sensor: you get the part number, the labour and the total before we order.
Pricing
Heat pump price ranges
| Service | Price range |
|---|---|
| Diagnostic visit, business hours | $150 – $300 |
| Defrost sensor or thermistor replacement | $250 – $450 |
| Defrost control board | $400 – $850 |
| Reversing valve solenoid coil | $300 – $600 |
| Reversing valve replacement | $900 – $1,800 |
| Refrigerant leak search and recharge | $400 – $1,200 |
Ranges reflect 2026 New York City market rates for a licensed, insured contractor. Access conditions (rooftop, scaffolding, elevator windows in doorman buildings) and parts availability move the final number, so we confirm the price in writing before any work starts. The diagnostic fee is credited toward the repair when you approve it the same visit.
Coverage
Where we do this work
Manhattan, Brooklyn and Queens. The Bronx and Staten Island are outside our service area.
Brooklyn
Williamsburg, Park Slope, DUMBO, Brooklyn Heights, Bushwick, Bay Ridge.
Brooklyn coverageQueens
Long Island City, Astoria, Sunnyside, Woodside, Forest Hills, Flushing, Jamaica.
Queens coverageFrequently asked questions
How much does heat pump repair cost in NYC?
Diagnostics run $150 to $300 during business hours and are credited toward the repair. Common heat pump repairs land between $300 and $900: defrost boards, reversing valve solenoids, sensors and capacitors. Reversing valve replacement is the expensive outlier at $900 to $1,800.
My heat pump ices over in winter. Is that normal?
A thin frost layer that clears during the defrost cycle is normal. A solid ice block on the outdoor coil is not: it usually means a failed defrost sensor or board, a stuck reversing valve, low refrigerant charge or a blocked drain under the unit.
Do you service cold-climate heat pumps?
Yes. Cold-climate hyper-heating systems are increasingly common in NYC electrification retrofits. We service both heating and cooling modes, including inverter boards, low-ambient operation and backup heat strips.
The heat pump cools but will not heat. What causes that?
Usually the reversing valve or its solenoid coil, a defrost control failure, or a thermostat wired without a correct O/B changeover signal. A technician forces both modes and reads valve position to identify which.
Which heat pump brands do you work on?
Mitsubishi Electric, Fujitsu, Daikin, LG, Carrier, Trane, Bosch and Rheem, among others. We are trained on the ductless brands we install most, and we tell you at diagnosis if a control board must be ordered.
Can you help with a co-op or Local Law 97 retrofit question?
We can advise on equipment condition and service history for buildings planning an electrification retrofit, and we prepare the paperwork managing agents ask for. We do not perform emissions filings ourselves.
Keep reading
Related services
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Gas and electric furnace faults for NYC brownstones and small buildings.
Furnace repairCentral AC Repair
Split systems, air handlers and condensers in apartments and small buildings.
Central AC repairAC Maintenance
Pre-season tune-ups and quarterly maintenance contracts.
AC maintenance
Related reading
Before you call — read this first
Get service
Request a quote or call us directly
Tell us the brand, the error code if the unit shows one, and whether the fault is in heating or cooling mode.
- Address
-
517 E 77th St
New York, NY 10075 - Phone
- (212) 201-9201
- info@acrepair.nyc
- Hours
-
Monday–Friday 8:00–18:00
Saturday 9:00–15:00
Sunday closed · emergency line answered 24/7 - Service area
- Manhattan, Brooklyn, Queens