Heat Pump Repair Brooklyn
Heat pump repair for Brooklyn homes — ductless and ducted systems not heating in winter or not cooling in summer.
(347) 997-3360A heat pump does two jobs — it heats in winter and cools in summer. When it fails, you lose both in one call. Brownstone Heating & Air Conditioning handles heat pump repair across Brooklyn on every system type: ductless mini-split heat pumps (Mitsubishi, Fujitsu, Daikin), ducted heat pumps, and cold-climate inverter systems. Whether it's not heating in January, not cooling in July, icing up in heating mode, or throwing an error code — we diagnose the actual cause.
If your heat pump isn't doing its job in heating or cooling mode, don't guess.
Most calls we get in Brooklyn come down to a handful of issues — weak airflow, refrigerant problems, electrical faults, clogged drains, or components that just gave out after years of use.
No guesswork. We don't throw parts at it and hope it works. We actually check the system, figure out what's wrong, and tell you what makes sense to fix.
Brooklyn buildings are different. A lot of buildings here have their own challenges — rooftop condensers that haven't been touched in years, tight closets, old wiring, or ductless systems that weren't installed right. We've seen it all.
Call now or book online and we'll take a look.
What You Get
Heat Pump Repair in Brooklyn Buildings
Most heat pumps in Brooklyn are ductless mini-split systems installed for year-round comfort without ductwork. Repairing them correctly requires understanding how the refrigerant cycle reverses for heating, why defrost cycles trigger, and what error codes actually mean on each brand's control board. A generic AC diagnosis on a heat pump in heating mode leads to the wrong repair.
Heat Pump Problems We Repair
Heat pump failures look different in heating and cooling mode.
- Heat pump not heating in winter — blowing cool air in heat mode
- Heat pump not cooling in summer — same symptoms as standard AC failure
- System icing up in heating mode — defrost cycle issue
- Error code on the indoor display
- One zone not heating or cooling while others run fine
- Short-cycling in both heating and cooling modes
- Running constantly without reaching set temperature
- Outdoor unit not running — fan or compressor failure
Air Conditioning Systems We Repair
- Ductless mini-split heat pumps — Mitsubishi, Fujitsu, Daikin, LG
- Cold-climate inverter heat pumps rated to -13°F
- Multi-zone heat pump systems
- Ducted heat pump systems
- PTAC heat pump units
What Happens on a Heat Pump Repair Call
- 1You tell us what the system is doing
- 2We schedule a time that works (same-day when possible)
- 3We check the system properly — not just a quick guess
- 4We explain what's wrong and what it'll take to fix it
If it's something we can fix on the spot, we usually do. Tell us what the system is doing and we'll point you in the right direction.
How We Can Help
Heat pump repair is different from standard AC repair because the refrigerant cycle runs in reverse for heating. A reversing valve stuck in cooling mode looks like the system "not heating." A failed defrost board causes ice buildup that looks like a refrigerant problem. We check the mode-specific failure points — not just the generic AC checklist.
- Test heating mode and cooling mode separately
- Check reversing valve, defrost board, and auxiliary heat
- Read error codes against brand service manuals
- Written quote before any parts are ordered
Most heat pump "no heat" calls are fixable same-day.
A stuck reversing valve, a failed defrost board, or a low refrigerant charge all produce the same symptom — blowing cool air in heat mode. The fix depends on which one it actually is.
Cold-climate heat pumps in Brooklyn winters.
Modern cold-climate systems (Mitsubishi H2i, Fujitsu Halcyon, Daikin AURORA) are rated to -13°F. If your system is icing up or losing heating capacity in cold weather, the likely causes are a dirty filter restricting outdoor airflow, a refrigerant charge that's drifted low, or a defrost board that's not triggering properly. These are fixable — not a reason to replace the system.
Need Heat Pump Repair in Brooklyn?
Heat pump not heating or cooling right? Call now for same-day diagnostics.
(347) 997-3360Serving All of Brooklyn & NYC
Park Slope, Brooklyn Heights, Williamsburg, DUMBO, and more
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