Heat Pump Repair in Denver

If vents blow cool air on a winter morning and the outdoor unit is running, the reversing valve is a prime suspect. That valve redirects refrigerant to switch between heating and cooling. Sometimes only the electric solenoid coil on the valve has failed, which is a small part. When the valve body itself sticks, the repair means recovering the refrigerant, brazing in a new valve, pulling a vacuum and recharging. On a unit that is already 12 or more years old, that bill is often the point where we show you replacement numbers side by side.

Many city homes with a heat pump have electric backup strips in the air handler. They are meant to help on the coldest nights and during defrost. When they run all day, the bill shows it. Common causes are a thermostat stuck on emergency heat, a thermostat set up for a different system type, a failed outdoor sensor, or a heat pump that has quietly stopped producing heat so the strips carry the whole load.

On homes with 100-amp service, which many older Denver houses still have, strips that cycle constantly can also trip breakers. We check amperage on each strip, confirm the outdoor unit is actually contributing, and set an outdoor lockout so the strips only help when they should. If you have a gas furnace paired with the heat pump, the changeover temperature matters just as much. Our dual fuel guide explains how that setting affects cost.

Ductless heads upstairs in a Denver Square are a common fix for hot, cold second floors. Their failures are different from ducted systems. A head that drips water down the wall usually has a clogged or sagging condensate line. A musty smell points to a dirty blower wheel, not just a dirty filter. A blinking light is an error code that tells us whether the fault is in the head, the outdoor unit or the communication wire between them. We clean blower wheels in place and read codes with the manufacturer's charts.

Heat pumps in this city range from brand new to 20 years old, so there is no single answer. We weigh the unit's age, the refrigerant it uses, how many major parts have already failed, and what a replacement would qualify for. Existing R-410A systems can still be serviced, but new equipment now uses lower-GWP refrigerants. If replacement wins, a cold-climate model can bring a $1,500 Power Ahead Colorado rebate (we file before work starts) plus the state credit, which knocks at least $333 off the bill. The federal 25C credit ended after 2025. We pull the CPD mechanical permit and schedule the inspection.