Heat Pump Repair in Boulder

In Mapleton Hill, where most homes predate 1910, ductless systems are often the only practical way owners added efficient heat and cooling. Typical service calls are dirty blower wheels that cut airflow and grow mildew, condensate pumps that fail and drip down plaster walls, and communication errors between the outdoor unit and the heads. We clean wheels and coils in place, replace pumps and trace wiring faults by code.

If a head blows cool in heating mode on a cold night, low charge from a leaking flare is a likely suspect. See our ductless guide for how these systems are laid out.

Boulder's design temperature is 0°F, and a good cold-climate heat pump still delivers heat well below that. If yours hands off to resistance strips or a furnace at 30°F, the cause may be a thermostat lockout set far too high, not a weak unit. On dual-fuel systems in Martin Acres ranches, we often find the switchover point left at a factory default. We set it from your Xcel gas and electric rates. Our winter performance article explains what to expect.

Summer hail flattens coil fins and can dent the tubing behind them. Light damage combs out. Heavy damage cuts capacity permanently, and we document it with photos for an insurance claim.

A unit under ten years old with a failed capacitor, fan motor, defrost board or sensor is a clear repair. A system from the early 2010s with a failed compressor, a leaking indoor coil or R-22 refrigerant is usually a replacement, and that work needs a City of Boulder mechanical permit under the 2024 energy code, which we pull.

Replacement incentives include Colorado's $1,000 credit, Power Ahead Colorado's $1,500 rebate and Xcel rebates, which changed in October 2026 and should be confirmed. Boulder County's EnergySmart help is now income-qualified only. The federal 25C credit has ended.