Heat Pump Repair in Walnut Creek and the Bay Area
Heat pumps work year-round, which means they fail in both seasons: no heat in January, no cooling in July, outdoor units that ice over, or reversing valves that stick between modes.
We diagnose electronically controlled systems properly — boards, sensors, and refrigerant circuits — and repair the failed component with documented readings to back it up.
Heat pump problems we fix: No heating or no cooling mode; Outdoor unit icing and defrost failures; Reversing valve problems; Refrigerant leaks and charge issues; Board, sensor, and control faults; Weak airflow and noisy operation.
Book with OTTER HVAC at (650) 900-0440. Flat $69 diagnostic on repairs. Free in-home estimates on new installations. EPA 608, OSHA, and NATE certified technicians.
Serving Concord, Walnut Creek, Pleasant Hill, San Ramon, Danville, Oakland, Berkeley, San Francisco, and nearby East Bay cities. Hours: 7:00am–5:00pm, seven days a week.
Related: All services · Pricing · Contact · heat pump installation
Frequently asked questions
My heat pump runs constantly in winter. Is it broken?
Not necessarily — heat pumps are designed to run longer, steadier cycles than furnaces. But if the house isn’t holding temperature, a $69 diagnostic will tell you what’s actually happening.
Ice on the outdoor unit — emergency or normal?
Light frost that clears with the defrost cycle is normal. A unit encased in ice is not — shut it off and give us a call before the compressor pays the price.
Explore related pages
References and credentials
- U.S. DOE Energy Saver
- EPA Section 608
- EPA Section 608 refrigerant certification
- U.S. Department of Energy — Energy Saver
Authority sources: U.S. DOE Energy Saver · EPA Section 608