Heat pumps don’t fail like AC units. The symptoms are subtle. The unit runs but the house never quite gets warm, or the outdoor unit ices up and doesn’t recover, or the emergency-heat strips kick on every cold morning when they shouldn’t.
We diagnose in both heating and cooling modes. Reversing valve, defrost board, outdoor sensor, charge level, contactor, defrost cycle timing all get tested. A weak charge in a heat pump shows up as low heating capacity months before it shows up as poor cooling, so the diagnostic order matters.
Common heat pump calls we handle: stuck reversing valve, failed defrost board, low refrigerant, bad outdoor temp sensor, emergency-heat lockout that won’t disengage, and seized contactors. For replacement, we install Trane and Runtru heat pumps sized to the home’s load.

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