Heat pumps fail differently than standard AC or furnace systems, and diagnosing them requires understanding the reversing valve and defrost board specifically.
Auxiliary heat strip issues are checked alongside the heat pump itself.
A heat pump that seems to be 'not heating' is often actually a reversing valve or defrost cycle problem, which a technician trained mainly on standard ac systems can easily misdiagnose, which is exactly why heat pump repair calls in Cotati, CA get treated with urgency, not a next-available-Tuesday slot.

Waiting rarely saves money and often turns a same-day repair into a longer, more involved job.
AAA Pro HVAC built its heat pump repair process around one idea: diagnose first, quote honestly, fix it right.
Every truck across Cotati, CA carries the tools and common parts specific to heat pump repair, so most calls finish in a single visit.

Heat pump failure modes are different enough from standard AC that generic diagnostics often miss the actual cause.
No-heat calls in winter get the same priority as no-cool calls in summer.
Auxiliary heat strip diagnostics are included in the same visit when relevant.
Refrigerant charge is verified against heat pump-specific specs, which differ from standard AC charging.
From the first symptom to the final fix, these are the specific heat pump repair services our Cotati-area crews are equipped for.
A stuck reversing valve is the single most common reason a heat pump gets stuck in one mode. This is one of the most requested heat pump repair calls we get across Cotati, CA.
An outdoor unit that ices over and never defrosts usually points to a failed defrost thermostat or control board timing issue. Techs handling defrost cycle & control board repair carry the specific parts and tools this job calls for, not a generic kit.
Backup electric heat strips that fail can leave a home without adequate heat during the coldest stretches. Techs handling auxiliary / emergency heat strip repair carry the specific parts and tools this job calls for, not a generic kit.
Heat pump refrigerant charging follows different specs than standard AC systems, especially across heating and cooling modes. This is one of the most requested heat pump repair calls we get across Cotati, CA.
Some icing is normal during defrost cycling; persistent icing that never clears points to a genuine fault. Techs handling outdoor unit icing diagnostics carry the specific parts and tools this job calls for, not a generic kit.
Ductless mini-split heat pumps have their own fault-code language separate from central systems. This is one of the most requested heat pump repair calls we get across Cotati, CA.

Describe whether the system is stuck in one mode, iced over, or not heating/cooling at all.
Heat pump-trained technicians arrive with reversing valve and defrost diagnostic equipment already loaded.
Flat-rate pricing follows the confirmed diagnosis.
Workmanship is guaranteed and documented on your invoice.

System would only blow cold air no matter what mode I selected.
Outdoor unit was constantly covered in ice and I thought that meant it was broken.
They tested the relay separately from the strips themselves and found the actual fault fast.
Ductless heat pump in the addition threw a code I couldn't find anywhere online.

This is one of the most common and most misdiagnosed heat pump failures.
If the unit stays iced for more than an hour, that's worth a service call.
A technician needs specific training on these components to diagnose heat pump issues accurately.
If auxiliary heat isn't kicking in properly, that's a specific fault we can test for.
These systems have their own fault-code patterns that our techs are trained to read.
Call for a live arrival estimate based on current demand.

Our heat pump repair crews are positioned throughout Cotati, CA to keep response times realistic, not just promised.
☎ Call +1-866-805-8548 for Cotati Service