Heat pumps fail differently than standard AC or furnace systems, and diagnosing them requires understanding the reversing valve and defrost board specifically.
A heat pump stuck in one mode, or one that's iced over and won't defrost, gets diagnosed with the right tools for that specific failure mode.
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 Schertz, TX get treated with urgency, not a next-available-Tuesday slot.

Most heat pump repair problems give some warning before they turn into a system stuck blowing cold air in heating mode, an outdoor unit that's iced over and won't run its defrost cycle, or a system that switches modes but never actually reaches set temperature — catching it early usually means a shorter, cheaper fix.
AAA Pro HVAC built its heat pump repair process around one idea: diagnose first, quote honestly, fix it right.
We're licensed, insured, and staffed with techs who've spent years specifically on heat pump repair, not general handyman work with an HVAC certificate bolted on.

Heat pump failure modes are different enough from standard AC that generic diagnostics often miss the actual cause.
Heat pumps run in both summer and winter, so we treat heat pump failures as urgent regardless of season.
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 Schertz-area crews are equipped for.
We test the valve's solenoid directly rather than assuming based on symptoms alone. Techs handling reversing valve diagnosis & repair carry the specific parts and tools this job calls for, not a generic kit.
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.
We test heat strip elements and the relay controlling them separately. This is one of the most requested heat pump repair calls we get across Schertz, TX.
Heat pump refrigerant charging follows different specs than standard AC systems, especially across heating and cooling modes. Techs handling refrigerant charge & leak detection carry the specific parts and tools this job calls for, not a generic kit.
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.
Indoor head unit and outdoor condenser are diagnosed as a connected system. This is one of the most requested heat pump repair calls we get across Schertz, TX.

That detail determines which specialized tools ride along.
We confirm your Schertz address and a realistic arrival window.
Flat-rate pricing follows the confirmed diagnosis.
Most reversing valve and defrost board repairs finish same-visit with parts carried on the truck.

System would only blow cold air no matter what mode I selected.
Turned out the defrost thermostat had failed, so it never actually triggered the defrost cycle.
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.
Some frost during a normal defrost cycle is expected; ice that never clears points to a defrost board or thermostat fault.
Heat pumps have a reversing valve, defrost cycle, and often auxiliary heat strips that standard AC systems don't have.
Heat pumps naturally work harder as outdoor temperatures drop, and auxiliary heat should engage below a certain threshold.
These systems have their own fault-code patterns that our techs are trained to read.
No-heat heat pump calls get year-round priority dispatch across Schertz, TX.

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