Heat Pump Repair in Parker, AZ
Homes here need heat from November through February and cooling from April through October. If your system quits, tell us what it's doing and a licensed contractor who covers La Paz County will get in touch.
Tell us about the job
It takes about a minute.
Parker asks a lot of a heat pump
Your heat pump runs 11 months a year here. Summer afternoons average 105°F, and it works to keep the house cool from April through October. Then November through February it has to reverse itself and pull heat out of nights averaging 42°F. That constant switching between modes wears on the reversing valve, and a stuck valve means the system blows the wrong temperature air or won't change modes at all.
Most homes in La Paz County heat with electricity, which means the compressor carries the load in both directions, all year, including the months it hits 105°F outside. A compressor working that hard for that long is the part most likely to wear out, and when it does, the system stops heating or cooling entirely. La Paz County has also seen 32 damaging wind events over the past ten years, and power loss during one can shut a heat pump down until the power comes back.
- 4 months
- November through February, your system heats
- 7 months
- April through October, it cools
- 42°F
- the average winter night it heats against
- 105°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
Arizona requires HVAC contractors to hold a state license.
The license belongs to the contractor's business, not to this repair, so it covers the company the Registrar of Contractors licensed rather than the specific job on your heat pump.
The repair itself involves opening the refrigerant side of the system, and that work falls under a separate federal rule. Any technician doing it, in Arizona or any other state, has to hold EPA Section 608 certification. That certification is not part of the Arizona license. It applies to the person handling the refrigerant, wherever the job is done.
Sources: Arizona State Legislature · Arizona Registrar of Contractors
- Why is my heat pump blowing cold air?
- In heating mode, a heat pump puts out air that feels cool compared to a furnace, even when it's working right, because that air is much closer to your skin temperature than furnace air is. If the air feels cold rather than just cool, check that the thermostat is set to heat and not fan only. If it's set right and the air is still cold, the system may be stuck in defrost or low on refrigerant, and a contractor will need to check it.
- Why is there ice on my heat pump?
- Some frost on the outdoor unit in winter is normal. Your heat pump melts it off on its own every so often by briefly running in reverse, and you may see steam or hear a change in sound when it does this. If the coil is heavily coated in ice rather than light frost, or the ice isn't clearing after an hour or two, airflow across the outdoor coil is likely blocked or the refrigerant charge is off, and it needs a contractor to look at it.
- Why is my heat pump running but not cooling?
- If the outdoor unit and indoor fan are both running but the air coming out isn't cold, start with the filter. A clogged filter cuts off airflow across the indoor coil enough that it can ice over, and once that happens the system keeps running without actually cooling. With summer afternoons here reaching 105°F, a system stuck in that state will fall further behind the longer it runs. If the filter is clean and you're still not getting cold air, the charge or a component in the system needs a licensed contractor to diagnose it.

