Aaron Plumbing handles heat pump repair, maintenance, and replacement for homeowners throughout Roswell, Alpharetta, Sandy Springs, Milton, and the north Atlanta metro. All major brands, same-day service, no emergency fees.
Heat Pump Services
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Heat Pump Repair
Not heating or cooling, short cycling, running constantly, or making unusual noises — we diagnose heat pump problems accurately and repair them with the right parts the first time.
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Seasonal Tune-Up
We inspect refrigerant levels, clean coils, check electrical connections, test defrost controls, and verify the system switches properly between heating and cooling modes.
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Heat Pump Replacement
When a heat pump reaches end of life, we handle the full replacement — removal, new unit installation, refrigerant charge, startup, and testing. We size the new system correctly for your home.
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Mini-Split Systems
Ductless mini-split heat pumps for additions, garages, sunrooms, or whole-home applications. We install and service single-zone and multi-zone systems from all major manufacturers.
Why Heat Pumps Work Well in North Atlanta
Heat pumps move heat rather than generate it, which makes them significantly more efficient than gas furnaces and standard electric resistance heating. They work by extracting heat from outdoor air — even in cold weather — and moving it inside. In the Atlanta area’s moderate climate, heat pumps operate efficiently for the vast majority of the heating season. Only on the coldest nights (below about 35°F) does a heat pump need supplemental heat strips to keep up, and those nights are relatively rare in Roswell and Alpharetta compared to areas further north.
For homes without gas service, a heat pump is typically the most efficient heating option available. For homes with gas, the comparison between a gas furnace and a heat pump comes down to local utility rates and how cold your winters actually get — something worth discussing with us before you decide.
Common Heat Pump Problems
A heat pump that runs constantly in cold weather isn’t necessarily broken — at low outdoor temperatures, the system works harder to extract heat and may run for extended periods. However, a heat pump that can’t maintain temperature on a mild day, or that blows cold air in heating mode, has a problem. Refrigerant leaks are the most common cause of reduced heating and cooling capacity. A failed reversing valve — the component that switches the system between heating and cooling modes — is another common issue specific to heat pumps. Defrost cycle problems cause ice to build up on the outdoor unit in cold weather. We diagnose all of these accurately before recommending a repair.
Frequently Asked Questions
My heat pump is blowing cold air in heat mode. What’s wrong?
The most common causes are a refrigerant leak, a failed reversing valve, or a defrost issue causing ice buildup on the outdoor unit. It could also be the system is in defrost mode briefly, which is normal. If it’s consistently blowing cold in heat mode, call us to diagnose it properly.
How long do heat pumps last?
Typically 12–15 years with regular maintenance. Because heat pumps run year-round for both heating and cooling, they accumulate more operating hours than systems that only handle one season. Annual tune-ups extend the life significantly.
Is there ice on my outdoor unit — is that normal?
Some frost on the outdoor unit coil during cold weather is normal. Heat pumps have a defrost cycle specifically to handle this. A solid block of ice coating the entire unit that doesn’t clear within an hour or so indicates a defrost control problem or a refrigerant issue. Call us if the ice doesn’t clear on its own.