Heat Pump Acting Up? We'll Diagnose the Whole System
A heat pump handles both your heating and cooling, so when it acts up, it can hit you twice as hard. Whether it's blowing cool air on a cold morning, running constantly, or just not keeping up, we check the whole system, not just the symptom you noticed.
Three things homeowners often mistake for a broken heat pump
Heat pumps behave differently from a furnace, and a few normal behaviors get mistaken for failures every winter. Here's what's actually going on.
1
The outdoor unit is steaming or has ice on it
In cold, damp weather, frost can build up on the outdoor coil. Your heat pump runs a defrost cycle to clear it, which can look like steam or a brief puff of smoke. During defrost, the system may also blow cool air inside for a few minutes while it borrows heat to melt the frost outside. This is normal operation, not a malfunction, as long as it resolves on its own and the unit isn't caked in ice for hours.
2
The air from your vents feels cool, even though the system is heating
A heat pump moves heat rather than burning fuel to create it, so the air coming out of your vents in heating mode is warmer than the air in the room, but it's often cooler than body temperature. Hold your hand near a vent expecting furnace-hot air and it can feel like something's wrong when the system is actually working correctly. If a room isn't warming up over time, that's worth a call. If the air simply feels less hot than you expected, that's usually just how a heat pump works.
3
Auxiliary or emergency heat kicks in and your power bill jumps
On especially cold mornings, a heat pump can struggle to pull enough heat from outside air fast enough, so it brings in backup electric resistance heat (often called auxiliary or emergency heat) to close the gap. That backup heat is far less efficient than normal heat pump operation, and if it runs for extended periods, you'll see it on your bill. Occasional short use on the coldest mornings is expected. Auxiliary heat running for hours at a time, or an "EM HEAT" light staying on when it's not truly needed, usually points to a system that isn't keeping up and should be checked.
What's included in a heat pump repair visit?
Full diagnostic, indoors and out
We check both the outdoor and indoor units, not just the one showing symptoms.
Refrigerant, electrical, and controls check
We verify refrigerant levels, inspect electrical components, and test the controls.
Reversing valve inspection
This is the part that switches your system between heating and cooling, so we check it closely.
Defrost cycle and auxiliary heat check
We confirm the defrost cycle and auxiliary heat are working as they should.
Price before we begin
You get a clear price before any repair work starts.
Plain-language explanation
We walk you through what's wrong and why, in terms that make sense.
Common heat pump problems we fix
System runs constantly without reaching the set temperature
Outdoor unit won't turn on
Ice buildup that doesn't clear after a defrost cycle
Blowing cold air in heating mode for more than a few minutes
If any of these sound familiar, it's time to call
Systems rarely fail without warning. Catching it early is almost always cheaper than an after-hours repair.
Pricing and estimates
You'll get a clear price before any repair work starts, with no hidden fees. Heat pump diagnostics take a bit more time than a single-mode system since we're checking both heating and cooling function, and that's reflected honestly in the estimate, not buried in it. Ask about payment options if needed.
When heat pump issues tend to show up
Heat pumps get tested hardest during temperature extremes: the coldest mornings of winter and the hottest afternoons of summer. Since Northwest Atlanta's biggest search peak for heating problems runs December through February, with January the single biggest month, a heat pump that's been struggling quietly in fall is likely to fail outright once winter settles in. A repair now is easier to schedule than one during a cold snap.
Heat Pump Repair FAQs
Have more questions? Give us a call.