Heat Pump Repair in Greenville, SC
Homes here need heat from October through April and cooling from May through September. If your system quits, tell us what it's doing and a licensed contractor who covers Greenville County will get in touch.
Tell us about the job
It takes about a minute.
Your heat pump works every month of the year in Greenville County
There is no season off. Winter nights averaging 34°F keep it running heat from October through April, then summer afternoons near 87°F put it right back on cooling duty through September. That is twelve months of a compressor cycling on and off, with almost no rest between seasons for parts to cool down and sit idle.
More than half of homes here heat with electricity, so when a heat pump falters on a cold night, there is often no backup keeping the house warm. And with 122 damaging wind events recorded here over the past ten years, and close to half of South Carolina households losing power for a full day or more in 2024, a storm can knock out a unit that was running fine the hour before. You may notice it short cycling, blowing air that is not quite warm enough, or not restarting at all after the power comes back.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 34°F
- the average winter night it heats against
- 87°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- Why is my heat pump blowing cold air?
- In heating mode, air from the vents that feels cool to the hand can still be warmer than the room, so it is not always a fault. If the air is truly cold and the house is not warming up, check that the thermostat is set to heat and not fan only. A common cause is the system stuck in defrost or a reversing valve that has failed to switch back, and that calls for a contractor to check. Low refrigerant will also cause this, and it will keep getting worse until it is repaired.
- Why is there ice on my heat pump?
- Some frost on the outdoor unit in winter is normal. Your heat pump pulls heat from the outside air, and on cold, damp nights that moisture freezes on the coil, so it runs a defrost cycle on its own to melt it off. With winter nights here averaging 34°F, that cycle runs often. Thick ice that does not clear, or ice that builds up when it is not cold out, points to a fan that has stopped turning or a defrost control that has failed, and that needs a contractor to look at it.
- Why is my heat pump running but not cooling?
- If the unit is running but the house is not cooling down, the most likely cause is low refrigerant from a leak. Check first that the outdoor unit is not blocked by leaves or debris and that the air filter is not clogged, since either one will cut airflow enough to lose cooling. If both are clear and the air from the vents is barely cool, a contractor will need to check the refrigerant charge and look for the leak. On the hottest afternoons here, near 87°F, a system already running short on refrigerant will struggle the most.