Heat Pump Repair in North Charleston, South Carolina
A heat pump repair visit in North Charleston, SC usually costs $180 to $880. Where you land depends on the part. A capacitor or defrost sensor sits at the low end, while a reversing valve or defrost control board pushes the bill toward the top.
Compare Free Quotes in North Charleston
North Charleston Weather and HVAC Load
NOAA's 1991-2020 climate normals put North Charleston at 1,844 heating degree days and 2,434 cooling degree days per year. Neither season dominates in North Charleston. That balance is a big reason heat pumps and dual-fuel systems sell well in South Carolina. On average, North Charleston gets 22 freezing nights and 64 days above 90°F per year.
| Heating degree days / year | 1,844 |
|---|---|
| Cooling degree days / year | 2,434 |
| Nights at or below 32°F | 22 |
| Days above 90°F | 64 |
| Average low / high | 56.4°F / 76.7°F |
North Charleston Housing Stock
Census figures put the median build year in North Charleston at 1995, so a typical house here has about 31 years on it. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. About 23,000 households here own their home, 48.5% of the occupied total. Homes here have a median value of $267,700 and households a median income of $62,789. Those two numbers drive the labor adjustment in our estimate.
Between 2020 and 2025, NOAA's Storm Events Database logged 11 hail days and 34 days with damaging thunderstorm winds in Charleston County. The largest hail reported was 1.25 inches across. Hail flattens the thin aluminum fins on condenser coils and cuts airflow. After a big storm, take a look at the outdoor unit; homeowners insurance often covers the damage. Charleston County also had 8 tornado days in that period.
Symptoms Worth a Service Call
- The backup heat runs nonstop
- Ice builds up on the unit and doesn't melt off
- Cool air coming out in heating mode
- The system is stuck in heating or cooling
What Moves the Price
- The diagnostic fee
- Emergency or after-hours service
- Which part needs replacing: a reversing valve, defrost board or sensor
- Whether the parts warranty still covers it
- Finding and fixing a refrigerant leak, then recharging
For North Charleston we raised the national figures about 3%, based on local income, home values and climate-based equipment sizing. Get at least three written quotes; real bids can land outside this range.
What the Quote Should Cover
- Diagnosis in both heating and cooling mode
- Checking refrigerant pressures
- A defrost cycle test
- A full test run
- Replacing the failed parts
South Carolina Licensing and Efficiency Rules
South Carolina is in the DOE's Southeast region, where new split central air conditioners need at least 14.3 SEER2 (13.8 SEER2 for systems of 45,000 BTU/h and up). Most repairs don't need a permit. Anyone who opens the refrigerant circuit does need EPA Section 608 certification, and in South Carolina the company should carry a state license or registration. Ask for both.
Before You Hire
- Light frost on the outdoor unit in winter is normal. A solid block of ice is not.
- Book maintenance twice a year, once before summer and once before winter.
- Many heat pumps carry a 10-year parts warranty if they were registered. Find out whether yours was.
Get Free Heat Pump Repair Quotes in North Charleston
Tell us where you are and up to three licensed local pros will get in touch. You don't have to hire any of them.
Heat Pump Repair Questions from North Charleston Homeowners
What does heat pump repair cost in North Charleston?
Most bills land between $180 and $880, including the service call. A typical visit is about $570. Night and weekend calls cost more.
Is it normal for a heat pump to freeze?
A thin layer of frost in winter is normal, and the defrost cycle should clear it. Heavy ice that stays usually means a defrost control or airflow problem.
Why is my heat pump blowing cold air?
For a few minutes during a defrost cycle, that's normal. If it keeps going, the usual causes are a stuck reversing valve, low refrigerant or a thermostat set to the wrong mode.
Heat Pump Repair Near North Charleston
- Charleston $220 to $1,060
- Mount Pleasant $250 to $1,230
- Columbia $170 to $820
- Rock Hill $170 to $830
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Charleston International Airport; NOAA Storm Events Database 2020-2025, Charleston County. Prices are our estimates, not contractor quotes. Updated 2026.