Heating Repair in Hanahan, SC — Heat Pump & Aging-System Specialists
Hanahan is an inland Navy town of older brick ranches and newer subdivisions, almost all on electric heat pumps. The classic call here is not a beach problem — it is a heat pump that dropped onto expensive backup strip heat and spiked your power bill. Coastal Carolina Comfort diagnoses and fixes it same-day on most calls, with written pricing first.
The Heating Repairs Hanahan
Homeowners Call Us For Most
Hanahan grew up around the WWII Navy depot, so neighborhoods like Highland Park, Yeamans Park, and Otranto are full of 1940s-70s brick ranches — many still pushing air through undersized, deteriorated original ductwork. That is why a “no heat” call here is frequently a worn-out system plus leaky ducts, not just one failed part. About eleven miles inland, salt air is not the issue; system age and humidity are.
Because the Lowcountry’s heating design temperature is only around 24°F, almost every Hanahan home runs an electric heat pump rather than a gas furnace. The classic local complaint is a sky-high winter power bill, and it usually traces to a heat pump quietly running on electric backup (emergency) heat because the compressor side failed or the defrost control stuck — exactly the fault a furnace-focused company would miss.
The newer two-story slab homes in Tanner Plantation and Eagle Landing were often built with a single heat pump sized for the whole house. Fifteen-plus years in, those systems show uneven floor-to-floor heating and short cycling. And in the older ranches, indoor air handlers sit in tight closets where year-round humidity rusts coils, clogs condensate drains, and corrodes the air handler — a hidden cause of intermittent winter heat failures.
Stuck on costly strip heat
A spiking winter bill usually means the heat pump dropped onto electric emergency heat because the compressor or defrost control failed. We find the real fault and get you off the expensive backup, not just reset the thermostat.
Aging ranches & old ductwork
The 1940s-70s ranches in Otranto and Highland Park often run aging heat pumps on undersized, leaky original ducts. We diagnose the system and the airflow, so uneven heat gets fixed at the source.
Humidity, not salt
Eleven miles inland, your enemy is humidity, not ocean salt. Tight-closet air handlers rust coils, clog condensate drains, and corrode secondary parts — a leading hidden cause of intermittent winter heat we check on every call.
Diagnosis Before Repair —
How Coastal Works
The same four-step process every Hanahan service call runs through, from the moment you pick up the phone to a verified, working system.
Same-Day Dispatch
We get a NATE-certified tech to your Hanahan home fast, same-day on most calls. You talk to our local team, not a national call center.
Full Heat-Pump Diagnostic
Reversing valve, defrost board, compressor, the electric backup heat, refrigerant charge, airflow through that older ductwork, and the humidity-exposed indoor coil. We check each one rather than guess.
Written Pricing First
You get a flat-rate written estimate in plain language before any work begins. If replacement is the smarter money on an older system, we will tell you straight.
Repair & Verify
We fix it with manufacturer-spec parts, confirm the system is off backup heat and holding a proper temperature rise, and leave a written summary with a parts-and-labor warranty.
Every Common Heating
Failure, Fixed in Hanahan
Our trucks carry the parts behind most Lowcountry heat-pump breakdowns, so the majority of Hanahan repairs finish in one visit.
Most Hanahan heat pump repairs land between $150 and $700, depending on the part. Capacitors, contactors, and thermostats sit at the low end; a reversing valve, compressor, or defrost board costs more. You always get the number in writing before we start. On bigger repairs or a replacement, we offer 0% financing for 24 months.
Call (843) 708-8735What Neighbors Say After the Repair
Is Your Hanahan Heat Pump
Worth Repairing?
Between 1940s-70s ranches and 2000s subdivisions, a lot of Hanahan systems sit right on the repair-or-replace line. Here is the honest framework our techs use.
Repair makes sense when
- The system is under about 10 to 12 years old
- The repair costs less than half a new system
- It is a single failed part — capacitor, contactor, defrost board, or sensor
- The system still runs current R-410A refrigerant
Replacement is smarter when
- The unit is 12 to 15+ years old with a major failure
- You are facing a compressor or reversing valve on an aging system
- You have had repeated repairs in the past couple of seasons
- It still runs phased-out R-22 refrigerant
Not sure where your system lands? That is the diagnostic call — we will show you the numbers and let you decide. Start with our Charleston heating repair team and we will route the closest Hanahan tech to you.
Neighborhoods We Cover Around Hanahan
We repair heat pumps and heating systems throughout Hanahan (29410) — from the historic Navy-town core to the newer subdivisions off the Goose Creek Reservoir.
Serving the rest of the area:
Common Questions From
Hanahan Homeowners
No Heat in Hanahan? We Move Fast.
One call puts a NATE-certified technician on your Hanahan heat pump, same-day on most jobs, with a written estimate before any work and parts on the truck.
Coastal Carolina Comfort keeps Hanahan warm from the Otranto ranches to Tanner Plantation: see the full Charleston heating repair page and the complete Charleston HVAC company hub. Call (843) 708-8735.