Home of the $0 FREE Service Call Club | 0% Interest for 24 Months
Home of the $0 FREE Service Call Club | 0% Interest for 24 Months
Home of the $0 FREE Service Call Club | 0% Interest for 24 Months
Home of the $0 FREE Service Call Club | 0% Interest for 24 Months
Home of the $0 FREE Service Call Club | 0% Interest for 24 Months
Home of the $0 FREE Service Call Club | 0% Interest for 24 Months
System running but air is cold? Likely a defrost board failure or refrigerant leak.
Smell smoke or burning dust? Turn it off immediately and call us.
Grinding or swooshing sounds? We diagnose mechanical failure fast.
Charleston may not get blizzards, but our humidity and salt air are silent killers for heating systems. While you’re enjoying the view, the Atlantic breeze is actively attacking your outdoor unit.
This isn’t just about rust; it is a chemical process called Galvanic Corrosion. When salt-laden moisture settles on your heat pump, it triggers a reaction between the copper tubing and aluminum fins. This leads to rapid Aluminum Fin Oxidation and severe Coil Degradation, causing your system to essentially “suffocate” and lose its ability to transfer heat efficiently.
Are you in the “Salt Zone”? If you live in Mount Pleasant, Isle of Palms, Folly Beach, or Sullivan’s Island, your system is at 2x the risk of premature failure compared to inland units. In these high-salinity neighborhoods, untreated corrosion eats through outdoor coils years before their time, often causing refrigerant leaks right in the middle of a winter cold snap.
Solution:
Valve is stuck in A/C mode, blocking heat flow.
System thinks it is summer and won't thaw the ice.
Leak in the coils prevents heat absorption.
Emergency heat strips are burned out or disconnected.
Normal for the first run of the season. Dust settles on heat strips.
Melting wire insulation caused by loose connections. Dangerous.
The motor is overheating because the bearings are locked up.
Restricted airflow causes components to overheat and smell singed.
A metal-on-metal clanking sound as the blade hits the cage.
Loud banging caused by liquid refrigerant entering the compressor.
A high-pitched screeching or grinding sound from the indoor handler.
A heavy vibration or "thumping" sound shaking the unit.
Minor repairs typically run $150 – $400; major component replacements start at $800. We provide upfront flat-rate pricing before we start.
Yes – we provide emergency heating repair throughout Charleston, Summerville, and Mount Pleasant. Call (843) 708-8735 for rapid dispatch.
In Charleston winters, this is often just Defrost Mode. If it lasts longer than 15 minutes, it likely indicates a refrigerant leak or thermostat failure.
Common causes are a faulty ignitor, blocked vent, or gas supply issue. We can diagnose and fix this safely in one visit.
From our headquarters in Summerville, SC, Coastal Carolina Comfort deploys technicians throughout Dorchester, Charleston, and Berkeley Counties. whether you are dealing with a frozen heat pump in Goose Creek, a furnace failure in West Ashley, or salt corrosion on Isle of Palms, our local team is minutes away.
Summerville
Knightsville
Oakbrook
Charleston (Downtown/Peninsula)
West Ashley
James Island
Johns Island
Mount Pleasant
Isle of Palms
Sullivan’s Island
Folly Beach
Daniel Island
Goose Creek
Ladson
Hanahan
Moncks Corner