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
If your monthly cooling costs have spiked by 20% or more, your aging unit is likely losing its SEER efficiency.
Most systems in Charleston fail after 10–12 years due to relentless salt-air corrosion and high run times.
Older units using R-410A or R-22 are increasingly expensive to repair; modern systems use eco-friendly R-454B for better performance.
Living in the Lowcountry means your HVAC system faces a unique set of challenges that standard units aren’t built to survive. At Coastal Carolina Comfort, we don’t just “swap boxes”—we specialize in coastal-engineered solutions designed for the atmospheric chemistry of the South Carolina coast.
Combatting Salt-Air Corrosion: Homeowners on Daniel Island, Mount Pleasant, and Isle of Palms face corrosion rates up to 300% higher than inland neighbors. We provide specialized marine-grade protective coatings for outdoor condensers to prevent the rapid “aluminum rot” that destroys standard units in just a few years.
Defeating Extreme Humidity: Charleston’s humidity averages 75% year-round, putting a massive strain on your compressor. We optimize our high-efficiency SEER2 systems for maximum latent heat removal, preventing that “clammy” indoor feeling and protecting your home from mold and “Lowcountry Dirty Sock Syndrome”.
Hyper-Local Expertise: Whether you are in a historic downtown Charleston home or a new build in Nexton or Cane Bay, our NATE-certified technicians understand the specific building codes and environmental needs of your exact neighborhood.
Modern Technology Leadership: We specialize in the latest R-454B refrigerant systems and variable-speed technology, which can slash your summer energy bills by up to 40–50% compared to older, single-stage units.
Standard HVAC units in Charleston rot from the inside out within 10-12 years. If your system is this age, salt corrosion has likely compromised the coils beyond repair.
Did your electric bill jump 20% or more without a change in usage? This means your compressor is dying and working twice as hard to produce the same amount of cool air.
If your AC runs but the house still feels sticky or humid (above 60%), your system has lost its "latent capacity." It can cool the air, but it can no longer remove the Lowcountry moisture.
If you are constantly paying to "top off" refrigerant, you have a leak. With 2026 regulations making older refrigerants scarce and expensive, fixing leaks is no longer a smart investment.
We don’t just set the unit down. We apply specialized anti-corrosive coatings to key components and use marine-grade fasteners to fight the Summerville and Charleston salt air that eats standard metal for breakfast.
Lowcountry weather is unpredictable. We install every condenser on elevated, flood-resistant composite pads with high-velocity hurricane straps, ensuring your system stays secure when the storms roll in.
Stop shouting over your AC. We specialize in modern Variable-Speed and Inverter systems (like the Daikin Fit) that run at a lower, quieter steady state—eliminating the loud "bang" of traditional units starting up.
A new unit is useless if the air doesn't move. We perform a static pressure test on your ductwork during installation to eliminate hot spots, ensuring the master bedroom is just as cool as the living room.
In 2026, a complete high-efficiency HVAC replacement in the Charleston area typically ranges from $7,500 to $14,000, depending on tonnage, SEER2 rating, and ductwork requirements. We provide flat-rate, transparent pricing with 0% financing options available for qualified homeowners.
We recommend brands that offer Inverter Technology and Marine-Grade protection, such as Daikin. These systems are designed to resist salt corrosion and handle the high latent heat (humidity) of the Lowcountry better than standard single-stage builder-grade units.
Not always, but often recommended in older Lowcountry homes. Leaky ducts can lose up to 30% of your conditioned air. During your consultation, we perform a duct pressure test to see if your current ductwork can handle the airflow of a modern, high-efficiency system.
SEER2 is the new 2023/2025 federal standard that tests units under higher static pressure—mimicking real-world conditions (like dirty filters or long duct runs). A 14.3 SEER2 unit is roughly equivalent to an old 15 SEER unit. We install systems that meet or exceed all 2026 South Carolina energy codes
From our headquarters in Summerville, SC, Coastal Carolina Comfort deploys installation teams throughout Dorchester, Charleston, and Berkeley Counties. Whether you need a heat pump in Goose Creek, a gas furnace in West Ashley, or a salt-shielded AC 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