North Charleston shares the Lowcountry's hot, muggy summers and mild winters, which puts nearly all the HVAC workload on the cooling side — a well-sized, efficient AC system running for months at a stretch matters far more here than heating capacity.
North Charleston homeowners typically pay $4,500-$9,500 for a full AC replacement. Get a home-specific number with our AC Replacement Cost Calculator.
Lowcountry humidity adds a heavy latent-heat load on top of temperature alone, so a system sized only for square footage can struggle. Our AC Sizing Calculator factors in climate and humidity for a more realistic tonnage.
Twice a year is common here given how many months the system runs — once in spring before peak season and again mid-summer for a filter and coil check.
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