HVAC Repair Charleston SC | Call Holy City Heating & Air

In Charleston's sandy, humid climate, we recommend checking your air filter every 30 days and replacing standard 1-inch filters every 1-2 months. For homes near the coast or with pets, more frequent changes may be needed. A clogged filter strains your system, reduces efficiency, and can lead to costly repairs—regular changes are the easiest way to protect your HVAC investment.

Salt air accelerates corrosion on your condenser coils. We offer a specialized preventative maintenance service that includes a gentle coil cleaning to remove salt residue and a protective coil coating application. This barrier helps shield the delicate fins from salt and moisture. We also recommend keeping the unit elevated on a pad and trimming back any foliage to promote airflow and drying.

Absolutely. Reduced cooling is often the first sign of a clogged air filter or a corroded/dirty condenser coil. A dirty filter restricts airflow, while a corroded coil can't release heat properly. Before calling for major repairs, check and replace your filter. If that doesn't help, it's likely a coil issue—give us a call. We'll diagnose the problem, often solving it with a thorough cleaning or minor repair, saving you from a premature system replacement.