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Cooling

AC Repair in Charleston, SC

When your air conditioner stops keeping up with Charleston heat, Holy City Heating & Air diagnoses the actual fault — not just the symptom — and gives you a clear recommendation before any work begins. We repair all major brands, and our phones are answered until 9 PM.

Holy City technician's close-up of a diagnosed leaking evaporator coil during an AC repair
A real diagnosis from our service log: leaking evaporator coil, caught early.

What this service covers

AC repair covers everything from a tripped capacitor or clogged condensate drain to refrigerant leaks, failed compressors, and control-board faults. A proper repair visit starts with diagnostics: measuring temperatures, pressures, airflow, and electrical readings to find the root cause rather than swapping parts until something works.

Our technicians are seasoned professionals who live and work in the Charleston area. We explain what failed, why it failed, and what your options are — in plain language — before you approve anything.

Why it matters in the Lowcountry

Charleston summers are long, humid, and unforgiving. An air conditioner that limps along doesn't just leave you uncomfortable — it runs longer, costs more to operate, and dumps less humidity out of your home, which the Lowcountry climate punishes quickly.

Small faults rarely stay small. A weak capacitor stresses the compressor; a clogged drain line becomes a ceiling stain; low refrigerant slowly destroys the outdoor unit. Catching problems early is almost always the cheaper path.

Signs it’s time to call

  • Warm or weak air from the vents
  • The system runs constantly but the house stays muggy
  • Short-cycling — the unit starts and stops every few minutes
  • Ice on the refrigerant lines or indoor coil
  • Water around the indoor unit or a musty smell at the vents
  • Breakers tripping or unusual noises from the outdoor unit

How the visit works

  1. Talk to a real person

    Call (843) 790-6504 — we offer call support until 9 PM, so you're never leaving a voicemail into the void.

  2. Full diagnostic

    Your technician tests electrical components, refrigerant pressures, airflow, and drainage to isolate the true fault, then walks you through what they found.

  3. Clear options before work begins

    You get a straightforward recommendation and estimate. If the smarter money is on replacement rather than repair, we'll say so — without pressure.

  4. The repair, done right

    We complete the repair, verify system performance against manufacturer specifications, and leave your home the way we found it.

What affects the price

Every home is different, so we quote in writing before work begins. The main factors:

  • The failed component (a capacitor is very different from a compressor)
  • Refrigerant type and how much the system needs
  • System age and parts availability
  • Accessibility — attic air handlers and rooftop or crawl-space equipment take longer
  • Whether the fault caused secondary damage that also needs correcting

Repair or replace?

If your system is under roughly ten years old and the fault is isolated, repair is usually the right call.

If the compressor or coil has failed on an older unit that uses phased-out refrigerant, replacement often costs less over the next five years than keeping the old system alive.

We give you both numbers and our honest read — the decision stays yours. Financing through Goodleap is available when replacement makes sense.

Keeping it running

  • Change filters regularly — restricted airflow is behind a large share of summer breakdowns.
  • Keep the outdoor unit clear of leaves, grass clippings, and shrubs.
  • In our salt-air climate, an annual coil cleaning and inspection meaningfully extends equipment life.
  • A maintenance plan catches weak components before they fail in August.

AC Repair: common questions


Do you answer after hours?

Yes. Our office runs Monday through Friday, 7 AM to 7 PM, and we provide call support until 9 PM every day, so you can reach a person on evenings and weekends when your system quits.

Which brands do you repair?

We service all major residential brands. Holy City is also a Daikin partner, so we know that equipment particularly well.

Why is my AC freezing up?

Ice usually points to restricted airflow (a clogged filter or blocked return) or low refrigerant. Turn the system off, let it thaw, and have it diagnosed — running it frozen can damage the compressor. Our Learning Center article on AC freeze-ups covers this in depth.

Will you try to sell me a new system instead of repairing mine?

No. Our approach is honest recommendations, not high-pressure sales. If a repair is the sensible option, that's what we'll recommend; if the math genuinely favors replacement, we'll show you why and let you decide.

Rainbow Row's pastel historic houses on East Bay Street in Charleston, South Carolina

Y’all deserve to be comfortable.

Schedule an appointment with us today — or call and talk to a real person, until 9 PM.