Heating & Air Conditioning in Mt Pleasant, SC

Alcorn Heating & Air handles residential and light-commercial heating and cooling across Mt Pleasant and the surrounding area. From an AC that quit in a heat wave to a furnace that won't light on the first cold night, the fastest way to get help is to call — you'll reach a local technician, not a call center.

Blower & motor repair

Failed blower motors, capacitors, and fan issues restored to spec.

Seasonal tune-ups

Preventive maintenance that keeps efficiency high and catches cheap fixes early.

Heat pump service

Install, repair, and tune-ups for air-source and cold-climate heat pumps.

Indoor air quality

Filtration, humidifiers, dehumidifiers, and ventilation for healthier air.

Duct cleaning & sealing

Airflow restoration and leak sealing to fix uneven rooms and dusty air.

Ductless mini-splits

Single and multi-zone systems for additions, garages, and rooms that never cool right.

Heating & Cooling in Mt Pleasant, South Carolina

Low-country humidity and long hot seasons keep Mt Pleasant air conditioners working most of the year, with moisture control and clean coils central to performance. Mild winters favor heat pumps, and coastal salt air rewards regular outdoor unit care. Local providers like Alcorn Heating & Air understand these conditions and service equipment accordingly.

Common HVAC Problems in Mt Pleasant

Frozen evaporator coil

Ice on the indoor coil chokes cooling entirely. Restricted airflow or low refrigerant are the usual causes, and running the unit while frozen risks compressor damage.

Water around the indoor unit

Pooling water typically means a clogged condensate drain line. Caught early it is a quick fix; ignored, it can damage floors, drywall, and the air handler itself.

Thermostat not matching room temperature

When rooms feel different from the set temperature, the fix may be as simple as thermostat placement or as involved as duct balancing and zoning.

Furnace ignition failures

A furnace that clicks but will not light may have a dirty flame sensor, faulty igniter, or gas supply issue — problems best diagnosed by a trained technician.

Why Choose a Local South Carolina Company

A provider who works these neighborhoods daily has seen your exact system and failure pattern before. Local companies live on reputation, and word travels fast in the community when work is done right. Established local providers stand behind their work long after the invoice is paid.

Seasonal Tips for South Carolina Homes

Keep the condensate drain line clear; in humid climates algae builds fast and an overflow can shut the system down mid-summer.
Watch humidity, not just temperature: a system that cools but does not dehumidify may be oversized or low on refrigerant.
Set ceiling fans to run counterclockwise in summer so you can raise the thermostat a couple of degrees without losing comfort.
Rinse the outdoor condenser coil each spring — in long cooling seasons a dirty coil can cut efficiency by double digits.

Frequently Asked Questions

How often should I change my air filter?

Every 1–3 months for standard filters, depending on pets, dust, and usage. A clean filter is the cheapest way to protect airflow, efficiency, and indoor air quality.

Why is my AC running constantly in summer?

During heat waves some runtime is normal, but nonstop operation with poor cooling suggests low refrigerant, dirty coils, duct leaks, or an undersized system. A service visit can pinpoint which.

What size HVAC system does my home need?

Sizing depends on square footage, insulation, windows, ceiling height, and local climate — not guesswork. An oversized unit short-cycles and an undersized one never keeps up, so a proper load calculation matters.

How often should HVAC systems be serviced in Mt Pleasant?

Most manufacturers and technicians recommend twice a year — a cooling check in spring and a heating check in fall. Given Mt Pleasant's weather patterns, staying on that schedule protects efficiency and catches small faults before peak season.

What are signs of duct problems?

Rooms that never reach temperature, whistling sounds, dusty air, and high bills all point to leaky or unbalanced ductwork. Sealing and balancing often deliver the biggest comfort improvement per dollar.