Heating & Air Conditioning in Central, SC

George Dunn & Son Heating and Cooling handles residential and light-commercial heating and cooling across Central 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.

AC installation & replacement

Properly sized new systems with load calculations, from value units to high-SEER equipment.

Duct cleaning & sealing

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

Blower & motor repair

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

Heat pump service

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

Ductless mini-splits

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

Emergency service

Urgent no-heat and no-cool calls handled fast, before small faults become failures.

Heating & Cooling in Central, South Carolina

Low-country humidity and long hot seasons keep Central 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 George Dunn & Son Heating and Cooling understand these conditions and service equipment accordingly.

Common HVAC Problems in Central

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.

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.

Uneven temperatures between floors

Multi-level homes often suffer hot upstairs rooms in summer. Duct adjustments, zoning dampers, or a ductless unit for the problem area are common solutions.

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.

Why Choose a Local South Carolina Company

Understanding the regional climate means recommendations sized for real conditions, not national averages. Established local providers stand behind their work long after the invoice is paid. Local companies live on reputation, and word travels fast in the community when work is done right.

Seasonal Tips for South Carolina Homes

Watch humidity, not just temperature: a system that cools but does not dehumidify may be oversized or low on refrigerant.
Book pre-season AC tune-ups in early spring — waiting until the first heat wave means longer waits and higher stakes.
Rinse the outdoor condenser coil each spring — in long cooling seasons a dirty coil can cut efficiency by double digits.
Shade the outdoor unit if possible, but keep at least two feet of clearance for airflow on all sides.

Frequently Asked Questions

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.

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.

How long does an air conditioner last?

A well-maintained central air conditioner typically lasts 12–17 years. Systems that run long seasons or skip maintenance wear out sooner, while regular tune-ups and prompt repairs stretch lifespan toward the upper end.

Should I repair or replace my system?

A common rule: if the unit is past 12 years old and the repair costs more than a third of replacement, replacement usually wins. A technician can weigh age, efficiency, refrigerant type, and repair history for your specific unit.

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.