(843) 642-0881

Air conditioning repair service

First Call Heating & Cooling offers air conditioning repair service for common and urgent cooling problems. Services include AC diagnostics, AC refrigerant recharge, compressor repair, frozen coil rep

Services in Air conditioning repair service

AC diagnostics

AC diagnostics pinpoints why your cooling system is not performing the way it should. Instead of guessing, this service focuses on testing the components and conditions that affect comfort, airflow, temperature control, and system operation. For homes and small commercial spaces, AC diagnostics helps identify whether the issue is electrical, mechanical, airflow-related, thermostat-related, or tied to refrigerant performance so the right repair can be made.

Warm air coming from vents
AC not turning on or shutting off unexpectedly
Learn more

AC refrigerant recharge

AC refrigerant recharge restores proper refrigerant levels when a cooling system is low and no longer transferring heat efficiently. This service is not just about adding refrigerant; it also involves confirming system performance and checking for signs of leaks or related issues. When cooling has dropped off, runtimes are longer, or the air coming from vents is not cold enough, refrigerant charge may need to be evaluated.

Warm or mildly cool air from vents
Loss of cooling during high outdoor temperatures
Learn more

Compressor repair

Compressor repair addresses one of the most important parts of your air conditioning system. The compressor is responsible for circulating refrigerant and supporting the cooling cycle, so when it starts failing, the AC may stop cooling, trip breakers, make loud noises, or struggle to start. This service focuses on identifying whether the compressor itself, its electrical support components, or related system conditions are causing the problem.

Outdoor unit hums but does not start properly
AC runs without producing enough cooling
Learn more

Frozen coil repair

Frozen coil repair addresses ice buildup on the indoor evaporator coil or refrigerant lines that stops your AC from cooling properly. A frozen coil usually points to an underlying airflow or refrigerant issue, not just a temporary glitch. This service focuses on safely thawing the system as needed, identifying the root cause, and correcting the conditions that caused the coil to freeze in the first place.

Ice buildup on the indoor coil or refrigerant line
Weak airflow caused by a frozen evaporator coil
Learn more

Emergency AC repair

Emergency AC repair is for urgent cooling problems that cannot wait for routine service, especially when the system has stopped working during extreme heat or is showing signs of electrical or mechanical failure. This service focuses on restoring safe, functional cooling as quickly as possible and identifying immediate repair needs. It is especially important when indoor temperatures are rising fast, the AC will not start, or the system is making alarming noises.

Complete AC shutdown during hot weather
System blowing hot air with no cooling recovery
Learn more

About Air conditioning repair service

First Call Heating & Cooling provides Air conditioning repair service for cooling systems that are not working properly or have stopped working altogether. Repair work in this category includes AC diagnostics to pinpoint the source of the problem, AC refrigerant recharge when low refrigerant is affecting cooling performance, compressor repair for major system operation issues, frozen coil repair when airflow or cooling has been restricted, and emergency AC repair for urgent situations when fast attention is needed. This category is appropriate when an air conditioner is blowing warm air, cycling incorrectly, making unusual noises, icing up, or failing to maintain the temperature set on the thermostat. AC diagnostics help determine whether the issue is tied to refrigerant levels, compressor function, airflow restrictions, or another component problem. Frozen coil repair and refrigerant recharge are especially important when the system is struggling to cool and airflow has become weak. Emergency AC repair is available for situations where waiting is not practical. The goal is to restore cooling as efficiently as possible while addressing the actual source of the malfunction.

Have Questions?

We answer common questions about air conditioning repair service on our FAQ page.

View frequently asked questions
Reviewed by StevenLast reviewed April 2026

Air conditioning repair service

Free estimates on all services. Call for same-day availability.

(843) 642-0881

Why Trust First Call

  • Licensed
  • Insured
  • Warranties Available
  • Service Guarantees Available
  • Financing Options Available
View on Google

Need HVAC Help? We're One Call Away.

Schedule a free estimate or get same-day service across the greater Charleston area.