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AC units after being repaired by a local pro

5 Best AC Repair Services in Charleston, SC

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Written By Max Peterson|Last Updated: May 18, 2024

In warm, humid conditions, a summer air conditioner (AC) malfunction can be a nightmare. If you find yourself in need of AC repair in Charleston, don't worry - we have you covered with who to call next. Whether it's simple repairs or a full replacement you need, This Old House recommends starting your AC repair company search with these highly-rated Charleston providers.

Top AC Repair Companies in Charleston, SC

Pardee Service Experts Logo

Pardee Service Experts

Based on 3,707 customer reviews.

Services Offered

Ac RepairMaintenanceEmergency ServicesVentilationInspectionFiltrationAc InstallationFurnace InstallationIndoor Air Quality


  • Free quote
  • Clear pricing policy
  • Informative resources
1952 Belgrade Ave, Charleston, SC 843-766-9001 serviceexperts.com
Carney & Son 72 Degrees Logo

Carney & Son 72 Degrees

Based on 702 customer reviews.

Services Offered

Indoor Air QualityDuct CleaningMaintenanceAc RepairDuctlessAc InstallationFurnace Installation


  • Reliable customer support
  • Prompt service delivery
  • Clear pricing policy
3528 Meek's Farm Rd, Johns Island, SC 843-762-4304 carneyandson.com
AGL Heating & Air Logo

AGL Heating & Air

Based on 534 customer reviews.

Services Offered

Ac RepairIndoor Air QualityFurnace InstallationFiltrationMaintenanceAc Installation


  • Informative resources
  • Clear pricing policy
  • Reliable customer support
3429 Maybank Hwy Suite A1, Johns Island, SC 843-795-0066 aglair.com
AC Heating and Air Conditioning Services Logo

AC Heating and Air Conditioning Services

Based on 31 customer reviews.

Services Offered

MaintenanceEmergency ServicesAc InstallationIndoor Air QualityAc RepairFurnace InstallationDuctless


  • Informative resources
  • Clear pricing policy
  • Reliable customer support
1943 Belgrade Ave #1, Charleston, SC 843-277-9928 achvac.com

More Local Hvac Companies

Holy City Heating & Air, LLC

User Reviews: 4.6/5 

238 E Bay St
Charleston, SC 29401

5 Star Charleston Heating and Air

User Reviews: 4.6/5 

520 Folly Rd PMB 173
Charleston, SC 29412

Passion Heating and Air

User Reviews: 4.6/5 

3436 Maybank Hwy unit c
Johns Island, SC 29455

Southern Seasons Heating & Air Conditioning

User Reviews: 4.5/5 

1514 N Hwy 17 Suite B
Mt Pleasant, SC 29464

Olde Towne Heating & Air, LLC

User Reviews: 4.4/5 

443 Long Point Rd Suite F
Mt Pleasant, SC 29464

Green Dot Heating & Air

User Reviews: 4.5/5 

3609 River Rd Suite 230
Johns Island, SC 29455

Smith's Heating and Air Conditioning Co., Inc.

User Reviews: 3.5/5 

4759 Franchise St
North Charleston, SC 29418

Brian's Mechanical, LLC

User Reviews: 4.5/5 

3525 Iron Horse Rd Suite 104
Ladson, SC 29456

Pace's Comfort Cooling LLC

User Reviews: 4.7/5 

202 Loblolly Cir
Ladson, SC 29456

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

AC units after being repaired by a local pro

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Facts about Charleston
Average Max Temp Percentile:89.8%
August Average Max Temp:87.5°F
Climate Zone:Hot-Humid
Average Energy Cost:$0.13/kWh
Median Year Houses Built:1972
Average Heat Waves per Year:1.32

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

Common Types of Air Conditioners

HVAC technicians have the expertise to service most air conditioner varieties, but knowing more about what you have can be beneficial. Below, we'll outline each of the common AC models.

  • Split ACs: Split air conditioner systems have two main elements: one indoors and one outdoors. They offer peaceful operation, enhanced efficiency, ductwork options, and more cooling capability versus mini-splits.
  • Portable air conditioners: As the name implies, portable AC systems don't require permanent installation or ductwork. Instead, they remove hot air through an exhaust hose connected to a window or nearby vent. They're popular for condos, apartments, or individual rooms.
  • Ductless mini-split: Ductless mini-split AC units have an exterior unit and one or more indoor units, with no ductwork required. They offer flexible installation options, higher energy efficiency, and individual room temperature control.
  • Window ACs: Window air conditioners are a popular choice for Charleston townhomes, apartments, and condos. These budget-friendly, convenient units are designed for cooling single rooms and small spaces, and they fit snugly in a window frame or dedicated wall slot. Many window-mounted air conditioner users set up their units without professional assistance, though technicians can still help with maintenance and repairs.
  • Central AC: These are the most common home air conditioners, offering consistent, precise temperature control. They feature a central unit that cools and purifies outside air and sends it through ducts to various rooms in your home.

How to Choose Your Charleston AC Repair Service

With Charleston's extreme heat, AC problems are critical to fix for your safety and comfort. However, don't race to sign a contract until you know a company is the best fit for you. We recommend following these steps in your research.

Confirm the Company Is Properly Licensed and Insured

To work in the Palmetto State, HVAC companies must earn a Mechanical Contractor license from the Department of Labor, Licensing, and Regulation. New applicants must pass a comprehensive trade exam and present their business registration certificate. Companies from Georgia, Louisiana, North Carolina, Utah, Texas, and Ohio can apply for a license by reciprocity.

Many states and cities also require companies to carry liability insurance. Even if your community doesn't require it, we still recommend choosing an insured company. This will protect you if an accident happens or something gets damaged.

Read Customer Reviews

Find customer reviews on the Better Business Bureau (BBB) website for each company you're interested in. The BBB accredits contractors that handle complaints professionally and honor their warranties.

It's normal for even the best AC repair providers to have both positive and negative reviews. Read each one carefully, and avoid a business if most reviewers had subpar experiences.

Compare Estimates

We recommend getting at least three different estimates to find the best value. Get a written copy of each quote, and learn more about installer guarantees, manufacturer warranties, emergency repair availability and permitting fees.

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Frequently Asked Questions About AC Repair in Charleston

How much can I expect to pay for AC repair in Charleston?

Your AC repair costs will hinge on the type of unit you have and the malfunctioning part. A basic repair job like sorting out a thermostat might cost $150–$250, whereas a more intricate fix like exchanging the compressor will be more expensive.

See the average costs for common AC repairs below.

Common RepairAverage Cost
Clogged air filter$63–$168
Electrical circuits$200–$250
Drainage problems$100–$150
Refrigerant leak$400–$1500
Frozen condenser coils$1,260–$3,781
Fan or air blower issues$150–$200
Compressor replacement$600–$1,596

What are some signs that I should call an HVAC repair company?

Here are some of the most frequent AC issues you might face: It's best to contact a professional HVAC technician if you encounter any of these problems.

How often should Charleston homeowners have their AC systems serviced?

Homeowners should have their AC systems serviced annually to ensure optimal performance. This usually involves cleaning the outdoor unit of brush and debris. Regular servicing can help to maintain the system's efficiency and prolong its lifespan.

Why is my AC running but not cooling?

If your AC is running but not cooling, a clogged condenser coil could be the culprit. Normally, the AC’s condenser fan pulls air into the outdoor unit through the condenser coil to remove heat energy from your home. A technician can help by clearing the clog or replacing a damaged coil.

How many years until I should replace my AC unit?

With regular care, your air conditioner's lifespan could be 10-15 years. Remember that parts frequently become obsolete as time goes on. If your HVAC contractor can't find a critical replacement part, you might need to consider installing a new AC.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.