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Find Air conditioning pros in Charleston

Avatar for Maximum Air Experts
Maximum Air Experts
5.0(
19
)
Central A/C - Service or RepairWindow A/C Unit - Install

Serving Charleston, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Credit card accepted

"Damien came out and checked my unit and told me exactly what was wrong. The unit had a leak. He fixed the problem and checked back on several occasions to make sure that the unit was running properly ( never had a company to do a follow up like he did). Very impressed. He will be the only person that I will call for any future HVAC needs. Very professional and will highly recommend."
Response time6 hrs
1 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for TemperaturePro Charleston-Summerville
TemperaturePro Charleston-Summerville
4.9(
59
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or Service

Serving Charleston, SC and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"The service technicians were professional, friendly and very knowledgeable!!! In addition, the office personnel went out of their way to accommodate me with a service call. The professionalism demonstrated by this company will not be forgotten!! I highly recommend Temperature Pro to those needing fast and efficient HVAC service."
Response time30 mins
Response rate100%
21 neighbors recently requested a quote
Avatar for Carney & Son 72 Degrees
Carney & Son 72 Degrees
4.6(
79
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For BusinessCentral Air Cleaner - Repair or Service

Serving Charleston, SC and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"Zach arrived on time and quickly checked and repaired the Central Air Conditioning System. The system works better then it has since it was new. I plan to call Carney & Son 72 Degrees for future maintenance of our system."
Carney & Son 72 Degrees
Carney & Son 72 Degrees
Carney & Son 72 Degrees
Before Duct Cleaning
After Duct Cleaning

+11

Response time7 hrs
10 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Quality Pro Services
Quality Pro Services
5.0(
21
)
Central A/C - InstallCentral Air Cleaner - Install or ReplaceDuctless Mini-split A/C - Install or Replace

Serving Charleston, SC and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Quality Pro Services Heating & Air is a locally owned, family-operated HVAC company proudly serving Charleston and surrounding communities. As Charleston natives, we?re committed to keeping our neighbors comfortable year-round with honest service and dependable workmanship. We provide residential heating and cooling repairs, system replacements, and routine maintenance to keep your system running at its best. Our team responds quickly, communicates clearly, and treats your home with care and respect. When you call QPS, you?re choosing a local team that truly cares about your family?s comfort.

QPS Business Photos
HVAC Maintenance
HVAC Maintenance
HVAC Maintenance
HVAC Maintenance

+1

1 neighbors recently requested a quote
Avatar for TrueNorth Coastal Comfort
TrueNorth Coastal Comfort
4.9(
9
)
Central A/C - Service or Repair

Serving Charleston, SC and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Tim was super friendly, knowledgeable and reliable. I hired him to install two of my smart thermostats. I just bought my condo so he checked my HVAC unit and thank God he did because my Freon was very low and it was very dirty. His service plan was very affordable. He also checked my air filters for me as well as helped with a security camera and a leak under my sink. Such a sincere, hardworking and kind man. I give him the HIGHEST recommendation."
Response time2 hrs
Response rate97%
Recommended by88%of homeowners
Avatar for FIX-IT 24/7 AIR CONDITIONING, PLUMBING AND HEATING LLC
FIX-IT 24/7 AIR CONDITIONING, PLUMBING AND HEATING LLC
5.0(
5
)
Central A/C - Service or Repair

Serving Charleston, SC and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

Fix-It 24/7 provides AC, heating, and plumbing services across the Charleston area. We focus on preventative care that extends the life of your home’s systems in a humid coastal climate. \n\nWe offer 24/7 availability with fast response times. Same-day service available, or your diagnostic is waived. \n\nWith more than 3,000 5-star reviews, homeowners trust us for reliable service. New customers can take advantage of our $39 AC deep clean.

3 neighbors recently requested a quote
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FAQs for air conditioning projects in Charleston, SC

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Charleston, SC homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.