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Find Air conditioning pros in Charleston

Avatar for TemperaturePro Charleston-Summerville
TemperaturePro Charleston-Summerville
4.9(
59
)

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%
24 neighbors recently requested a quote
Avatar for ALL-STAR AIR PROS LLC
ALL-STAR AIR PROS LLC
5.0(
13
)

Serving Charleston, SC and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Russell was very thorough. He checked everything, asked me questions, and showed evidence of issues. He did more than simply fix a problem. He educated me on how to determine when a problem is arising. He offers a phenomenal benefit plan to keep HVAC unit in great condition year round. I would highly recommend him for your HVAC needs."
Clean Air
Breathing problems
Heat Pump A/C
Furnace A/C
Duct Work, Works

+2

Response time3 hrs
Response rate100%
16 neighbors recently requested a quote
Avatar for Carney & Son 72 Degrees
Carney & Son 72 Degrees
4.6(
79
)

Serving Charleston, SC and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"Be very careful about the need for duct cleaning. 2 other companies came to review our issue, too much dust. Both agreed that there was no evidence of mold, nor mildew. Both said that we should use higher quality filters in our air return ducts."
Carney & Son 72 Degrees
Carney & Son 72 Degrees
Carney & Son 72 Degrees
Before Duct Cleaning
After Duct Cleaning

+11

Response time7 hrs
16 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Quality Pro Services
Quality Pro Services
5.0(
21
)

Serving Charleston, SC and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"The HVAC technician who came out for my central air cleaner replacement did an outstanding job. He showed up on time, explained everything clearly, and made the whole process quick and stress-free. You could tell he really knew his stuff… He also took the time to answer my questions and even gave a few helpful tips to keep the system running smoothly. It’s hard to find reliable, honest service like that these days. He didn’t try to sell me the most expensive product but the one he said was best fit for my needs. Highly recommend if you want the job done right the first time!"
Tech Kyle
Tech Phil
HVAC Maintenance
HVAC Maintenance
Carrier Unit

+13

19 neighbors recently requested a quote
Avatar for TrueNorth Coastal Comfort
TrueNorth Coastal Comfort
4.9(
9
)

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%
1 neighbors recently requested a quote
Avatar for Carolina Custom Air
Carolina Custom Air
5.0(
4
)

Serving Charleston, SC and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Emergency services offered

"Following a biannual inspection and cleaning appointment, a need was determined to open part of the ducting from the AHU to inspect a damper. The technician opened the duct, determined a damper stem appeared to be broken resulting in the damper falling to the bottom of the duct. Carolina Custom Air has already called making an appointment the next day to reinstall the damper after repair. Great work, great company. I recommend them completely."
Response time2 days
8 neighbors recently requested a quote
Recommended by75%of homeowners
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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.