Serving Charleston Afb, SC and surrounding areas
Approved
Super Service Award Winner
In business since 2014
Free estimates
Credit card accepted
"Exceptional service, very knowledgeable & worked in a timely manner. I will always recommend Maximum Air Experts, LLC!"
Serving Charleston Afb, SC and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"Very good experience...Ac was blowing hot air...it was raining hard so I held an umbrella for the tech while he diagnosed my unit...he was honest, nice, and didnt overcharge...very very happy with this business"
Serving Charleston Afb, 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."
+2
Serving Charleston Afb, 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."
+11
Serving Charleston Afb, SC and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"These guys did an excellent job on a change out if you live in the Charleston area, give them a call."
+13
Serving Charleston Afb, 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."
Serving Charleston Afb, SC and surrounding areas
Approved (Corporate)
In business since 2001
Free estimates
Emergency services offered
"Very expensive but available quickly"
+2
Serving Charleston Afb, SC and surrounding areas
Approved
In business since 1982
Free estimates
Offers commercial services
"Highly Recommend! Stephen and his team did a great job replacing our Heat Pump system. My wife asked a LOT of questions and 5Star answered each and every one of them without complaint."
Serving Charleston Afb, SC and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1976
Free estimates
Credit card accepted
"Tony repaired air scrubber in good order."
Serving Charleston Afb, 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.
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.
From average costs to expert advice, get all the answers you need to get your job done.
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