Serving North Charleston, 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 North Charleston, 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 North Charleston, SC and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"So far it has been great looking forward to to the follow up and continue services from this company"
+2
Serving North 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."
+11
Serving North Charleston, 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 North 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."
Serving North Charleston, SC and surrounding areas
Approved (Corporate)
In business since 2001
Free estimates
Emergency services offered
"Very expensive but available quickly"
+2
Serving North Charleston, 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 North Charleston, SC and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1976
Free estimates
Credit card accepted
"Before todayâ s visit I would be rating this company -1 star due to the lack of service and communication but after the technician Jay came out and took his time to find and fix the problem that several other techs had previously came out to fix, I am extremely happy that the problem with my AC unit is fixed. Great costumer service Jay!"
Serving North Charleston, SC and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"These guys showed up and showed out! They beat all 3 of my estimates by a mile, 1 on sheer price alone and 2 on offering me better equipment that would in fact treat me better?. Believe me I researched the brands. The other companies tried to sell me crap at high cost? thanks to them I?m not melting in my own home anymore."
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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