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
"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."
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
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.
+1
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
In business since 2018
Free estimates
Credit card accepted
"Brent and CJ did an amazing job replacing my hvac system with one that works beautifully! They are very knowledgeable and professional. But, they are not just about business. They truly care about their customers and go above and beyond to make sure to not just get the job done, but to get the job done well... the first time. Thank you, Brent and CJ!"
+7
Serving North Charleston, SC and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1976
Free estimates
Credit card accepted
"I use their maintenance program"
Serving North 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.
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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