Serving Gilbert, SC and surrounding areas
Approved
Super Service Award Winner
In business since 2013
Free estimates
Emergency services offered
"Absolutely top notch. Came out on Sat., found the problem, came back with fan motor on SUNDAY and had cool air in one hour. Best customer service in Columbia. Best of all a fair price for the work!"
+11
Serving Gilbert, SC and surrounding areas
Approved
In business since 1976
Free estimates
Emergency services offered
"Called EF Martin for annual furnace maintenance service. Had no problems getting someone on the phone to schedule the appointment. The attendant was very pleasant and efficient. I was scheduled for 2 - 4pm appointment. The technician arrived at 2pm, which was great. Dennis was very thorough and explained everything to me clearly. I highly recommend this company!"
+2
Serving Gilbert, SC and surrounding areas
Approved (Corporate)
In business since 1976
Free estimates
Credit card accepted
"Jason and Jason were polite, knowledgeable without being pushy, followed up. And completed work in a timely manner. I will call them first if I have to install any more heads to my miniductless air conditioner."
Serving Gilbert, SC and surrounding areas
Approved
Credit card accepted
Offers commercial services
"Wagner HVAC does great work. The owner is a great person and does fantastic work. He maintains and installs my commercial refrigeration units as well as household HVAC. Brandon is one of his techs and he is top notch. Very knowledgeable and experienced team."
+11
Serving Gilbert, SC and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"Brandon is a small business owner. I needed duct work removed and replaced with new. He was very knowledgeable and answered any questions I had. Also very respectful. His employees were very nice. I would hire him again."
+20
Serving Gilbert, SC and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Warranties offered
"Al contacted me immediately, arrived the following morning and quickly assessed & corrected the issue. Great service!"
+11
Serving Gilbert, SC and surrounding areas
Approved (Corporate)
In business since 2012
Free estimates
Emergency services offered
"One of my AC units was not working correctly so as always I went to Angi to find someone qualified to do the work. CALL DAD HVAC called me right away and said they could come out that afternoon but due to my schedule had to wait until the next morning. Daniel arrived here promptly and worked all day until all the work was completed to my satisfaction and approval. I was so pleased with the work I decided to sign up for a year's contract with them which was very reasonably priced. If someone needs any HVAC services/repairs I highly recommend CALL DAD!"
Serving Gilbert, SC and surrounding areas
Approved
In business since 2023
Free estimates
Warranties offered
"Perfect! Punctual, friendly, did great work and plan to use again. Highly recommend!"
+198
Serving Gilbert, SC and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
2nd Wind Heating & Air Conditioning has proudly served Greater Columbia, Lexington, and the Midlands since 1985 as a trusted provider of HVAC, plumbing, and generator services. 2nd Wind offers a full range of heating and cooling solutions, along with tailored options like indoor air quality enhancements. Backed by a strong reputation, 2nd Wind remains the go-to choice for heating and air conditioning in Columbia.
+3
Serving Gilbert, SC and surrounding areas
Approved
In business since 2021
Free estimates
Credit card accepted
We are extremely passionate about the work that we do. With more than 8 years experience, you can depend on us to provide a high quality service at a fair and honest price. We understand that the future of our business depends upon our reputation and that is why customer service is by far our highest priority. If you are looking for a professional you can trust, please call today to schedule a no-obligation estimate!
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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