Serving Durham, NC and surrounding areas
Approved
In business since 1996
Free estimates
Warranties offered
"Absolutely amazing service! The whole transaction was handled professionally & diligently. Service techs were fantastic & professional. I highly recommend Maynor for all your heat & air services."
Serving Durham, NC and surrounding areas
Approved
Super Service Award Winner
In business since 1986
Free estimates
Emergency services offered
"Trent with Air Experts was professional and explained everything clearly. I highly recommend him when you need a hvac technician."
+5
Serving Durham, NC and surrounding areas
Approved
In business since 2002
Warranties offered
Credit card accepted
Advanced Appliance & Air Repair is a small family owned business based in central North Carolina with strong Christian values. Our goal is to provide you with technical service which is prompt, courteous, competent, honest, and at a fair price. We believe continually striving for this goal will ensure our survival and you will seek us again and again for your service needs.
Serving Durham, NC and surrounding areas
Approved
Super Service Award Winner
In business since 2007
Free estimates
Emergency services offered
"I highly recommend Carolina Comfort and Air. Tommy and Hassan were very professional and awesome to deal with."
+45
Serving Durham, NC and surrounding areas
Approved
In business since 1978
Free estimates
Emergency services offered
At Comfort Monster, we live by our motto, "Service So Good... It's Scary!" There are reasons why we were recently voted IndyWeek's Best of the Triangle for HVAC, why we have such a high rating on Angie's List and other review sites, and why our customers call us back to their homes year after year. Our technicians average more than 10 years of experience, and they get no incentives for selling you anything. Their focus is on helping you make informed HVAC decisions, not pushing services you don't need. Our system replacement estimates are always no-obligation and 100% free, and we will make financing your new system easy. A few of our credentials: NATE certified, Carrier Factory Authorized Dealer, licensed and insured.
Serving Durham, NC and surrounding areas
Approved
Super Service Award Winner
In business since 1973
Free estimates
Emergency services offered
"I called the Cape Fear Air Conditioning & Heating's Fayetteville location last Thursday and the person who answered the phone and scheduled the appointment was nice, and thankfully was able to get a technician scheduled to come out the next afternoon. The technician, Jeff, arrived on time, was professional, and was very nice. The technician was A+ and I would highly recommend Cape Fear A/C & Heating. I would definitely call them for future services needed and I appreciate the great customer service. Thank you! :)"
Serving Durham, NC and surrounding areas
Approved
In business since 1998
Free estimates
Credit card accepted
"They promptly responded and serviced the air conditioning unit on Saturday. He completed the work and now the unit is running well."
Serving Durham, NC and surrounding areas
Approved
In business since 2007
Free estimates
Credit card accepted
Arproser Heating and Air, has over 20 years of experience so you can rest assured you have hired the best. Being a locally owned and operated company, Arturo will be the one that greets you on the phone and the person on site ensuring your home's comfort and safety. Our reputation is based on service, safety, and quality, also Arturo is HVAC active instructor at Waketech Community College and this ensure you will get the best service at your fingers.
+24
Serving Durham, NC and surrounding areas
Approved (Corporate)
In business since 1976
Free estimates
Credit card accepted
"ARS did a very good job installing my air conditioning unit. They took the time necessary to move a piece which was in the way of installation. Then it was put back in the appropriate manner and when a part didn't work, they rigged it to work until the part could be replaced. The part was replaced the next day and the AC works as it should."
Serving Durham, NC and surrounding areas
Approved (Corporate)
In business since 1972
Free estimates
Credit card accepted
ARS is a trusted service provider in heating, air conditioning, and indoor air quality. Our courteous HVAC technicians are available 24/7 to provide you with expert service and repair. Our Comfort Advisors are ready to help you make the most effective installation or replacement decisions based on your home comfort needs. We are licensed and insured Estimates provided before work begins Major credit cards accepted. 100% financing with approved credit Residential and Commercial\n
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.
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