Serving Wallace, NC and surrounding areas
Approved
In business since 2007
Free estimates
Emergency services offered
"Very well. Service tech is friendly and knowledgeable. 2nd time I've used Air Flow Masters and will call again if work to be done."
+7
Serving Wallace, NC and surrounding areas
Approved
Super Service Award Winner
In business since 2007
Free estimates
Emergency services offered
"We were super pleased with the crew who installed our new a/c system. Tommy with Carolina Comfort Air, worked efficiently, professionally, and was a really nice guy. We highly recommend Carolina Comfort."
+45
Serving Wallace, NC and surrounding areas
Approved (Corporate)
In business since 1972
Free estimates
Credit card accepted
"Chad came out the same day and did a very thorough analysis of the inside and exterior heat/AC unit. He changed the filters and all his recommendations to both me and with my husband on the phone as well about his concerns. We value his expertise and we are very impressed with this company. Glad we made the decision to switch to ARS."
Serving Wallace, NC and surrounding areas
Approved
In business since 2008
Free estimates
Warranties offered
"Richard was great - it’s hard to find a quick, fair and reliable AC company in Wilmington during the summer, and we highly recommend Advanced Air Solutions."
Serving Wallace, NC and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"This company showed up on time. They were very friendly and did a great job."
+13
Serving Wallace, NC and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
NuBlue Air serves all of the Lake Norman region's needs. Our team of expert technicians specialize in residential hvac repairs and installations such as ac units, furnaces, indoor air quality products, vent/duct cleaning, and much more. We are your HVAC technicians of choice. NuBlue Electric Plumbing & Air is Redefining Service Excellence in the Lake Norman region! \n\nHave an Electrical OR Plumbing OR Air issue? Our NuBlue team can help with those! A one-stop-shop, the NuBlue team is able to take care of all Electric, Plumbing, and Air needs.\n\nVisit our website for coupons and specials!
Serving Wallace, NC and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
"We called Corey to check the a/c at our business and he came very quickly. He made repairs and it is working like a charm. Very professional and knowledgeable. We will be recommending him and calling on him in the future."
+4
Serving Wallace, NC and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"The B's team was professional and prompt. Made recommendation of an additional service that will need to be looked at to keep unit running efficiently and cool properly. Repairs were made quickly and my AC restored."
Serving Wallace, NC and surrounding areas
Approved
In business since 2017
Emergency services offered
Warranties offered
"It has worked out so well for me and my family. And yeah, please do it all day. Please let me know if I can help. Please let me know when I get home, and I will be home in the next few days. Please let me know when I can get you. Please let me know when I get back. Please let me know if I need anything else. Please let me know if I can get you a text or text me or text or call me when I can."
+10
Serving Wallace, NC and surrounding areas
Approved
Customers say: True professional
"Everything went up very smoothly and there was great communication. I enjoyed my experience!"
+7
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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