Serving Lake City, TN and surrounding areas
Approved
In business since 2023
Free estimates
Offers commercial services
"Dustin did a great job and dedicated a large chunk of the day to the proper installation of two Ring floodlight cams. Outstanding customer service at a fair price."
Serving Lake City, TN and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Credit card accepted
"Very professional and affordable. Fixed my ac unit quick and didn't charge a crazy amount"
+1
Serving Lake City, TN and surrounding areas
Approved
In business since 2000
Free estimates
Credit card accepted
"I’ve had Jeff Davis at my home to check out the system so when I called Aire Care they do not work with Liberty Home Guard warranty system. So, I proceeded to work through LHG and was told it would be about ten days to give a quote. Well the gas furnace was declared DOA on my furnace of 27 years. I knew it shouldn’t take more than a half hour to quote my furnace so that’s when I realized the LHG company was a decoy to say we really don’t want to do this so we’ll drag our feet on this one. I took a survey on the internet and it pointed me to Aire Care (Jeff Davis company). I inquired with them and their salesman came over and gave me a quote. That’s when I decided to dump LHG and sign with Aire Care Knoxville. The next day LHG came through with slightly better quote but that was because they knew they were being dumped. All in all I’ve had a calmness about going with Aire Care as everyone is nice and very professional. So thanks Aire Care of Knoxville to allow warmth to come back to us"
+2
Serving Lake City, TN and surrounding areas
Approved
Free estimates
Emergency services offered
Small jobs welcome
"Chris did an amazing job came out on time and serviced my unit and was very professional"
+18
Serving Lake City, TN and surrounding areas
Approved
In business since 2013
Free estimates
Warranties offered
"Chris did a great job. no hassles and great prices"
+4
Serving Lake City, TN and surrounding areas
Approved
In business since 2025
Free estimates
Offers commercial services
"Jacob was very professional. He got the job done in a timely manner. He kept his costs low while providing excellent service. I would highly recommend him to anyone needing HVAC work done."
+18
Serving Lake City, TN and surrounding areas
Approved (Corporate)
In business since 1990
Free estimates
Emergency services offered
"Troy was wonderful and professional. He fixed the gap in the insulation around the ductwork in our attic at a minimal cost. He didn’t upsell us an expensive fix that we didn’t need. Hiller is my new go-to company."
+10
Serving Lake City, TN and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"I hired Sanchez Heating and Cooling a year ago. I am 110% satisfied with my heat and my air! Everything works perfectly and they also redid the duct work! It looks and works great. I had a question and called Johnny and he was here to fix it, immediately. They are quick, neat and professional. The price was great I can't recommend them enough."
+2
Serving Lake City, TN and surrounding areas
Approved
In business since 2023
Free estimates
Customers say: Quick response
"Great company with same day house call to service my heating unit."
+5
Serving Lake City, TN and surrounding areas
Approved (Corporate)
In business since 1985
Free estimates
Emergency services offered
"They will be on my list to contact if i need a plumber in the future. This job was time sensitive and we just could not line up a time for an estimate for the job."
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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