Serving Oliver Springs, TN and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"Calvin was great. He was quick and efficient and now my air is back to feeling cool!"
Serving Oliver Springs, TN and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Highly recommend honest, great family business"
+6
Serving Oliver Springs, TN and surrounding areas
Approved
In business since 2023
Free estimates
Offers commercial services
"Dustin was very responsive as soon as I entered my request and continued to be very communicative and knowledgeable throughout replacing two fixtures and looking at some outlets. He did great work on what I needed him to do today and I am sure he would do the same on anything else I needed!"
Serving Oliver Springs, TN and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Credit card accepted
"Travis came to my residence and was very knowledgeable & skilled while servicing my A/C unit. He was able to answer any questions I had. He was able to get parts within a few days. The servicing fee was reasonable, Highly recommend and will be definitely call Travis again for any all heating/ air issues again."
+1
Serving Oliver Springs, TN and surrounding areas
Approved
In business since 2000
Free estimates
Credit card accepted
"We have been clients of Aire-Care for at least Five years! The company is excellent, from all employees from Heather, Kendra, Logan , Chris etc....... They are extremely professional, very knowledgeable, and have excellent work ethics. Logan recently did a service call and he was unbelievably thorough. I highly recommend this heat and air company to anyone!!!!!!!! Sincerely Mary Lee."
+2
Serving Oliver Springs, 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 Oliver Springs, TN and surrounding areas
Approved
In business since 2025
Free estimates
Offers commercial services
"Did a great job fixing my toilet and the valve to the toilet. Will bring him back to fix more plumbing issues."
+18
Serving Oliver Springs, 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 Oliver Springs, TN and surrounding areas
Approved (Corporate)
In business since 1985
Free estimates
Emergency services offered
With 40 years of experience serving Knoxville and the surrounding areas, Quality Plumbing, Heating, Cooling & Electrical provides expert HVAC solutions tailored to your needs. Whether you need heating, cooling, or system maintenance, our skilled technicians ensure your home stays comfortable year-round. We take a customer-focused approach, delivering professional, reliable service with every job.
Serving Oliver Springs, TN and surrounding areas
Approved
In business since 2007
Free estimates
Emergency services offered
"Rocky was extremely helpful on the phone and Jackson was stellar doing my hearing ductwork so much so that I will use Aire Serv for two additional projects. Jackson was thorough and thoughtful in dealing my issue and did an amazing job fabricating a difficult section of ductwork under my new kitchen cabinets. Very well done and a credit to Air Serv. Thank you!!"
+6
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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