Serving Louisville, TN and surrounding areas
Approved
In business since 2017
Credit card accepted
Customers say: Quality work
"Great job guys. Forrest and Jason quickly diagnosed the problem and had my air back on in minutes."
+2
Serving Louisville, TN and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Amazing! Professional, courteous, honest, and skilled! I will use Smith mechanical heating & air for hvac forever! Highly highly recommend!!"
+3
Serving Louisville, TN and surrounding areas
Approved
Free estimates
Offers commercial services
"CM Walter Heat and Air did a fantastic job on my older AC unit. We had another company come out first. They couldn’t get the parts in and installed for another three days and the quote seemed high so I called Martin and he came out the same day. Diagnosed the problem and had me back up in running in minutes. He also saved me a ton of money. After it was all said and done he saved me over 800 dollars! I highly recommend this company to anyone in need of AC work!"
Serving Louisville, TN and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Responsive and informative while patiently explaining and fixing the problem with our air conditioning ventilation. Strongly recommend Honest A/C."
+6
Serving Louisville, TN and surrounding areas
Approved
Super Service Award Winner
In business since 2025
Free estimates
Credit card accepted
"Great job!! Very pleased with Friends Heating and Air who installed a new package air conditioner for our cabin! They were prompt, professional, very knowledgeable & highly competitive. Strongly recommend!!"
Serving Louisville, 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 Louisville, 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 Louisville, TN and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
"New heat + ac unit installed. Very satisfied. We recommend him."
Serving Louisville, TN and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"They came into my mothers older home and explained everything they were doing, step by step. They replaced her unit and made improvements to her air ducts. They were honest and courteous! They left her feeling comfortable and safe and as if she were being treated like family. I cannot speak highly enough of Premier Services Group! I highly recommend this company!"
+11
Serving Louisville, TN and surrounding areas
Approved
Free estimates
Emergency services offered
Credit card accepted
"Patrick is professional, knowledgeable, and a great communicator. He went out of his way to find parts for our older heat pump unit. Thank you!"
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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