Serving Powell, TN and surrounding areas
Approved
In business since 2000
Free estimates
Credit card accepted
"We have been using Admiral Heating and Air for both service and new installation for 16 years. They are always prompt and do an excellent job. The spring and fall maintenance program is a great way to make sure everything is in good working order. John is the best!"
+269
Serving Powell, 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 Powell, 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 Powell, 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 Powell, TN and surrounding areas
Approved
Free estimates
Offers commercial services
"I cannot share enough good things about Martin with CM Walter Heating and Air. We recently had a routine AC check done and our AC unit was really noisy after and not functioning like it should. We called CM and he came out same day within the hour of the phone call and spent the entire day making sure our unit was fixed. He is extremely professional and kind- even took his shoes off before he came in the house! We will absolutely be using him for anything that pops up in the future! Don?t look at anyone else, call now!"
Serving Powell, 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 Powell, 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 Powell, 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 Powell, TN and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
"Absolutely impressed with the service! The heat and air specialist was on time, super knowledgeable, and incredibly efficient. They quickly diagnosed the issue with my HVAC system and explained everything in a way that was easy to understand. The repair was done perfectly, and my system has been running smoothly ever since. Plus, their rates were very fair. Highly recommend them for anyone in need of a reliable and skilled specialist!"
Serving Powell, TN and surrounding areas
Approved
In business since 2007
Free estimates
Emergency services offered
"Water heater needed replacing , they were fast and thorough and cleaned up like they were never there!"
+11
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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