Serving Crossville, 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 Crossville, TN and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Showed up when said would and explained everything he was doing. I will definitely be calling him again this spring to work on my central heating and air system."
Serving Crossville, TN and surrounding areas
Approved
Free estimates
Emergency services offered
Small jobs welcome
"Chris was very polite. He was punctual and gave me plenty of notice of when he would be here. He installed two huge ductless heat a/c units. He was very knowledgeable and gave me options for different units. I saw him measure at least twice and used a level to ensure everything was level. I loved his attention to detail. He seems extremely trustworthy. I felt very comfortable with him. I will recommend him to anyone I know who needs this type of work."
+18
Serving Crossville, TN and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
\nShield Mechanical is a family-owned and operated HVAC contractor offering a true one-stop shop for all your heating and cooling needs. From reliable service and repairs to complete system replacements, new installations, and full new-construction HVAC projects, we deliver quality workmanship you can depend on. At Shield Mechanical, we’re committed to solutions that keep your business or home running at its best — because our mission is simple: Protect Your Comfort.\n\n
+21
Serving Crossville, 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 Crossville, TN and surrounding areas
Approved
In business since 2022
Free estimates
Offers commercial services
"They were on time. Did a great job, even picked up after themselves afterwards!"
Serving Crossville, 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."
Serving Crossville, TN and surrounding areas
Approved (Corporate)
In business since 1991
Free estimates
Emergency services offered
"Extremely fast service! The lady who called to schedule and then again to confirm arrival time was friendly and professional. The technician, Bobby, was friendly, no pressure, and effective. Fixed my problems efficiently and the cost was reasonable. Thank you!"
+3
Serving Crossville, TN and surrounding areas
In business since 2018
Free estimates
Emergency services offered
"Showed up when said would and explained everything he was doing. I will definitely be calling him again this spring to work on my central heating and air system."
Serving Crossville, TN and surrounding areas
In business since 2023
Free estimates
Warranties offered
"They are very courteous, prompt and very efficient. This is a company you can completely rely on to get the job done on time and they left the area neat and clean. Overall very pleased with their quality of work and could not be happier with service I received. Highly recommend Hickman Heating & Air!"
+2
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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