
Serving Greeneville, TN and surrounding areas
Approved
In business since 2020
Free estimates
Credit card accepted
"They showed up early, did the job well, recommended the most reasonable solution. Micah is a good guy."


Serving Greeneville, TN and surrounding areas
Approved
In business since 2020
Free estimates
Credit card accepted
"They showed up early, did the job well, recommended the most reasonable solution. Micah is a good guy."

Serving Greeneville, TN and surrounding areas
Approved
Free estimates
Credit card accepted
Offers commercial services
"We recently had the pleasure of working with Mountain Comfort Heating & Air and I can confidently say this was one of the best service experiences I’ve ever had. Owner Josh Jenkins is the definition of professionalism, knowledge, and integrity in the HVAC industry. From the moment he arrived, it was obvious he truly understands his craft at an expert level. Josh took the time to thoroughly diagnose the issue instead of rushing to a quick fix like many companies do. He explained everything clearly, answered every question with patience, and made us feel completely confident in the work being performed. His attention to detail, workmanship, and pride in what he does are absolutely exceptional. What really sets Josh apart is not just his technical ability, but the way he treats people. He genuinely cares about his customers, their comfort, and doing the job the right way the first time Thank you Josh!"





+3

Serving Greeneville, 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 Greeneville, TN and surrounding areas
Approved
In business since 2017
Free estimates
Offers commercial services
We offer over 10 years of experience in the tech industry. We take on a wide range of tech projects to include full installations well as repairs and a variety of other jobs. We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

Serving Greeneville, TN and surrounding areas
Approved
Free estimates
Emergency services offered
Small jobs welcome
"We had an absolutely wonderful experience. Not only was this man extremely nice but very thorough in his work and we are proud to say that we will be continuing to use him for other projects in the future. Highly recommend!!"





+44

Serving Greeneville, TN and surrounding areas
Approved
Free estimates
Emergency services offered
Credit card accepted
We are dedicated to provide quality and timely services. We have been in business for 14 years and have a total of 20+ years experience \n

Serving Greeneville, TN and surrounding areas
Approved
Free estimates
Credit card accepted
Offers commercial services
Appalachian Airworks is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.




Serving Greeneville, TN and surrounding areas
Approved
In business since 2007
Free estimates
Credit card accepted
All Star Property Maintenance is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
Serving Greeneville, TN and surrounding areas
Approved
🔧 One Call, Multiple Solutions — 10 Years of Home Repair & HVAC Experience\n\nNeed it fixed, installed, or upgraded? I’ve got you covered.\n\nWith 10 years of hands-on experience, I bring the knowledge, skill, and confidence to handle a wide variety of home repairs, HVAC services, installations, and handyman projects. I take pride in quality workmanship, honest communication, and getting the job done right the first time.\n\nFrom everyday household repairs to more involved installations, my goal is simple: provide dependable service, deliver quality results, and make your life easier.\n\n🛠️ Services I Offer\n\n* HVAC Services: Heating and air conditioning troubleshooting, repairs, and installations.\n* Appliance Installation & Repair: Water heaters, dishwashers, refrigerators, stoves, and microwaves.\n* Cabinet Services: Cabinet installation, repairs, adjustments, and upgrades.\n* Painting: Interior painting, touch-ups, and painting-related repairs.\n* Minor Plumbing: Faucet replacements, toilet i

Serving Greeneville, TN and surrounding areas
In business since 2025
Free estimates
Credit card accepted
"Absolutely amazing experience with these guys. Was given a great price. Work was outstanding, and super quick to boot. Would highly recommend them for any HVAC needs yall have."
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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