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Find Air conditioning pros in Knoxville

Avatar for Admiral Heating and Air Conditioning, Inc.
Admiral Heating and Air Conditioning, Inc.
4.9(
32
)

Serving Knoxville, TN and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"John has taken care of all my HVAC needs for over 15 years. It's always an easy decision for me . . . I would not use anyone else but Admiral Heating and Air Conditioning, and I have recommended John to many friends over the years. My father was a home builder and I am an engineer, so I know what to look for in terms of professionalism, doing the job right, pride in one's workmanship, attention to detail, and treating the customer fairly and with respect. John and his company excel in all these areas. Thank you John for another outstanding experience with the install of the new American Standard heating and cooling package."
Gas Pack
Gas Pack and Split Air Conditioner
American Standard Air Handler
2 American Standard Heat Pump Condensing Units
American Standard Heat Pump

+269

Recommended by92%of homeowners
Avatar for Friends Heating and Air
Friends Heating and Air
5.0(
19
)

Serving Knoxville, 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!!"
Response time1 day
Response rate87%
6 neighbors recently requested a quote
Avatar for Premier Services Group, Inc.
Premier Services Group, Inc.
4.9(
18
)

Serving Knoxville, 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!"
Kerbela Shrine Temple Kno
Kerbela Shrine Temple Kno
Carson Newman College
Carson Newman College
Downtown Knoxville Hilton

+11

Response time2 days
Recommended by81%of homeowners
Avatar for AC's Heating & Air
AC's Heating & Air
5.0(
13
)

Serving Knoxville, TN and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"AC Heating and Air were punctual, tidy and thorough and last but not least they were friendly! All characteristics that are very important to me! Would definitely call them to come out again if needed."
Adam Installing Ductwork
A Couple Finished Runs
Adam Installing Fresh Air Vent
Gracie Wiring Indoor unit
Trunk and Runs Installed by Adam and Gracie

+1

Response time5 hrs
Response rate97%
1 neighbors recently requested a quote
Avatar for Brown's Heating & Air
Brown's Heating & Air
4.6(
79
)

Serving Knoxville, TN and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Very professional, polite and explained everything he was doing. Gave me my options that will ultimately need to be made. Upfront about everything and prices are fair. Will definitely use Brown's Heating & Air again when the time comes."
Our work
Our work
Response time5 hrs
Response rate87%
8 neighbors recently requested a quote
Avatar for CM Walter Heating & Air LLC
CM Walter Heating & Air LLC
5.0(
13
)

Serving Knoxville, TN and surrounding areas

Approved

Free estimates

Offers commercial services

"We needed some help with an electronic air cleaner we had installed by another hvac company (they claimed that the unit was working properly) Martin came by and confirmed that there was an issue. He spent time talking to the manufacturer and then helped us solve the issue in a timely and cost effective manner. He also did a routine yearly cleaning of our A/C unit and the furnace, and we are very pleased with the work and experience. 10/10 for communication, ease of scheduling, and value of the work. I highly recommend Martin for all of your HVAC needs"
Avatar for DC Heat And Air
DC Heat And Air
5.0(
8
)

Serving Knoxville, 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."
4 neighbors recently requested a quote
Recommended by87%of homeowners
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Showing 1-10 of 304

FAQs for air conditioning projects in Knoxville, TN

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.

The Knoxville, TN homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.