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Best Auto Repair, Knoxville

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Air Conditioning Repair For Cars and Trucks

 95 Verified Review(s)

If your car's air conditioning system is not keeping you cool don't let the hot weather make you miserable. Get back to cruising in comfort. Bring your car or truck by B & M Automotive & Diesel Service in Knoxville and we'll get your AC working again. Call now at 865-922-7111 or stop by the shop at 7301 Maynardville Pike, Knoxville, TN, 37938.

Five Signs Your Car AC Needs To Be Serviced

  • Your car air conditioning blows only slightly cooler than the outside air.
  • Your car's air conditioner blows air that smells like mildew and mold.
  • Your A/C only works while driving.
  • You have low airflow even at the highest fan setting.
  • Water condensing or dripping on your foot while driving.

Don't wait! If your car's A/C is working at reduced efficiency, it's worth a visit to B & M Automotive & Diesel Service. Taking care of regular maintenance now can help you avoid more expensive AC repair costs down the road. Sometimes fixing a broken air conditioner is as simple and cost effective as adding new coolant.

Most truck and car air conditioning systems break eventually with usage. Hoses that feed the AC unit may crack, clog or drip if not serviced. Let us service your car or truck and keep your cooling system performing at its peak. Call us at 865-922-7111 to learn more about how we can get your air conditioning running again!

Common Automotive AC Repair Services

Recharging Your Car's AC
B & M Automotive & Diesel Service in Knoxville for Recharging Your Freon Fast

In some instances when your car's air conditioning (AC) begins to lose its cooling power or fails to blow cool air, it may be time for a simple freon recharge. Recharging your freon is often a fast and inexpensive repair that can help you beat the summer heat. But leaking freon may be caused by a cracked hose or seal. It is often an indicator that a more significant repair is needed.

More: Recharging your car's AC

Repair Your Car's AC Compressor
Let B & M Automotive & Diesel Service Repair Your Car's AC Compressor

The cool air in your car is produced primarily by the compressor. The four main functions that your vehicle's compressor carries out include pressurizing the refrigerant to cool cabin air, monitoring and controlling temperature output, sensing temperature changes inside and outside the vehicle, and moving air to your car's AC condenser.

More: Repair Your Car's AC Compressor

Repair Your Car's AC Condenser
Discover the Best AC Condenser Repair in Knoxville

Your vehicle's A/C condenser is usually located in the front of the radiator. When your AC compressor is pressurizing the refrigerant flows to the condenser to reduce the temperature and pressure. The condenser is a vital component in keeping your car's cabin temperature cool. It moves the cooled liquid refrigerant to the receiver/dryer or accumulator.

More: Repair Your Car's AC Condenser

Repair Your Car's AC Evaporator
Repair or Replace Your Car's AC Evaporator at B & M Automotive & Diesel Service in Knoxville

Located just behind the dashboard, your car evaporator is in charge of cooling air and removing moisture before it is blown into the cabin of your car or truck.

More: Repair Your Car's AC Evaporator

Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Replace Your Thermal Expansion Valve or Orifice Tube at B & M Automotive & Diesel Service

The Thermal Expansion Valve or Orifice Tube monitors the amount of pressure and temperature of your A/C system to calculate the precise amount of refrigerant that can safely go into the evaporator. Uneven pressure can allow unwanted moisture to accumulate in a car or truck's AC system.

More: Replace Your Car's AC Thermal Expansion Valve or Orifice Tube

Freon Recharging Questions and Answers

Q: How often should Freon be changed?
A: Never, at least not in the way you think of your oil being changed. Your car's AC system is a sealed unit. No new freon needs to be added unless there's a refrigerant leak. Over time as your vehicle ages small cracks may form in your AC system parts such as the compressor, condenser, evaporator, receiver-dryer, expansion tube and connecting hoses allowing freon to escape. If this occurs, you need to replace the failing part and have your freon recharged.

Q: How long should a Freon recharge last?
A: If your car's AC system was recently repaired and required a freon recharge it should not need to be replaced again. Your AC system is a closed or sealed system that does not allow freon to escape. Freon is not like gasoline; it does not get depleted. If freon is escaping after your car's AC system has been repaired, then additional work may need to be done to find the leak.

reviewicon10/10 service!
AC Repair
06/20/2023

Pricing was extremely reasonable and everyone was so nice and knowledgeable! I had the A/C compressor in my 2014 Fiat 500L and it's working great!




what our customers say

I flip cars here and there and I take all mine to these guys at B & M. They are very thorough yet cost efficient. I'm very pleased with our relationship!
S
, 08/22/2023

I really appreciate these guys! After moving from out of state and having a solid mechanic you have trusted for over 14 years, it's like having to find a new doctor too! I am so thankful I found these guys! They have been so helpful and honest every single time! When I first moved here, I worked for UPS using my vehicle out of Oliver Springs. Let's just say that was not good. I've had issues ever since. Going up and down mountains was hard on my vehicle, and unfortunately, my light came on. I knew it was the transmission. I took it in, and they went thru it and told me they would check out everything they could and get back to me. Sadly, it was my transmission. They were super kind, and we decided it would be better to just get another vehicle, and they agreed. I really appreciate their honesty and hard work! Like I told them when I left...I will be back with the new vehicle because I know I found my mechanics for life here in Tennessee!
A
, 07/24/2023

Professional quality service. No hidden costs or surprises when it came time to settle up. Will definitely take my vehicles to them again for my repair needs.
G
, 07/11/2023

Pricing was extremely reasonable and everyone was so nice and knowledgeable! I had the A/C compressor in my 2014 Fiat 500L and it's working great!
T
, 06/20/2023

Very friendly and great work. I will return when I need more automotive work.
L
, 04/30/2023

Thank you B&M Automotive! They are Honest, Experienced, and affordable! The first place that I took it to said that I needed another motor and boy were they wrong. I'm glad that I found B&M and they were quick to let me know that I did not need another motor. They knew exactly what it was and had it fixed in no time. I highly recommend them!
A
, 04/05/2023

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