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Best Auto Repair, Knoxville

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Recharge The AC Freon In Your Car Or Truck

 85 Verified Review(s)

Your truck or car's AC system is almost completely airtight, but your freon refrigerant is always slowly leaking out. Eventually, a car will lose enough freon so that its air conditioning system will no longer cool effectively. At B & M Automotive & Diesel Service at 7301 Maynardville Pike we are ready to recharge your AC to help you keep your car or truck's cabin temperature cool.

"Help My AC Only Blows Warm Air!"

New advancements in R134a freon systems means that freon in newer cars doesn't leak out as much as old R12 freon systems. The average new model economy car only leaks about 0.41 ounces of refrigerant per year. Come to B & M Automotive & Diesel Service in Knoxville when it's time to recharge your AC freon.

B & M Automotive & Diesel Service's Fast 3 Step Process:
  • Vacuum out all the old refrigerant before refilling it.
  • Add new R134a refrigerant.
  • Pressurize your car's AC system and test for mico-leaks.
"Does B & M Automotive & Diesel Service Have R12 Freon For My Classic Car?"

Unfortunately R12 freon is no longer available. If your car or truck was made before 1994 you must convert your entire AC system to the new R134a standard. This involves replacing dozens of seals and several AC auto parts. R134a is a more highly pressurized and much more efficient refrigerant pound for pound than R12. Most classic car AC compressors and condensers cannot withstand the intense pressure required and choose to add about 25% less freon to accommodate older systems. This means your AC may not cool as well as it used to. Converting your R12 system to R134a is a big job so stop by B & M Automotive & Diesel Service today and talk with our mechanics about getting the job done right. Visit us today at 7301 Maynardville Pike.

"Is Used Freon Ok?"

Many auto repair shops resell used AC refrigerant. The old freon is cleaned using a specialized recovery machine that removes contaminants. Used freon provided by B & M Automotive & Diesel Service works just as well as new freon after it's cleaned. Accepting used freon is a great way to help minimize the impact freon has on the environment.

Freon gas becomes a liquid when pressurized inside your car's A/C system but returns to its gaseous state as it leaks out. Many drivers in Knoxville are completely unaware that they are losing freon until the day when they turn on the car's AC and find only warm air blows out. Call 865-922-7111 and ask any of our auto repair specialists about recharging your car's AC. Stop by our store at 7301 Maynardville Pike and we will show you the best AC recharging options for your car.

More AC Repair Services:

AC Repair

AC Compressor Repair

Car and Truck AC Condenser Repair


what our customers say

Stopped in to get help with an 01 Dodge we are rehabbing, the guys are very nice and very helpful! Took care of my abs brake sensors that were melted in!
H
, 08/18/2022

Just wanted to give a shout out to Bob at B & M. Very professional and did great work on my suspension repair.
D
, 08/17/2022

I had an amazing experience here at B & M! Both my mom and I had been having problems with our Toyota Priuses, this is the closest shop that works with hybrids but unfortunately we live about an hour and 15 minutes away. Boy am I glad that we drove this whole way! We arrived there as they opened and told them about the cars problems and stayed to chat for a while. Marty, the main mechanic mentioned how they had been operating with just two employees and the manager because everyone else had quit. Because of that they were unsure how soon they could get to my car. I wasn't super happy about that but I understood that it was out of their control. Because I was trying to leave shortly for the start of school, I really didn't have much time to waste, but again, they couldn't do much about it. My mom and I had about a days worth of errands to run around Knoxville so we told Marty that we would be around for that day in case they miraculously finished with the car. About an hour or two before they closed we got a call about the car. Unfortunately, my car was totaled, but because they were so fast with their diagnosis I still have plenty of time to figure out what to do as far as school goes. I would highly recommend coming here for your auto repairs. They were very considerate to my need for quickness even through their rough times, they were all very personable and I really enjoyed standing there listening to them talk, and so if ever I come back after college, they have gained themselves a customer for life. Thank you so very much Marty, Bob, and Gary.
B
, 08/05/2022

I had them do some repairs on a somewhat Frankenstein VW trike I just acquired. They did a FANTASTIC job figuring out what I had and then getting it road ready. A special thanks to Diego. Dude, you are my go-to guy for anything I need on this trike. Awesome people and awesome service.
T
, 07/27/2022

These guys are great. Repair was quick and price was well below the estimate.
j
, 06/14/2022

Great
D
, 05/22/2022

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