Best Auto Repair, Needham

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Call us for all your car needs! 781-559-0721

AC Air Conditioning Auto Parts

Catalano Automotive Repair: Your Truck or Car's AC System

At Catalano Automotive Repair we understand how your AC system works. Your car or truck's AC system uses a Freon gas type refrigerant for cooling. For automotive applications, Freon is refined into tetrafluoroethane, a non-toxic, non-flammable and non-corrosive gas called R134a. The ability of the refrigerant gas to change its physical properties into a liquid as it is compressed and condensed keeps you cool on hot summer days.

Discover More Reliable AC Parts

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If your AC system starts blowing warm air come by the store at 41 Kearney Rd and talk with one of our auto parts specialists to determine what parts you need to get your AC working again.

Your AC compressor is the auto part responsible for compressing the refrigerant R134a. When it is compressed it becomes very hot. Because hot is the opposite of what drivers want in an AC system, the refrigerant must be cooled.

R134a is cooled by your car AC condenser. This auto part is a series of coils that look very similar to a radiator. Just like a radiator, outside air passes over the condenser to remove the heat from the compressed gas. It is then condensed into a very wet cold liquid. The receiver-drier absorbs excess moisture from the liquid. Next, your AC filter traps debris within the liquid that can cause clogging in your car's AC system. Call 781-559-0721 today and let our auto parts specialists help you find the right compressor, condenser or receiver drier to fit your car or truck.

At this point, the refrigerant liquid is still under too much pressure. The expansion valve and orifice tube take over and force the refrigerant to change from a high-pressure liquid refrigerant into a low-pressure liquid refrigerant mist before it enters the evaporator.

As the low-pressure liquid refrigerant mist flows through the evaporator, a blower motor pushes air across the cold tubes of the evaporator and cooled dry air flows into the passenger compartment of the automobile. The accumulator is a holding tank for the refrigerant as it exits the evaporator. While the refrigerant is circulating inside, the accumulator removes any moisture that may be present.

Call 781-559-0721 today and let our auto parts specialists help you find the right expansion value, orifice tube, and evaporator to fit your car or truck.

ASSOCIATIONS

  • ASE Master Technician
  • Car Care Aware

Testimonials

  • I was told by a dealer that there was no way to repair a run flat tire, and that all four tires needed to be replaced (for a 4x car). I was afraid that I was in for the cost of four wheels. Then I came to Catalono, and Shae (I am not sure how to spell his name) was able to fix the tire. Even he was very busy, he took the car and it was ready in less than 10 minutes. No wonder these guys earned my trust over the years that I have been coming there, and I have always been impressed by their work quality.
    , 07/12/2021

  • reviewiconVery Informative and Quick
    I could not have been more pleased with my interaction with Catalano Auto. The owner took it upon himself to list a few different tire options for me after I let him know what I was looking for. The work was done quickly and they even vacuumed the inside of my car without being asked, very cool! I will most certainly be going back there for any other needs that come up.
    , 01/21/2021

  • reviewiconBrake Repair
    Brakes, near Newton, MA
    I was very impressed by all the positive online comments for John and his Catalano Automotive Repair. I thus brought my Toyota to him about a year ago with some concern with the brakes. He did a quick check and said all looked fine - no need to do any replacement. A couple weeks ago, I brought the car to him again for maintenance and others. The whole process was efficient and John was very professional. He even offered the service to drop the car as I couldn't go there to pick it up before the New Year holiday. Definitely will be back again and recommend to others.
    , 01/08/2021

  • reviewicon
    John and his staff are always amazing! We've brought our cars here a few times and every time it's worked out very well. I had an issue once and the larger National chains were telling me I needed several things done and it was going to cost quite a bit. John checked the car out and said I didn't need half the work that they quoted. Honest, knowledgeable, fairly priced and is willing to explain the problem in a way you will understand if you don't happen to be proficient yourself in auto mechanics. No one wants their car in need of a repair but if you do, this is the place to come!


  • reviewicon
    Been a happy customer for years! John is honest, does an excellent job, and is the only reason my 20 year old car lasted as long as it did. I can't recommend him highly enough!


  • reviewicon
    John is a great mechanic. Needed new brakes on my Lexus he did them for considerably less than I was quoted from the Lexus dealership.