Working Hours
  • Mon 8:00AM - 5:30PM
    Tue 8:00AM - 5:30PM
  • Wed 8:00AM - 5:30PM
    Thu 8:00AM - 5:30PM
  • Fri 8:00AM - 5:30PM
    Sat Appointment Only
  • Sun Closed
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419-782-7827 | 1735 Spruce St Defiance, OH 43512

AC Air Conditioning Auto Parts

Northwest Automotive LLC: Your Truck or Car's AC System

At Northwest Automotive LLC 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

If your AC system starts blowing warm air come by the store at 1735 Spruce St 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 419-782-7827 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 419-782-7827 today and let our auto parts specialists help you find the right expansion value, orifice tube, and evaporator to fit your car or truck.

NAPA Service Assistant


What Our Customers Are Saying

Took my car in after my rear seal blew out in the engine. Had water pump, thermostate, and new timing chain and related parts also replaced. I hace a 2016 Terrain with a 2.4L engine. My car after a week of having it back is running better than ever. Great job. I would recomend this shop for your auto repairs.

, 03 March 2025

Very happy with the service!!! They came and picked my truck up, repaired my tire, and brought my truck back to me within time frame they stated. Today my tire went low, they worked on my truck immediately. Would recommend them to anyone, they are very friendly and accommodating. 5 star rating from me!!!!

, 16 December 2021

Awesome shop!! Not only was the estimate the lowest I received, the entire exhaust system was replaced (headers on back), the work was completed in under 2 hours. I m a U.S.Army Veteran and my car had a misfire situation going on due to bad coil pack, well Tim & his guys found me a coil pack and put it on NO CHARGE!! I would recommend this shop to any & everyone!

, 13 October 2021

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Tim and the guys do great work here and are honest I definitely recommend these guys for any repairs

, 28 September 2021
I have a 2011 Jeep Liberty, the A/C stopped working, so I called up Tim and told him. He said can you bring it in today at 1:00pm? I said yes. So I took it in, they found that all the Freon was out of the unit. So they put more Freon in plus added some dye to find if the system may have a leak. So I paid the bill. Tim said, if you have any further problems bring it back. So the next day I started my Jeep up. The A/C stop working. So I called them back on Saturday. Can you bring it back on Monday at 2:00pm? I replied yes. Returned back to Northwest Automotive. They took my jeep in and recharged the A/C unit, and checked the system for any possible leaks. So Tim filled me in on no signs of dye so go ahead drive it and if any further problems bring it back. So how much money do I owe you? He replied nothing. The next day I drove my Jeep the A/C stop working again. So I called them back and told them. Can you drop it off so we can get to work on it Monday morning. I said yes. So I called them up Monday around noon and asked how are things going with my jeep? He replied that we believe we have found the leak. So he asked you said when it would set over night that the next day it not work? I replied yes. He asked if you don't need your Jeep back today, we will let it set overnight and check and see if it is still working in the morning. So I replied yes. I called them back the next day and asked how are things going with my jeep? Tim replied it is working fine. He asked if I would pick it up later today, l said that is fine because I will not be in town till around 3:30pm. Because I was at work. So went to pick up my Jeep. Tim said I believe the problem was from the low pressure valve. It should be alright. I replied so how much do I owe you. He said nothing, if you have any further problems bring it back. I believe he is a fair and honest person. I will respect that and I will bring him some more business. Thanks again.

, 16 July 2021

Northwest Automotive didn't charge me to look over my Geo Traker, even though I didn't end up having anything done to it. Will be going back to them.

, 26 April 2021
  • AERA (Automotive Engine Rebuilders Association)
  • ASE Certified - Automotive Service Excellence
  • BBB Accredited Business
  • NAPA AutoCare Center
  • Jasper Engines & Transmissions
  • Mobile Air Conditioning Society
  • WIX Filters
  • ALL-DATA
  • IDENTIFIX
  • UNOH Alumni - University of Northwestern Ohio
  • Defiance Ohio Police
  • Car Care Aware
  • Call Us For Service: 419-782-7827