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AC Air Conditioning Auto Parts

High-Tech Auto and Truck Center: Your Truck or Car's AC System

At High-Tech Auto and Truck Center 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 4007 Westfax Dr
Suite D 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 703-968-6648 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 703-968-6648 today and let our auto parts specialists help you find the right expansion value, orifice tube, and evaporator to fit your car or truck.

Contact Us Today!

Got questions? We've got answers! Drop us a line, give us a call, or even stop by. Our team is eager to help you with any auto repair needs you have. Let's get you back on the road safely and swiftly!

What Our Customers Are Saying

Great job particularly dealing with long distance! Thank you!

Chantilly, VA

, 07/01/2026

I highly recommend High-Tech for auto and truck repairs. The technicians are skilled and thorough, testing the repairs they make before they release the vehicle back to me. The customer service staff, Zack, Darwin and Taylor, are professional, knowledgeable, and friendly. In this go-round, after the replacement part was installed, I drive away and almost immediately found white smoke rising from the engine. That alarming issue abated at the end of the day. I attribute that to fluid residue on the engine that finally burned off. But for a while it was really exciting

Chantilly, VA

, 06/28/2026

The staff are incredibly nice. I can't speak to price since that area is incredibly expensive overall and I am not from there, but they do good work and are all so polite.

Chantilly, VA

, 06/19/2026

Great service. Been taking cars to them for over a decade, rarely if ever have any issues with their work. Highly recommend.

Chantilly, VA

, 06/07/2026

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