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Best Auto Repair, St. Petersburg

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

 77 Verified Review(s)

Your car or truck's AC system is under extreme pressure and the thermal expansion valve or orifice tube monitors the amount of pressure and the temperature of your A/C system. It calculates the precise amount of refrigerant that can safely go into the evaporator. A failing expansion valve or orifice tube often causes a vehicle's air conditioner to blow hot air.

Replace or Repair

  • Expansion Valves: Too much refrigerant causes your evaporator to get too cold whereas too little refrigerant would result in inadequate cooling. The expansion valve is a complex valve that regulates refrigerant flow. This process of metering the refrigerant adjusts the flow according to the temperature of the refrigerant in the evaporator coil. Talk to one of the pro mechanics at Affordable Auto and Truck Repair, as this part can be replaced on its own and does not require the entire replacement of the AC assembly.
  • Orifice Tubes: Unlike the expansion valve, the orifice tube is a simple fixed device with no moving parts. It therefore cannot vary the flow of refrigerant into the evaporator, but rather causes a permanent restriction in the system. However, like the expansion valve the orifice tube regulates refrigerant flow through the system and filters debris which may come through in its screen. Often fixing a "bad orifice tube" requires replacing the entire evaporator assembly.

More AC Repair Services:

Truck and Car AC Repair Services

Freon Recharging Services For Your Car Or Truck

AC Evaporator Services


what our customers say

Great service,good prices
G
, 05/31/2023

Very pleased with the work we had done on our Toyota Tundra. Fair pricing and excellent communication. Thank you!!
S
, 05/05/2023

Great customer service and extremely helpful. I personally am a new car owner and received a lot of valuable information from an honest employee and an honest business. Everything was handled professionally and I would recommend.
C
, 04/26/2023

Last week I found out the hard way that my go-to mechanic retired and closed up his shop. I tried calling around different people I know for shop recommendations, but no one was answering the phone . I hopped on Yelp and Affordable Auto & Truck Repair this morning and stopped in shortly thereafter. Mike was super helpful and was able to text me the things I needed done to my car because I was in and out of meetings all day and didn't know when I would be able to be on the phone. Once we agreed on the work that I was going to get done, he promptly turned it around and I picked up my car before they closed up today. One point to know is that I already had a part purchased from the store so I definitely think that helped with timing. I had my power steering pump and serpentine belt on my 2006 Ford Focus replaced for $256. I'm definitely going to make this my new auto repair shop of record. Hopefully I don't need much more work done, but you never know what comes up!
H
, 04/18/2023

First time customer. I was treated like a long time customer. Which will make me a permanent customer. Honest, Fair, and Reliable. I will recommend them to all my family and friends.... Thanks!
P
, 04/10/2023

Great service and reasonable pricing.
S
, 03/15/2023

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