Working Hours
  • Mon 7:00AM - 4:30PM
    Tue 7:00AM - 4:30PM
  • Wed 7:00AM - 4:30PM
    Thu 7:00AM - 4:30PM
  • Fri 7:00AM - 4:30PM
    Sat Closed
  • Sun Closed
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724-349-6996 | 97 Sexton Rd, Indiana, 15701

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

Hammill's Automotive

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 Hammill's Automotive, 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 Are Saying

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Top notch service. Very efficient and friendly. Explains everything.

, 07/26/2021

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Fast, friendly, reasonably priced repair. Replaced my engine... Fast! It was great

, 07/19/2021

reviewiconElectrical Services, near Indiana, PA

I have been going to Hammill's for 20+ years. Eric and his mechanics are top notch! They diagnose the problem quickly and fix it efficiently. I tend to drive my cars until the wheels fall off. The folks at Hammill's keep me on the road. They let me know when it is time to put it to pasture. I have recommended them many times to friends and family.

, 06/24/2021

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I've used this auto shop for years. Great prices and truthfulness. Eric is always great to deal with...and the rotweiler too!

, 09/11/2020

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The absolute best place to have work done!

, 09/01/2020

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Very helpful

, 01/24/2020

  • Jasper
  • IDENTIFIX
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  • AAA Approved Auto Repair
  • Interstate Batteries
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  • Call Us For Service: 724-349-6996