Working Hours
  • Mon 8:00AM - 5:00PM
    Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
    Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
    Sat Closed
  • Sun Closed
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410-437-4870 | 7944 Fort Smallwood Rd, Baltimore, 21226

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

Moore Performance

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 Moore Performance, 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

reviewiconAWESOME Customer Service
Car & Truck Care, near Baltimore, Maryland

First time going to Moore Performance and it was an AWESOME experience. Ken put my mind at ease and him and his mechanics solved the problem. I will definitely go back for future work!

, 03/27/2020

reviewiconKnowledgeable & Friendly
Car & Truck Care, near Baltimore

I've been going to Moore's for year. They are wonderful to work with, professional, friendly, fair and most important they do GREAT work. I've had body work , transmission repairs, breaks and reg oil changes to name a few. Always exceptional service! I've referred many friends and family to them and all were exceptionally pleased. Customer for Life for sure

, 01/17/2020

reviewicon

Christian owned. Ken can take care of all your car care needs. From the simple oil change all the way up to a full engine swap out.

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Great people! They do good work.

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Great Christian-owned business! Most accomodating to your needs, fair honest prices and a true Mom & Pop Shop... technically, Father & Son. Great folks, can do anything with autos :) Luv y'all

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Great service, quaility mechanics. They fix your car right the first time at a fair price.

  • ASE (Automotive Service Excellence)
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  • Call Us For Service: 410-437-4870