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Best Auto Repair, DeForest

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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 Parks 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.


Partners

ACDelco
ASE (Automotive Service Excellence)
Car Care Aware

What our clients are saying about us

We have established longterm and stable partnerships with various clients thanks to our excellence in solving their automotive needs!

I've been going to Parks for years and even after moving I still choose to drive a little further to continue having them service my vehicle. They are efficient, knowledgeable, and they provide guidance when I want it. Highly recommend. quotes-image
reviewiconHighly Recommend
Car & Truck Care, near DeForest, WI
We arrived to the shop with two hours til closing for an oil change and brake inspection - Friday, Labor Day weekend. They found both front tire bearings were dangerously loose (we suspected something was wrong from noise). They quickly made a call to get the parts delivered and had us out in two hours. And we're professional and friendly. 10/10 recommend this shop!!quotes-image
reviewicon10 out of 10
Brakes, near DeForest, WI