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 Zehner's Service Center, 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.
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I called a few days ago to set up an appointment for new tires/ alignment. I was told I could be there at 8:00 am and I would be done by 10:30. To make a long story short, no fault of Zehners, the new tires did not arrive on time and I was informed of that the day before. I was offered a better quality tire for the same price I planned on paying. At 10:30 I was told those tires never showed up. Needing to make a prior appointment at 11:00 am they offered me their company S10 to do my errands. I used that truck for 2.5 hours to get my taxes done, etc. I used to go to another place where I received a considerable discount but you just can't beat the expertise, quality, and honesty. You really can't put a price tag on what it means to have the peace of mind you will be treated fairly and honestly each and every time. They honor their work and back it with a guarantee. No where else I'll ever go to get my vehicle worked on! It didn't go as planned but you made it more than right! Thanks again!
I have worked for Goodyear Aerospace, Loral and Lockheed Martin the past 36 years and the one constant during those years has been Zehner's Service Center for all my vehicle repairs. Starting with Ron at the front desk through all the mechanics at the center the atmosphere is friendly and professional. A few of the best qualities are that they listen to you and are honest about the work required. Depending on the situation with each individual vehicle they will advise the customer on work is required as well additional concerns, with no pressure for agreed upon work. Mechanics look at each vehicle for safety of the customer and suggest options for repairs with first priorities and later concerns. Bottom line; I have never had reasons to look anywhere else for servicing my car/truck repairs than at Zehner's Service Center.