Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
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 Keith's Automotive 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.
More AC Repair Services:
I called Keith's Automotive after my brakes started scraping a month after having them done somewhere else. After being told my caliper was bad and a $700+ quote I called Keith's and Adam was very helpful. After they looked at it Adam let me know it seized because my break line was swollen. He was able to transfer my brake warranty for the pads and rotors and along with a caliper and hose it was still well under $400. I'm thankful for their honesty, thorougness, and professionalism. If I let the other place change my caliper I would've been back in a couple days because they didn't tell me about the brake line being swollen and who knows how much money.
My vehicle broke down on a long road trip in some random place along I-70. I looked for a mechanic with good review to tow my vehicle to it, and I was lucky enough to find Keith's Automotive Center. They went the extra mile and lent a helping hand when I was literally stranded in their small town. They got my car into a service bay on a same-day basis and got back to me with preliminary diagnosis before close of business. They continued to troubleshoot the next morning and gave me solutions with quotes that were accurate. They worked over the next week to keep me informed as to progress, and in every way they went above and beyond to make sure that I was taken care of, even helping me get squared away while I was in town and trying to figure out how to get home while I awaited repairs. They delivered their work faster than they had quoted and faster than I'd have expected. Then because I had to come back from out of town, Adam met me outside of normal hours to return the vehicle to me. These guys are trustworthy and pros.