972-625-8324 | 1917 Miller Rd Suite 107, Melissa, 75454
Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Maktech Fleet Solutions
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 Maktech Fleet Solutions, 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:
Lauren R., 12/15/2020
I bought a school bus a year ago and brought it in to begin my personal routine maintenance, as I am converting it to a tiny home. We fixed a numerous amount of things (all of which were legit: oil change, filters, etc). And they informed me that it would be a good idea to do a coolant flush too, considering the coolant that was in it from the school district was for gasoline engines. I told them after I removed the back heater, I would. No need to buy extra coolant after all. I took it back the other day to get the coolant flush and slowly but surely I am replacing old, worn out parts. Every time I have come in, my experience has been nothing but top notch. They take their time, they explain what parts work with what and why they are important, and they teach me about my bus so I can give it the absolute best care. I stumbled upon this shop and I am so thankful I did. This is a mechanic you can trust.