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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 L&D Auto Specialists, 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.

Contact Us Today!

Got questions? We've got answers! Drop us a line, give us a call, or even stop by. Our team is eager to help you with any auto repair needs you have. Let's get you back on the road safely and swiftly!

What Our Customers Are Saying

My vehicle was having some mysterious interior water leaking issues when it would rain. I took it in and worked with Jose, Angel, and Hector, each of them are incredibly knowledgeable and professional. They diagnosed the problem pretty quickly, explained everything to me clearly, and handled the repair in a really reasonable time frame. You can tell they know what they're doing and take pride in their work. Finding a shop that's both skilled and honest hasn't been easy for me personally, but these guys for sure exceeded my expectations of quality work! Recommend!

Olathe, KS

, 06/02/2025

Top tier service! Always takes great care of us!

Olathe, KS

, 05/06/2025

I've been bringing my cars to this shop for over 10 years, and I can honestly say they've always done an exceptional job. I fully trust Angel, the head mechanic he's knowledgeable, honest, and truly takes pride in his work. Whether it's a routine service or a more complex repair, I always feel confident leaving my vehicles in his hands. Jose, who works in the office, is also great,he's always there, professional, helpful, and makes the whole process smooth and easy. It's rare to find a shop that's consistent, trustworthy, and genuinely cares about their customers. Highly recommended.

Olathe, KS

, 04/29/2025

Jose and his team helped me make some modifications to my 2022 Dodge Challenger and his team did a great job with everything I needed at a fair price.

Olathe, KS

, 04/29/2025

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