Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.
Included for free with this service
Mechanic comes to you
12-month / 12k-mile warranty
Free 50 point safety inspection
Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.
On average, the cost for a Audi A8 Expansion Valve (Orifice Tube) Replacement is $292 with $121 for parts and $171 for labor. Prices may vary depending on your location.
The air conditioning system in your vehicle depends on the refrigerant that circulates in the A/C system. In particular, the evaporator core inside the passenger compartment requires a specific, metered amount of refrigerant in order to efficiently cool the interior. The expansion valve, also known as an orifice tube in some designs, regulates the pressure of refrigerant that enters the evaporator. The tube is also where liquid refrigerant under pressure converts to a gaseous form. The gaseous refrigerant absorbs heat from air passing through the evaporator core and carries it to the condenser where the heat is removed.
In a situation where the orifice tube is either blocked or stuck open, the air conditioning will not cool properly. Too much refrigerant will cause frost on the core and prevent air from passing through to cool the air temperature. Too little refrigerant passing through the evaporator means not enough heat is absorbed and the interior is insufficiently cooled. In either situation, you may need to replace the expansion valve/orifice tube.
Whenever air conditioning repairs or refrigerant recharges are performed, have the expansion valve inspected for proper operation. If the expansion valve is not opening or closing properly, you may need one of our expert technicians to replace the expansion valve or orifice tube.
Air conditioning is a comfort item in a vehicle, not a safety issue. However, the air conditioning also removes moisture in the air for the defrost setting to clear your windows. If the air conditioning is not working properly, your vision may be impaired in humid or very cold weather.
Fast and easy service at your home or office
Backed by 12-month, 12.000-mile guarantee
Real customer reviews from Audi owners like you.