Do you have to replace the expansion valve?
You will notice when the A/C expansion valve goes bad because your air conditioning system will ultimately stop functioning properly. It will either produce less cool air or it won’t produce any cool air at all. At this point, you will need to replace your A/C expansion valve to fix the problem.
How much does it cost to replace an air conditioner expansion valve?
Not only can this problem cause your home to get too cold, but the compressor will wear out faster and eventually break down sooner than expected. It can cost up to $1,800 to replace an A/C compressor, whereas replacing the expansion valve only costs up to $440.
Where is the expansion valve on an AC unit?
The AC expansion valve is found within the air conditioning system of a vehicle. The purpose of the valve is to manage how much refrigerant liquid can flow throughout this system. Whenever there is an abundance of refrigerant, the core of the evaporator will get too cold and eventually freeze.
Why does an expansion valve need to be replaced?
The purpose of the valve is to manage how much refrigerant liquid can flow throughout this system. Whenever there is an abundance of refrigerant, the core of the evaporator will get too cold and eventually freeze. Just like if there was not enough refrigerant, the core would get too hot and then overheat.
When does an air conditioner expansion valve stop working?
Anytime the heat resistance is greater in the surrounding environment, the air conditioner will need even more refrigerant to create a cool temperature in the cabin. When you have an expansion valve that stops working properly, the symptoms will show up quickly. These symptoms will mostly pertain to the functionality of the air conditioning system.
When does an expansion valve need to be replaced?
Unless the compressor failed internally, sending debris/burnt oil throughout the AC system, the expansion valve doesn’t require replacement.
How does the expansion valve in an air conditioner work?
This part also depressurizes the refrigerant until it becomes cold enough to cool down the warm air passing through. As you can see, the expansion valve plays a critical role in reducing the temperature in your home to a comfortable level, and the whole system can go haywire if just this one part malfunctions.
Do you have to replace the valve on an evaporator?
That is, if you go to all the trouble and expense of replacing the evaporator and then later the valve fails, you’re looking at another new substantial repair job. Technically, though, if there is nothing presently wrong with the valve, then technically no you do NOT have to replace the valve.
How much does a Lexus evaporator valve cost?
As far as the economics of this repair, here is the basic data: The genuine OEM Lexus Evaporator Core (part number 88501-48311) vends for about $250 at on-line Lexus parts dealers, plus tax and shipping. The OEM Lexus Expansion Valve (part number 88515-33020) is about $75.