Txv Air Conditioning Valve

Since the minimum efficiency regulation changed to 13 seer in january 2006 most oem systems now incorporate a thermostatic expansion valve txv style metering device as the standard for air conditioning systems.

Txv air conditioning valve. A thermal expansion valve or thermostatic expansion valve often abbreviated as tev txv or tx valve is a component in refrigeration and air conditioning systems that controls the amount of refrigerant released into the evaporator and is intended to regulate the superheat of the vapor leaving the evaporator. An expansion valve also called a tvx valve regulates the flow of refrigerant inside of a cooling system. Whenever there is an abundance of refrigerant the core of the evaporator will get too cold and eventually freeze. If your air conditioner isn t cooling your house or car properly it may be low on refrigerant or it may have a faulty expansion.

The symptoms of a system with a restricted thermostatic expansion valve txv are very similar to those of a system with a refrigerant undercharge. Service technicians often confuse an undercharged system with a restricted metering device. Back to home three signs your air conditioner s expansion valve is going bad posted on 20 august 2018. Sticking or jammed air conditioner thermostatic expansion valve how to fix an a c or heat pump tev that s not.

The liquid injection depends on the refrigerant superheat at the evaporator outlet where the bulb must be placed. It uses a sensing bulb or disc that opens or closes the diaphragm to allow the refrigerant to pass through. There are many components to an air conditioning system including the compressor condenser evaporator and thermal expansion valve or txv. In 2014 compressor companies began adding a rust inhibitor additive.

This additive separates from the compressor oil and begins to clog the txv valves. While the compressor or the condenser it typically the source of the problem sometimes the issue is a failing expansion valve. Air conditioning systems are often located in homes and vehicles. However the undercharged system will have low condenser subcooling levels.

It is now extremely important for the hvac technician to understand the design and operation of this type of valve. Sticking or jammed thermostatic expansion valves. The a c expansion valve is found within the air conditioning system of a vehicle. In addition to debris dirt or icing problems that occur in tevs or thermostatic expansion valves sometimes the thermostatic expansion valve on brand new air conditioners may need an extra jolt to get it working as we explain here.

Your dealer may have told you trane changed the txv design but that s not true. A thermal expansion valve causes the air conditioner to operate more efficiently. I did a lot of research on this while i was preparing to replace my ac last year. The purpose of the valve is to manage how much refrigerant liquid can flow throughout this system.