HVAC Systems · Air Conditioning Components
Thermostatic Expansion Valve (TXV)
A metering device that regulates refrigerant flow into the evaporator coil based on superheat, keeping the coil efficiently fed across varying load conditions.
Common uses
Metering refrigerant into the evaporator, maintaining target superheat
Common symptoms
- Poor cooling
- Iced evaporator coil
- Inconsistent superheat
Common repairs
- TXV replacement
- Sensing bulb reattachment
- Refrigerant charge check
Related terms
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