Trust this genuine OEM Lennox part to restore factory-spec cooling performance to your commercial or residential cooling systems without the balance issues common in universal aftermarket alternatives

or diagnostic LED codes indicating a "switch stuck open" error

look at the end of the motor shaft

making it ideal for exhaust fan proving and suction line monitoring

Using a non-OEM switch with a different set point can lead to unsafe operating conditions or frequent system lockouts

Amana-Goodman TX3N2 TXV 30067439-890 Trust this genuine OEM LennoxThe Amana Goodman TX3N2 is a professional grade non bleed thermostatic expansion valve (TXV) kit engineered for 2. 5 to 3 ton residential and light commercial HVAC systems. This OEM replacement part is specifically calibrated for R22 service, providing precise refrigerant metering to the evaporator coil. Unlike fixed orifice systems, the TX3N2 TXV utilizes a power assembly and sensing bulb to maintain optimal superheat, protecting the compressor from