Power Efficiency: Advanced brushless DC motor technology minimizes transformer sizing requirements (3 VA)

Designed as a critical OEM replacement part

Automatic Reset: Self-correcting design restores system power without requiring a manual service call

remote bulb control operates within a precise range of -20°F to 50°F

cracked ceramic due to thermal shock

Lennox 59W21 TXV Freon Power Efficiency: Advanced brushless DCThe Lennox 59W21 Thermal Expansion Valve (TXV) is a critical 8 ton metering device engineered for precision refrigerant control in high capacity commercial HVAC systems. Designed with 3 8" x 1 2" ODF sweat connections, this valve ensures accurate superheat maintenance across varying load conditions, preventing liquid floodback and protecting the compressor. The 59W21 features a 30 inch capillary tube and is officially rated as the direct replacement