Lennox 99K40 TXV R-410A every unit is statically balanced

every unit is statically balanced to the closest tolerances

ensuring a secure fit on standard motor shafts

Why is my old drain pan cracking or overflowing

ensuring exact fitment within the burner bracket

This 4PST electromechanical timer operates on a 120V 60Hz input

Lennox 99K40 TXV R-410A every unit is statically balancedThe Lennox 99K40 is a high performance HVAC thermal expansion valve engineered for precision refrigerant metering in large capacity 8 ton air conditioning systems and heat pump equipment. Featuring a 3 8" x 7 8" ODF (Outside Diameter Fitting) connection and a 30 inch capillary tube, this OEM component is designed to replace aging or failing valves in Lennox split systems, ensuring the evaporator receives the exact refrigerant charge needed to maintain