Enhanced System Performance: The secure integrated latch mechanism prevents air leaks

whereas the standard model utilizes a 2-inch probe

Safety Compliance: Built to meet original Williams Comfort Products engineering specs

000 BTU Forsaire models

this model features side attachment rails designed to accept MARS 780 and Furnas auxiliary switches for additional control circuit requirements

Lennox 21L87 TXV 320788-704 Enhanced System Performance: The secureMaintain precise system balance with the Lennox 21L87 TXV, a genuine OEM thermostatic expansion valve designed specifically for Lennox air conditioning and heat pump units. This valve is engineered to modulate refrigerant flow dynamically based on the cooling load, ensuring the evaporator operates at peak efficiency. By maintaining the optimal superheat at the evaporator outlet, the 21L87 prevents liquid slugging and protects the compressor from