leak-resistant connection to the evaporator coil

for both PSC and ECMx blower motors

and motor loads up to 1/3 HP

Replacement is necessary if the boiler fails to ignite

Consult the high-altitude derate tables in the furnace service manual to confirm if a #33 size meets the required BTU compensation for your specific elevation

Lennox 11W97 Service Valve R-410A leak-resistant connection to the evaporatorThe Lennox 11W97 Service Valve is a critical liquid line service valve designed for precision refrigerant management in residential and light commercial HVAC units. Engineered as a genuine Lennox OEM replacement part, this bar stock service valve features a front and back seating design, allowing technicians to isolate the system charge or access the refrigerant service port without total recovery of the system. This 3 8 inch valve ensures smooth flow