unlike manual reset switches which require a physical intervention

and the necessary center mounting screw for a complete installation

It is built to withstand the rigorous thermal cycling and high-pressure environments typical of Lochinvar Power-Fin (PBN) and Knight series units

Common Questions What was the original part number for this cartridge

This OEM York replacement part utilizes 3/8-inch ODF sweat connections for a leak-proof installation

Lennox 59W84 Pully Assembly L99H008 unlike manual reset switches whichThe Lennox 59W84 Pulley Assembly is a critical OEM replacement part designed for high performance belt drive systems in commercial HVAC units. This tensioner pulley assembly with bracket ensures precise belt alignment and constant tension, preventing slippage and premature wear on the blower motor and drive belt. Engineered for durability, the 59W84 features a heavy duty bearing integrated into the pulley to withstand high RPM operations and thermal