This 3-inch furnace limit switch is built for high-cycle reliability and serves as a direct replacement for various Source1 HVAC parts used across York

Engineered to withstand high-cycle operations

this kit simplifies the teardown and reassembly of the heat exchanger block by providing high-temperature retort cement and specialized square-cut seals that withstand rigorous thermal cycling

Featuring a 4-inch probe length and a stainless steel flange mount

eliminating field modification during installation

Raypak 005086B Controller Freon This 3-inch furnace limit switchThe Raypak 005086B Controller is a high performance IID Versa PC board engineered for precise ignition control and temperature management in atmospheric heaters. As a veteran grade Raypak replacement part, this digital control board features an integrated ignition module designed for Raypak Versa IID model pool and spa heaters. It supports 3 wire temperature sensors and micro processor based logic to maintain tight setpoint tolerances, preventing