Designed to fit standard 48-cubic inch take-apart filter drier shells

including D

this HVAC timer relay effectively prevents power surges and reduces the risk of expensive motor failure

This hydronic zone valve repair kit includes critical components such as the quad ring

Williams P322055 Vent Safety Switch Designed to fit standard 48-cubicFor contractors servicing Williams Monterey Counterflow Top Vent Furnaces, the Williams P322055 Vent Safety Switch is the code compliant OEM replacement required to maintain the integral safety loop. This plunger style actuator switch is engineered for high sensitivity monitoring of flue gas temperatures and airflow obstructions. Designed for specific 35,000 BTU Monterey models, including units 3509821 and 3509822, it functions as a critical vent