a genuine OEM HVAC control switch engineered for precise negative pressure monitoring in high-efficiency furnaces and air handlers

Code Compliance: Facilitates indoor regulator venting requirements by eliminating the need for expensive and labor-intensive vent piping to the building exterior

The hardwired 24V unit includes intuitive On and Cancel buttons

providing reliable starting torque and high volumetric efficiency

this regulator provides excellent control from full flow down to pilot stages

Lochinvar & A.O. Smith 100304988 Gasket 321042-401 a genuine OEM HVAC controlEnsure a high integrity seal for your precision combustion equipment with the Lochinvar & A. O. Smith 100304988 Gasket. Specifically designed as a flame sensor gasket, this OEM replacement part maintains the airtight boundary necessary for accurate flame rectification and consistent signal transmission to the control board. For any service technician or mechanical contractor, replacing the gasket during annual maintenance or whenever the sensor is