Product description

The Broan S97018853 Pressure Switch Kit is a critical control component designed for use with automatic make-up air dampers. As modern homes become increasingly airtight for energy efficiency, powerful kitchen exhaust fans can create significant negative pressure inside the building, which can lead to backdrafting of combustion appliances. This pressure switch kit solves that problem by sensing the pressure differential created when the exhaust fan is turned on. Once a specific pressure threshold is met, the switch triggers the make-up air damper to open, allowing fresh outdoor air to enter the home and equalize the pressure. The kit includes the pressure switch itself, a sensing probe, and the necessary tubing to connect them. It is engineered for precision and reliability, with a set point typically around 0.05" w.c. (water column). Installing this kit is an essential step in ensuring your home's ventilation system is balanced, safe, and code-compliant, particularly when installing high-CFM range hoods or whole-house ventilation systems. It is a rugged and sensitive device built to provide years of automatic, maintenance-free operation.

Product highlights

• Automatic Pressure Sensing: Detects negative pressure changes and automatically activates make-up air systems to maintain balance.
• Enhanced Home Safety: Prevents the backdrafting of hazardous gases from fireplaces, furnaces, and water heaters.
• Code Compliance: Helps meet building code requirements for make-up air when high-capacity exhaust fans are installed.
• Complete Kit: Includes the pressure switch, 12 inches of PVC tubing, and an air probe for a comprehensive installation.
• Reliable Operation: Precision-calibrated switch ensures the damper opens only when necessary, saving on heating and cooling costs.

Specs

• Manufacturer: Broan
• Manufacturer Part Number: S97018853
• Activation Point: 0.05" w.c.
• Kit Includes: Switch, Tubing, Probe
• Compatibility: Universal Make-Up Air Dampers (MD6T, MD8T, MD10T)

Direct replacement models

Direct replacement for Broan part number S97018853. Used in conjunction with MD-series make-up air dampers.

You will receive the same product or an OEM-Equivalent that meets the highest standard of the OEM with warranty that will be a direct-fit. Manufactured with rigorous industry standards and certified in the USA with superior quality to the OEM.