Reznor 201158 Pressure Switch -1.10 WC for IS220 Heater

The Reznor 201158 is a replacement pressure switch designed for use with Reznor IS220 series heaters. This safety component monitors the air pressure differential in the combustion chamber to ensure proper venting and safe operation of your heating unit.

Key Features:

• Pressure switch rated at -1.10 inches water column (WC)
• Genuine OEM Reznor replacement part
• Designed specifically for IS220 series unit heaters
• Critical safety component that prevents operation with inadequate venting
• Direct replacement for worn or failed pressure switches

This pressure switch is an essential safety device that monitors the pressure differential created by the draft inducer motor. If proper venting pressure is not achieved, the switch prevents the heater from firing, protecting against potentially dangerous combustion conditions. Regular replacement of this component ensures reliable and safe heater operation.