Designed for high-cycle reliability in demanding HVAC environments

using it with higher-pressure refrigerants like R-410A will result in incorrect trip points and potential system damage

Substantial Build Quality: Plated steel construction resists corrosion and mechanical fatigue in demanding HVACR environments

it is a versatile OEM replacement part for any PENN pressure-actuated control setup

Lennox 49L90 Pressure Switch Designed for high-cycle reliability inEnsure reliable combustion safety and system performance with the Lennox 49L90 Pressure Switch. This genuine OEM component, which is a direct replacement for Lennox 49L9001 and Honeywell IS20100 3072, is engineered specifically for Lennox furnace pressure switch applications requiring a precise . 47" WC (water column) trip point. Featuring a 1 4" barb connection for secure pneumatic hosing and a single pole single throw (SPST) configuration, this