this Utica Dunkirk replacement part maintains the operational integrity and safety parameters required for efficient hydronic loops

it ensures stable delivery for water heaters

ensuring an airtight seal at the observation port is non-negotiable for system performance and meeting localized code requirements for indoor air quality

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

Designed for high-cycle reliability in demanding HVAC environments

Lennox 49L90 Pressure Switch this Utica Dunkirk replacement partEnsure 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