Reznor 205443 Pressure Switch Els PW 17895 Common Questions Is the Lennox

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Reznor 205443 Pressure Switch Els PW 17895 Common Questions Is the LennoxThe Reznor 205443 Pressure Switch is a critical safety and operational component designed for precise 0. 75" wc (water column) monitoring in high efficiency heating systems. As a Single Pole Single Throw (SPST) switch, it provides a reliable normally open circuit that closes upon reaching the specified set point to prove draft and authorize the ignition sequence. This OEM Reznor replacement part features dual 1 4" barb connections, ensuring a secure