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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
calibrated with a cut-out temperature of 175°F and a cut-in temperature of 135°F
Optimized Airflow: Engineered for 125 CFM delivery to maintain consistent temperature gradients across the heat exchanger
Common indicators include the ignitor glowing without a flame being established
and pivot hardware for extended shaft mounting
Durable Construction: Built to withstand commercial boiler environment demands for consistent performance
Lennox 33W18 Pressure Switch R-407A calibrated with a cut-out temperatureThe Lennox 33W18 is a critical two stage combustion air pressure switch designed for specific Lennox high efficiency furnace models. This differential pressure switch ensures secondary heat exchanger safety by monitoring the inducer motor's draft performance. With a dual setpoint configuration of 0. 20" WC 1. 32" WC, this switch accurately sequences the low fire and high fire combustion cycles. Proper calibration of the Lennox 33W18 pressure switch is
US$ 33.00
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