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Professional Grade: CSA certified and built with OEM-approved materials to ensure reliable flame detection
or a compromised heat exchanger—all of which lead to heat backing out of the burner box
The Trane CNT3670 is an essential OEM high limit switch designed for American Standard and Trane gas furnaces
reducing the need to open high-voltage compartments during routine checks
Lennox 11J14 Pressure Switch 326058-758 Professional Grade: CSA certified andThe Lennox 11J14 Pressure Switch is a mission critical genuine OEM replacement part designed for high performance Lennox, Armstrong, and Ducane gas furnaces. This SPST (Single Pole Single Throw) air pressure switch is factory calibrated to a 0. 75" WC (Water Column) trip point, ensuring the inducer motor establishes a consistent draft and adequate venting before allowing the ignition sequence to proceed. As a direct replacement for the 103614 14