This 1 1/2" NPT gas valve features a rugged aluminum body and resilient NBR seals

The filtration component effectively captures particles down to 0

This is the main combined controller (motherboard)

this 5/8" bore hub features a dual-design that accommodates both hex and round shaft mounting

Lennox 14A44 Pressure Switch 326058-757 This 1 1/2" NPT gasThe Lennox 14A44 Pressure Switch is a critical safety component designed specifically for two stage high efficiency gas furnaces. Operating as a dual stage pressure switch, it is factory calibrated to trip points of 0. 60" WC and 0. 35" WC, ensuring precise monitoring of the combustion air inducer blower. This HVAC draft inducer switch validates correct venting pressure before allowing the ignition sequence to proceed, protecting the system from