Common Questions & Technical Support

Industrial Durability: Built to withstand the high-cycle demands of modulation in commercial gas valve assemblies

Look for misshapen holes

Common Questions & Technical Support What is the maximum inlet pressure for the 1/4" orifice

always verify that the amperage load and voltage phase match the specific wiring diagram of the unit you are servicing to ensure proper switching under load

Armstrong Furnace R37373B001 Fan Blade 30067439-890 Common Questions & Technical SupportAs a veteran tech, you know that finding the exact spec for a condenser fan replacement is the difference between a smooth service call and a vibration induced callback. The Armstrong Furnace R37373B001 Fan Blade is a genuine OEM replacement part engineered for Lennox, Armstrong, and Ducane condensing units. This 20 inch HVAC condenser fan blade features a 25 degree pitch and a 4 blade configuration designed to maintain static pressure and peak