The Armstrong Furnace R37400D080 Draft Inducer Assembly is a vital OEM replacement part engineered to maintain high-efficiency airflow within your residential heating system

By ensuring a cleaner

making it a staple for commercial and industrial plumbing applications

the MAC1E energizes the fan and verifies the pressure switch circuit before allowing the burner to fire

and auto modes for HVAC system efficiency

Liebert 301537P1S Bearing Assembly 328140-751 The Armstrong Furnace R37400D080 DraftThe Liebert 301537P1S Bearing Assembly is a high performance 1 inch Concentric BOA Bearing engineered for critical thermal management systems, including Liebert Mini Mate2 units and AC refrigeration setups. Designed for veteran contractors who prioritize precision, the concentric BOA system ensures superior 1 inch shaft alignment and optimal load distribution across the bearing surface. This specific OEM design significantly minimizes friction and