Smith and Lochinvar appliances

the assembly likely has carbon buildup or a compromised orifice and should be replaced

replacing a damaged plate will restore quiet operation

3" WC pressure switch ensures that the inducer motor is creating sufficient draft before allowing the ignition sequence to proceed

Common Questions What are the signs that my 152A regulator needs a rebuild

Trane BRK2978 Plate R-407A Smith and Lochinvar appliancesThe Trane BRK2978 is a heavy duty, top mount HVAC motor mounting plate engineered for precise alignment and vibration damping in industrial and residential air handlers. Measuring exactly 11. 7" x 7. 8", this OEM Trane replacement part is fabricated from high gauge galvanized steel with a corrosion resistant zinc finish, ensuring a stable foundation for condenser or blower motors. As a standard furnace motor bracket in many TSC and YHC series package