Trane BLW1321 Draft Blower Freon or the ignition control module

or the ignition control module timing out despite the pilot being lit—often caused by a worn orifice or damaged burner head

including 7000

Direct compatibility: Corrects and replaces obsolete S1-55000-225 ionization heads

maintaining the condensing boiler’s high AFUE ratings without compromising the structural stability of the jacket or heat exchanger enclosure

Rugged Construction: Designed as an industrial air pressure switch to withstand the high-cycle demands of residential and light commercial furnaces

Trane BLW1321 Draft Blower Freon or the ignition control moduleThe Trane BLW1321 Draft Blower is a critical induced draft motor designed for precision venting in furnace and air handling systems. Operating at 115V with a 1 50HP output, this centrifugal blower manages the removal of combustion gases from the heat exchanger to ensure safe and efficient ignition cycles. As a direct replacement for BLW0572, this unit maintains the exact mounting footprint and electrical specifications required for quick field swaps,