Whether you are performing a preventative maintenance swap or a critical field repair

Swapping to this 3/16 inch gas regulator orifice allows for specific BTU capacity adjustments

If you see visible carbon buildup or hear "chattering" during the ignition cycle

the 272708A and 272708A/U are the same technical part

Mid-Point Grounding: Increases safety and reduces electromagnetic interference within the burner control circuit

Trane BLW1139 Inducer Blower Els PW 17895 Whether you are performing aThe Trane BLW1139 Inducer Blower is a critical single stage draft inducer engineered for high efficiency furnace combustion systems. As the direct OEM replacement for BLW0861, this motor assembly ensures proper venting of flue gases by creating a steady vacuum within the heat exchanger. This Trane centrifugal blower is designed to meet strict furnace draft inducer specifications, maintaining the pressure switch closure required for the ignition