ensure your main air supply is regulated correctly to trigger the internal logic between heating and cooling modes

scale and mineral deposits can insulate the probe

maintaining the furnace high limit switch integrity required by modern safety standards

specifically for regulating boiler water temperature

Technicians can easily manage the 30 to 50 degree F setpoint range via a convenient screwdriver slot range adjuster

Trane BLW1138 1 Stage Inducer Draft Blower Els PW 17895 ensure your main air supplyAs a seasoned tech, you know that a failing inducer is often the culprit behind pressure switch faults and ignition lockout. This Trane BLW1138 1 Stage Inducer Draft Blower is the direct OEM solution for maintaining precise negative pressure in your furnace's heat exchanger. Engineered as a high performance replacement for the BLW0863, this assembly features a 115V single phase motor running at approximately 3200 RPM. It utilizes a durable 3. 3 inch