York S1-029-21121-000 Inshot Burner Factory Calibrated: Set at -0

Factory Calibrated: Set at -0

Industrial Durability: Built by Zettler Controls (XMC0 series) to withstand the extreme temperature fluctuations found in outdoor condenser sections

this manual reset switch provides a definitive safety cutout that requires a physical inspection of the airflow—typically a clogged filter or failing blower motor—before the system can be re-engaged

model HMI-1TT3

York S1-029-21121-000 Inshot Burner Factory Calibrated: Set at -0Reliable gas to air mixing is critical for maintaining high AFUE ratings in newer high efficiency furnaces. The York S1 029 21121 000 Inshot Burner is a precision engineered OEM furnace replacement part designed to direct fuel through the orifice with a venturi effect that pulls in primary air for optimal combustion. Built for durability in high cycle environments, this single tube inshot burner minimizes byproducts like soot and carbon monoxide,