Lower Emissions: Maintains a precise air-to-gas mixture to keep CO levels within safe operational parameters

Common Questions What are the signs of a failing 100171987 gas valve

ensuring compliance with local energy codes

System Reliability: Protects internal components by reducing the time a motor stays in high-amp startup mode

Can I use this in place of a standard pleated filter

Lennox 27M18 Orifice 321142-301 Lower Emissions: Maintains a preciseThe Lennox 27M18 Orifice is a precision engineered 052 sized flow control component essential for maintaining the manifold pressure and combustion efficiency of Lennox commercial and residential heating systems. Designed as a direct OEM replacement part, this orifice (MPN: 27M18, replaces LB 99225) ensures accurate gas metering for Lennox T Class rooftop units and gas furnaces, specifically compatible with models including KGA036S4, KGA092, and LGH180