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For high-altitude applications
ensuring a consistent BTUh input per burner by maintaining a fixed diameter of
heat-damaged housing
As a veteran HVACR technician
York S1-029-25456-000 Burner Orifice For high-altitude applicationsThe York S1 029 25456 000 Burner Orifice is a precision engineered component designed for high efficiency gas furnace manifolds. This #43 burner orifice features a . 089 inch diameter aperture, specifically calibrated to ensure exact BTU input ratings and optimal combustion performance across compatible York, Coleman, and Luxaire heating systems. As a direct replacement for S1 029 20423 043, this 2 groove (2Grv) model maintains the critical gas flow
