the 100233421 is the official manufacturer-designated replacement for the obsolete Lochinvar DRH2935 5" damper

The Maxitrol M611-1 Valve is a high-precision 1" NPT modulating gas valve engineered specifically for direct fired burners operating in negative pressure (pull-through) environments

this kit is the professional choice for maintaining factory-spec performance and airflow integrity in 208/230V single-phase applications

Common Questions: What are the signs that a burner assembly needs replacement

York S1-404180 Filter Drier 318518-761 the 100233421 is the officialThe York S1 404180 Filter Drier is a high capacity bi flow filter drier engineered specifically for heat pump systems using R 410A refrigerant and POE oils. As a direct OEM replacement for 043330, this HPC 163 HH model features a solid core desiccant blend optimized for maximum moisture removal and acid neutralization. Its bi flow design utilizes internal check valves to ensure debrissuch as copper oxides and fluxare trapped regardless of the