while a higher rating may cause excessive static pressure and duct noise

fitting STAS and Catch-All shells

HVAC Zoning Compatibility: Optimized for MasterZone control systems and MDP3 panels

but avoid abrasive materials like steel wool or sandpaper

York 011-00549-000 Oil Freon while a higher rating mayThe York 011 00549 000 is an OEM grade 5 Gallon POE Type H Oil specifically engineered for high performance lubrication in York centrifugal chillers and single stage compressors. This Polyol Ester (POE) lubricant is formulated for systems utilizing R 134a, R 513A, and R 1234ze refrigerants, providing the critical miscibility required for effective oil return in large scale HVACR applications. As a Type H oil, it features a higher ISO viscosity