National Comfort Products 14265025 Door Switch R-448A and a Series-4 specific O-ring

and a Series-4 specific O-ring for a leak-free seal

Ensures reliable operation of Bard wall-mounted HVAC control panels

specifically across several TSC036

60" WC pressure to the barb and check for continuity across the terminals

National Comfort Products 14265025 Door Switch R-448A and a Series-4 specific O-ringThe National Comfort Products 14265025 Door Switch is a critical safety and operational component designed specifically for thru the wall condensing units and heating systems. As a veteran grade HVAC replacement part, this switch provides precise door position sensing, functioning as a high reliability interlock that prevents system operation when the access panel is removed. This OEM door switch ensures that high voltage blower components and burners