Laars Heating Systems R2004100 Pressure Switch 321042-401 specifically replacing part numbers 97M94
Baker’s notes & crumb story
Description
Laars Heating Systems R2004100 Pressure Switch 321042 401 specifically replacing part numbers 97M94 specifically replacing part numbers 97M94 and 15M64 Replacing a failing inducer pressure switch with this factory specified unit restores the original pressure sensing accuracy