Lochinvar & A.O. Smith 100227399 Pressure Switch 320720-756 Standard industry practice dictates replacing
Yard notes & kiln story
Description
Lochinvar & A.O. Smith 100227399 Pressure Switch 320720 756 Standard industry practice dictates replacing Standard industry practice dictates replacing the internal oil filter during any major HVAC system diagnostic or when oil analysis indicates high acid or metal counts provided the body casting remains in good condition