the Aprilaire 4280 should be installed within two feet of the water inlet solenoid valve

Replacing a faulty controller with the OEM 100167807 restores factory-spec performance

This blower harness bears an OEM construction

Manual Override: Features an integrated lever for manual switching without disrupting the programmed 7-day cycle

PACO Pump 99853453 O'Ring 323613-751 the Aprilaire 4280 should beFor veteran technicians servicing industrial cooling towers and hydronic circulation loops, the PACO Pump 99853453 O'Ring is the mission critical G4 model seal required for high performance maintenance. Measuring with a 7. 10" Inner Diameter (ID) and a 7. 25" Outer Diameter (OD), this heavy duty elastomeric pump seal is engineered to withstand the rigorous thermal and chemical demands typical of centrifugal pump applications. This part serves as the