Ensure the blower pulley alignment is checked with a laser or straight-edge tool

Consistent fin spacing ensures uniform air distribution across evaporator or condenser coils

The Rheem-Ruud 42-101225-81 Pressure Switch is a critical safety component designed for precise furnace draft monitoring and combustion blower verification

Simplified Installation: Features a 19-inch lead length and pre-stripped ends or plug-in connectors to reduce time on the job site

It utilizes a clockwise (CW) rotation and is configured with a 1/2-inch bore specifically located on the intake side for a secure fit on standard motor shafts

McDonnell & Miller RB-122E Control 30067439-890 Ensure the blower pulley alignmentThe McDonnell & Miller RB 122E (Part Number 144676) is a heavy duty conductance type low water cut off designed specifically for residential and light commercial hot water boilers. As a veteran preferred electronic LWCO, it features a 120VAC power requirement and a 3 4" NPT connection, making it high performance protection against dry firing. This unit includes a patented self cleaning probe that reduces scale build upa common failure point in