The 180-degree swivel head design allows for unobstructed viewing of the 5

this board maintains combustion stability and optimizes system reliability for residential heating applications

Technicians find that replacing the combined unit is the most effective way to eliminate communication errors and internal electrical failures

25-inch LCD panel provides sharp alphanumeric readouts for diagnostic accuracy

this motor features a shaded pole design with ball bearings for extended service life compared to sleeve-bearing alternatives

Lochinvar & A.O. Smith 100166408 Pump THPU32HP7Y The 180-degree swivel head designThe Lochinvar & A. O. Smith 100166408 Pump is a critical OEM replacement circulator engineered for high performance hydronic systems. This E22. 2B series pump, identical to the PUM30003, features a 2 5 HP motor and a durable bronze pump body, making it ideal for potable water heating and condensing water heater applications where corrosion resistance is non negotiable. Designed specifically for Lochinvar Armor AW 501 601 and WA series models, it