What is the difference between the P72 and P70 series

audible clicking during startup

What are the symptoms of a failing high pressure transducer

The balanced assembly ensures vibration-free operation

Will this blade resolve loud vibrating noises from my outdoor unit

Lochinvar & A.O. Smith 100326994 Switch R-407A What is the difference betweenThe Lochinvar & A. O. Smith 100326994 is a professional grade L290F manual reset thermal switch designed for critical high limit safety applications in commercial and residential water heaters. As a direct replacement for legacy part 100167474, this manual reset limit switch ensures the burner circuit is interrupted if internal temperatures exceed the 290 degree Fahrenheit threshold. This component is essential for preventing hazardous overheating