and use a 7/64" Allen wrench to secure the internal assembly while tightening the external hex brass nut

preventing dangerous overheating and premature component failure in forced-air applications

Use a calibrated manometer to verify the switch closes at the specific inches of water column required by the OEM equipment specifications

What are the symptoms of a failing P291-4554RS

Professional Grade Durability: Built by Fasco (Mfr #70581178) to withstand high-temperature flue environments without premature bearing failure

Fasco A090 Motor 326010-701 and use a 7/64" AllenThe Fasco A090 Motor is a precision engineered 1 50 HP draft inducer motor designed for high static pressure applications in residential and light commercial furnaces. Operating at 115V and yielding 3000 RPM, this 3. 3 inch diameter shaded pole motor is a critical component for maintaining proper flue gas exhaustion. As an OEM direct replacement draft inducer, the A090 is specifically tailored for compatibility with Rheem, ICP, and Universal