Heater rumbles May 02, 2018, 01:37:25 pm I've noticed for a while now an intermittent low pitched rumble when the heater is running. It seems to be getting slightly louder.Is this normal?
Re: Heater rumbles Reply #1 – May 02, 2018, 06:24:33 pm Hi Ted. I would expect a worn out bearing in the fan motor, nearest to the fan. Oiling it now would extend the life for a bit, but by the time you hear it, it's already a 'gonner'. A lifetime oil impregnated sintered brass bearing. The lifetime is up when it quits. The bearings aren't replaceable, so you need to look for the complete motor to repair it. RonB 2 Likes
Re: Heater rumbles Reply #2 – May 04, 2018, 06:35:55 pm Quote from: RonB - May 02, 2018, 06:24:33 pmHi Ted. I would expect a worn out bearing in the fan motor, nearest to the fan. Oiling it now would extend the life for a bit, but by the time you hear it, it's already a 'gonner'. A lifetime oil impregnated sintered brass bearing. The lifetime is up when it quits. The bearings aren't replaceable, so you need to look for the complete motor to repair it. RonBThanks for that diagnosis.
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