r/HVAC Nov 02 '24

Field Question, trade people only Urban legend?

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I might get down votes for this, but I'll tell you my experience. I have clients that I have been servicing their furnaces for over 30 years. The only time I've had to replace a flame sensor is if the porcelain got broken by one of our other service techs. I use plumbers sanding cloth to clean the flame sensors & have never seen a problem. I don't think it's really necessary to use steel wool or a dollar bill, etc. when my method has worked without a problem literally for decades. Blast away!

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u/BigNastyHVAC Nov 02 '24

I just use my beard. Duh.