Recent content by Bd19

Thank you, it’s a Beckett 21805. I listened with a screwdriver, but hard to tell the origination point. Will need to keep trying things.

Hi I have a Well McLain oil boiler (maybe 15 years old, serviced annually) that functions correctly, but a loud humming can be heard through the whole house that won’t start until maybe 20 or seconds after the burner fires up and will continue for another minute or two after the burner stops...