Ran this heater for a year and it has worked great. Has anyone had a problem with the foil wrapped insulation above the heat exchanger. Near the exit of the heat exchanger it looks as if the foil has melted away exposing the fiberglass insulation. The area is roughly 4"x4" in size. Kind of strange to see it at the exit since this is normally the coolest portion of the tube. I don't think it's a big deal but if enough dust builds up in this area it could pose a fire hazard.
Thanks!
Thanks!