Hello.....the heat comes through just fine, but a buzz has started as the furnace turns on. I have dusted the furnace....put in a new filter and still buzzes. Then during the heat process, the buzz sometimes turns to noises - squeak sounds. I am so puzzled by all this. I do have an electrician coming over on Monday and hopefully he is honest and I have made a list of the Payne furnace parts, so at least I may understand what in the world he is talking about. Help!!!! Thanks. I do bake great cookies but furnaces are beyond me.