excessively hot? Either your vent through your house is partially clogged, or the cycling thermostat (also known as the thermistor) isn't cycling the heat properly and needs to be replaced. Runa cycle without the vent connected and if you still have issues, replace the cycling thermostat. Please Don't Forget the deposit you placed to ask the question is not used to compensate me until you rate my service! Please Remember that when you are asked to give a rating, you are rating My Service and not this website itself or the problem of your appliance.