is your home on a slab or do you have a sub floor where you can get under the home?
you shouldn't have to start taking the outside of the house apart at this point. It sounds like you may have a small amount of ice just in the one area leading to the toilet
Hello,
I am working on a day& night furnace. I have replaced the old transformer with a new universal one. I get 125 volts to my lead wire and I have have 24 volts going to my limit switch. now ever I have no voltage going to my thermostat Can anyone tell me what the issue could be?