Depending on the situation, you may not need to tear out the entire bath exhaust fan in your home - most of the time you just need to replace the motor. For safety reasons, we recommend hiring a home service pro to get the job done.
Mark checked on the electrical wiring relating to the furnaces to insure that the furnaces are functioning efficiently with respect to one another.
Minor adjustments were made and both furnaces are functioning properly.
Kale suggested that the wiring should be examined by...