Reason for the call was to install customer supplied exhaust fan. While doing my assessment, I saw that there was no venting to the exhaust fan. The customer showed me the other exhaust fan that should be replaced as well and that one did not have exhaust exiting the home either. Customer opted to move forward with replacing both fans with roof penetration for both. While examining the panel, I observed that there were four multi wire branch circuits that were not on two pole breakers. Please see solution to get this resolved for you as well. Install (2) exhaust fans with roof venting Replace breakers for multi wire branch circuits