best way to vent
We will be installing a microwave range hood in our kitchen. I want to vent it outside. It comes with two options. I can punch a hole on the top or on the back of the mwrange hood and duct it out of the house. It is up against an exterior wall so that makes it a lot easier. If I go straight out the back of the microwave range hood I will just have a 12 inch duct and that is it.
I have been told by an older and maybe wiser family member that if I go straight out the back I will have problems in winter with the cold air coming into the kitchen and making it cold. He is saying that the flaps on the vent covers and in the microwave range hood do not seal perfetly and then cause the cold to come back in. So what is the best way to deal with these issues.
We live in souther Ontario, Canada.