Likewise if you want to keep costs down you may want to choose a microwave with recirculating venting to avoid having to pay someone to cut through the exterior wall.
Does an over the range microwave have to be vented outside.
In the first example the microwave over the range otr will vent through the manufacturer installed grease or carbon filter then directly through an exhaust port that is ducted to the outside of the structure.
If you have an over the range microwave it should have an exhaust fan that vents to the outdoors.
Many times an over the range microwave that recirculates cooking fumes can be converted to exhaust to the outside.
Remove the access plate on the top of the unit in order to reach the motor.
Microwaves over the range otr typically vent in two different ways.
After the smoke and steam are removed the filtered fan vents the air outside your home or cleans it before releasing it back into the kitchen.