How-To Videos

How to Vent an Over-the-Range Microwave to the Outside

By: Danny Lipford
Venting an over-the-range microwave

Venting an over-the-range microwave

Many times an over-the-range microwave that recirculates cooking fumes can be converted to exhaust to the outside. Here’s how to go about it:

  1. Remove the access plate on the top of the unit in order to reach the motor. Remove the motor mounting screws on the back of the oven.
  2. Take out the motor and rotate it 90 degrees, so that the fan motor now blows upward.
  3. Attach the transition piece to connect the oven to ductwork
  4. Modify the cabinet over the stove to allow the duct to pass through by cutting holes on the top and bottom.
  5. Use a laser measuring tool to mark a dot on the ceiling that will identify the center of the hole that needs to be cut for the ductwork.
  6. Join the sections of ductwork and seal the joints with metallic tape to secure them.
  7. In the attic mark a spot directly above the duct so you can cut a hole in the roof decking and extend the vent pipe up through that opening.
  8. On the roof tuck the flange of a roof vent under the shingles above the opening and secure it with roofing tacks and roofing sealant.
  9. To hide the exposed duct in the kitchen, build a frame around it and cover it with cabinet grade plywood. Cover the exposed edges of the plywood with corner trim.
  10. Apply a coat of primer and two coats of the wall paint.

Watch the video for details.

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