Venting Microwave Through Attic

A rectangular to round transition adapter must be used.

Venting microwave through attic.

The top vented microwave example given assumes that the vent runs straight up through the roof see the roof cap in the sketch above. The old microwave did not. Do not vent into an attic or crawl space. Vent your bath and kitchen exhaust fans through the roof through a special roof hood.

This product is intended to vent an appliance through a asphalt shingle roof. But an alternative worth considering if it does not make the vent run too long is to vent across the attic floor and down and out through a soffit or out through a gable end wall. Also the plumbing vents should also go through the roof. The vent should be vented outside not into the attic.

Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Whirlpool microwave vent hood installation model wmh73521cs duration. I would like to use that path to vent a new microwave. It appears when this house was built provision was made for venting out the rear of the microwave into the standard 2 4 wall up the cavity inside the wall then up through duct work in the attic through the roof.

If you have any other inquiries about our master flow products please call technical services at 800 211 9612. You would need to know what your local codes call for to use an existing chimney. How to vent a bath fan through the roof this old house duration. The make roof vents that accept the vent lines from the microwave.

If round ducting also note the following. If your over the range microwave oven is equipped with an interior recirculating vent the built in charcoal filter loses efficiency. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. An externally vented microwave mounted over a cooktop uses a fan to draw air through the microwave s vents and into an exhaust duct leading to the exterior of the building so most of the moisture heat odor and particulate matter generated by cooking goes directly outside.

The duct must be the sizes listed above for proper draw of air. Both smaller and larger vents than recommended decrease venting performance.