Venting Microwave Through Attic

I would like to use that path to vent a new microwave.

Venting microwave through attic.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Also the plumbing vents should also go through the roof. How to install vent ducting for a microwave over the stove. The make roof vents that accept the vent lines from the microwave.

You would need to know what your local codes call for to use an existing chimney. The duct must be the sizes listed above for proper draw of air. The top vented microwave example given assumes that the vent runs straight up through the roof see the roof cap in the sketch above. How to vent a bath fan through the roof this old house duration.

Both smaller and larger vents than recommended decrease venting performance. Whirlpool microwave vent hood installation model wmh73521cs duration. If your over the range microwave oven is equipped with an interior recirculating vent the built in charcoal filter loses efficiency. 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.

The vent should be vented outside not into the attic. 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. 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. A rectangular to round transition adapter must be used.

Microwaves cannot be ducted into a common duct work. Do not vent into an attic or crawl space. If you have any other inquiries about our master flow products please call technical services at 800 211 9612. This product is intended to vent an appliance through a asphalt shingle roof.

Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. If round ducting also note the following.