Venting Microwave Into Attic

Microwave oven vent installation suggestions.

Venting microwave into attic.

We discuss the importance of venting to the exterior choice of vent components and materials and we refer to microwave oven manufacturers installation instructions. Both smaller and larger vents than recommended decrease venting performance. Cut the hole in the ceiling duration. Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood.

From where i viewed did not see any inside openings on the vent plimbing although i did not climb over to the vent and look on the backside. 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. How to install a vent from a vent hood to the attic through a cabinet. Microwaves cannot be ducted into a common duct work.

First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic. If you re tempted to vent your exhaust fan through an existing roof vent or even vent it into the attic don t do it. The old microwave did not. Some recirculating vents contain a charcoal filter to eliminate odors and reduce heat but for the most part they are ineffective at ridding the kitchen of the hot moist air from the microwave.

A recirculating vent on the other hand simply sucks in the air from the microwave and recirculates it through a filter back into the kitchen. I want to vent to the outside. She said the vent was in the attic and again she was right. Do not vent into an attic or crawl space.

Anyway i went into the attic and saw a nice vent line going from over the microwave up to but not out of the roof. A microwave oven designed to be mounted over a cooktop is usually equipped with a ventilation system to cope with the cooking odors smoke and moisture that rise from the cooking surface. The duct must be the sizes listed above for proper draw of air. A rectangular to round transition adapter must be used.

If round ducting also note the following. Install a stove vent into the attic. I would like to use that path to vent a new microwave. The ventilation system may lead to an exterior vent or it may simply recirculate air back into the kitchen.