Vent Microwave Into Attic

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.

Vent microwave into attic.

A rectangular to round transition adapter must be used. Microwave oven vent installation suggestions. I would like to use that path to vent a new microwave. If round ducting also note the following.

This article describes the venting options for built in microwave ovens and microwave oven vent systems typically installed above a stovetop or range. 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. Microwaves cannot be ducted into a common duct work. This is a step by step series starting with planning and materials to final installa.

Both smaller and larger vents than recommended decrease venting performance. The ventilation system may lead to an exterior vent or it may simply recirculate air back into the kitchen. We discuss the importance of venting to the exterior choice of vent components and materials and we refer to microwave oven manufacturers installation instructions. Mstankiewicz marc stankiewicz july 10 2011 12 06am 8.

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. How to install a vent from a vent hood to the attic through a cabinet. Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. International mechanical code imc 2009.

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. First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic. Chapter 5 section 505 1 exception 1. I agree with jonas.

Do not vent into an attic or crawl space. The old microwave did not. First we do not have all the facts. 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.

I want to vent to the outside. 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. The duct must be the sizes listed above for proper draw of air.