Vent Microwave Into Attic

International mechanical code imc 2009.

Vent microwave into 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. 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 agree with jonas. I would like to use that path to vent a new microwave.

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. This article describes the venting options for built in microwave ovens and microwave oven vent systems typically installed above a stovetop or range. She said the vent was in the attic and again she was right. Microwaves cannot be ducted into a common duct work.

If round ducting also note the following. Chapter 5 section 505 1 exception 1. 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. I want to vent to the outside.

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. The ventilation system may lead to an exterior vent or it may simply recirculate air back into the kitchen. 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.

Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. The old microwave did not. First we do not have all the facts. Mstankiewicz marc stankiewicz july 10 2011 12 06am 8.

A rectangular to round transition adapter must be used. We discuss the importance of venting to the exterior choice of vent components and materials and we refer to microwave oven manufacturers installation instructions. 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. No other questions need be asked answered to determine that it is improper to vent the range hood into the attic.

Microwave oven vent installation suggestions. The duct must be the sizes listed above for proper draw of air. First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic.