Venting A Microwave Into The Attic

Ideally the range hood should be vented to the outside usually through the roof.

Venting a microwave into the attic. Chapter 5 section 505 1 exception 1. If round ducting also note the following. 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 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. She said the vent was in the attic and again she was right. Microwaves cannot be ducted into a common duct work. Mstankiewicz marc stankiewicz july 10 2011 12 06am 8.

No other questions need be asked answered to determine that it is improper to vent the range hood into the 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. First we do not have all the facts. International mechanical code imc 2009.

Do not vent into an attic or crawl space. This article describes the venting options for built in microwave ovens and microwave oven vent systems typically installed above a stovetop or range. The old microwave did not. Microwave oven vent installation suggestions.

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 is definitely not a good idea to vent a range hood into the attic. I want to vent to the outside. The ventilation system may lead to an exterior vent or it may simply recirculate air back into the kitchen.

Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. 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 rectangular to round transition adapter must be used. I would like to use that path to vent a new microwave.

First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic.