Venting A Microwave Into The Attic

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

Venting a microwave into the attic.

No other questions need be asked answered to determine that it is improper to vent the range hood into the attic. First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic. She said the vent was in the attic and again she was right. 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.

Chapter 5 section 505 1 exception 1. Ideally the range hood should be vented to the outside usually through the roof. The old microwave did not. 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.

I agree with jonas. A rectangular to round transition adapter must be used. I would like to use that path to vent a new microwave. Mstankiewicz marc stankiewicz july 10 2011 12 06am 8.

Both smaller and larger vents than recommended decrease venting performance. 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. If round ducting also note the following. Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood.

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. It is definitely not a good idea to vent a range hood into the attic. International mechanical code imc 2009. I want to vent to the outside.

Microwave oven vent installation suggestions. The duct must be the sizes listed above for proper draw of air. First we do not have all the facts. 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.

Microwaves cannot be ducted into a common duct work.