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Old 11-16-2015, 09:49 AM   #1
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Range hood venting options?

During our kitchen remodel we have installed a range hood over our oven. We had bought the kit to make it ductless and planned to have it recirculate but we really did not want to cut a hole in our new cabinets. Our problem is that the kitchen is on the first floor of a two story house and the range is on an interior wall. The best way I could see to vent it out of the house would be to go into the wall down into the crawl space and out to an exterior wall that way. This would however two 90 degree bends, one to go down the wall and another to go out of the crawl space, as well as about 30 feet of duct. Our fan is a basic fan with 180-390 cfm depending on the setting. I don't think it is strong enough for a duct run like I described, but what kind of problems would that lead to if we did try it, and are there any other options that I may not be thinking of to prevent us from cutting a hole in the front of the new cabinets? Thanks


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Old 11-16-2015, 06:35 PM   #2
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Range hood venting options?

Just moisture and grease in the downward elbows. Have a good filter on the hood and it should catch it.

Insulate it inside the crawl.


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Old 11-16-2015, 09:38 PM   #3
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Range hood venting options?

Do your cabinets go all the way to the ceiling?

If they don't, possibly you could run duct over-top of the cabinets, to the nearest exterior wall. Box the duct in, put some molding around it.
It would still need to go through the cabinet above the range, but a 10" tall cabinet is pretty useless anyways. If that really bothered you, you could go out the back of the hood, up a 3 x 10" duct in the wall, back out over the cabinet, and then to the exterior wall.

Just throwing out a couple of ideas.
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Old 11-17-2015, 07:41 AM   #4
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Range hood venting options?

Not sure, but if you can find high cfm vent that installs outside, you can overcome the obstacles and no noise. Fantech has a good website with the requirements table. Even with the older cheap models, most of the grease would be on the fan, not much in the duct.
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