Vent hoods that don't have to be vented outside? do they exist?
ejbrymom
14 years ago
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chris45ny
14 years agoRelated Discussions
Do flies enter through your vent hood vent?
Comments (17)Many years ago our cats would stare at the fireplace in February. Then a big fat fly would crawl out and they would play with him. My wife sniffed by the fireplace and announced something was dead behind it. I unzipped the vinyl siding to the chase the next day, cut the sheathing with my Sawzall, and using a bent coat hanger, pulled the bones and fur of several dead squirrels from between the metal chimney layers. There were bug carcasses all over in there and it stunk to high heaven. They would fall between and could not climb back up the slick metal. I spread Fabreeze around, buttoned up the chase and siding, and put a mesh cap on the chimney and didn't have a problem again until the guy in the condo next door invited us over and Ms. Sniffer stood by the fireplace......See MoreIn the weeds: Vent hood, make-up air, and venting outside - help!
Comments (19)building2017 wrote: ... - What are the silencers I have read about and how do they work/would they work here? These are like giant truck mufflers, except designed for various diameter ducts. They have low pressure loss (forget the value but it is a lot less than baffles). Fantech is the source. - Any benefit re:sound to using two smaller liners instead of one big one and only using one at a time when using only one side of stove? Or is this magnifying the cost for no good reason other than sound? (Because I'm assuming I'd then have two runs up and out and two things on the roof because they wouldn't combine to avoid a turn and to ensure proper function? If only one side were run at a time, then MUA costs could be lower, but where code requires MUA, I am willing to bet a donut that the AHJ will demand an MUA system that can handle both at once. In theory, the sound reduction will be only 3 dB less. Also, when using the central burners, you will still need both systems for capture and containment. Well, I guess three things on the roof then with the MUA. While commercial systems mostly use roof MUA entry, and I use roof MUA entry, the options for residences are wide open and may include side of house entry, or entry into a basement that has an air path access to the kitchen....See Moreis 12' too long for hood duct/vent through ceiling to outside?
Comments (3)Please review the hood threads on this forum for more information on this topic than you might presently think that you want to know, and then ask specific questions. No likely residential length is too long if the blower and ducting are correctly sized for the conditions. All of the important parameters are described many times over....See MoreUnconventional ways to vent range hood--tap into other existing vents?
Comments (7)Normally, the street sewer to which one's DWV plumbing is connected has a clear air path from under the street to the residence roof via the house DWV. Through this path, and the many others in the development, toxic and/or odoriferous gasses pass. The gasses are kept from the household air by water traps at the points of use. To have any chance that the gasses would not get into the kitchen hood and thence the kitchen when the hood system blower is off, a set of well sealed and powered dampers interconnected with the hood blower would be needed. I doubt even that would pass modern building codes, but it could function. Other houses' DWV would potentially be part of your venting system....See Morewritersblock (9b/10a)
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