Home>Discussions>EXTERIORS>How to vent Grill Smoke
11 posts / 0 new
Last post
A. Spruce
Re: How to vent Grill Smoke

I think I would install something along the lines of a attic fan/gable vent or better would probably be a power vent (whirlybird).

Here's the thing, with the smoke rising and getting trapped in the roof structure, you've got to get an exhaust fan up there to remove it. A side venting gable vent would probably be the best/easiest, however the smoke is going to discolor the outside wall and eaves.

If you go with a power vent through the roof you won't have that problem. I believe that you can either purchase an eyebrow vent with a fan or you can get a whirlybird with a fan.

ed21
Re: How to vent Grill Smoke

I think gable fans might be the easiest solution. I would probably put a fan in each gable and maybe switch them separately so depending on the wind direction you might only need one turned on.

I also could see an upblast exhaust fan, the kind that are seen on restaurants as being a good solution. I only have seen them in commercial installations, so they may not be easy to get and be somewhat expensive. The fan could be located over the grill to take the smoke out more directly.

ordjen
Re: How to vent Grill Smoke

How about a conventional type kitchen range hood mounted relatively close to the grill, but not too close so as to avoid flame ups. Try to intercept the smoke before it goes all over the enclosure.

ed21
Re: How to vent Grill Smoke
ordjen wrote:

How about a conventional type kitchen range hood mounted relatively close to the grill, but not too close so as to avoid flame ups. Try to intercept the smoke before it goes all over the enclosure.

I was thinking the same thing too like a free standing island type of fan hood. Somebody probably makes one rated for an outdoor installation.
I like to grill all winter too, except mine is on an open deck. Snow, rain & wind puts a damper on it. The cold weather works in my favor though when grilling things like birds or roasts that take hours to cook.

A. Spruce
Re: How to vent Grill Smoke
ordjen wrote:

How about a conventional type kitchen range hood mounted relatively close to the grill, but not too close so as to avoid flame ups. Try to intercept the smoke before it goes all over the enclosure.

Personally, I doubt you can get enough air flow from the typical residential range hood to make much of a difference, unless it was directly over the exhaust of the grill, even then it would be over burdened. A bath fan would move more air, but I still think the OP needs something to clear the cathedral ceiling area.

ordjen
Re: How to vent Grill Smoke

You could be right Spruce. I haven't researched it that much. The cheaper units probably would not. They tend to be noisy too.

I have bought venting devices from this website before: www.ventingdirect.com

drewp
Re: How to vent Grill Smoke

THanks for the suggestions everyone. I too was thinking about constructing some type of a "hood" BUT for those of you that barbecue know...when you get flare-ups and open the grill..the smoke just pours out everywhere. It would take an exhaust fan with a lot of CFM to pull that smoke in the right direction. As several of you mention, I think the smoke wants to trap up in the ridge of the open structure. With the ceiling fans in the downdraft direction, I'm just swirling it around. THe idea I like best is a gable vent fan high up near the ridge AND with the ceiling fans in an updraft mode...perhaps this would push the smoke up AND out. BTW I only have one exposed gable end for the porch roof ties into my existing roof on a perpendicular.

drewp
Re: How to vent Grill Smoke

Not to keep a dead thread alive..but after more research, I think I'm going to try to find a commercial "type" hood to place over the barbecue. This seems like it will be the best option. I'm skeptical that a gable fan would be able to pull out of the smoke out in a "timely" manner. Now if I could only find a hood that doesn't set me back almost as much as the deck/porch itself!

A. Spruce
Re: How to vent Grill Smoke

I think you'll be surprised at just how much air an attic fan can push. They are rated at 1200cfm and up, that's a lot of air. Your 15x25 porch has roughly 4500 cubic feet, which means that a 1200cfm fan can change the air in about 4 minutes. That is 15 air changes per hour. Then there is the cost, between $60 and $100 depending on the cfm rating.

If you'd still prefer a hood, then you could save yourself some money and build one, using the attic fan for the exhaust.

Mastercarpentry
Re: How to vent Grill Smoke

I would get a purpose-built hanging hood for this and here's why: Cooking smoke contains grease which can collect and catch fire. Commercial kitchen venting systems must have allowances to handle that by code. Some just use a re-usable washable filter while others also have a drip catchment system, but all will have some method of preventing a flue fire. While speaking of code, many places do not allow a barbecue grill to be placed under a roof structure that is attached to a dwelling anymore. It is now code in my county, but not an adjacent county so as always check where you live first.

If you want to fab something yourself I'd at least build it around a grease filter made for this application and stay with the CFM range that filter was designed for. I'd also maintain clearances to combustibles required for a similar stovepipe just in case something did go wrong. Better a plate of barbecued ribs without a side of fried house!

Phil

TV Listings

Find TV listings for This Old House and Ask This Old House in your area.