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I'm getting this external exhaust fan in a few days. No noise with a backdraft no more freeze outs either. $280.00 for the biggest one 430CFM power.

You can count on my two cents... I will definatly take your invite and tell you all how it works after it gets installed; which will be before winter, and then I'll have the chance to see how it does.

I was told by my installer that he wants to do it Sat or Sunday after the Givings holiday, this week. Will keep u posted.

I am really dumb when it comes to those calculations however; when I told the phone rep I had a 9x10 ft room he said the large one would change the air about 20 times per hour. That is with a 420CMF rating.

If you have 8' ceilings, your room is 720 cubic feet. The fan is rated for 420 cubic feet per minute. Therefore it will exchange a little more then half the air in the room per minute. Hope you have everything tied down, lol.

nice, can't wait to hear the report

Got er' in and you were right, it will pull the door out from my hand on the other side of the room, and close it. And its really loud. I would recommend some serious distance if you use this in a media or conversion room. I started with a plain switch but I think I can use a speed control and run it a little slower at times, then sweep the room, probably literally, at full speed. Oh well, I moved into the back bedroom last night anyway and I plan to pick up a couch for this room. I just wish it turned out to be a little quieter than it is but I think it's wishful thinking for anything with good suction power. Also ran into some problems with the grill, a square face with round back, meeting the duct coming in. Both are 8" and would neither fit inside or outside one another, so we had to jerry rig it for the time being just using the square grill to cover the wall opening. I do got something to haul out the smoke and maybe some of yours, just lean this way ....Ha LOL

There is no official evaluated sone specs for this fan for the following reason & according to the manufactures website: Who would be stupid.enou xxxx ...since the fan is made for external use and its applicable noise rating is relevant to the distance in which it is used, the test and rating was never established. Nor is being established at this time.

The big contained unit mounts on the out side wall of a house and its duct brings it into the room to be exhausted. It does have a spring damper on the main unit so all you need is everything to get it past 5 1/2 inches or so into your room from the outside and then a grill to cover for the inside wall. It wires directly using indoor wiring and is rated for both a timer switch or speed control. Its very well made, has a 5 year comprehensive warranty, and when I get my speed switch, the noise will not be an issue running at a more moderate setting. Wiring and motor are built in a perminate housing for the outside elements and dust being passively drawn through the intake. So when you look at the picture, the round part is sent into the room and all the other is outside. You could flex tube duct between and not make it straight through if you wanted the actual fan further away from the intake grill. As long as the fan is connected to the duct somewhere it will actively exhaust. But this is an old house and we were fortunate to get it mounted and through straight ahead.

I would go through the ceiling. depending on the length of the run to the gable end of the house is the determining factor. Any more than 15 feet I would go through the roof. It would depend on where you live if you could just vent into the attic. Is it used for storage or just empty space?
Here in NY I would never do it due to the heat venting into the attic in the winter. It melts the snow on the roof only to refreeze, this in the end is not good for the integrity of the roof. Moisture can also be an issue when venting in an attic. You also have to take into account building codes, here you must go through the roof or out the side. We can't even vent to the soffit.

Well then you definitely have no worries about freeze/thaw. If going with the room closest to the end of the house, I would mount an external fan on the side of the house, with it going through the outside wall of the attic. Then run flex duct to your inlet in the room. These can be purchased many places, check out Grainger.com or just google exhaust fans.
Many sites will have a calculator to see what your needs are, (cubic feet of room) By mounting the fan outside you eliminate the fan noise in the room. Just remember the key is to have enough free air flowing in the room to displace the air being moved out. This can be as simple as a cracked door or window or installing a vent to the outside for fresh air. Really not a hard project for someone who knows how to use a few basic tools. Wiring it may take an electrician which I would recommend if your not absolutely sure of it.

Don't know of a paint that would do that but by using something that is washable, you know you can use a damp sponge or cloth to wipe it down should suffice.
I would not put the inlet on the ceiling, you need a good crossflow of air. you could just put a couple thruwall vents from the hallway or another room through to do this. It will be drawing air through so no need to worry about smoke into that area of the house.

I got 2, 8" inline duct fans and installed them in the attic solidly on a rafter and then ran duct work to them, then made the exhaust go to the soffit on the back of the house. The fans I got flow 325cfm, although there are more expensive ones that flow more air... The ones I got were only 80.00 per fan, and the flexible metal ducting was 6.00 for a 10ft section. You need to make sure that there is an air supply that is large enough to supply the fans, or the airflow is restricted.

Blu

Can't wait to hear the report. I tried the purifier route (about $150 for the unit) with activated carbon filter and that was garbage. The only true way to get it done is exhaust the air. I am currently man caving in my garage and I am looking for a more comfortable solution that the Mrs would be happy with, or at least tolerate.

Just looked it up at Soler and Palau and found out that these avg about 12 Sones WOW! Crank up the sound!

$280 isn't bad, just saw the 360+ CFM model fo ~$250 on VentingDirect.com

Purifiers are definitely a haggle. I have spent a fortune on them. I bought all my stuff at VentingDirect.Com and yes you have to be weary of the noise factor of these fans. Mine is a little better now that I have a speed control on and can run it at a lower speed. The trick is to get it as far away from the intake as you can. Mine is straight through at about waist level on the inside wall. I does a good job keeping the room exhausted though. If you were to RELY on a low noise set up, you would have to plan it out more sacredly to achieve such a thing. Like distance and maybe another of the closed inline models that mount inside a duct. Our house is so old that the simplest was the only..est way to do it. If you got a smaller one of these it wouldn't be as noisy,,true...but with the SWF200 and a speed switch, it's like having them all on demand for when ever or what ever you may want do. (a little self generated moral support after I heard how loud it was)... I watches some vids last night on my pc from the comfee chair and the fan on a lower speed and wasn't bothered by the noise, lack of exhaust, and I could hear the speakers across the room. HURRAHAAA

p.s. you also have to be careful with under the doors. That's a sure and easy path. I used a towel rolled up to block the bottom of the door and then my Mom bought me a really neat roll for doorway drafts made just for that.