Re: CFM question
Quote Originally Posted by quo155 View Post

Hey Cion! For your room size and location, I'd shoot for 700cfm exhaust, minimum.

1. The 1500+ really is overkill, IMHO and I'd keep it between 700cfm and 900cfm...as long as the number is more than whatever you decide to feed into the room. A speed regulator is a great idea!

2. 675cfm is about right for fresh air, as long as the number is less than your exhaust. It doesn't sound like you'll need a duct heater as you'll have plenty from other sources. If you're not supplying the room from your main system, then I would use a fan to pull from the outside, in...672cfm.

Portable AC's can work in your area (not here where I live!) and you can get a decent EdgeStar unit that does not require a window, you can install it with the supplied ducts to a wall with vents. It pulls air from the outside and from the inside. They're not real efficient at cooling down here but reviews say they work in your area. They are also a great dehumidifier, as a bonus...if even needed where you are. They run around $500-$600.

Whatever route you decide to go, I hope this info helps some...

New Question - Cion

Hello Tommy thanks for your input, so you say you would go for a MINIMUM off 700CFM but 1,500 CFM is overkill. What do you think would be that magic number then? I'm looking at three ultra quiet 280CFM fans, totalling 840. Do you think that would DEFINITELY do it or should I go 1000CFM?

So you believe I should buy a fan to PULL air back into the room, but keep it below the CFM going out...

So, you don't believe just having an open vent to outside would be enough with the exhaust pulling air out? I thought it the exhaust fan would cause a negative pressure, and would pull air from anywhere it can get it...that would be that open direct vent...wouldn't it?

Tommy you didn't answer this...I'm curious to your thoughts (below)

I've seen photos of the exhaust and fresh air intake side by side on the outside of the house in others cigar room. Doesn't that defeat the purpose of a fresh air intake? Wouldn't the intake pull the cigar smoke from the exhaust right back in? (photo below)

CFM 2015-03-19 16.44.56 copy.jpg

You said not to buy a duct heater because you believe I would have sufficient heat with the baseboards and electric fire place, but you don't think the room would get cold in this up north 10-20 degree winters air blowing directly into the room?

I'm sorry If I'm asking the same questions or questioning certain things you answered, I just want to be sure, and I want to order everything today.

Thanks Tommy I really appreciate your opinion/facts!