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Last post 25 months ago by Sunoverbeach. 23 replies replies.
Cigar room smoke evacuation
drears Offline
#1 Posted:
Joined: 09-21-2021
Posts: 2
I am planning to establish a cigar smoking room in my house. It is planned for North Las Vegas, NV.
There is one heater/AC vent into the room and no air return vent in the room.
Room dimensions: 12x12x8 ft.

Some questions:
1. Is the Panasonic "Whisper Air" the best and quietest air evacuation system? (Planning to vent it out the side wall of the house.)
2. Is 150 CFM adequate for a 12x12 ft room? Should one go higher on CFM? Will that be too loud?
3. If one seals the one entry door with a door sweep and insulation material, do you need another source of air intake into the room?
4. If you establish the airflow (smoke) to exit with the evacuation system, does any smoke accidently go retrograde back into the house heating/AC ducts?

Thanks for your help.

drears


Stogie1020 Offline
#2 Posted:
Joined: 12-19-2019
Posts: 5,226
I don't know crap about this but 150cfm seems too little for a room that has 1152cf.

Is there some acceptible industry ratio of air movement/room size for maximum comfort (smoke, noise)?
Sunoverbeach Offline
#3 Posted:
Joined: 08-11-2017
Posts: 14,583
The Google has led me to a Pure n Natural Systems site that has a calculator for different levels of use.

For 1152 ft3
Level heavy such as a cigar lounge recommended 307cfm

Level medium such as break rooms/designated smoking areas recommended 230cfm

Gauge your level accordingly. I won't bother with the light range.
Sunoverbeach Offline
#4 Posted:
Joined: 08-11-2017
Posts: 14,583
And all hail Google for its bountiful knowledge!
Plowboy221 Offline
#5 Posted:
Joined: 03-03-2013
Posts: 5,133
So what I ended up doing was going to the local hardware store, got an eight inch stove pipe and a box fan. In the lounge (spare bedroom) of my single wide mobile home. I cut a hole in the roof ran the stove pipe down into the room and bungee corded the box fan to the stove pipe. Basically makes an exhaust fan and it works extremely well.

Hope this helps.
frankj1 Offline
#6 Posted:
Joined: 02-08-2007
Posts: 44,211
Plowboy221 wrote:
So what I ended up doing was going to the local hardware store, got an eight inch stove pipe and a box fan. In the lounge (spare bedroom) of my single wide mobile home. I cut a hole in the roof ran the stove pipe down into the room and bungee corded the box fan to the stove pipe. Basically makes an exhaust fan and it works extremely well.

Hope this helps.

how many leather recliners ya got?
Plowboy221 Offline
#7 Posted:
Joined: 03-03-2013
Posts: 5,133
frankj1 wrote:
how many leather recliners ya got?



Leather is a rich man’s chair, I have one wicker chair, and one of those fancy plastic lounge chairs. Jonsey dug them outta the dumpster for me.
frankj1 Offline
#8 Posted:
Joined: 02-08-2007
Posts: 44,211
Plowboy221 wrote:
Leather is a rich man’s chair, I have one wicker chair, and one of those fancy plastic lounge chairs. Jonsey dug them outta the dumpster for me.

I can work wif either...
you and me...we just might be the strangest friendship here.
Spoke to Abrignac the other day, said he's met you and stuff.
Anth is cool.
Thunder.Gerbil Offline
#9 Posted:
Joined: 11-02-2006
Posts: 121,359
drears wrote:

4. If you establish the airflow (smoke) to exit with the evacuation system, does any smoke accidently go retrograde back into the house heating/AC ducts?

Thanks for your help.

drears




If the exhaust system is removing air properly the pressure in the room will be less than the surrounding spaces. This will cause fresh air will be drawn in though the gaps, ducts, etc. and then exhausted with the smoke. Leave the exhaust running for 5-10 minutes after you leave. Then run whatever smoke neuralization system you want (or not).



izonfire Offline
#10 Posted:
Joined: 12-09-2013
Posts: 8,642
That’s some negative pressure.
Hope he can handle it…
Thunder.Gerbil Offline
#11 Posted:
Joined: 11-02-2006
Posts: 121,359
Oh *snap*.
On his first thread too.

"Here lies drears. It's like we hardly knew ye."
"Rest well"
"Ramen"
Whistlebritches Offline
#12 Posted:
Joined: 04-23-2006
Posts: 22,127
Ayite.........to cool a room of this size efficiently would require 4-5000 btu's so using this information lets use 1152 ft3 and divide into our square feet,144 times our btu's.Now lets find out how many gallons using our ft3 we would need to move to exhaust the room in say 20 minutes.To remove 8618 gallons in 20 minutes would require pumping 431 gpm plus another 6.25 L/PS of circulation.Using this info your efficiency rating would be 1.27............anything under 1.5 is good.


You're welcome
Mike3316 Offline
#13 Posted:
Joined: 02-05-2022
Posts: 329
^^
Wow ...... you're like really smart and stuff Blink
Gene363 Offline
#14 Posted:
Joined: 01-24-2003
Posts: 30,660
In Vegas I'd isolate the room from the rest of the house and install a mini split AC system for most heat and some air conditioning and a swamp cooler to cool on the hotter days. The swamp cooler would assure air is pushed out and replaced and cools without reducing humidity levels too low for cigars.

Another thing to consider is an air heat/cool exchanger to push outside air into the room but maintain the heat in the winter and the lack of heat in the summer.

Visit cigar friendly establishments and ask what contractor did their HVAC system, they proble know the best way to handle these requirements in your area. They may only do commercial jobs, but you can pick their brains and they probbly know a contractor that can handle the job for you if they cannot.
Dg west deptford Offline
#15 Posted:
Joined: 05-25-2019
Posts: 2,836
Where's the job?

2 12" penetrations, one active with fan damper & smart controls for 4 points exhaust 8" ducts 2nd penetration with mini split as exterior passive intake fresh air cycled with smart damper controls.

Or if you really have money just get an E R.V.
Combs the air

Either way add a rabbit air / ozone machine for after hours use.
Dg west deptford Offline
#16 Posted:
Joined: 05-25-2019
Posts: 2,836
You gotta double the load on that mini split
I'd go 3 tons
You'll need to clear it in advance with your Building official
Whistlebritches Offline
#17 Posted:
Joined: 04-23-2006
Posts: 22,127
Mike3316 wrote:
^^
Wow ...... you're like really smart and stuff Blink



I'm a water guy...............WTF do I know about air circulation
MACS Offline
#18 Posted:
Joined: 02-26-2004
Posts: 79,584
Do what I did... Install a 1500 CFM whole house fan.

Put the intake vent for the fan in the ceiling of your smoking room. Your attic will smell like cigars, but who cares? BigGrin
DrafterX Offline
#19 Posted:
Joined: 10-18-2005
Posts: 98,506
The homeless guy living up there... Mellow
frankj1 Offline
#20 Posted:
Joined: 02-08-2007
Posts: 44,211
nobody cares about the homeless guy
Stogie1020 Offline
#21 Posted:
Joined: 12-19-2019
Posts: 5,226
We just overcomplicated the crap out of this guy's issue.


Nicely done gents!
drears Offline
#22 Posted:
Joined: 09-21-2021
Posts: 2
Thank you all for all the useful info!

drears
Sunoverbeach Offline
#23 Posted:
Joined: 08-11-2017
Posts: 14,583
The useless stuff was purty good too
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