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Having some odor issues...

Keep goin

Member
Hey all,

Having some issues when my carbon filtered, thermostatic controlled exhaust fan is not on. I'm getting back pressure from the room to the outside...simple heat exchange...warm room, cold outside, warm air wants out. Understandable, but it STINKS!!
I think it's just leaking out of the intakes.

If I know someone is stopping by I can turn on the exhaust fan on low to create air flow through the filter. Which obviously also creates air movement through the intakes in the right direction.

Problem number one with that...it's too cold outside to keep that up for very long. The room gets out of proper temp range pretty quickly with the fan just on, especially with lights off.

I have 3 different air intakes. All with back draft dampers (which obviously only work so so). I tried taping one of the intakes shut to reduce the air coming in while running the fan...no luck. Too cold, too quick.

Air intakes are coming in from outside. Venting into a larger interior structure. Air flow noise caused me to go "the wrong way" with my exhaust. It's causing problems...but that's another post...

Just trying to give as much pertinent information up front.

Any ideas for fixing my problem would be appreciated. If you need further info just ask...I'll be checking in periodically.

Look forward to some good ideas.
Thanks in advance
KG
 

Crusader Rabbit

Active member
Veteran
You may have to put a heater in the grow room to allow you to vent during lights off. See how long it takes with the fan off before the odor becomes noticeable. You might be able to get by running the fan for fifteen minutes every hour or so during the dark period.
 

fungzyme

Active member
There's no way you can use inside air so you can run your exhaust (and your filter) non-stop? Or dial the exhaust fan back far enough to keep your room from getting too cold.
Other than that, adding another fan to scrub non-stop within your grow space...
 

Keep goin

Member
No, it's an out building. No inside air available...just cold ass outside air. I have the space insulated well enough. With my dehumidifier running and heating the room the temps stay just right. Problem is I run at night so during the day...lights off, fan off, smell ON...
 

siftedunity

cant re Member
Veteran
either get a one way duct fitting, so it closes when the fan is off, or, leave the fan on and heat the room(you will be wasting heat though) or leave the fan on and duct the air backinto the room and still use heaters...

where theres a will, theres a way!
 

thinn

New member
Re: Having some odor issues...

I know with my 6in can fan HO the seam on the actual fan draws air in (air not scrubbed with the carbon filter) I plan on aluminum taping the seam on the middle of the fan. Maybe your prob, maybe not just a thought....

Sent from my SPH-L710 using Tapatalk 2
 
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