exhaust ?'s

FoolBloom said:

How do I calculate for the exhaust fan I need, I see they come in all different cfm. Also, I currently have no intake exhaust fan, only output. I do however have 2 intake ports low in the room, when my exhaust comes on I can feel the air coming in, but I seem to be reaching a higher humidity than I would like. Is it possible to lower my humidity if I added an exhaust fan to my intake and put it on the same timer.

Also curious how often everyone vents their room. I have been on 1 minute every 5 min. And Im not sure of the cfm to my output fan either.

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FoolBloom said:

my room is leakproof from light.

would I need the same cfm for intake output?

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woodsmaneh! said:

Don't think the light dimmer is a good Idea. Most are rated at 1.5 amps and will burn out or burn your fan out. They are not rated for fans. Not worth the risk for a couple bucks more. Look for the fan control on the box and 5 amps. This will work for a 4" fan. If you can find a solid-state control, more money but worth it.

You should be able to change the air in your room every 1 to 2 minutes.

so a 10 x 10 x 8 room is 800 square feet you need a fan that can push 400 cfpm to change the air every 2 min.

Buy the right size a little bigger is better that smaller. Try not to us a reducer as the up the noise level. Hang them from bungee cords the thick black ones. Stops the vibration going through the structure.

Hope this helps you out.

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