Intake from a basement window? Intake from a dryer vent?

[Guest]

How would you intake from a small rectangular basement window? It is boarded up. One concern I have is rain, could it get inside from the fan?

And, can you intake from a pre-existing dryer vent? Would there be any problems when it rained?

 

[SpacedCWBY]

You could use the existing dryer vent as long as the pipe is clear of dustbunnies and lint. You'd fill your buds with dusty crap. The vent outside would also have to be the kind w/o louvers so that it could draw the air. I personally wouldn't share it with the dryer. You could just install another vent outside. If anyones asks, tell them it's for the furnace. If it gets cold in the winter there, you could give the kids a cold with bitter cold air coming in.

Good luck...

 

[Guest]

So you're trying to use the vents as intake not exhaust?

I guess you could do this if the air outside was actually cooler than the air inside your home/basement. However, this seems kinda odd in summertime....??

 

[Guest]

I am just looking for some way to intake fresh air into the house, because I do not want to cause negative air pressure by having more exhaust than intake in the house. Negative air pressure can cause problems

 

[gregor_mendel]

What problems?
I couldn't control odor without it.

gregor_mendel

 

[Guest]

Negative air pressure

Exhaust fans may be running in your buildings to remove smoke, fumes, and contaminated air. If you don’t have a make-up air system - or a large enough make-up air system - you have a negative air pressure condition.

Other building conditions such as temperature gradients can cause this phenomenon.

Negative air pressure means that air is drawn into the building to replace the air removed by exhaust systems or other building conditions.

Negative air pressure creates many problems:

* Drafts at the floor level
* Back drafting down furnace stacks
* Cold spots and wind chills in working areas
* Exhaust fans starting to operate inefficiently
* Strong air inrush when a door is opened..

This inrush of air brings with it fumes, insects and the outside climate. Make up air fans are used to offset negative air pressure.

So when you have more exhaust than intake it starts trying to draw air from other places like furnaces or gas stoves. This results in the furnace emitting toxic gases like Carbon Monoxide into the air.

But this all depends on your home, some homes are built to be "air tight" and obviously will have this problem easier than others.

What do you mean by you couldn't control odor without it?

 

[gregor_mendel]

I have a six inch fan pulling through a can filter, blowing out of my room.

The only actual intake is about two inches in diameter. The rest of the intake is the fact that the room is not sealed.

The negative pressure keeps odor from exiting anywhere but through my filter.

The information you posted includes good reasons not to have negative pressure for a building in general, but it great for a grow room.

gregor_mendel

 

[Guest]

yup, i just recently realized that you want negative air pressure in your grow room or cabinet, but for the entire building/house it is bad.

therefor i wont be trying to use my entire basement as a grow room, just going to build a cabinet