- Jul 24, 2010
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There is solar power fan and vent available.
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If your coop is well ventilated, there won't be major differences in positive or negative pressures created by the fan.
Quote: Negative pressure wouldn't work either if there weren't openings in coop for 'make up air'.
Either positive or negative pressure would work about the same as far as airflow.
Negative pressure might work faster for cooling inside of coop if temp outside was significantly lower.
Actually, the problem wouldn't be pressure rather than air not moving anywhere.
On this forum, I believe the term "proper ventilation" defines the ability of warm moist air to naturally rise and exit the coop without placing a draft directly upon the birds.
Even a $15 bathroom fan will move about 50 CFM.
[COLOR=333333]If the concern is about temperature, and [/COLOR]If your coop was 10x10x8, or about 800 cubic feet, the fan could replace all the volume of air inside with outside air temperature, in about 16 minutes...
I had similar concerns during my summer heat spells.
My solution was to install a big window and keep it open when the conditions are a concern ( late spring through early fall :/ ).