My family has an old art studio in southern Maine. The main studio room is 20'x40' with a 20' ceiling, and a 15'x15' multipaned wooden studio window. The foundation is built on ledge, so moisture is always an issue. The attic is 20' x 40' with only 2 large ~3'x5' gable vents, and one powered gable fan. There is a 4'x4' vent in the ceiling of the main studio room into the attic.
The studio is shut down entirely in the winter. Every winter have issues with condensation on the studio window, often causing cracks in the glass. Also mold tends to build up in the A/C wall unit. My parents have always closed the gable vents in the winter, citing an effort to decrease moisture getting into the studio. I reckon that is a bad idea, and even think that a solar gable fan running in the winter could be beneficial.
If a solar gable fan is beneficial, what size CFM would be best? An 800 CFM solar gable fan would be adequate for the attic itself based on your formulas, but considering an 1820 CFM fan to move as much air from attic and studio room as possible, but fear pulling in rain, snow, etc. from the other gable vent.
Thank you in advance for any recommendations!
The studio is shut down entirely in the winter. Every winter have issues with condensation on the studio window, often causing cracks in the glass. Also mold tends to build up in the A/C wall unit. My parents have always closed the gable vents in the winter, citing an effort to decrease moisture getting into the studio. I reckon that is a bad idea, and even think that a solar gable fan running in the winter could be beneficial.
If a solar gable fan is beneficial, what size CFM would be best? An 800 CFM solar gable fan would be adequate for the attic itself based on your formulas, but considering an 1820 CFM fan to move as much air from attic and studio room as possible, but fear pulling in rain, snow, etc. from the other gable vent.
Thank you in advance for any recommendations!
source https://hvac-talk.com/vbb/showthread.php?2223592-Benefit-of-gable-fan-in-house-closed-down-for-the-winter&goto=newpost
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