So my upstairs gets pretty hot in the summer and I wana cool the area down without using AC as much as possible.I have a small triangular gable in the main part of the attic (there is a 2nd attic space that is just a crawl space with another smaller gable, so there is extra venting to prevent mold).I know the right way to do it is to put a roof mount vent, but we intend to redo the roof in a couple of years so I figure that would be the opportune time to do that.I was looking at gable fans at Home depot, would they be a good option? I figured build a wood frame and mount it to the studs. The only thing that sucks is that there is a stud going down the middle of the gable.https://www.homedepot.com/p/Master-Flow-1450-CFM-SIlver-Electric-Powered-Gable-Mount-Electric-Attic-Fan-EGV5/205924915?MERCH=REC-_-brand_based_collection-_-100098472-_-5-_-n/a-_-n/a-_-n/a-_-n/a-_-n/a#see-more-detailsI mean it's better than my original idea of getting a garage fan and just blowing towards the outside wall.
Just make a little shelf right under the vent and mount a regular ol box fan pointed out. Might not be the end all be all solution but depending on how the building breathes it may get you farther than youd expect
>>2995388I figured do that and use one of those Thermostat switches to control it.
>>2995330Attic fans are a waste of money. If venting is already inadequate they end up causing negative pressure in the attic. This causes air to be pulled from the conditioned space (IE inside the house). Not only does this vent cooler air into the attic, wasting it, but causes hotter air to be drawn into the house from somewhere else.As you said a roof replacement is already in the cards, make sure you talk to the guys about your venting situation. If it is indeed inadequate you'll want to fix that at the time the roof goes in. Correctly installed passive vents will vent the attic without the need of fans.A fix you can do now that won't interfere with the reroof is to review your insulation. If you have standard insulation up there and it is in good condition you might look into radiant barrier to boost it.
>>2995399In the summer, I can fuse atoms in the upstairs without AC, so I doubt it's adequate.
>>2995403Best case, an attic fan is only going to get the attic temp down to a few degrees hotter than what is is outside. Generally it is still going to be much hotter in your attic than the outside temp. So, if its 100ยบ in your attic and your walls have shit insulation you are fucked. If you can insulate and seal the living space properly you are 90% of the way there. Doesn't matter how hot it gets in the attic if the insulation is beefy. After that it is just a matter of being able to cool it. If you have AC, great. If it cools down at night and you can put a fan in an open window, even better.
