My locale is having its usual Hell's Front Porch season but some of my friends have it worse --particularly those in the UK with spiraling utility costs. For a while now, I've been thinking that direct hub control of the attic ventilator in the cooling and heating seasons might boost their effectiveness. Anybody tried?
My new Ecowitt attic sensor and the Quick Chart app confirm that the 1500 CFM fan is maxxed out in the summer from 10am to 8pm, but what about pre-cooling from 6am if the outside temp & humidity aren't too high? (I was surprised by how long the attic retains heat after sunset.)
In heating season, maybe hold off running and let the attic build some heat.
BTW, a quick check of a few device switches turns up a top ambient temperature of 104F so it'll have to located in the living space.