Thanks so much, Dougy83, that was so kind of you to take the time.
I don't have 4026s in stock, but I do have an open account with mouser. I'll order the parts in friday or saturday so I can have them over the 4th of july shutdown at my day job.
One thing many people don't understand is in a greenhouse, keeping the interior cool is harder than keeping it warm. Even last winter with 20 below temps, on a sunny day, the inside temperature hovered around 90ish degrees. Of course, at night, the heater system kicked in.
Misting in the summer, when the water evaporates, it takes heat with it, but too much water in a hot green house breeds critters and mold. So, fans run to keep humidity in check. Too much air and the CO2 nose dives.
thanks again!