Am in the midwest and we have days where the temp and humidity are low at night (mostly spring and fall) when we can get free cooling by opening windows and turning on the whole house fan (for those that aren't familiar its a big fan in the ceiling that pulls air from the house and pushes it through the attic and out the vents). Ideally this would start very early in the morning - about 2 - 4 AM. I start it when I get up but it is already warming up. Wanting to put motors on a couple windows so I can automate them. They will be windows above ground level for security (or maybe just limit how far they can open). Currently have casement windows that could be automated by replacing crank with gear motor. Torque limit will protect if thing get stuck and eliminate need for end switches. But we plan to move in about a year so thinking about new house with double hung windows. Anyone done something like this? Thinking of putting things together (linear actuator, etc) rather than buying off the shelf solution.