Whenever my thermostat instructs the a/c or furnace to operate, I want it to also open or close a specific duct via a small electric motor that is attached to the duct.
1. What size electric motor can I use?
3. How do I wire this electric motor to the thermostat?
4. How do I control the electric motor so it opens and closes the duct. Ideally it will only use electricity while it opens or closes the duct as upposed to using electicity to constantly keep the duct open or closed. I assume this will also require some kind of switch?