Electric damper control for my forced air heating system

[peterxian]

Thanks, I’d been meaning to post to Share Your Projects about this — hope it helps:

Motorized inline HVAC damper for zone control

I’ve been using this motorized inline HVAC damper for “zone” control in my spare bedroom for over a year now, and have cited it several times as an example so I thought I might share the full implementation in case it inspires anyone. Concept The room is fed by a single HVAC duct which now has the damper installed inline. When the damper is closed, the room is cut off from the central air. When the damper is open, the room is heated/cooled along with the rest of the house. Sensors in the room …