I’m not convinced that the RF harvesting is that helpful. The excellent Lutron Pico costs about $30 (and surely much less to produce), is extremely reliable, an

I’m not convinced that the RF harvesting is that helpful. The excellent Lutron Pico costs about $30 (and surely much less to produce), is extremely reliable, and lasts for quite a few years on a very inexpensive coin cell. Also: > Imagine heating a 3,000-square-foot house, but you’re only using a room at any given time. If your house has wirelessly controlled vents, you can close the vents outside that room, or maybe a couple of bedrooms, The problem with a damper-based zoning system (which this is) is that the system needs to be fairly carefully designed to work well, that there are lots of moving parts, and that failures are common and suck. By the time you’re designing a system to work well with zoned dampers, you might as well use wires. The actuators take non-negligible power when moving, too. I suppose one might be able to retrofit something with wireless controls, but this is IMO a terrible idea for new construction. (Also… ductless systems are inherently zoned and are usually considerably more efficient.)