When you build your own house you get to make all the decisions. That sounds great until you realize you also have to live with all of them.

My house is Wi‑Fi and Shelly end to end. When I finally add battery sensors, I still plan Zigbee first — and Matter as a buying filter, not a rip-and-replace.

Smart home products love to sell you convenience. What they do not mention is that most of that convenience runs through someone else's server.

Installer left the weather-compensation offset at +5. Dropping it to 0 cut heat-pump energy about 21% — same house, same week of March, Shelly numbers.