Shelly BLU TRV 3-pack

The app shows each valve's temperature right on my phone, so I can tweak the bedroom from the couch without getting up. These things hold a setpoint way better than the old dumb valves I had, and the battery drain is barely noticeable after a month.

Installing all three took me maybe twenty minutes total, and the app’s scheduling is straightforward enough that I set a different temp for each room without a manual. The valves respond to changes within a minute or two, so the hallway doesn’t overheat when the sun hits it. Solid upgrade for anyone

The Bluetooth range on these is genuinely impressive—I can adjust the temp from the hallway without needing to be right next to the radiator. Setup was straightforward with the app, and the valves respond within a second or two, which makes dialing in each room feel effortless.