Despite the heating being on, and having been on for well over a month. When I got home last night my flat was cold. The temp sensor by at about waist height on the shelf was showing 21.5°C. Even with a jumper on. I was cold. Really cold. My feet were really cold too, despite having on my expensive merino wool socks. I moved the sensor from the shelf to about 100mm off the floor. 19.0°C. A 2.5°C temp gradient over about 1m. The Radiators are warm, the area immediately around them is warm, but it's not getting into the room. I think I'm gonna rig up the fan to move some air from around the radiators to the rest of the room. Thermostatically controlled radiator valves are a great idea, but when the sensor is 200mm from the radiator, yet the humans are nearer 3000mm away, it doesn't make for a representative view of the room's temperature.
Currently my bed is about 300mm off the floor in the bedroom, where it was also about 19°C. I slept with a cloak over the top of the duvet last night cos I was so cold.
J