[osolemio]

I am (still) doing my super major overhaul with solar electricity and heating, long term heat storage, insulation, drain water recovery and ... g.. knows what. For now most rooms is regulated by simple thermostats on each radiator, although a newly built room and a refurbished ones now have underfloor heating.

The new heating system (hot water buffer) regulates the outflow temperature in two independent heating circuits, so I use #2 of those for the underfloor heating, and #1 for the original radiators.

Temperature here is just around 70, but as each room has it's own mind, it varies a bit.

My project is so comprehensive that just speaking of temperature in itself is only part of it. I have almost 1000 USG of water heat storage, apart from the 300 USG main water buffer tank (hot water is piped, not conventional tank water, so it can be used for cooking, coffee and so on).

As all window glass has been changed to super efficient glass, it was interesting to see how well the underfloor heat would keep the new rooms warm. A few days ago it was almost -20F (actually, C and F meet at -18), and that morning I could feel the cold from the window.