Guest without ST will also be difficult with a ventilation system.
One of the providers we still have in the selection has just replaced ST with ventilation as the standard this year. Together with a gas condensing boiler. That was apparently easier.
7-person household, everything calculated according to the Energy Saving Ordinance. Windows must have a total U-value of 0.7
OK. I strongly recommend you take vacuum flat tube collectors with 16 sqm or 18 and then integrate the heating. You will have much more success with that than with conventional collectors.
Yes - windows must have 0.7 now, that is correct. I still have crappy 1.1.
OK. I strongly recommend to you. Take vacuum flat tube collectors with 16 sqm or 18 and then integrate the heating. With this you will have much more success than with conventional collectors.
Yes - windows must have 0.7 now, that's correct.
I still have crappy 1.1.
Have you used vacuum collectors yourself?
We were advised against it because they supposedly get damaged very quickly as soon as strong hail, New Year's rockets, or other things hit the collectors. Classic collectors are apparently not as sensitive.