barsoap , 10 months ago

You know if you muppets used sane units you’d be right. But you’re using colonial measurements.

Here’s conversion table. US R30 is equivalent to proper units R5.3, R60 is R10.5.

…and we don’t really have recommendations as such. KfW55 is nowadays mandatory for new construction, KfW70 and up gets you cheap loans. KfW70 means less than 45 kWh/m² per year for heating and they don’t really care how you achieve that. We didn’t really get around yet factoring cooling into stuff.