Gas heating + solar & controlled residential ventilation or air-water heat pump Energy Saving Ordinance 2016

Hi I do understand your post, but what it has to do with mine is only partly clear to me. I have nothing against gas, it just didn’t work reasonably for me. It has already been said that heat pumps are not rocket science. If properly designed and installed, they are a sensible heat generator, as the mentioned database shows. And whether fossil fuels are the be-all and end-all, I don’t know either – and now please don’t come with biogas [emoji6]

If designed and installed solidly, they are a reasonable heat generator, as the mentioned database shows. And whether fossil fuels are really the ultimate wisdom, I don’t know either - and please don’t come now with biogas

No, I am not an evangelist for cow-puff heaters, nor do I have any shares in other heating technologies. If you have found one that can offer something other than brochure forecasts for its economic efficiency in real use with average users, that’s good. You just read a lot in forums or building owner magazines about philosopher’s stones, and about disappointed users (whose realities did not match lab target numbers - for example because “disturbing factors” were underestimated). Therefore, my advice is: “take what you know yourself - even if something else is theoretically supposed to be even more optimal.” By no means do I want to advocate a return to the campfire.

What you know yourself. So only fireplace. And even with that people heat "wrong." Almost no one knows optimal combustion value operation. Flow temperature at 60 degrees with an outside temperature of 5 degrees. Quickly turn the thermostat and want to be warm in half an hour.
If the radiator is not glowing, something is wrong.

The disruptive factor is called users without the willingness to learn and nothing else. We live in the year 2018 and people are more interested in the 1000€ phone than the 10,000€ heating system and its operation.

What is interesting is the shape of the toilet and not one of the essential factors in ancillary costs. It should be warm. How is irrelevant. Save 15% a year? I don’t care, as long as I get a discount on the next car.

The energy transition has failed. People simply do not care. Therefore, neither does politics.