ᐅ New Single-Family Home Construction – Gas or Air Source Heat Pump + Photovoltaic System + Energy Storage?

Deliverer schrieb:

Yep. The new units are quiet. And most importantly, they comply with current noise emission limits. You should make sure you don’t end up with a model that was launched 10 years ago. Something about three to four years after market introduction, modulating, and preferably (though there aren’t many) with R290.
And of course, it always helps if the noise exhaust direction isn’t aimed directly at the neighbor’s bedroom. Rotating it by 90° makes a big difference.

Thanks! We have chosen a Vaillant Arotherm Plus. We plan to position the air-to-water heat pump so that it doesn’t face the neighbor’s house directly. The straight-line distance from the heat pump to the neighbor’s children’s room is 8m (26 feet), and about 20m (66 feet) to the other two neighbors, who are in direct line of sight to the heat pump, but I hope that won’t cause any issues.

french_fry schrieb:

The general contractor (or the contracted heating engineer) installs only Vaillant equipment. We are also getting the controlled residential ventilation system from Vaillant. We do not yet have any basic data like the heating load calculation, etc.; we would need to request or commission that.

So, the groundbreaking hasn’t happened yet?
Wait: I just read that construction is already underway…
Then the data should already be available…

stepfel schrieb:

I find that hard to imagine because hydrogen requires completely different and much higher-quality materials. Neither existing pipes nor pipe fittings are suitable for hydrogen, and probably not the heating system itself either.

Thank you for the information. To be honest, I was just repeating something I read online (including from a company that manufactures gas condensing boilers) and haven’t looked into it in detail yet. There is a brown coal power plant near us that is supposed to be converted to hydrogen, so I was probably a bit too optimistic about that. I am also hopeful about hydrogen-powered cars, for example. And when it comes to gas, I am also relying on biogas and similar sources. The prices for biogas are reasonable.

The problem with hydrogen is the underground efficiency. It will probably be possible to buy it someday and use it for heating or in cars. However, you have to expect that heating and driving will be at least five times more expensive than using electricity. That’s something you have to be willing to accept. The next issue is the "someday" aspect. By the time that happens, we need to already be CO2 neutral.

The problem with biogas is the enormous land use and environmental destruction. We are already using 2% of our land area to grow energy crops to produce about 1% of our final energy consumption. The same area used for wind turbines and photovoltaic panels would be enough to complete the energy transition. For this reason, as well as due to the high costs and relatively low efficiency, biogas production has been declining for some time now.

french_fry schrieb:

We will talk to both neighbors to find out if they might potentially be disturbed by an air-to-water heat pump or not.

In my opinion, that’s a good idea. Please keep us updated. I’m particularly interested because one of the reasons we chose our property was that there are no heat pumps installed in the neighborhood.

That’s actually not really relevant. Either you comply with the required distances, or you don’t. How the neighbor feels about it doesn’t matter legally. I’m also disturbed by all the cars on the street. Obviously, though, (almost) all of them comply with the valid regulations, which are clearly MUCH too lenient and far from technically feasible standards for new vehicles. Can I have the street closed because of that?