ᐅ Home Construction 2016 + Gas Heating

merlin83 schrieb:
That is, of course, frustrating. However, I don’t consider it universally applicable. For many other builders (including us), a gas condensing boiler combined with controlled residential ventilation worked well.

That’s true. I keep being surprised by this as well.

I finished the house exactly according to the construction manual. And it works much better than expected. Although I followed the 80% rule during construction: 80% is enough, the remaining 20% only costs money, time, and energy... haha.

The energy consultant (who was required here in NRW) also came to the same conclusion about the house – it’s close to KFW55 standard.

I suspect the manufacturer calculated way too conservatively, which led to the conclusion that you need a costly investment catastrophe…
I think it’s due to the principle of “expand-as-you-go” building and the tolerances involved.

The solar thermal system (ST) would – judging by the basic calculations I’ve learned and barely forgotten professionally – absolutely not be necessary.

I won’t get more worked up about it now. Around 4.5 sq m (almost 5 sq m) of valuable (haha) roof tiles are very well protected from weather influences. The system is just there. You can look at the numbers… try to stay positive somehow… and rationalize the meaningless.

Since I installed the photovoltaic system, I’ve become the eco guru in the region here. Everyone comes knocking, wanting coffee and advice… (two neighbors have now installed photovoltaics—they were smart and got good coffee; the others declined the investment in solar thermal, they planned to add it later and are now spending their money on the garden instead).

The completely unimportant and pointless boost to my local recognition and Jesus sandal eco status from equipping this tiny house with collectors on the roof that barely fit... well, I honestly have to smile about that right now…

Best regards,
Thorsten

T21150 schrieb:
esus Latschen-Öko Status i

I have to fix that.

My new car (hopefully arriving in July) – just for fun, I’ll stick on an

AMG63 – V8 badge on the back. I actually bought the smaller engine version without the model designation... hardly anyone will notice anyway. I ordered the exhaust trim pieces on both sides for little money. A spirit stove with a flashy image. And enough space for the AMG badge... 😉 🙂

Also, Abi 85 – Dad is paying, plus gasoline costs 3.10 euros per liter (about $1.20 per quart)…

Very useful here: The rising construction costs make a carport unnecessary. Everyone passing by can see the car anyway…

So soon I’ll be an environmental sinner again… Smile.

😀 😱

So, I have a backup system on the roof, and I can't escape the hot water in summer... but that doesn't mean I like it or that the investment was worth it.

I completely agree... it’s really not worthwhile here, even though I sometimes get solar gains in winter... but I still wouldn’t recommend vacuum tube collectors, unfortunately they tend to break down even faster than flat plate collectors.

P.S. I bought a 2.2-liter diesel SUV last year—am I outdated now?

T21150 schrieb:
The share of renewable energy caused this strangely expensive and ineffective system. Yes.
Based on the other figures, the house easily and effortlessly covers everything, it really doesn’t need this solar thermal system. Even from a calculation standpoint, the controlled ventilation with heat recovery provides significantly more, which is believable in practice. The solar thermal values are made up, nicely calculated, pure nonsense.

It could have been avoided. With a heat pump.

A neighbor next to my property will start building in September. Initially, he wanted a ground source heat pump, but due to the high costs, he decided against it. Now he is installing a gas heating system. He probably also has to install an air-to-water heat pump, but it will likely never be properly used.

What does he need them for then? That doesn't make any sense.

I would like to see the cost calculation. It is surprising that a geothermal heat pump, even with a subsidy of €4,000 (about $4,400), is more expensive than an air-to-water heat pump plus a gas condensing boiler and connection. You also need a larger utility room for that.