Energy refurbishment does not pay off! What to do?

The gas heating system is about 25 years old... I can't say the flow temperature...

That would be important though .. also instead of 2600 euros, state the actual gas consumption.

I wonder why there is so much emphasis on the amortization in the renovation. No car owner does this kind of calculation. And when it comes to kitchen purchases and bathroom renovations, such considerations rarely play a role for home buyers either.

This is a house with an exposed roof truss (5m height) and on the narrow side of the house there is a complete window front with fixed triangular windows and a huge sliding door. Despite the choice of (cheaper) plastic windows, the replacement is apparently so difficult and therefore expensive. Added to this is the shading of this window front and 6 more standard double windows, partly with roller shutters.

Still way too expensive. So 5,000€ for the double windows and the rest for the large glazing? No way.

Of course we thought about the complete package: new windows, new radiators, additional roof insulation + basement ceiling insulation, heat pump and solar ---- but then I’m definitely over 100,000 Euro, rather around 130,000 Euro.

... and then you deduct a hefty subsidy in the mid five-digit range. Possibly spread over several years.

It's also a bit funny that you want to continue using 45-year-old windows for decades, but at the same time argue that new windows are not worth it because they would have to be replaced after 40 years. I suspect you simply don't feel like spending money on something that isn't immediately fun, but just sensible. Like socks and underwear.

what is not immediately fun, but merely sensible. Like socks and underwear.

The right underwear on the right person is not sensible, but immediately fun.

But it's true. Wash me, but don't get me wet.

No, I simply don’t feel like exchanging something that ultimately doesn’t pay off and doesn’t bring me any real benefit. As I said, the indoor climate is completely fine. And unfortunately, even though it is always doubted, the 60-70,000 euros are unfortunately correct... for me, the only question was whether there are people here who speak out against energetic renovation but also talk about advantages and disadvantages. Unfortunately, I can’t see any real benefit in the expenses except for a few hundred euros (depending on the scope of renovation). Better indoor climate? I don’t need it, it’s already fine, better resale value? Highly questionable because of the location and who knows what will happen in 40 years! The only advantage would be climate protection. And I would also like to pursue that - but I can’t afford the prices mentioned.