Dear Homebuilders,
As a layperson in the construction field, we signed our house contract last week.
Single-family home with 146 m² (1,572 sq ft) of living space, 36 cm (14 inch) aerated concrete blocks, air-source heat pump, one-and-a-half stories, hip roof, facing south.
House price approximately 260,000.
I have now studied the KfW standards intensively and am completely undecided about whether to hire a KfW expert to calculate how much additional effort it would take to achieve KfW 55. If this costs less than or just over 18,000, then it would make sense to do it. My thought is whether to use decentralized ventilation room by room (bathrooms, utility room, pantry).
I am not sure how to proceed.
We are building through a developer who does not seem very keen on extra insulation, etc.
Difficult situation.
As a layperson in the construction field, we signed our house contract last week.
Single-family home with 146 m² (1,572 sq ft) of living space, 36 cm (14 inch) aerated concrete blocks, air-source heat pump, one-and-a-half stories, hip roof, facing south.
House price approximately 260,000.
I have now studied the KfW standards intensively and am completely undecided about whether to hire a KfW expert to calculate how much additional effort it would take to achieve KfW 55. If this costs less than or just over 18,000, then it would make sense to do it. My thought is whether to use decentralized ventilation room by room (bathrooms, utility room, pantry).
I am not sure how to proceed.
We are building through a developer who does not seem very keen on extra insulation, etc.
Difficult situation.
If you hire an expert, you naturally have to pay them as well.
KfW 55 is not much more complicated than KfW 70 in terms of what needs to be built.
Just plan for more money for the walls, a controlled ventilation system, and a heat pump for heating, and you usually achieve KfW 55.
KfW 55 is not much more complicated than KfW 70 in terms of what needs to be built.
Just plan for more money for the walls, a controlled ventilation system, and a heat pump for heating, and you usually achieve KfW 55.
Ok.
Since I already have an air-source heat pump included in the house price and 36cm (14 inches) walls, I will probably only need roof insulation and the domestic hot water system. That should not exceed 18,000 by much.
I will take care of it... Let’s see.
Thanks for now.
Since I already have an air-source heat pump included in the house price and 36cm (14 inches) walls, I will probably only need roof insulation and the domestic hot water system. That should not exceed 18,000 by much.
I will take care of it... Let’s see.
Thanks for now.
Erik1990 schrieb:
My builder probably has never installed such a system before, or at least it was never mentioned during the initial discussions. I find that a bit disappointing. It's a bit disappointing that you're only realizing this now.
If you’re involved in house construction, you will also deal with energy-saving regulations. Then with KfW funding, and then with mechanical ventilation with heat recovery.
New builds: always with centralized mechanical ventilation with heat recovery; decentralized systems are just an alternative.
Erik1990 schrieb:
What happens if I hire a KfW expert to calculate everything with centralized mechanical ventilation with heat recovery, but then I don’t go for the KfW 55 standard?
Do I lose the costs then? You don’t need a mechanical ventilation expert. You need an offer for a KfW 55 house. The rest is done by the builder, who will have the calculations done.
Don’t forget: you’re the one purchasing what you want. The builder doesn’t decide, you do.
If necessary, use your 14-day cancellation right and find someone who builds you a technically up-to-date house. Nowadays, if you can afford it, always with mechanical ventilation with heat recovery.
Similar topics