ᐅ Building a House According to the Energy Performance Act: Still Acceptable or Better to Aim for KfW 55 Standard?
Created on: 3 Dec 2021 13:19
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Buddy0505
Hello everyone,
We are planning to build our house with the company Markon (a regional provider in Berlin and Brandenburg). According to the building performance specifications, the house will be constructed in compliance with the Building Energy Act.
The features, price, and feedback from acquaintances who have built with this company are positive.
Now to the question: would you still choose to build according to the Building Energy Act? Especially considering possible legal changes that might occur due to the new government.
Thank you all and have a great start to the weekend 🙂
We are planning to build our house with the company Markon (a regional provider in Berlin and Brandenburg). According to the building performance specifications, the house will be constructed in compliance with the Building Energy Act.
The features, price, and feedback from acquaintances who have built with this company are positive.
Now to the question: would you still choose to build according to the Building Energy Act? Especially considering possible legal changes that might occur due to the new government.
Thank you all and have a great start to the weekend 🙂
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Buddy05053 Dec 2021 13:40Tom1978 schrieb:
It’s always a question of cost-effectiveness. A photovoltaic system plus a heat pump (ideally a ground-source heat pump) should be planned for nowadays. Add a mechanical ventilation system with heat recovery and you’re not far from reaching KfW 55 standard or even better. I wouldn’t count on a gas boiler these days...We would have an air-to-water heat pump and preparation for photovoltaic installation (in case there is funding available for retrofitting).
Buddy0505 schrieb:
We would have an air-to-water heat pump and a photovoltaic system preparation (in case there is future funding for retrofitting) An air-to-water heat pump means having that bulky outdoor unit. You have to decide for yourself. Also, it is not as efficient as a ground-source heat pump. I would install the photovoltaic system right away. With subsidies, the price of photovoltaic systems will also increase, so you won’t benefit much from it.
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Benutzer2003 Dec 2021 14:05Tom1978 schrieb:
An air-to-water heat pump means having that unattractive outdoor unit. You have to decide for yourself. Also, it’s not as efficient as a ground-source (geothermal) heat pump. Will you recover the additional cost of maybe €10,000 (just an example) quickly through heating savings? Reducing heating costs from €500 to €450 would mean you’d have to wait 200 years to break even.
P.S. I think ground-source heat pumps are great and had one in my previous house, but it was much more expensive than the air-to-water heat pump in my new home (a ground-source heat pump was not an option, especially not in EL).
Benutzer200 schrieb:
Will you recoup the extra cost of maybe €10,000 (just an example) quickly through heating savings? A difference of 500€ versus 450€ heating costs would mean you’d have to wait 200 years for payback.
P.S. I think ground-source heat pumps are great and had one in my last house, but it was still much more expensive than the air-source heat pump in my new house (ground-source heat pump wasn’t feasible here, especially not in EL).For us, there were no additional costs for the ground-source heat pump with surface collectors. Yes, with deep drilling it would have been about €6,000 (around $6,500), but we would have gone for it anyway. However, the property is located in a water protection zone.
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Benutzer2003 Dec 2021 14:33Tom1978 schrieb:
We had no additional costs for the brine-to-water heat pump with ground collectors.I'm glad to hear that. Usually, there is an extra charge – after all, the ground collector doesn't install itself and involves additional work.
KingJulien3 Dec 2021 14:40Tom1978 schrieb:
An air-to-water heat pump means having that ugly outdoor unit outside.There are also indoor-only units, but those are usually installed in the basement.Similar topics