Wolfgang Feist
wolfgangfeist.bsky.social
Wolfgang Feist
@wolfgangfeist.bsky.social
Humanist. Physicist. Educator. Engineer.
Energy efficiency is key to solving the climate crisis – and the problems associated with it. Energy efficiency is NOT an abstract concept: it is real in the form of passive houses, heat pumps, electric vehicles,...
Agreed. Just one more thing: Taking the "extra step" to achieve Passive House status is (by far) not as difficult as is often claimed: It's a matter of know-how and experience. Once implemented, it's actually quite simple. (Good airtightness is the core example—PH makes implementation achievable.)
June 7, 2025 at 4:16 PM
Reposted by Wolfgang Feist
Yes, Passivhaus would be an aspiration. Decent insulation gets you a long way, but to ventilate a house well, without excessive heat loss, you really want airtightness + MVHR. These are easily incorporated in a new build, but in the UK we are caught in the expensive-land, cheap-structure trap.
June 7, 2025 at 12:10 PM
PV and passive house (PH) are a dream team: PH keeps peak loads during cold periods low - as well as avoids high summer peaks. Thus, PV can deliver a great part of the energy needed and storage can do a far better job.
June 6, 2025 at 5:56 PM
Reposted by Wolfgang Feist
Largest UK #Passivhaus Building: Urbanest Battersea, Palmerston Court, #London

Three towering blocks rise from a single podium, making this the UK's largest single building certified to #Passivehouse

Type: Student accommodation
No. of units: 199 (853 bedrooms)
TFA: 17,964 m2

#StudentLiving

3/5
June 2, 2025 at 5:00 PM
Reposted by Wolfgang Feist
Discover more about the UK title contenders on the horizon and how those 3 projects compare globally.

www.passivhaustrust....

Are you working on a gigantic #Passivhaus? Be sure to let us know all about it!

#MondayMotivation #SustainableBuildings

5/5
June 2, 2025 at 5:00 PM
Just to add: That is very easy to fix, even "after" the fact. Well, there are really good prefabricated solutions.

It illustrates, how small the rest-infiltration of a well designed passive house is. But also: That even a 'perfect' passive house isn't completely "tight" - & it does not need to be.
May 29, 2025 at 9:08 PM
Passive House Schools: There is already a lot of experience in several countries and it's really convincing: Best indoor air quality, very low operational cost. A good example from Darmstadt!
May 29, 2025 at 3:50 PM
Make these less expensive: Yes, definitely can be done. Why? Lower peak power demand, less expensive systems & add the reduced cost of operation. There are even more advantages: Longer lifespan. Better Indoor Air.

What's the advantage for gov? - Regional value chain - less environmental damage
May 29, 2025 at 2:52 PM
For passive house, you can use ANY type for heat distribution & it has all been successfully done (also with heat pumps for generation). If you use floor heating, it could be integrated in the concrete slab & also only in parts of the floor. But: radiators & air heating will work as well.
May 28, 2025 at 2:46 PM