Community: PassivHaus

PassivHaus is a standard of construction that yields extremely tight envelopes and low energy use.

The PassivHaus Institute is in Germany, but we have a branch here in North America as well, Passive House Institute US

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20 Answers

Gunter Lang conference in Montreal/ NY June 2014

I was lucky enough to attend to a conference given by Gunter Lang ing. of Austria in Montreal ,
which was organized by a newly forming Passivhaus Quebec movement which should be called : Maison Passive Quebec in collaboration with Quebec section of Canada Green Building Council.

I was probably one of the least "professionals" attending the event,
as most seemed to be either architects, manufacturing reps or building techs.

I knew very little of mr Lang other than reading his name a few times in the last 2-3 years,

Asked By Jin Kazama | Jun 21 14
0 Answers

Any CPHC's on board?


I am building my first passive house (currently designing it) in Indianapolis. I am PH certified builder, this will be my first passive house, and I am building it for myself. At this time, there are no certified passive houses in Indiana, and no CPHC’s. Are there any CPHC's on board here that would be interested in helping with the mechanical design and/or the CPHC certification? Or, do you know any you would recommend? I have a preliminary design I can send for review. Please feel free to call or email with any questions.



Asked By Allen Brown | Jun 12 14
1 Answer

An article on the Passivhaus standard for Chinese readers

There is a Chinese translation of the New York Times article on the Passivhaus standard ("The Passive House: Sealed for Freshness") posted on the web: Chinese version of Passivhaus article.

Interestingly, if you perform a back translation of the Chinese (back into English), "pretty good house" becomes "excellence in housing" and "Musings of an Energy Nerd" becomes "crazy energy thinking." That sounds about right.

Asked By Martin Holladay | May 29 14
7 Answers

Ventilation heating and cooling a PH

A Passive House requires a mechanical ventilation system and a heating/cooling system (Zone 5A).
What is the most cost effective method of achieving this? Since we will be putting in ductwork for the ERV/HRV system, it only makes sense to use this system to distribute warm and cool dry air, as opposed to having the ductwork and mini splits hanging on the wall. Also, we would have to condition (de-humidify or heat) the incoming air before it hits the heat exchanger anyway.

Asked By Steve Young | May 5 14
5 Answers

Venting a cathedral ceiling with 24" of cellulose

I am building a Passive House with a cathedral ceiling. I used parallel cord trusses with 27" between the top and bottom cords. I will put OSB on the bottom of the trusses as my air barrier and to hold the weight of 24" of loose fill cellulose insulation. I want to vent the roof, but the only baffles I've seen are made of thin vinyl, polystyrene or cardboard. I am afraid that they will be crushed by weight of the cellulose, which would eliminate the air channel. The roof pitch is 10:12 and is 20 feet long, so the baffles at the bottom will be under a lot of pressure.

Asked By Gerald Blycker | May 15 14
26 Answers

Any good heat recovery options for dryer and range hood exhaust?

I saw mention of this in another question/answer session, but would like to hear more.
Any way to use Heat Recovery Ventilator for dryer exhaust?-Thanks.

Asked By matt berges | Nov 26 10
2 Answers

Passive house and sunshine hours

is there a ballpark rule of thumb that spans different regions for the mean monthly sunshine or possible percent sunshine that is conducive to a favourable result in PHPP?

Asked By erik olofsson | Apr 20 14
6 Answers

PassivHaus barndominium in Minnesota

Hello everybody. First post -- just signed up. Great site. I live 30 minutes north of the Twin Cities and I'm looking at building a passiv type haus. I've found the land I'm building on (10 acres) and have somewhat of a plan for the building.

My wife and I want to build a barndominium. Looking at 50x70 total with 30x50 two stories and 40x50 shop. I have a general idea of how I want to build but alas I am newb and was hoping for some insight with the pros on this site.

Thanks again and any advice would be greatly appreciated.

Asked By Ryan Picha | Apr 1 14
2 Answers

Shocked and dismayed by PHI Closure!

Not a question... just voicing my sadness at the news of Dr Feist closing the PHI.

It seems that "Wolfgang has left the building" albeit for one that has no interior volume and therefore no heating demand. Below is a quote from the announcement in Building Green. At least there is good news.

"Founding Sphere House Institute
Feist is turning his attention to a new project, he says, involving solid cubes of rigid insulation he has dubbed Sphärhäuser. The Sphärhaus Institut (SHI) promotes three simple metrics for its cubic structures, explained Feist:

0.0 m2 interior space

Asked By albert rooks | Apr 1 14
1 Answer

Green or LEED builders in zone 5B (Central Arizona)?

I'm building a home in the central part of Arizona (Sedona) in about a year. I'm currently under contract with a designer who appears to have some comfort and knowledge with Green/LEED design and is excited to design my home around these principals. He is somewhat reluctant, however, to give me names of builders he would recommend. I suspect this is because he doesn't wish to alienate any with whom he regularly works.

Is there a listing of builders in this area that are experienced with Green/LEED building principals?

Asked By scott schroeder | Mar 31 14
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