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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18 Answers

Detail and Insulation Review

We are looking to do REMOTE wall construction on our new house located in S.E. Michigan. Currently drawn as 2" exterior rigid foam, but 3" will probably be the the correct amount to use. I plan to use Bituthene as the WRB, not sure if anyone can recommend any alternatives? I really like Bituthene's low perms and low cost, but I assume that asphalt products aren't all that green....

Asked By Eric Burhop | Jul 31 13
5 Answers

Blower door test cost

Not including the cost of the blower door test itself, I am looking for a ROM materials and labor cost per ft-2 to seal up a conventional 2 x 4 framed house, sheathed, sided, windows, doors, stud bays, lid, etc.....?

If someone that has done it can estimate labor hours to get to 5-7 ACH-@ 50 I can factor my local labor rate. Please include the trail and errors, IR and smoke back and forth, etc. Or if you sealed up some ft-2 home let me know how long it took...


Asked By Terry Lee | Aug 20 14
0 Answers

The Passive House Alliance Vermont chapter would like to invite you to attend the 2nd Annual 2014 Passive House Symposium.

The Passive House Alliance Vermont chapter would like to invite you to attend the 2nd Annual 2014 Passive House Symposium. The one day event will be held at Vermont Technical College in Randolph VT, on Thursday, October 2nd.
We now have a Pay Online Link !! For Attendees @ 50$ for the day Lunch included and 25$ for PHAUS and BPPA-VT members. Below
- Key Note Guest Speaker – VT Lieutenant Governor Phil Scott.
--Report update on MLS listings, Appraisals and Financing for High Performance/ Passive House buildings by Jeff Gephart from Efficiency Vermont.

Asked By Chris Miksic | Aug 21 14
4 Answers

Composting toilet in a Passive House?

This is probably only a hypothetical question as I doubt I could talk my wife into a composting toilet but…If we have a tight home with balanced ventilation, and if we had a composting toilet that has a small 5W fan continuously exhausting air - how would we provide make-up air?

Asked By Scott Tenney | Jul 24 14
8 Answers

Another Hole(s) in the... Wall

My Northern zone 5a home can't be a Passive House (PH) because it was built in the 50's. But I'd guess that imitating PH practices where possible as projects are done will help the house be the best it can without a gut rehab.

Asked By Gordon B | Jun 23 14
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
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