PHIUSlogo.jpg2011 PHIUS North American Passive House Conference

Silver Spring, Maryland

Main Conference Proceedings: October 28-29

Tentative Schedule

View Conference Schedule as a Graphical Grid

Check back for updates. In the meantime, here's a snapshot of what to expect. You might also want to check out presentations from last year's conference in Portland, Ore.

Friday, October 28-29

Gather at the Silver Spring Civic Building for coffee and light breakfast each morning, 7:30-8:30am

Friday: Opening Plenary Sessions, 8.30am - 12.00pm, Great Hall

Keynote Speakers:

Jens Laustsen

is a an international energy efficiency policy consultant. He formerly served as a senior energy policy analyst at the International Energy Agency and was responsible for the IEA recommendations on energy efficiency in buildings and other G8 related buildings work.

Sam Rashkin

is Chief Architect, U.S. DOE Building Technologies Program. He formerly led the ENERGY STAR for Homes program and is a leader in U.S. energy policy. 

Marc Rosenbaum, P.E.

is the principal and founder of Energysmiths, a CPHC, and a 29-year veteran of high-performing building design. His work has been recognized nationally by ASHRAE, AIA, EEBA, and NESEA.

Breakout tracks

  • Implementation and design across climates: Case studies
  • Components: Technical Discussion and Real-World Experience
  • Passive House Myth Buster Lab: Debunking the Bad Information
  • Policy, Economics, Affordability: Panel discussions


Scheduled breakout topics include:

Climates/Case Studies

  • The Four-Square home in nearby Bethesda, Maryland
  • Massachusetts Home fully certifiedTexas's FirstPH study for southern California
  • Colorado's first strawbale PH
  • Worldwide climate PH study:High-Rise PH project in China
  • Office and dormitory projects
  • Retrofit successes


  • The latest performance numbers on the Louisiana Passive House
  • Performance data on the O'Neill House retrofit
  • Point source heating/cooling in Vermont: Measure performance
  • High R-wall hygrothermal performance considerations for various climates
  • Low flow space conditioning systems - measured results on air and temperature distribution  
  • BioHaus turns 5! Long-term measured performance
  • Moisture performance of a diffusion open wall in Fairbanks, Alaska
  • Certification tips and drawing conventions
  • Quality Assurance and Quality Control
  • Air tightness strategy for multi-family
  • Heat pump hot water heaters in PH
  • PH HVAC for commercial


  • PHs only work in cold climates - comfort principle for the cooling climate
  • ERVs don't dehumidify - they manage humidity just right!
  • Houses need to breathe-NOT!


  • PH advances in code
  • Harmonization progress with other standards
  • Carbon neutrality and zero energy
  • Strategies for the new energy economy
  • Affordable funding strategies
  • Living in a Passive House
  • Marketing a Passive House


Outer Limits

  • Solar ready
  • Envisioning a new Passive House modeling future

Closing Plenary, Saturday, October 29

3:45pm - 4:30pm

Sunday, October 30


Tour of local PH projects: 9:00am to 1:00pm, box lunch provided

Optional, requires separate registraion

PHC 2011 Conference Schedule Grid

Friday Oct 28, Day One

6:30 7:30

T3 (Certified PHIUS Trainers) breakfast by invitation only (Location TBA)
Registration begins, coffee and breakfast at Civic Center

8:30 8:35

Prudence Ferreira, PHIUS - Welcome

8:35 8:55

Maryland State Senator Rob Garagiola, 15th District

8:55 9:40

Jens Laustsen - Governmental Strategies to Implement Passive Design and zero energy Strategies in Europe - conclusions for North American road map

9:40 9:45

Prudence Ferreira - MC Introduces next speaker

9:45 10:30

Marc Rosenbaum - The Passive House Standard for North America

10:30 10:45

Coffee and stretch

10:45 11:30

Sam Rashkin - Keynote: Do You Want to Dance? Builders Challenge and Passive House

11:30 11:45

Prep for lunch and exhibit time

11:45 1:00

Lunch and exhibit time

1:00 3:00

Track 1: Great Hall South

Climate Design

Track 2: Spring

Measured Performance

Track 3: Great Hall North

PH Myth Busters/Fact Check

Track 4: Ellsworth

Affordable Panel


Thorsten Chlupp

Cold climate PH-101 - Limitations to solutions for PH buildings in our cold northern regions. Lessons learned from building solar heated homes at Latitude 64

David Peabody/Dan Foley

The Bethesda Passive House, envelope and system for a mixed humid climate, Maryland

Graham Irwin

Passive House in Southern California: What does it take and what does it deliver?

Lois Arena

Evaluation of potential for moisture in high-R wall systems in cold climates

Dave Stecher

Low-flow ventilation fresh air heating and cooling delivery, distribution systems and monitored results

Thorsten Chlupp

"No feelings without the data" - moisture performance of diffusion open wall in Fairbanks Alaska

Jason Morosko

ERVs don't dehumidify - why they do dehumidify and how they manage the humidity in PH's in various climates just right

Prudence Ferreira

Houses need to breathe - NOT! Why airtight is necessary, the building science reasoning behind 0.6 ACH50 and subtle climate specific variations.

Alison Kwok/Walter Grondzik

PHs dont work in hot climates: Why the comfort principle holds true for the cooling climates

Moderator Linda Metropulos

Tim Eian/Philipp Gross (25 min)

TE Studio Synergy Theoretical Case Study -  Affordability redefined

Kent Adcock/Matt Fine (25 min)

Habitat's first planned Passive House townhouse development

Parsons New School (25 min)

Parsons Solar Decathlon House + Habitat duplex


Affordable Panel discussion (45 min)

3:00 3:30

Coffee and stretch

3:30 5:30

Track 1: Great Hall South

Climate Design: New/Retro Multi- Residential 

Track 2: Spring

Measured 2

Track 3: Great Hall North

Building Practice/Codes

Track 4: Ellsworth

Real World: Living in a Passive House


Jimena Serra

Passive House retrofit study for Carnegie Mellon 1950's dormitory, Pittsburgh, PA

Alan Gibson
Unity College dormitory under construction, Maine

Linda Wigington

Beyond 70%: Measured Results from the 1000 Home Challenge

Brennan Less

Measured performance of the certified PH retrofit in Sonoma, CA and a comparison to other low-energy retrofit approaches

Stephan Tanner, Edwin Dehler-Seter

Happy Birthday! BioHaus is five years old!

Peter Schneider

Monitored data for the Vermont Habitat home - temperature uniformity with point source conditioning

Sam Hagerman

Success in influencing code, progress in Oregon: Air admittance valve solutions and use of non-UL listed highly efficient mechanical systems

Katrin Klingenberg

Compatibility of Passive House ventilation and ASHRAE 62.2 requirements  report on the official interpretation request

Vic Weber

Passive House in local, state and national codes - successful strategies and reasons for failures  (Massachusetts, Baltimore, Oregon Reach Code, City of Oregon, IECC)

Homeowner Panel

Moderator Mike Knezovich

Introduction: Investment, additional up-front cost, comfort and power bills, resale - is it worth it?

Casey Shaw (10- 15 min)

Living in a PH in a mixed humid climate: Chapel Hill, NC

Nicholas Koch (10- 15 min)

What it means to live in a PH in Texas

Matt Beaton (10- 15 min)

Living in a PH in Massachusetts

Greg and Margaret Stanton (10-15 min)

Some of Illinois's first ever PH dwellers: Urbana IL

All (60 min)



Mid Atlantic PHA and National PHA reception. Details at conference.


[Invite only]  White paper Technical Committee work groups

8:00 Open

[Invite only] Dinner Technical Committee

Saturday Oct 29, Day Two


Breakfast/coffee at Civic Center

8:00 - 10:00


Track 1: Great Hall South

Climate Design/Retrofit Residential

Track 2: Ellsworth


Track 3: Spring 

Beyond Passive House!

Track 4: Great Hall North

International Policy Lessons and the Future of Passive House in North America



Tim Eian/Philipp Gross

MinnPHit--a retrofit project in Minnesota

Brian Fuentes

A Strawbale retrofit in Boulder, CO

Nichlas Koch

Retrofit of a 50s-era home in Austin, TX

Corey Saft, Eric Helton

Monitoring results from the Louisiana -  project analysis and conclusions in regards to latent loads

Russell Richman

Rain screens and radiation balances:
effects on the hygrothermal performance of walls in heating, mixed and cooling climates

Fay Raynor, Eric Horstman

Airtightness strategies in multi-family Passive House buildings during the planning phase

Michael Hughes

Zero Energy and Passive House

Thorsten Chlupp

Beyond Passiv Haus - Sustainable shelters in an unsustainable world

Bruce Sullivan

Quality assurance programs for passive design standards, sustainability, water efficiency, zero energy, carbon neutrality and a new consumer rating: the EPS score

Moderator: Jens Laustsen

Introduction of the topic (15-20 min): Case study on implementation strategies from a few selected European countries, lessons learned

Panelists: Ludwig Rongen, Germany, Jimena Serra, Peru;  Tex McLeod, Canada; Stephan Tanner, Switzerland

International Roundtable work session:

-international interrelations to harmonize passive design standards 

- localizedimplementation strategies: different climate and culture conditions

10:00- 10:15

Coffee Break


Track 1: Spring Room

Climate Design New/Multi Res/Com

Track 2: Great Hall South

Mechanical Systems

Track 3: Great Hall North

Policy Panel

Track 4

Last Call for Exhibit Hall


Ludwig Rongen

Five-project climate
study -  worldwide
including high-rise
development in China

Natalie Leonard

Office in Kentville,
Nova Scotia

Graham Wright

Heat Pump Hot Water heaters in PHs: Feasibility study for various climates

Tex McLeod

Special considerations for heat exchange cores in very cold humid climates to assure performance and durability

Adam Cohen

HVAC design for
Malcomb Rosenberg
Center for Jewish
Studies, VA

The role of government in forwarding efficiency, Introduction by
Intro: Jeff Harris of the Alliance to Save Energy (15 min)

Moderator  Jens Laustsen

Sam Rashkin, Matt Beaton, Ellen Vaughn, Eric Mucklow,  Bill Swietlik

(1:40 min):
National Roundtable work session:
- Potential impact of Passive design standards that are broadly implemented 

- Policy Strategies currently in place
- Planned Strategies
- Scenarios for a new Energy Econom

Exhibitors pack up after lunch Saturday, so take this opportunity to visit their displays. 


Lunch, Manufacturer exhibit, poster sessions

1:30 3:30

Track 1: Great Hall South

Climate Design & NewRetrofit Residential 2

Track 2: Spring Room


Track 3: Ellsworth Room

Builder's Hootenany

Track 4: Great Hall North

Outer Limits


Alex Lukachko

Using the perfect
enclosure approach to
achieve Passive House
insulation and airtightness goals -  a retrofit case study

Paul Panish

The Beaton Home, Massachusetts

J.B. Clancy
Lessons learned from measured performance in VT - design solutions to increase thermal comfort and decrease overheating potential

Ryan Abendroth

Certification process of the VertDesign Project in Ottawa; very cold insolation driven climate of Canada - post occupancy evaluation, conclusions and lessons learned for QAQC

Graham Irwin

Keeping it cool - Shading measurements & calculations for PHPP

John Semmelhack

Quality Assurance protocol for Passive Designs under PHIUS+ Certification

Moderator TBC

Intro: First Builders Training planned for December  Builders Ed for PH: What is needed?

Panelists: Sam Hagerman OR, Adam Cohen, VA;Thorsten Chlupp, AK; Nicholas Koch, T;, Natalie Leonard, Nova Scotia Canada; Chris Senior, NC; Rick Milburn, CA

Eric Mucklow

PH and the Army  implementation strategies and planning for the future

Tex McLeod

Our Roots are showing -  from the Saskatchewan House to the Toller House as well as lessons learned along the way, R2000 and solar ready

Achilles Karagiozis

WUFI plus - Vision for a new modeling era for North American Passive Designs


Coffee and stretch


Ending Plenary

Prudence Ferreira: Conclusions, Outlook and Announcements  

Prudence Ferreira: Brief presentation Summary of PH status in the US on the road to Main Street