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Utah Passive House (Mill Creek, Utah, USA)

Credits: ©2009 Our Passive House

There's a website called Our Passive House, where the owners are documenting the design and construction of the first Passive House in Utah. The owners are on Twitter @ourpassivehouse. Designed by Brach Design, Utah's first certified Passive House consultant, this energy-efficient home fits in to the context of the established neighborhood where its two-door style mirrors a look that's already common with many existing homes. When completed, the 3,000 square-foot home should show high energy performance numbers. It features passive design, photovoltaics, solar hot water, super insulation and many other design ideas.


Utah Passive House (Millcreek, Utah, USA)

©2009 Brach Design

Our Passive House by the Numbers:
heating degree days - 4838

cooling degree days  - 1278

finished floor area - 180 sq. m, 3000 sq. ft

foundation continuous spread footing, insulated with 2" high density EPS foam

basement wall - ICF with interior 2x4 wall, insulated with high density fiberglass

wall framing - 12" wide double stud wall, 24" on center

wall insulation - 12" blown in high density fiberglass

roof framing - prefabricated trusses

roof insulation - 24" blown in high density fiberglass

windows - foam-filled fiberglass frames, double pane glazing with suspended film and eco-spacers, argon/krypton fill, .51 SHGC south, .31 N, E, W; average overall total unit U-value : .18 Btu/hr ft2 =1.02 W/(m2K)

ventilation system - 95% sensible effectiveness ERV

heating system - 98% efficient gas tankless water heater with low temperature radiant tubing in slabs; domestic hot water same

cooling system -  40 SEER evaporative cooler

active system to become net zero
source energy 3.5 kW PV system

site energy 6.5 kW PV system


  In Defense of the Passive House Standard (334 kb)

  PassivHaus Becomes Active—Further Commentary on PassivHaus (196 kb)

  The Passive House (Passivhaus) Standard—A comparison to other cold climate low-energy houses (531 kb)

  Illinois Passiv Haus (USA) (549 kb)


Passive House (USA)

Passive House Institute (Germany)