This is the lecture I gave at the 2015 Better Business Better Buildings conference at Wisconsin Dells, Wisconsin. It is a primer on the Passive House building energy standard and its application in new construction and retrofit in a cold North American climate zone.
Passive House in a Cold Climate @ BBBB 2015 WI Conference
Building Performance, Measured Results
Holistic Design for Sustainable Homes
• Understanding performance based design and the
Passive House building energy standard
• Applying the Passive House standard in a cold climate
• Systems and assemblies used in Passive House
projects in a cold climate
• Benefits of Passive House design in a cold climate
Passivhaus - Passive House
“A rigorous, voluntary building energy standard
focusing on highest energy efficiency and quality of life
at low operating cost.”
The Passive House Standard is the most rigorous building energy standard in the world. Consultants, projects or building components that have
obtained the right to carry the logo have committed themselves to design excellence and the Passive House energy performance criteria.
Think globally, build locally.
PASSIVE SOLAR DESIGN PASSIVE HOUSE
Building design concept Certified building energy standard
“Unlimited” energy use Energy per square foot and year targets
Solar heat gains (passive)
Solar heat gains (passive) and internal heat
Shading devices control solar heat gains
Shading devices and glazing control solar
Thermal mass absorbs and stores solar
Insulation and air tightness retain space
Time-release of space conditioning energy Heat-recovery ventilation
High temperature fluctuations Highest level of comfort
Passive Solar Design vs. Passive House
Energy per Square Foot and Year
Gas mileage for buildings.
≤ 4.75 kBtu/(sf yr)
Total energy used to heat or cool a building.
Space Conditioning Energy Targets
≤ 7.9 kBtu/(sf yr)
≤ 38 kBtu/(sf yr)
Total energy used to heat or cool a building.
Source Energy Targets
≤ 120 kWh/(m2
a) + ((QH - 15 kWh/(m2
a)) * 1.2)
≤ 3.17 Btu/(h sf)
Heating energy can be supplied through ventilation system.
Heating Load Target (suggested)
Measured with a blower door in the field.
• More than a prescriptive checklist
• Energy-modeled standards-based performance
• Field testing
• Third-party verification
Incrementalism > Leapfrog
Component > System
Design in a vacuum > Integrated design
HEAT RECOVERY VENITALTION
• living areas
Let in winter sun to heat and block summer sun to cool.
Significant insulation. High solar heat gain.
Minimize heat loss through the building enclosure.
External temperatures have no effect on internal
The consistent temperature of the ground passively pre-heats
ventilation air in the winter, and pre-cools and de-humidifies it in
The amount of energy it takes
to heat a Passive House
building can be compared to
the amount of heat a hair
• aux. spaces
& AIRTIGHT BUILDING ENVELOPE
ADVANCED WINDOWS AND DOORS
THERMAL BRIDGE-FREE DETAILS
ACTIVE SHADING = THERMOSTAT
11" EIFS 11" ICF
INSULATED DUCT O.D. 180MM (LUEFTA)
2" ARMAFLEX PIPE INSULATION
TAPE ICF TO DUCT,
SCHEDULED WALL FINISH
FILL GAPS WITH EXPANSION FOAM
TIGHT TO PIPE
WET FLASHING SYSTEM
12" PE PIPE, SLEEVE
CUT BACK FINISH
- STO W 260
- USE ONLY STO CERTIFIED SEALANT
- COLOR MATCH CAULK TO FACADE COLOR
1) INSTALL PIPE
2) INSTALL COMPRESSION TAPE
3) INSULATE TIGHT TO PIPE AND COMPRESS TAPE
4) INSTALL FINISH SYSTEM
Airtightness starts with the design.
Once designed, airtightness is easily managed on site.
TYPICAL WINDOW JAMB
Date printed: 1/24/13
NOTE: VERIFY DIMENSIONS, OBSERVE MANF. INSTRUCTIONS
TE STUDIO, LTD.
212 2ND ST. SE #222
MINNEAPOLIS, MN 55414
SEAL GAP WITH LOW EXPANSION FOAM
TAPE WBR TO WINDOW FRAME WITH SIGA
EPS INSULATION BLOCK, GLUE INTO
CAULK JAMB TO WINDOW, MATCH COLOR
WINDOW SET POINT
TAPE WINDOW FRAME TO WINDOW BUCK
WITH TAPE PER MANF.
EXTENSION JAMB, SITE
TAPE SHEATHING TO
WINDOW BUCK WITH
SIGA WIGLUV TAPE
3/4" PLYWOOD BUCK
ALUMINUM SILL PAN BELOW
WOOD WINDOW SILL BELOW
OPTIWIN ALU2WOOD WINDOW
5/4X6 EXTERIOR TRIM, TYP.
SCALE: 3" = 1'-0"
Proper install starts with a detailed design.
• Best certified and third party verified voluntary building standard in the industry
• Well-defined targets for heating and source energy, and airtightness
• Energy modeled = predictable performance
• 90% less heating demand than standard
• up to 66% or more overall energy savings than standard = energy independence
• Smallest carbon footprint in the industry
• Incredible comfort and health
• True value for owners and society
• Smart use of resources like building materials, energy, operating dollars
• Best insulation from an uncertain energy future
• Over 2 decades of proven performance
• Thousands of built projects all over the world
• Commercial and residential, new and retrofit
• Best starting point for net-zero, plus-energy and carbon-neutrality with smallest
• Global solution
• Best life cycle approach for fiscally and ecologically sustainable real estate