Skip to main content

- What is Passive Building?
  Your passive building questions, answered
  
  Passive Building
  
  Passive Building Principles
  
  Passive Building FAQs
  
  A Better Way to Zero
  
  Passive Building Foundations Training
- Sectors
  Passive isn't just for houses
  
  Single-Family
  
  Multifamily
  
  Office Buildings
  
  Schools
  
  Other Non-Residential
- Projects
  Phius Certified Projects are the most energy efficient and comfortable buildings in the world
  Find a Project
  
  Project Certification
  
  Submit a Project
  
  Certification Review Queue
- Products
  Phius Certified Products are guaranteed to perform to passive standards
  View Products
  
  Product Certification Overview
  
  Window Certification
  
  Panel Certification
- Professionals
  Phius Certified Professionals are on the cutting edge of high-performance building
  Find a Professional
  
  Phius Certified Consultant (CPHC®)
  
  Phius Certified Builder (CPHB)
  
  Phius Certified Rater
  
  Phius Certified Verifier
  
  Phius Associate
  
  Maintain Credentials
Our Approach
- New Construction
  Phius CORE and Phius ZERO provide the path for constructing a Phius building from the ground up.
- Retrofit
  Upgrade existing buildings to Phius standards using Phius CORE REVIVE and Phius ZERO REVIVE.
- Commercial
  Phius standards aren't just for residential buildings. Phius CORE COMM and Phius ZERO COMM can be applied to any non-residential building.
Categories
August 29 – 30

Phius Certified Rater Training | August 2024
Phius Raters are in high demand -- get certified!
Upcoming Sessions
- Intro to THERM | July 2024
  July 29 – 31
- July Member Office Hours - Project Questions
  July 30
- Member Policy Webinar: IRA and Phius
  August 6
- Phius Certified Builder Training and Certification Exam | August 2024
  August 12 – 23
- Policy Work
  Promoting policies designed to grow passive building
  Policy Database
  
  Incentives
  
  Codes
  
  Qualified Allocation Plans
  
  Cost Data
- Tools and Support
  Providing the tools you need to create healthier buildings
  Resource Library
  
  Certification Support
  
  Calculators and Protocols
  
  Feasibility Study
  
  WUFI Passive Design Tool
  
  Climate Data
  
  Quality Assurance
  
  Tech Corner

Project 1658

Bush School - Upper School South

Seattle, Washington

Building Function

School / Education
Project Type

New Construction
ASHRAE Climate Zone

4C - Mixed - Marine
Construction Completion

2019
Status

Final Certified
INT. Conditioned Floor Area

19099 sq. ft.

Core Project Team

Phius CPHC (Secondary)

David Mead
Phius Certified Verifier

Chris Edlin
Phius CPHC (Lead)

Daniel Luddy
Project Submitter

Daniel Luddy

Project Information

- Building Function
  
  School / Education
- Project Type
  
  New Construction
- Construction Type
  
  Wood Frame
- Number of Units
  
  1
- Number of Stories
  
  3
- Program Version
  
  PHIUS+ 2018 Source Zero
- ADD'L Certification Badges
  
  PHIUS+ Source Zero
- All Electric
  
  Yes
- INT. Conditioned Floor Area
  
  19099 sq. ft.
- Status
  
  Final Certified
- Design Certification
  
  August 22, 2022
- Final Certification
  
  July 20, 2023
- Construction Completion
  
  2019
- ASHRAE Climate Zone
  
  4C - Mixed - Marine
- Region
  
  Northwest

Performance

- Annual Heating Demand
  
  4.34
- Annual Cooling Demand
  
  0.6
- Peak Heating Load
  
  4.3
- Peak Cooling Load
  
  1.28
- Site Energy Use Index (EUI)
  
  21.86
- Site Energy Use Index (w/Renewables)
  
  -7.9
- Compliance Software
  
  WUFI Passive
- Source Energy (Non-Residential)
  
  61.22
- Air Tightness (per enclosure area)
  
  0.047

Enclosure

- Wall 1 Type
  
  Framing with Continuous Insulation
- Wall 1 R-Value
  
  24
- Wall 1 Insulation Type
  
  Fiberglass, Mineral Wool (Cavity)
- Wall 2 Type
  
  Framing with Continuous Insulation
- Wall 2 R-Value
  
  25
- Wall 2 Insulation Type
  
  Fiberglass, Mineral Wool (Cavity)
- Wall 3 Type
  
  Framing with Continuous Insulation
- Wall 3 R-Value
  
  21
- Wall 3 Insulation Type
  
  EPS, Fiberglass
- Roof 1 Type
  
  Vented Below Deck
- Roof 1 R-Value
  
  55
- Roof 1 Insulation Type
  
  XPS
- Roof 2 Type
  
  Vented Above Deck
- Roof 2 R-Value
  
  66
- Roof 2 Insulation Type
  
  XPS
- Roof 3 Type
  
  Vented Below Deck
- Roof 3 R-Value
  
  68
- Roof 3 Insulation Type
  
  XPS
- Floor Type 1
  
  Basement Slab
- Floor 1 R-Value
  
  8
- Floor 1 Insulation Type
  
  EPS
- Window Product Name 1
  
  Operable
- Whole Window U-Value 1
  
  0.17
- Window Frame Material 1
  
  Fiberglass
- Window Glazing SHGC 1
  
  0.25
- Window Product Name 2
  
  Fixed
- Whole Window U-Value 2
  
  0.16
- Window Frame Material 2
  
  Fiberglass
- Window Glazing SHGC 2
  
  0.25
- Window Product Name 3
  
  Storefront Fixed
- Whole Window U-Value 3
  
  0.4
- Window Frame Material 3
  
  Aluminum
- Window Glazing SHGC 3
  
  0.24
- Door Product Name
  
  Storefront Glazed Doors
- Whole Door U-Value
  
  0.57
- Door Frame Material
  
  Aluminum

Systems & Equipment

- Renewable Energy Type(s)
  
  On-Site PV
- Renewable Energy Annual Production
  
  150383