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Project 2003

Dogwood Passive House

Olympia, Washington

Building Function

Single-Family
Project Type

New Construction
ASHRAE Climate Zone

4C - Mixed - Marine
Status

Final Certified
INT. Conditioned Floor Area

1593 sq. ft.

Core Project Team

Phius Certified Rater

Cybil Tribie
Builder

Dave Canfield
Phius CPHC (Lead)

Emily Nelson
Phius CPHB

Roussa Cassel
Project Submitter

Emily Nelson

Project Information

- Architecture Planning
  
  The Artisans Group, Inc.
- Building Owner
  
  Roussa Cassel and Dave Canfield
- Construction Company
  
  Collective Carpentry
- Building Function
  
  Single-Family
- Project Type
  
  New Construction
- Number of Units
  
  1
- Number of Stories
  
  2
- Program Version
  
  Phius CORE Prescriptive 2021
- All Electric
  
  Yes
- INT. Conditioned Floor Area
  
  1593 sq. ft.
- Status
  
  Final Certified
- Design Certification
  
  May 9, 2023
- Final Certification
  
  November 21, 2023
- ASHRAE Climate Zone
  
  4C - Mixed - Marine
- Region
  
  Northwest

Performance

- Compliance Software
  
  Prescriptive Checklist
- HERS Rating
  
  -3
- Air Tightness (per enclosure area)
  
  0.039

Enclosure

- Window to Wall Ratio
  
  19
- Wall 1 Type
  
  Framing with Continuous Insulation
- Wall 1 R-Value
  
  46
- Wall 1 Insulation Type
  
  Cellulose, GPS
- Roof 1 Type
  
  Vented Above Deck
- Roof 1 R-Value
  
  58
- Roof 1 Insulation Type
  
  Cellulose, Other
- Roof 2 Type
  
  Unvented
- Roof 2 R-Value
  
  65
- Roof 2 Insulation Type
  
  EPS, Cellulose
- Floor Type 1
  
  Slab on Grade
- Floor 1 R-Value
  
  16
- Floor 1 Insulation Type
  
  Other
- Window Manufacturer 1
  
  Wythe Windows
- Window Product Name 1
  
  The Styuvesant 76MD Dual Action (Tilt/Turn) Window
- Whole Window U-Value 1
  
  0.15
- Window Frame Material 1
  
  Vinyl
- Window Glazing SHGC 1
  
  0.23
- Door Manufacturer
  
  CODEL Entry Systems
- Door Product Name
  
  6-8 Fiberglass Flush
- Whole Door U-Value
  
  0.16
- Door Frame Material
  
  Fiberglass

Systems & Equipment

- Ventilation System Manufacturer
  
  Zehnder
- Ventilation System Product Name
  
  Zehnder ComfoAir-Q450 TR
- Ventilation System Layout
  
  Centralized
- Ventilation System Type
  
  HRV
- Sensible Recovery Efficiency
  
  84
- Latent Recovery Efficiency
  
  34
- Measured Ventilation Fan Efficiency
  
  0.34
- Heating System Manufacturer
  
  Daikin
- Heating System Product Name
  
  Daikin 2MXS18NMV
- Heating System Type
  
  Air Source Heat Pump
- Heating System Performance (COP)
  
  3.34
- Heating System Performance (% Efficiency)
  
  8.2
- Cooling System Manufacturer
  
  Daikin
- Cooling System Product Name
  
  Daikin 2MXS18NMV
- Cooling System Type
  
  Air Source Heat Pump
- Cooling System Rating
  
  EER
- Cooling System Performance (EER)
  
  9.5
- Hot Water System Manufacturer
  
  Sanden
- Hot Water System Product Name
  
  V2-Sanden CO2 GS3-45HPA
- Hot Water System Layout
  
  Centralized
- Hot Water System Type
  
  Split Heat Pump Water Heater
- Hot Water System Rating
  
  Uniform Energy Factor (UEF)
- Hot Water System Performance Rating
  
  4.44
- Range Hood Type
  
  Exhaust
- Dryer Type
  
  Non-Vented