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December 1 – January 16

Phius Certified Trades Professional - Enclosure Specialist Training | December 2025 & January 2026 | Portland, OR
Become a Phius Enclosure Specialist!
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  January 13
- Phius Certified Consultant Training & Certification Exam | January 2026
  January 20 – 30
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  January 20
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Project 1856

Twin Lakes Landing Phase 2 - Building 1

Dykeman

Marysville, Washington

Building Function

Multifamily
Project Type

New Construction
ASHRAE Climate Zone

4C - Mixed - Marine
Construction Completion

2021
Status

Certified
INT. Conditioned Floor Area

11455 ft²

Core Project Team

Phius Certified Verifier

Diego Guimet
Phius CPHC (Lead)

Dan Whitmore
Project Submitter

Dan Whitmore

Project Information

- Architecture Planning
  
  Dykeman
- Building Owner
  
  Housing Hope
- Mechanical Systems Designer
  
  Ecotope
- Construction Company
  
  Kirtley Cole Associates LLC
- Building Function
  
  Multifamily
- Project Type
  
  New Construction
- Construction Type
  
  Wood Frame
- Number of Units
  
  15
- Number of Stories
  
  3
- Program Version
  
  Phius CORE 2021
- All Electric
  
  Yes
- INT. Conditioned Floor Area
  
  11455 ft²
- Status
  
  Certified
- Design Certification
  
  August 29, 2022
- Final Certification
  
  November 2, 2023
- Construction Completion
  
  2021
- ASHRAE Climate Zone
  
  4C - Mixed - Marine
- Region
  
  Northwest

Performance

- Annual Heating Demand
  
  6.21 kBTU/ft².yr
- Annual Cooling Demand
  
  0.02 kBTU/ft².yr
- Peak Heating Load
  
  4.13 kBTU/ft².yr
- Peak Cooling Load
  
  0.22 kBTU/ft².yr
- Site Energy Use Index (EUI)
  
  21.6 kBTU/ft².yr
- Compliance Software
  
  WUFI Passive
- Source Energy (Residential)
  
  3183 kWh/person.yr
- Air Tightness (per enclosure area)
  
  0.055 CFM50/ft²
- Average Compartmentalization
  
  0.18 CFM50/ft²

Enclosure

- Wall 1 Type
  
  Framing with Continuous Insulation
- Wall 1 R-Value
  
  28
- Wall 1 Insulation Type
  
  Fiberglass
- Wall 2 Type
  
  Framing with Continuous Insulation
- Wall 2 R-Value
  
  28
- Wall 2 Insulation Type
  
  Fiberglass, Mineral Wool (Cavity)
- Wall 3 Type
  
  Other
- Wall 3 R-Value
  
  6
- Wall 3 Insulation Type
  
  Other
- Roof 1 Type
  
  Vented Below Deck
- Roof 1 R-Value
  
  66
- Roof 1 Insulation Type
  
  Cellulose
- Floor Type 1
  
  Slab on Grade
- Floor 1 R-Value
  
  20
- Floor 1 Insulation Type
  
  EPS
- Floor Type 2
  
  Overhang Floor
- Floor 2 R-Value
  
  39
- Floor 2 Insulation Type
  
  Fiberglass
- Window Manufacturer 1
  
  Euroline
- Window Product Name 1
  
  1400 Casement (Rehau)
- Whole Window U-Value 1
  
  0.17
- Window Frame Material 1
  
  Other
- Window Glazing SHGC 1
  
  0.32
- Window Manufacturer 2
  
  Euroline
- Window Product Name 2
  
  1400 Picture (Rehau)
- Whole Window U-Value 2
  
  0.15
- Window Frame Material 2
  
  Other
- Window Glazing SHGC 2
  
  0.32

Systems & Equipment

- Ventilation System Layout
  
  De-Centralized
- Ventilation System Type
  
  ERV
- Sensible Recovery Efficiency
  
  83%
- Heating System Type
  
  Electric Resistance
- Hot Water System Layout
  
  Centralized
- Hot Water System Type
  
  Split Heat Pump Water Heater