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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
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Project 2508

603 N Walnut

Bowerbird Design

Fayetteville, Arkansas

Building Function

Single-Family
Project Type

New Construction
ASHRAE Climate Zone

4A - Mixed - Humid
Status

Certified
INT. Conditioned Floor Area

1643 ft²

Core Project Team

Phius CPHC (Lead)

Cameron Caja
Project Submitter

Cameron Caja

Project Information

- Architecture Planning
  
  Bowerbird Design
- Building Owner
  
  Michael Cockram
- Mechanical Systems Designer
  
  N/A
- Additional Consultants
  
  Jon Fitzhugh (Home Energy Rx)
- Construction Company
  
  Munson Construction
- Building Function
  
  Single-Family
- Project Type
  
  New Construction
- Construction Type
  
  Wood-Frame
- Number of Units
  
  1
- Number of Stories
  
  2
- Program Version
  
  Phius CORE 2021
- All Electric
  
  Yes
- INT. Conditioned Floor Area
  
  1643 ft²
- Status
  
  Certified
- Design Certification
  
  October 30, 2024
- Final Certification
  
  January 31, 2025
- ASHRAE Climate Zone
  
  4A - Mixed - Humid
- Region
  
  Southeast

Performance

- Annual Heating Demand
  
  7.77 kBTU/ft².yr
- Annual Cooling Demand
  
  5.99 kBTU/ft².yr
- Peak Heating Load
  
  6.98 kBTU/ft².yr
- Peak Cooling Load
  
  2.6 kBTU/ft².yr
- Site Energy Use Index (EUI)
  
  17.12 kBTU/ft².yr
- Compliance Software
  
  WUFI Passive
- Source Energy (Residential)
  
  3709 kWh/person.yr
- Air Tightness (per enclosure area)
  
  0.044 CFM50/ft²

Enclosure

- Window Manufacturer 1
  
  Alpen
- Door Manufacturer
  
  Alpen

Systems & Equipment

- Ventilation System Manufacturer
  
  Broan
- Measured Ventilation Fan Efficiency
  
  0.46 W/cfm
- Heating System Manufacturer
  
  Daikin
- Heating System Type
  
  Air Source Heat Pump
- Cooling System Manufacturer
  
  Daikin
- Hot Water System Manufacturer
  
  AO Smith