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Project 1591

Larson Passive House

Indianola, Iowa

Building Function

Single-Family
Project Type

New Construction
ASHRAE Climate Zone

5A - Cool - Humid
Status

Final Certified
INT. Conditioned Floor Area

2112 sq. ft.

Core Project Team

Phius CPHB

Daniel Marine
Phius Certified Rater

John David Holtzclaw
Phius CPHC (Lead)

Michael Nolan
Project Submitter

Michael Nolan
Primary Reviewer

James Ortega

Project Information

- Building Owner
  
  Jessie and Josh Larson
- Construction Company
  
  Oak Tree Homes
- Building Function
  
  Single-Family
- Project Type
  
  New Construction
- Construction Type
  
  Wood Frame
- Number of Units
  
  1
- Program Version
  
  PHIUS+ 2015
- INT. Conditioned Floor Area
  
  2112 sq. ft.
- ADD'L Certifications
  
  DOE ZERH, ENERGY STAR for Homes, EPA Indoor airPLUS
- Status
  
  Final Certified
- Design Certification
  
  July 3, 2019
- Final Certification
  
  June 12, 2020
- ASHRAE Climate Zone
  
  5A - Cool - Humid
- Region
  
  Midwest

Performance

- Annual Heating Demand
  
  4.22
- Annual Cooling Demand
  
  4.41
- Peak Heating Load
  
  3.62
- Peak Cooling Load
  
  2.13
- Site Energy Use Index (EUI)
  
  13.96
- Compliance Software
  
  WUFI Passive
- Source Energy (Residential)
  
  5461
- Air Tightness (per enclosure area)
  
  0.023

Enclosure

- Wall 1 Type
  
  Framing with Continuous Insulation
- Wall 1 R-Value
  
  58
- Wall 1 Insulation Type
  
  Cellulose, Fiberglass
- Roof 1 Type
  
  Vented Above Deck
- Roof 1 R-Value
  
  95
- Roof 1 Insulation Type
  
  Cellulose
- Floor Type 1
  
  Slab on Grade
- Floor 1 R-Value
  
  24
- Floor 1 Insulation Type
  
  EPS
- Window Manufacturer 1
  
  Schuco
- Window Product Name 1
  
  MD82 Living Operable
- Whole Window U-Value 1
  
  0.16
- Window Frame Material 1
  
  Unplasticized Polyvinyl Chloride (uPVC)
- Window Glazing SHGC 1
  
  0.54
- Window Product Name 2
  
  Operable Window
- Whole Window U-Value 2
  
  0.16
- Window Glazing SHGC 2
  
  0.54
- Window Product Name 3
  
  Fixed Window
- Whole Window U-Value 3
  
  0.15
- Window Glazing SHGC 3
  
  0.54
- Door Product Name
  
  Door with Full Glass
- Whole Door U-Value
  
  0.18

Systems & Equipment

- Measured Ventilation Fan Efficiency
  
  0.4