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
May 21

Passive Building Foundations Training Webinar
Learn more about the new Passive Building Foundations Training
Upcoming Sessions
- Phius Certified Builder Exam | April 2024
  May 3 – June 2
- Humid Climate Conference Day 1
  May 6
- Humid Climate Conference Day 1
  May 7
- Phius Certified Builder Training and Certification Exam | May 2024
  May 13 – 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 1648

Red Clay Creek

Kennett Square, Pennsylvania

Building Function

Single-Family
Project Type

New Construction
ASHRAE Climate Zone

4A - Mixed - Humid
Status

Final Certified
INT. Conditioned Floor Area

2898 sq. ft.

Core Project Team

Phius Certified Rater

David Berg
Phius CPHC (Secondary)

Jeremy Avellino
Phius CPHC (Lead)

Ilka Cassidy
Project Submitter

Ilka Cassidy
Primary Reviewer

Andrés Pinzón

Project Information

- Construction Company
  
  Hugh Lofting High Performance Building/ Holzraum System LLC
- Building Function
  
  Single-Family
- Project Type
  
  New Construction
- Construction Type
  
  Wood Frame
- Number of Units
  
  1
- Program Version
  
  PHIUS+ 2018 Source Zero
- ADD'L Certification Badges
  
  PHIUS+ Source Zero
- INT. Conditioned Floor Area
  
  2898 sq. ft.
- ADD'L Certifications
  
  DOE ZERH, ENERGY STAR for Homes, EPA Indoor airPLUS
- Status
  
  Final Certified
- Design Certification
  
  November 6, 2019
- Final Certification
  
  December 23, 2021
- ASHRAE Climate Zone
  
  4A - Mixed - Humid
- Region
  
  Northeast

Performance

- Annual Heating Demand
  
  6.16
- Annual Cooling Demand
  
  2.36
- Peak Heating Load
  
  4.43
- Peak Cooling Load
  
  1.81
- Site Energy Use Index (EUI)
  
  10.64
- Site Energy Use Index (w/Renewables)
  
  -3.2
- Compliance Software
  
  WUFI Passive
- Source Energy (Residential)
  
  6327
- Air Tightness (per enclosure area)
  
  0.049

Enclosure

- Wall 1 Type
  
  Framing with Continuous Insulation
- Wall 1 R-Value
  
  22
- Wall 1 Insulation Type
  
  EPS
- Wall 2 Type
  
  Framing with Continuous Insulation
- Wall 2 R-Value
  
  33
- Wall 2 Insulation Type
  
  Cellulose, Other
- Roof 1 Type
  
  Vented Above Deck
- Roof 1 R-Value
  
  47
- Roof 1 Insulation Type
  
  Cellulose, Other
- Floor Type 1
  
  Basement Slab
- Floor 1 R-Value
  
  24
- Floor 1 Insulation Type
  
  Mineral Wool
- Window Manufacturer 1
  
  Zola
- Window Product Name 1
  
  Thermo uPVC Fixed
- Whole Window U-Value 1
  
  0.13
- Window Frame Material 1
  
  Unplasticized Polyvinyl Chloride (uPVC)
- Window Glazing SHGC 1
  
  0.5
- Window Manufacturer 2
  
  Zola
- Window Product Name 2
  
  Thermo uPVC Operable t&t
- Whole Window U-Value 2
  
  0.14
- Window Frame Material 2
  
  Unplasticized Polyvinyl Chloride (uPVC)
- Window Glazing SHGC 2
  
  0.5
- Window Manufacturer 3
  
  Zola
- Window Product Name 3
  
  Thermo uPVC lift and slide door
- Whole Window U-Value 3
  
  0.17
- Window Frame Material 3
  
  Unplasticized Polyvinyl Chloride (uPVC)
- Window Glazing SHGC 3
  
  0.5

Systems & Equipment

- Measured Ventilation Fan Efficiency
  
  0.4