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Project 2436

Randall Road Residence

ZeroEnergy Design

Stow, Massachusetts

Building Function

Single-Family
Project Type

New Construction
ASHRAE Climate Zone

5A - Cool - Humid
Status

Certified
INT. Conditioned Floor Area

4417 ft²

Core Project Team

Phius CPHB

Milo Stella
Phius Certified Rater

Michael Browne
Phius CPHC (Lead)

Jordan Goldman
Project Submitter

Jordan Goldman

Project Information

- Architecture Planning
  
  ZeroEnergy Design
- Building Owner
  
  Chip and Marie Fein
- Mechanical Systems Designer
  
  ZeroEnergy Design
- Construction Company
  
  Star Contracting Company
- Building Function
  
  Single-Family
- Project Type
  
  New Construction
- Number of Units
  
  1
- Number of Stories
  
  2
- Program Version
  
  Phius ZERO 2021
- All Electric
  
  Yes
- INT. Conditioned Floor Area
  
  4417 ft²
- Status
  
  Certified
- Design Certification
  
  August 31, 2023
- Final Certification
  
  August 29, 2025
- ASHRAE Climate Zone
  
  5A - Cool - Humid
- Region
  
  Northeast

Performance

- Annual Heating Demand
  
  9.36 kBTU/ft².yr
- Annual Cooling Demand
  
  2.14 kBTU/ft².yr
- Peak Heating Load
  
  5.21 kBTU/ft².yr
- Peak Cooling Load
  
  1.73 kBTU/ft².yr
- Site Energy Use Index (EUI)
  
  18.33 kBTU/ft².yr
- Site Energy Use Index (w/Renewables)
  
  -4.58 kBTU/ft².yr
- Compliance Software
  
  WUFI Passive
- Source Energy (Residential)
  
  10678 kWh/person.yr
- HERS Rating
  
  38
- HERS Rating w/Renewables
  
  -30
- Air Tightness (per enclosure area)
  
  0.038 CFM50/ft²

Enclosure

- Wall 1 R-Value
  
  34
- Wall 1 Insulation Type
  
  Cellulose, Fiberboard
- Wall 2 Type
  
  Insulated Concrete Form (ICF)
- Wall 2 R-Value
  
  35
- Wall 2 Insulation Type
  
  Fiberglass, PolyIso
- Wall 3 Type
  
  Insulated Concrete Form (ICF)
- Wall 3 R-Value
  
  23
- Wall 3 Insulation Type
  
  Fiberglass, PolyIso
- Roof 1 Type
  
  Vented Below Deck
- Roof 1 R-Value
  
  60
- Roof 1 Insulation Type
  
  Cellulose
- Floor Type 1
  
  Basement Slab
- Floor 1 R-Value
  
  27
- Floor 1 Insulation Type
  
  EPS
- Window Manufacturer 1
  
  Zola
- Window Product Name 1
  
  Makrowin MW88 - Fixed
- Whole Window U-Value 1
  
  0.15
- Window Frame Material 1
  
  Wood
- Window Glazing SHGC 1
  
  0.53
- Window Product Name 2
  
  Makrowin MW88 - Operable
- Whole Window U-Value 2
  
  0.16
- Window Frame Material 2
  
  Wood
- Window Glazing SHGC 2
  
  0.53

Systems & Equipment

- Ventilation System Manufacturer
  
  Zehnder
- Measured Ventilation Fan Efficiency
  
  0.43 W/cfm
- Heating System Manufacturer
  
  Mitsubishi
- Cooling System Manufacturer
  
  Mitsubishi
- Hot Water System Manufacturer
  
  Ruud
- Renewable Energy Type(s)
  
  On-Site PV
- Renewable Energy Annual Production
  
  29662 kWh/yr
- Renewable Energy System Size
  
  14.8kW