Skip to main content

Project 1776

Acton Passive House

Acton, Massachusetts

Building Function

Single-Family
Project Type

New Construction
ASHRAE Climate Zone

5A - Cool - Humid
Construction Completion

2020
Status

Final Certified
INT. Conditioned Floor Area

1473 sq. ft.

Core Project Team

Phius Certified Rater

Michael Browne
Phius CPHC (Lead)

Jordan Goldman
Project Submitter

Jordan Goldman
Primary Reviewer

Al Mitchell

Project Information

- Construction Company
  
  Adams + Beasley Associates
- Building Function
  
  Single-Family
- Project Type
  
  New Construction
- Construction Type
  
  Wood Frame
- Number of Units
  
  1
- Number of Stories
  
  1
- Program Version
  
  PHIUS+ 2018 Source Zero
- ADD'L Certification Badges
  
  PHIUS+ Source Zero
- All Electric
  
  Yes
- INT. Conditioned Floor Area
  
  1473 sq. ft.
- ADD'L Certifications
  
  DOE ZERH, ENERGY STAR for Homes, EPA Indoor airPLUS
- Status
  
  Final Certified
- Design Certification
  
  November 12, 2020
- Final Certification
  
  February 18, 2022
- Construction Completion
  
  2020
- ASHRAE Climate Zone
  
  5A - Cool - Humid
- Region
  
  Northeast

Performance

- Annual Heating Demand
  
  9.74
- Annual Cooling Demand
  
  2.08
- Peak Heating Load
  
  7.08
- Peak Cooling Load
  
  2.99
- Site Energy Use Index (EUI)
  
  16.11
- Site Energy Use Index (w/Renewables)
  
  -3.83
- Compliance Software
  
  WUFI Passive
- Source Energy (Residential)
  
  6489
- HERS Rating
  
  26
- Air Tightness (per enclosure area)
  
  0.049

Enclosure

- Wall 1 Type
  
  Framing with Continuous Insulation
- Wall 1 R-Value
  
  34
- Wall 1 Insulation Type
  
  Fiberboard, Cellulose
- Roof 1 Type
  
  Vented Above Deck
- Roof 1 R-Value
  
  63
- Roof 1 Insulation Type
  
  Cellulose
- Floor Type 1
  
  Slab on Grade
- Floor 1 R-Value
  
  27
- Floor 1 Insulation Type
  
  EPS
- Window Manufacturer 1
  
  Schuco
- Window Product Name 1
  
  Living MD (Fixed)
- Whole Window U-Value 1
  
  0.15
- Window Glazing SHGC 1
  
  0.54
- Window Manufacturer 2
  
  Schuco
- Window Product Name 2
  
  Living MD (Operable)
- Whole Window U-Value 2
  
  0.13
- Window Glazing SHGC 2
  
  0.54
- Window Manufacturer 3
  
  Schuco
- Window Product Name 3
  
  Living Slide
- Whole Window U-Value 3
  
  0.17
- Window Glazing SHGC 3
  
  0.54
- Whole Door U-Value
  
  0.17

Systems & Equipment

- Ventilation System Manufacturer
  
  Zehnder
- Ventilation System Product Name
  
  Comfair Q350
- Ventilation System Layout
  
  Centralized
- Ventilation System Type
  
  ERV
- Sensible Recovery Efficiency
  
  86
- Latent Recovery Efficiency
  
  73
- Measured Ventilation Fan Efficiency
  
  0.17
- Heating System Manufacturer
  
  Mitsubishi
- Heating System Product Name
  
  SUZ-KA18NAHZ
- Heating System Type
  
  Air Source Heat Pump
- Heating System Rating
  
  COP
- Heating System Performance (COP)
  
  3
- Cooling System Manufacturer
  
  Mitsubishi
- Cooling System Product Name
  
  SUZ-KA18NAHZ
- Cooling System Type
  
  Air Source Heat Pump
- Cooling System Rating
  
  EER
- Cooling System Performance (EER)
  
  12.5
- Hot Water System Manufacturer
  
  Bradford
- Hot Water System Product Name
  
  Aerotherm 65 gallon
- Hot Water System Layout
  
  Centralized
- Hot Water System Type
  
  Heat Pump Water Heater
- Hot Water System Rating
  
  Energy Factor (EF)
- Hot Water System Performance Rating
  
  3.58
- Range Hood Type
  
  Exhaust
- Dryer Type
  
  Non-Vented
- Renewable Energy Type(s)
  
  On-Site PV
- Renewable Energy Annual Production
  
  8607
- Renewable Energy System Size
  
  6.8