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Project 1776

Acton Passive House

ZeroEnergy Design

Acton, Massachusetts

Building Function

Single-Family
Project Type

New Construction
ASHRAE Climate Zone

5A - Cool - Humid
Construction Completion

2020
Status

Certified
INT. Conditioned Floor Area

1473 ft²

Core Project Team

Phius Certified Rater

Michael Browne
Phius CPHC (Lead)

Jordan Goldman
Project Submitter

Jordan Goldman

Project Information

- Architecture Planning
  
  ZeroEnergy Design
- Building Owner
  
  Philippe Lam
- Mechanical Systems Designer
  
  ZeroEnergy Design
- 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 ft²
- ADD'L Certifications
  
  DOE ZERH, ENERGY STAR for Homes, EPA Indoor airPLUS
- Status
  
  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 kBTU/ft².yr
- Annual Cooling Demand
  
  2.08 kBTU/ft².yr
- Peak Heating Load
  
  7.08 kBTU/ft².yr
- Peak Cooling Load
  
  2.99 kBTU/ft².yr
- Site Energy Use Index (EUI)
  
  16.11 kBTU/ft².yr
- Site Energy Use Index (w/Renewables)
  
  -3.83 kBTU/ft².yr
- Compliance Software
  
  WUFI Passive
- Source Energy (Residential)
  
  6489 kWh/person.yr
- HERS Rating
  
  26
- Air Tightness (per enclosure area)
  
  0.049 CFM50/ft²

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 W/cfm
- 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 kWh/yr
- Renewable Energy System Size
  
  6.8kW