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Project 2228

Cottage Street Housing

Chelsea, Massachusetts

Building Function

Multifamily
Project Type

New Construction
ASHRAE Climate Zone

5A - Cool - Humid
Status

Design Certified
INT. Conditioned Floor Area

72509 sq. ft.

Core Project Team

Phius Certified Verifier

Greg Downing
Phius CPHC (Lead)

Michelle Tinner
Project Submitter

Michelle Tinner

Project Information

- Building Function
  
  Multifamily
- Project Type
  
  New Construction
- Number of Units
  
  66
- Number of Stories
  
  5
- Program Version
  
  Phius CORE 2021
- All Electric
  
  Yes
- INT. Conditioned Floor Area
  
  72509 sq. ft.
- Status
  
  Design Certified
- Design Certification
  
  June 13, 2023
- ASHRAE Climate Zone
  
  5A - Cool - Humid
- Region
  
  Northeast

Performance

- Annual Heating Demand
  
  4.28
- Annual Cooling Demand
  
  6.45
- Peak Heating Load
  
  3.56
- Peak Cooling Load
  
  2.78
- Site Energy Use Index (EUI)
  
  24.37
- Site Energy Use Index (w/Renewables)
  
  20.18
- Compliance Software
  
  WUFI Passive
- Source Energy (Residential)
  
  4210
- Source Energy (Residential w/Renewables)
  
  3388
- Air Tightness (per enclosure area)
  
  0.06

Enclosure

- Wall 1 R-Value
  
  29
- Roof 1 R-Value
  
  48
- Floor 1 R-Value
  
  2
- Whole Window U-Value 1
  
  0.21
- Window Glazing SHGC 1
  
  0.34

Systems & Equipment

- Ventilation System Layout
  
  De-Centralized
- Ventilation System Type
  
  ERV
- Sensible Recovery Efficiency
  
  79
- Heating System Type
  
  Variable Refrigerant Flow (VRF)
- Hot Water System Layout
  
  Centralized
- Hot Water System Type
  
  Natural Gas Water Heater