47 Higgins Way - Energy Efficiency Plan
ENERGY EFFICIENCY PLAN
47 Higgins Way, Northampton MA
Conditioned Floor Area and Volume 3700 ft2, 31,535 ft3 (including basement)
Building Type Single family detached
Bedrooms 4
Assumptions for Preliminary Home Energy Rating
CET has completed a Preliminary Home Energy Rating based on the construction plans you have provided. Any
energy features not listed below are assumed to meet the prescriptive requirements of the IECC 2015.
Building Envelope Specifications Used in Analysis
Foundation Walls 2X6X24 w/R19 fiberglass insulation
Under Slab 4” Styrene (R-16) underneath
Thermal Break at Slab Edge 2” (R-10) Foam
Band Joists 3” Closed Cell Foam (R21) +R6 Continuous
Rim Joists 3” Closed Cell Foam (R21)
Exterior Walls R19 Bl Cellulose w/ R6 continuous insulation
Walls to Garage Same as exterior walls
Windows Paradigm Windows, U-value = 0.20, SHGC = 0.30
Sliders and glass doors U-Value = 0.29, SHGC = 0.28
Exterior Doors R-5 / U-0.20
Attic Insulation 18” BI Cellulose (R67)
Air Sealing & Blower Door Test Aerobarrier run until 0.60 ACH50 or better achieved
Thermal Enclosure Checklist Meet all Checklist Requirements as verified by a HERS rater at pre-
drywall and final inspection
Plumbing & Mechanical Systems Specifications Used in Analysis
Heating & Cooling Equipment Multi head ductless mini-split system
12.5 HSPF, 22 SEER
Thermostats Programmable
Water Heating Equipment 3.1 EF heat pump water heater, 80 gallons
Domestic Hot Water Pipes Maximum of 37 feet total distance
from water heater to farthest fixture
Whole House Ventilation
Energy Recovery Ventilator, 36 watts
71% Adjusted Sensible Recovery Efficiency,
58% Adjusted Total Recovery Efficiency
90 CFM continuous airflow
Lighting & Appliances Specifications Used in Analysis
Lighting 100% LED, including interior, exterior, and garage
ENERGY EFFICIENCY PLAN
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Refrigerator 650 kWh/year or less
Dishwasher ENERGY STAR certified
Clothes Washer/Dryer Any
Preliminary Home Energy Rating Results
Based on the assumptions described above, we have calculated the following Preliminary Home Energy Rating results.
Preliminary HERS Index: 30
Note that Confirmed Home Energy Rating results may vary from the Preliminary Home Energy Rating results due to
changes in building plans, energy features installed in the home, RESNET standards, software changes, and other
factors.
Preliminary Rater: Bill Lafley
Date: 2/22/2021
Job #: 21-07024