29 Ford Crossing - Energy Report
ENERGY EFFICIENCY PLAN
Lot 5 Meadow Run, Village Hill, Northampton MA
Conditioned Floor Area and Volume 3410 ft2, 28,985 ft3 (including basement)
Building Type Single family detached
Bedrooms 4 (including basement)
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 R-21 Superior Wall Xi+ with R-15 fiberglass batts in cavities (Grade I)
Basement Slab 4” XPS (R-20) underneath 2” XPS (R-10) at edge Rim Joists 3” closed cell spray foam (R-18)
Exterior Walls
Double stud wall – two 2x4 stud walls with 3” space between Filled with densepack cellulose (R-35) Walls capped at top plate and insulation enclosed by interior air barrier (drywall and/or vapor retarder)
Walls to Garage Same as exterior walls
Windows Triple glazed, Argon gas filled, U-value = 0.23, SHGC = 0.21
Basement windows Double glazed, U-value = 0.30, SHGC = 0.29
Glass Doors Triple glazed, Argon gas filled, U-value = 0.23, SHGC = 0.21
Exterior Doors R-5 / U-0.20
Flat Ceilings 16” loose-blown cellulose (R-60), sealed eave baffles
Attic Hatches 8” XPS foam board (R-40), fully gasketed, framed edge dam to height of surrounding insulation Air Sealing & Blower Door Test Aerobarrier run until 0.6 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: Living/Kitchen/Dining Single head ductless mini-split system 13.3 HSPF, 25 SEER
Heating & Cooling Equipment: Bedrooms Multi head ductless mini-split system 10.4 HSPF, 16 SEER
Thermostats Programmable
Water Heating Equipment 2.33 EF heat pump water heater, 80 gallons
Domestic Hot Water Pipes Maximum of 20 feet total distance from water heater to farthest fixture
Whole House Ventilation Energy Recovery Ventilator, 40 watts 70% Sensible Recovery Efficiency, 50% Total Recovery Efficiency 86 CFM continuous airflow
ENERGY EFFICIENCY PLAN
Page 2 of 2 ~ The Center for EcoTechnology ~ Tel (413) 586-7350 ext.242 ~ Fax (413) 586-7351 ~ greenhome@cetonline.org
Lighting & Appliances Specifications Used in Analysis
Lighting 100% LED, including interior, exterior, and garage
Refrigerator 550 kWh/year or less
Dishwasher ENERGY STAR certified
Clothes Washer ENERGY STAR certified
Clothes Dryer ENERGY STAR certified
Preliminary Home Energy Rating Results
Based on the assumptions described above, we have calculated the following Preliminary Home Energy Rating results.
Preliminary HERS Index: 38
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: Mark Newey
Date: 7/20/2020
Job #: 19-03197-5