P15687 25 Mark Warner Dr Florence Energy Efficiency Plan
ENERGY EFFICIENCY PLAN
Project Address: 25 Mark Warner Drive, Florence, MA
Conditioned Floor Area 2,110 ft2 (no basement area included)
Volume 17,855 ft3
Building Type Single family detached
Bedrooms 2
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 2009.
Building Envelope Specifications Used in Analysis
Foundation Walls Uninsulated
Basement Slab Uninsulated
Floor over Unconditioned Basement R-30 Fiberglass Batts, held in contact with subfloor
Band Joists R-21 Fiberglass Batts
Exterior Walls, including to garage and to
attics
R-21 Fiberglass Batts, all cavities fully enclosed by air barrier on top &
both sides (including sheathing & top plates at attic kneewalls)
Windows & Glass Doors U-value = 0.30 SHGC = 0.27 (predominant values)
Exterior Doors (opaque) R-5 / U-0.20
Flat Ceilings
Upper Attic: 13” loose-blown cellulose (R-48), sealed eave wind baffles,
full insulation contact with sheetrock ceiling
Lower attics: R-38 fiberglass batts in joist cavities, sealed eave wind
baffles, full insulation contact with sheetrock ceiling
Vaulted Ceilings Vaulted: R-38 fiberglass batts, sealed eave wind baffles,
Full insulation contact with sheetrock ceiling
Attic Hatches Attic Hatches over conditioned space: R-10+ Foamboard, fully
gasketed, framed edge dam to height of surrounding insulation
Blower Door Test 3.0 ACH50 or better
Thermal Enclosure Checklist, sections 2&4 Meet all Checklist Requirements as verified by a HERS rater at pre-
drywall and final inspection
Mechanical Systems Specifications Used in Analysis
Heating Equipment 96.0 AFUE natural gas furnace
Cooling Equipment 14.5 SEER air conditioning, TXV or EXV valve included, properly
sized and documented on Mass Save HVAC Contractor Checklist
Water Heating Equipment 0.67 Energy Factor natural gas-fired tank
Duct Leakage
<6 CFM25 leakage to outdoors per 100 sq ft of finished floor area
(<126.6 CFM25); all ductwork thoroughly sealed. All boots and
chases to unconditioned space sealed to sheetrock/subfloor.
Duct Location & Insulation 45% Unconditioned Attic R-8; 50% Unconditioned Basement R-6; 5%
Conditioned Space R-0
Whole House Ventilation Continuously operating, variable speed bath exhaust fan<1.0 sones,
Energy Star, 44+ CFM continuous
ENERGY EFFICIENCY PLAN
Page 2 of 2 ~ Please send signed form to the Center for EcoTechnology
Tel (413) 586-7350 ext.242 ~ Fax (413) 586-7351 ~ greenhome@cetonline.org
Lighting & Appliances Specifications Used in Analysis
Lighting 80% LED, CFL, or pin-based fluorescent
Refrigerator ENERGY STAR certified recommended
Dishwasher ENERGY STAR certified recommended
Preliminary Home Energy Rating Results
Based on the assumptions described above, we have calculated the following Preliminary Home Energy Rating results.
Preliminary HERS Index: 67
Preliminary Improvement Over 2016 Mass. Reference Home v2: 17.0% - Tier I*
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.
* = Mass Save Residential New Construction requirements and incentive amounts can change at any time without
notice at the discretion of program sponsors. We expect significant changes to the rebate amounts to occur in late
2016 and/or early 2017.
Preliminary Rater: John Saveson
Date: 8/5/2016
Job #: P15687