CT ZERO ENERGY CHALLENGE
PARTICIPANTS
About The Challenge
ZERO ENERGY HOMES
WHAT'S NEW
2010-2011 CT ZEC SITE
CT ZEC HOME
Connecticut Energy Efficiency Fund
Consulting Engineering Services Consulting Engineering Services
Applicants: Nicholas Fair, George Keithan
Project Address: Killingworth, CT
Bdrms./Sq. Footage: 4 BD, 4500 sq ft
Builder Website: www.cesct.com
Project Photos: View Project Photos
Final HERS Rating for this Home: -7
Builder Bio Builder Bio Project Overview
Advanced Building Features & Design
Double Stud cavity wall with open cell spray foam and rigid board exterior insulation
for thermal breaks.
Triple pane windows, R-62 roof insulation, passive solar heating.
13.65 kw of Solar PV, 10 Solar Thermal panels, Standing column geothermal system
LEED Platinum expected, HERS rating of -6.
Building Information
Conditioned Area (sq. ft.) 4500 4,539
Bedrooms 4 4
Housing Type (single family, multi-family, attached, detached, etc.) SF/Detached SF/Detached
Thermal
Insulation
Slab Floors R-20 R-20 XPS
Foundation Walls R-38 R-39.3 XPS & Open Cell
Frame Floors N/A R-43 Open Cell
Walls R-42 Open Cell Spray Foam R-42 Open Cell
Vaulted Ceiling R-62 Open Cell Spray Foam R-62 Open Cell
Flat Ceiling N/A N/A
Windows:
U-Value .25 .25
SHGC .387 .38
Mechanical
Space Heating (primary only) Geothermal Geothermal
Efficiency (HSPF, COP, etc.) 4 COP 4.1 COP
AC Efficiency Geothermal Geothermal
Efficiency (SEER, EER) 20.6 20.6 SEER
Water Heating Solar/Electric Solar/Electric
Efficiency (EF) 0.62 0.86
Ventilation ERV - Fantech ERV - Fantech
Flow Rate 150 cfm 85 cfm
Infiltration Rate 0.6 ACH50 0.43 ACH50
Renewables
PV 13.65 kW 13.65 kW
Solar Thermal (DHW, space heating, etc.) DHW &
Space Heating
DHW &
Space Heating (975 gal.
storage tank)
Other (specify) N/A N/A
Annual Energy Use (MMMBtu/Yr)
Heating 17.4 ($812) 2.3 ($107)
Cooling 4.4 ($205) 3.5 ($163)
Water Heating 13 ($612) 0 ($0)
Lighting & Appliances 50.1 ($2349) 43.3 ($2031)
Photovoltalics 0 ($0) -59.6 (-$2795)
TOTAL 84.9 ($3978) -10.5 (-$494)
Final HERS Rating 100 -7
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