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
BPC Green Builders BPC Green Builders
Applicant: Mike Trolle
Project Address: 39 Catoonah Rd., Ridgefield, CT
Bdrms./Sq. Footage: 4 BD, 5600 sq ft
Builder Website: bpcgreenbuilders.com
Project Photos: View Project Photos
Final HERS Rating for this Home: 37
Builder Bio Builder Bio Project Overview
Advanced Building Features & Design
Exterior walls and ceilings have been strapped horizontally to limit thermal bridging
Basement, crawl space, and attic have all been brought into the conditioned envelope
All elements of mechanical system are within the conditioned envelope
Building Information
Conditioned Area (sq. ft.) 5600 3736
Bedrooms 4 4
Housing Type (single family, multi-family, attached, detached, etc.) SF/Detached SF/Detached
Thermal
Insulation
Slab Floors R-10
XPS Foam Board
R-10 XPS
foam board
Foundation Walls R-21
2 lb. Foam
R-22 Closed
Cell Foam
Frame Floors R-60
.5 lb. Foam
R-67 Open
Cell Foam
Walls R-29
2 lb. Foam
R-34.7 Open
Cell Foam
Vaulted Ceiling R-58
.8 lb. Foam
R-61 Cellulose & CC foam
Flat Ceiling N/A R-65 Cellulose & CC foam
Windows:
U-Value .25 - .32 .27-.34
SHGC N/A .16-.24
Mechanical
Space Heating (primary only) Closed Loop Geothermal Closed Loop Geothermal
Efficiency (HSPF, COP, etc.) Partial COP 4.0,
Full COP 3.8
COP 4.3
AC Efficiency Closed Loop Geothermal Closed Loop Geothermal
Efficiency (SEER, EER) Partial EER 24.5,
Full EER 17.2
EER 21.0
Water Heating Condensing Tankless Nevien Tankless Water Heater
Efficiency (EF) TBD .98
Ventilation ERV ERV
Flow Rate 64 - 120 cfm 500 cfm
Infiltration Rate 500 cfm 2.0 ACH50
Renewables
PV N/A N/A
Solar Thermal (DHW, space heating, etc.) N/A N/A
Other (specify) N/A N/A
Annual Energy Use (MMMBtu/Yr)
Heating 53.9 ($3438) 13.3 ($847)
Cooling 6.4 ($407) 3.7 ($239)
Water Heating 24.5 ($47) 13.5 ($26)
Lighting & Appliances 40 ($1914) 36.6 ($1695)
Photovoltalics $0 $0
TOTAL 124.8 ($5806) 67.2 ($2807)
Final HERS Rating   37
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