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Thank you for voting. For more information about the EVHA and this year's
winners, download the 2010 EVHA Winner Magazine.
The winner of the 2010 EVHA People's Choice is:
Yavapai College Residential Building Program
Category: Affordable
Climate: Moderate
Location: Chino Valley, Arizona
Square Footage: 1,207 s.f.
Construction cost: $97 per s.f.
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Energy Features:
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Foundation:
Slab with R-10 underslab insulation and R-21 insulating concrete form stemwall
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Wall Construction:
2x6 at 24" o.c.
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Wall Insulation:
R-20.4 spray cellulose in cavity + R-10 XPS exterior foam
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Rim Joist Insulation:
N/A
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Roof Construction:
Trusses at 24" o.c.
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Ceiling Insulation:
R-34 spray foam in unvented attic
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Windows:
All windows low-e, gas-filled; N,E,W windows: U-0.3, SHGC 0.23; S windows:
U-0.34, SHGC 0.31
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HVAC:
19 SEER, 9.0 HSPF heat pump; Variable speed Heat Recovery Ventilation System
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Ducts:
All in conditioned space; Minimized duct design (supply registers at interior
walls)
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Water Heating:
40 s.f. solar thermal collector with centrally-located 80-gallon storage tank
(EF 1.5); All faucets within 20 ft. of tank
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Lighting:
Mix of ENERGY STAR fixtures, compact fluorescent lamps, and LEDs
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Appliances:
ENERGY STAR refrigerator and dishwasher
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On-site Energy Generation:
4.6 kW photovoltaic system; Solar water heating; Window selection for passive
solar heat gain
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Duct Leakage Test:
27 cfm total at 25 Pa; 0 cfm to exterior
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Blower Door Test:
55 cfm at 50 Pa; 0.2 ACH50
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HERS Index:
-3 (with PV system)
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Energy/Green Building Programs: NAHB Model Home
Guidelines, USGBC LEED-H, environments for Living, Energy Star, DOE Builders
Challenge qualified house
The winner of the 2009 EVHA People's Choice is:
GreenCraft Builders, LLC
Category: Custom
Climate: Hot
Location: Grapevine, Texas
Square Footage: 2,384 s.f.
Construction cost: $165 per s.f.
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Energy Features:
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Foundation:
Slab-on-grade
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Wall Construction:
2x6 @24" o.c.
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Wall Insulation:
R-19 spray foam insulation + R-4 XPS foam sheathing
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Rim Joist Insulation:
R-19 spray foam insulation + R-4 XPS foam sheathing
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Roof Construction:
2x6 rafters
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Ceiling Insulation:
R-22 unvented attic
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Windows:
Low-e, gas-filled aluminum-clad wood; U-0.34; SHGC 0.29
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HVAC:
16 SEER, 9.5 HSPF heat pump
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Ducts:
100% in conditioned space; sealed with mastic and foil tape
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Water Heating:
0.85 EF gas tankless
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Lighting:
8% ENERGY STAR fixtures; 73% CFLs
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Appliances:
ENERGY STAR refrigerator, clothes washer, and dishwasher
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Innovative Features:
Radiant barrier; programmable thermostat; advanced framing; passive solar
design; rainwater collection system
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Duct Leakage Test:
16 cfm to exterior/25 cfm total @ 25 Pa
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Blower Door Test:
0.16 ACH50 (including volume of conditioned attic)
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HERS Index: 54
The winner of the 2008 EVHA People's Choice is:
Stitt Energy Systems, Inc.
Category: Custom
Climate: Moderate
Location: Springfield, Missouri
Square Footage: 3,718 s.f.
Construction cost: $167 per s.f.
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Energy Features:
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Foundation:
R-7.5 rigid foam insulated basement walls with R-5 rigid foam under basement
slab
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Foundation:
R-22 Insulating Concrete Form basement
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Exterior Wall Construction:
2x4 @16" o.c. with 2x2 cross-wise
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Wall Insulation:
R-20 soy-based spray foam
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Rim Joist Insulation:
R-20 soy-based spray foam
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Roof Construction:
Raised-heel trusses @ 24" o.c.
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Ceiling Insulation:
R-30 soy-based spray foam at roofline
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Windows:
Low-e, argon-filled vinyl; U-0.29 to 0.31; SHGC 0.22 to 0.30
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HVAC:
78% efficient wood fireplace system; 17.5 SEER, 8.4 HSPF air source heat pump;
energy recovery ventilator
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Ducts:
All ducts in conditioned space and sealed with mastic and foil tape
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Water Heating:
40 s.f. flat plate solar collector with electric tank auxiliary and PV-powered
pump
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Lighting:
100% fluorescent (43% dedicated fluorescent fixtures)
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Appliances:
ENERGY STAR refrigerator, dishwasher, chest freezer, and washer
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Duct Leakage Test:
0 CFM to exterior at 25 Pa; 0 CFM total at 25 pa
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Blower Door Test:
1.17 ACH50
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HERS Index:
38 (with photovoltaic)
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Innovative Features: 3.1 kW photovoltaic system;
radiant barrier roof decking; tubular skylights; programmable thermostat;
advanced framing techniques including 2-stud corners, ladder blocking, and
cross bracing; passive solar design
The winner of the 2007 EVHA People's Choice is:
Fireside Home Construction
Category: Custom
Climate: Cold
Location: Ann Arbor, Michigan
Square Footage: 3,453 s.f.
Construction cost: $198 per s.f.
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Show/Hide Energy Features
Energy Features:
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Foundation:
R-7.5 rigid foam insulated basement walls with R-5 rigid foam under basement
slab
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Wall Construction and Insulation:
R-26 Structural Insulated Panels; R-28 and R-42 spray foam at 2x6 walls
(laundry) and band joist
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Roof Construction and Ceiling Insulation:
R-43 SIPs and R-51 blown cellulose (laundry)
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Windows:
Low-e, gas-filled; U-0.28 to 0.33; SHGC 0.33 to 0.43
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HVAC:
Geothermal heat pump with 27 SEER rating; 80% efficient heat recovery
ventilator
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Ducts:
All in conditioned space; 8 returns
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Water Heating:
93 EF Electric tank water heater
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Lighting:
33% permanent fluorescent; 67% CFL
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Blower Door Test: 1.24 ACH50
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HERS Index:
58 HERS index
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Innovative Features: Programmable thermostat;
Whole-house ventilation exhausts baths
The winner of the 2006 EVHA People's Choice is:
Stitt Energy Systems, Inc.
Category: Custom
Climate: Moderate
Location: Springdale, Arkansas
Square Footage: 5,492
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Show/Hide Energy Features
Energy Features:
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Foundation:
R-22 Insulating Concrete Form foundation wall
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Wall construction and insulation:
R-24 Structural Insulated Panels
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Roof construction:
Raised heel trusses at 24" o.c.
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Ceiling insulation:
R-30 Fiberglass Batt Insulation
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Windows:
Double pane, low-e, gas filled; U-0.31; SHGC 0.31-0.40
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HVAC:
8.1 HSPF/SEER 14 heat pump
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Ducts:
R-6 flex duct; 100% in conditioned space; sealed with mastic and aluminum tape
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Water heating:
40 s.f. flat plate collector with 10 watt photovoltaic pump; electric
resistance backup
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Lighting:
75% permanent fluorescent fixtures and compact fluorescent lamps. 25%
incandescent fixtures. Solar orientation and open houseplan, combined with
windows on north and east provide natural daylight.
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Appliances:
ENERGY STAR-labeled refrigerator, washer, and dishwasher
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Blower Door Test:
1.1 ACH50
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HERS rating:
91.1
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Innovative features: Passive solar orientation,
builder-developed radiant barrier air channel system to reduce attic
temperature, 78% efficient fireplace, programmable thermostat, low flow
plumbing fixtures, demand-activated hot water recirculation
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