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Reference
Publication:
Chandra, Subrato, Neil Moyer, Danny Parker, David Beal,
David Chasar, Eric Martin, Janet McIlvaine, Ross McCluney,
Andrew Gordon, Mike Lubliner, Mike McSorley, Ken Fonorow,
Mike Mullens, Mark McGinley, Stephanie Hutchinson, David
Hoak, and Linda Tozer. Building America Industrialized
Housing Partnership, Annual Report - Fourth Budget Period.
04/01/03-03/31/04. |
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Building
America Industrialized Housing Partnership, Annual
Report - Fourth Budget Period |
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Subrato
Chandra, Neil
Moyer, Danny
Parker, David
Beal, David
Chasar, Eric
Martin, Janet
McIlvaine, Ross
McCluney, Andrew
Gordon, Mike
Lubliner, Mike McSorley, Ken
Fonorow, Mike
Mullens, Mark
McGinley, Stephanie
Hutchinson, David
Hoak, and Linda Tozer |
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Florida
Solar Energy Center |
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1.4
Florida Home Energy Rating Organization Technical Assistance
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Figure 31. This All America Home contains
solar water heating, pool heating, and photovoltaic
systems. |
This BA partner was honored at the 2003 SEBC (Southeast Building
Conference) with the Grand Aurora Award for their home which
features a PV system, batch type solar water heater, solar
pool heating, and a host of features which resulted in this
3,800 square foot home receiving a maximum monthly summer
bill of less than $150. This bill included electric, gas,
water, sewer, and trash pickup! (Please see Figure 31.)
In 2002, Florida HERO provided technical assistance with this
partner's National Association of Home Builder's Energy Value
Awards application. All America received a silver award in
the "hot climate custom home" category.
Florida Home Energy Rating Organization (Florida HERO) provided
an engineered duct system for 26 models in the Regents Park
Townhouse development. The construction of this downtown
urban infill project is progressing well, with completion
expected in late 2003 or early 2004. Building America features
include: ductwork in the conditioned space, outside air for
all central system units, ICF walls, low-E windows, combination
hydronic heat and 13 SEER cooling systems, and programable
thermostats. Each of these 26 units will be individually
performance tested.
- Atlantic Design and Construction
Atlantic Design & Construction (AD&C) is a production
builder located in Gainesville, Florida, who builds about
50 to 60 homes a year. Though initially producing homes better
than the Florida Energy Code minimum, Florida HERO worked
with AD&C to ratchet up their efficiency to Energy Star
and then to Building America standards. The new upgrades
resulted in homes achieving an average HERS score of 89. (Please
see Table 9.)
Savings from increasing the cooling system efficiency more
than offset the additional $250 to $375 needed for improved
duct sealing and insulation and air sealing protocol adjustments.
(Please see Figures 32 and 33.) This savings, while sufficient
to offset those costs, were not enough to pay for all implemented
measures. But, increasing the price of the home by $1,250
was sufficient to cover the additional costs and derive an
excellent profit margin. Despite adding $1,250 to $2,500 to
home buyer costs up-front, AD&Cs award-winning development,
Mentone, has been the best-selling subdivision in Alachua
County for four years running.
Meeting
Building America Standards |
Treatment |
Before |
After
(89 HERS Score) |
Windows |
double pane, clear |
double pane, low-e SHGC .35 |
Ceiling Insulation |
R-30 unfaced |
R-30 unfaced |
Wall Insulation |
R-11 faced |
R-13 unfaced |
Air Conditioning SEER |
10 to 12 |
13 |
Natural Gas Heating |
AFUE .80 |
AFUE .92+ |
Natural Gas Water Heating |
.57 efficiency |
.57 efficiency |
Combustion |
unsealed |
sealed |
Outside Air |
none |
yes |
Return Air |
none |
pressure balanced |
Duct Tightness @ 25 Pa |
30% leakage |
< 5% leakage |
A/C Sizing |
standard rule-of-thumb |
Manual J |
Air Handler location |
garage |
sealed mechanical closet |
Thermostat |
standard mercury |
programmable |
Recessed Lighting |
standard |
air loc |
Table 9. Energy efficient feature changessince stepping up to Building America standards.
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Figure
32. Damp spray cellulose covers walls of sealed mechanical
closet and water heater cabinet. |
Figure
33. Completion of HVAC rough-in with return plenum
on the upper left, supply plenum on the upper right, sealed
combustion pipes on the bottom, and refrigerant line between
pipes. |
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Disclaimer:
This report was prepared as an account of work sponsored by an agency
of the United States government. Neither the United States government
nor any agency thereof, nor any of their employees, makes any
warranty, express or implied, or assumes any legal liability
or responsibility for the accuracy, completeness, or usefulness
of any information, apparatus, product, or process disclosed,
or represents that its use would not infringe privately owned
rights. Reference herein to any specific commercial product,
process, or service by trade name, trademark, manufacturer,
or otherwise does not necessarily constitute or imply its endorsement,
recommendation, or favoring by the United States government
or any agency thereof. The views and opinions of authors expressed
herein do not necessarily state or reflect those of the United
States government or any agency thereof.
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