Gardens at Callaway

  • Description: Overview:

Community built to 30% energy savings, with 40% savings as an option.  Construction of two homes (one 30% house and one 40% house) has been completed and both are in the monitoring phase.

Key Partners:

Energy Efficiency Measures:   40% House Package features- raised slab on grade, 2x4 @ 16"o/c framing, wall insulation R-13 icynene cavity with R-5 rigid foam sheathing, full cathedral unvented attic with R-21 insulation, high performance windows (U=0.38; SHGC=0.35), ACH=0.19 (natural), passive ventilation with Aprilaire controller, 8.5 HSPF heat pump, 17 SEER AC unit, electric tankless DWH, all electric Energy Star appliances, 100% fluorescent lighting Other Features:

Weather Info:

  • Location: Atlanta, GA
  • Elevation: 1033.0
  • Fact: 0.75
  • End Type: Yes
  • Regional Office: Atlanta
  • Submitted: No
  • Approved: Yes
  • Modified: 2009-08-06
  • Stage: Completed
  • Visit: No

Specification 3722

  • Percent Energy Savings: 7
  • Submitted: No
  • Approved: Yes
  • Modified: 2008-05-05 00:00:00
  • Floor Plan: Unknown
  • Roof Radiant: No
  • Wall Radiant: No
  • Space Heating Capacity: 0.0
  • Total Energy Savings: 7.0

Specification 4090

  • Percent Energy Savings: 15
  • Submitted: No
  • Approved: Yes
  • Editor: Brad Oberg
  • Modified: 2007-06-05 15:19:00
  • Floor Plan: 40 Percent Option
  • Style: Single-family detached, site built
  • House Type: Prototype/Research House (G2)
  • Number of Stories: 1.0
  • Number of Bedrooms: 3
  • Floor Area: 1929.0
  • Conditioned Volume: 27965.0
  • Roof Framing: Unvented attic - truss framing
  • Roof Insulation: Sprayed cellulose
  • Roof R Value: 21.0
  • Roof Radiant: No
  • Wall Framing: Wood - 2x4 - 16 in o.c.
  • Wall Insulation: Other
  • Wall R Value: 13.0
  • Wall Sheathing: XPS
  • Wall Sheathing R Value: 5.0
  • Wall Radiant: No
  • Foundation Type: Slab on grade
  • Foundation Insulation: None
  • Foundation Upgrades: Raised slab 2 ft above grade
  • Space Heating Capacity: 0.0

Specification 4197

  • Percent Energy Savings: 47
  • Submitted: No
  • Approved: Yes
  • Editor: Brad Oberg
  • Modified: 2008-02-01 00:00:00
  • Floor Plan: Gardens at Callaway, Pine Mountain Builders
  • Style: Single-family detached, site built
  • House Type: Prototype/Research House (G2)
  • Number of Stories: 1.0
  • Number of Bedrooms: 3
  • Floor Area: 1929.0
  • Conditioned Volume: 27965.0
  • Roof Framing: Unvented attic - truss framing
  • Roof Insulation: Other
  • Roof R Value: 27.0
  • Roof Radiant: No
  • Roof Upgrades: Polyicynene spray foam insulation (R-27) is installed at the underside of roof decking to create an air and thermal barrier between the attic space and the outside. The attic space is unvented and indirectly conditioned by air coming from the living space
  • Wall Framing: Wood - 2x4 - 16 in o.c.
  • Wall Insulation: Other
  • Wall R Value: 13.0
  • Wall Sheathing: Other
  • Wall Sheathing R Value: 5.0
  • Wall Radiant: No
  • Wall Upgrades: Exterior walls, R-18 total, using R-13 polyicynene spray foam insulation and (1") R-5 exterior rigid foam board
  • Foundation Type: Other
  • Foundation Insulation: None
  • Foundation Upgrades: Foundation is a poured concrete slab, sitting a minimum of 2 feet above grade. A 6 mil polyethylene sheet, placed prior to pouring the slab, is used as a vapor barrier over compacted fill. A concrete stem wall provides support for the slab
  • Window Glazing: Double pane - low-e
  • Window Framing: Vinyl over Wood
  • Window U Value: 0.379999995232
  • Window SHGC: 0.34999999404
  • Window Glazing Area: 326.690002441
  • Window Upgrades: Windows are wood-framed, with a factory laminated vinyl cladding, and double paned glazing with low-emissivity coating and argon fill; U=0.38 and SHGC=0.35
  • Space Heating Type: Air Source Heat Pump
  • Space Heating Combustion: N/A
  • Space Heating Capacity: 0.0
  • Space Heating Efficiency: 8.0
  • Space Heating Efficiency Type: HSPF
  • Space Heating Location: Attic
  • Space Heating Energy Proto: 33.0
  • Space Heating Energy: 57.0
  • Space Heating Fuel: Electric
  • Space Heating Upgrades: A split system consisting of an air source heat pump (8.0 HSPF) and outdoor unit (14 SEER) provides heating and cooling. In most homes the air handler is located in the cathedralized attic space
  • Lighting Energy: 21.0
  • Lighting Energy Proto: 8.0
  • Light Appliance: 26.0
  • Light Appliance Proto: 25.0
  • Cooling Type: Air Source Heat Pump
  • Cooling SEER: 14.0
  • Cooling Fuel: Electric
  • Cooling Energy Proto: 33.0
  • Cooling Energy: 92.0
  • Cooling Upgrades: A split system consisting of an air source heat pump (8.0 HSPF) and outdoor unit (14 SEER) provides heating and cooling. In most homes the air handler is located in the cathedralized attic space
  • Duct Type: Sheet metal / Flex
  • Duct Location: In conditioned space
  • Duct R Value: 6.0
  • Air Distribution Upgrades: ductwork within conditioned space of sealed and unvented cathedralized attic space
  • Air Tight Upgrades: Airsealing is conducted to all exterior penetrations. A building enclosure airtightness of 0.25 natural air changes (leakage coefficient = 0.29 cfm/ft² at 50 Pa depressurization; leakage ratio = 1.60 in²/100 ft² at 50 Pa depressurization), based on averag
  • Vent Type: Controlled supply
  • Vent Control: Scheduled (runs for certain hours)
  • Vent Capacity: 49.0
  • Vapor Barriers: A 6 mil polyethylene sheet, placed prior to pouring the slab, is used as a vapor barrier over compacted fill.
  • IAQ Upgrades: Passive supply air ventilation system installed. System is connected to the return air plenum to introduce outdoor air into the home. A mechanical damper and a controller timer regulate the outdoor air flow rate. Outdoor air is treated by the air handler prior to entering the air distribution system.
  • Hot Water Type: Electric resistance
  • Hot Water Combustion: Not Applicable
  • Hot Water Location: Interior closet
  • Hot Water Capacity: 40.0
  • Hot Water Efficiency: 0.910000026226
  • Hot Water Energy Proto: 24.0
  • Hot Water Energy: 34.0
  • Hot Water Upgrades: Electric water heaters, with a 40-gallon capacity and an energy factor of 0.91 are used
  • Total Energy Use: 230.0
  • Total Energy Use Proto: 123.0
  • Percent Energy Savings: 47.0
  • Total Energy Savings: 47.0

Data and Resources

Additional Info

Field Value
Author Kevin Brozyna
Maintainer Kevin Brozyna
Last Updated September 16, 2016, 21:57 (Etc/UTC)
Created September 16, 2016, 21:57 (Etc/UTC)
Construction Type New Construction
Evaluation Level Test House
Climate Mixed - Humid
City Pine Mountain
State GA
Zip Code 99999
Phase Before 2010
Project Start Date 2006-09-01
Project Estimated End Date 2009-12-31
Project Actual End Date 2009-12-31
Completed House Count 2
Expected House Count 2
Energy Savings Percentage 23
Average Estimated Annual Source Energy (MMBtu) 1
Average Conditioned Floor Area (sqft) 1

Dataset extent

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