Edwards Pond

  • Description: Overview:

Landmark Renovation and Building Company has designed the Edwards Pond Community to reach an energy savings level of more than 50%.

Key Partners:

Energy Efficiency Measures:

Unvented, conditioned crawl space with R-10 polyurethane rigid insulation on the interior of the foundation walls; 2x6 walls contain R-19 fiberglass batt insulation and R-3 extruded polystyrene foam sheathing; R-30 fiberglass batt insulation in attic floor cavities; radiant barrier sheathing on roof deck; High performance Low-E windows (U=0.34, SHGC=0.25 - north, east, west) (U=0.49, SHGC=0.56 - south); ACH(50) = 5.0; 8.0 HSPF electric air source heat pump (back up heating 92% AFUE propane furnace); SEER 10 A/C unit; Passive ventilation with 57 CFM continuous supply to return duct; Ducts mostly in conditioned space with leakage less than 3%of system cooling CFM @ 25 Pa; Closed loop solar thermal system with CPVC parabolic trough collector panels, external heat exchanger and 80 gal. storage tank; 90% Fluorescent lighting; EnergyStar or lowest energy consumption appliances; 1.92 kW PV system with battery backup sytem.

Other Features:

* End Type: No Regional Office: Atlanta Submitted: No Approved: Yes Modified: 2007-07-06 * Visit: No

Specification 3759

  • Percent Energy Savings: 51
  • Submitted: No
  • Approved: Yes
  • Editor: Brad Oberg
  • Modified: 2007-07-06 00:00:00
  • Floor Plan: Edwards pond 2731
  • House Type: Unknown
  • Number of Stories: 2.0
  • Floor Area: 2731.0
  • Roof Framing: Unvented attic - truss framing
  • Roof Insulation: Fiberglass batt
  • Roof R Value: 30.0
  • Roof Radiant: No
  • Roof Upgrades: Fiber glass batt insulation in all roof rafter cavities and ceiling areas. R-30 thermal performance. Radiant barrier sheathing and light grey shingles.
  • Wall Insulation: Fiberglass batts
  • Wall R Value: 19.0
  • Wall Sheathing: Other
  • Wall Sheathing R Value: 3.0
  • Wall Radiant: No
  • Wall Upgrades: 2x6 walls with R-3 extruded polystyrene foam sheathing installed on exterior walls. R-19 fiber glass batt insulation between framed wall cavities.
  • Foundation Type: Conditioned basement/Unvented crawl space
  • Foundation Insulation: Rigid foam
  • Foundation R Value: 10.0
  • Foundation Upgrades: Unvented, conditioned crawl space with R-10 polyurethane rigid board insulation on interior of foundation walls.
  • Window Glazing: Double pane - low-e
  • Window U Value: 0.340000003576
  • Window SHGC: 0.25
  • Window Glazing Area: 430.0
  • Window Upgrades: High performance windows, with low-emissivity coating to reduce heating and cooling loads (U=0.34, SHGC= 0.25) are used in north, east and west orientations. To reduce heating loads, south windows are high solar gain (SHGC= 0.56, U=0.49).
  • Space Heating Type: Air Source Heat Pump
  • Space Heating Combustion: N/A
  • Space Heating Efficiency: 8.0
  • Space Heating Efficiency Type: HSPF
  • Space Heating Location: Other
  • Space Heating Energy Proto: 41.0
  • Space Heating Energy: 77.0
  • Space Heating Fuel: Electric
  • Space Heating Upgrades: 8.0 HSPF electric air-source heat pump, with a back-up heating system of 92% AFUE condensing propane furnace and condensing unit with SEER 10.
  • Lighting Energy: 27.0
  • Lighting Energy Proto: 9.0
  • Light Appliance: 26.0
  • Light Appliance Proto: 25.0
  • Cooling Type: Electric Air Conditioner (split system)
  • Cooling SEER: 10.0
  • Cooling Fuel: Electric
  • Cooling Energy Proto: 29.0
  • Cooling Energy: 59.0
  • Cooling Upgrades: 10 SEER A/C unit (installed prior to SEER 13 efficiency requirement)
  • Duct Type: Sheet metal / Flex
  • Duct Location: In conditioned space
  • Air Distribution Location: Other
  • Air Distribution Upgrades: The entire air distribution system is fully ducted and located within conditioned space as much as possible. Ductwork is minimized through the use of a central return system. All ductwork is sealed in order to improve duct airtightness. System air leaka
  • Air Tight Upgrades: More effective flashing practices at windows and doors. Airtight building enclosure achieved by a continuous interior air barrier (drywall) and sealing of penetrations. Air leakage target of 5.0 air changes per hour at 50 Pa as tested by a blower door.
  • Vent Type: Controlled supply
  • Vent Control: Scheduled (runs for certain hours)
  • Vent Capacity: 57.0
  • IAQ Upgrades: A passive supply air ventilation system connected to the return air plenum to introduce outdoor air into the home. Outdoor air is treated by air handler prior to entering distribution system. A mechanical damper and a controller timer regulate the outdoor air flow rate. Ventilation requirement is 57 cfm continuous.
  • Hot Water Type: Solar assisted
  • Hot Water Combustion: Not Applicable
  • Hot Water Location: Other
  • Hot Water Capacity: 80.0
  • Hot Water Energy Proto: 8.0
  • Hot Water Energy: 40.0
  • Hot Water Fuel: Electric
  • Hot Water Upgrades: Two CPVC parabolic trough collector panels for closed loop solar thermal system. External heat exchanger and 80 gallon storage tank with electric heating element.
  • Benchmark Version: 12/29/04
  • Total Energy Use: 229.0
  • Total Energy Use Proto: 112.0
  • Percent Energy Savings: 51.0
  • Total Energy Savings: 51.0

Data and Resources

Additional Info

Field Value
Author Brad Oberg
Maintainer Brad Oberg
Last Updated September 16, 2016, 21:54 (Etc/UTC)
Created September 16, 2016, 21:54 (Etc/UTC)
Construction Type New Construction
Evaluation Level Test House
Climate Mixed - Humid
City Chapel Hill
State NC
Zip Code 99999
Phase Before 2010
Project Start Date 2005-06-16
Project Estimated End Date 2005-12-30
Project Actual End Date 2005-12-30
Completed House Count 1
Expected House Count 1
Energy Savings Percentage 51
Average Estimated Annual Source Energy (MMBtu) 1
Average Conditioned Floor Area (sqft) 1

Dataset extent

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