Habitat for Humanity - NREL ZEH

  • Description: Overview: This home was built in partnership with NREL and sponsored by NREL's managing partners. The home is designed to be a true zero energy home.

Key Partners:NREL, Midwest Research Institute, Habitat for Humanity, Battelle, Energy Outreach, Colorado

Energy Efficiency Measures: Superinsulated shell, orientation specific glazing, solar tempered, ERV, solar water heating, 4kW PV system

Other Features:

* End Type: No Regional Office: Denver Submitted: No Approved: Yes Modified: 2006-02-01 * Visit: No

Specification 3666

  • 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 3690

  • Percent Energy Savings: 47
  • Submitted: No
  • Approved: Yes
  • Editor: Paul Norton
  • Modified: 2006-02-01 00:00:00
  • Floor Plan: 4700 Carr St Plan - 1130 sq. ft
  • Style: 9
  • House Type: Prototype/Research House (G2)
  • Number of Stories: 1.0
  • Number of Bedrooms: 3
  • Floor Area: 1130.0
  • Basement Area: 0.0
  • Conditioned Volume: 9040.0
  • Roof Framing: Vented attic - truss framing
  • Roof Insulation: Fiberglass batt
  • Roof R Value: 60.0
  • Roof Radiant: No
  • Roof Upgrades: Raised heel trusses to accommodate the added insulation.
  • Wall Insulation: Fiberglass batts
  • Wall R Value: 40.0
  • Wall Radiant: No
  • Wall Upgrades: Offset double 2x4 stud wall construction. Outer structural wall is 16 inch OC, inner wall is 24 inch OC
  • Foundation Type: Vented crawlspace
  • Foundation Insulation: None
  • Foundation Upgrades: Floor is insulated rather than the crawlspace. The floor above the crawlspace is insulated to R-30 with fiberglass batts
  • Window Glazing: Double pane - low-e
  • Window Framing: Vinyl
  • Window Upgrades: Southern windows are low-e, high SHGC for solar gain.
  • Space Heating Type: Gas furnace
  • Space Heating Combustion: Sealed combustion
  • Space Heating Capacity: 22.0
  • Space Heating Efficiency: 83.0
  • Space Heating Efficiency Type: % AFUE
  • Space Heating Location: Interior closet
  • Space Heating Energy Proto: 12.0
  • Space Heating Energy: 28.0
  • Space Heating Fuel: Gas
  • Space Heating Upgrades: Single point sealed combustion natural gas heater is loated in the living/dining area. This is supplemented by small electric baseboard heaters in the bedrooms.
  • Lighting Energy: 18.0
  • Lighting Energy Proto: 7.0
  • Light Appliance: 41.0
  • Light Appliance Proto: 36.0
  • Renewable Energy Offset: 66.0
  • Cooling Type: None
  • Air Distribution Upgrades: There is NO duct system for heating. The ERV has a small duct system that helps distribute the heat
  • Air Tight Upgrades: The vapor barrier is also an air barrier. In addition there is a permeable house wrap just inside the siding that air in air tightness.
  • Vent Type: Heat Recovery Ventilator (HRV)
  • Vent Control: Continuous (24 hrs/day)
  • Vent Capacity: 70.0
  • Vent Fan Proto: 6.0
  • Vent Fan: 2.0
  • Vapor Barriers: Poly vapor barier just outside the drywall on the wallys and ceiling and between layers of floor sheathing.
  • IAQ Upgrades: UltimateAir ERV has ECM motors to improve efficiency
  • Hot Water Type: Solar assisted
  • Hot Water Combustion: Sealed combustion
  • Hot Water Location: Interior closet
  • Hot Water Capacity: 200.0
  • Hot Water Efficiency: 0.870000004768
  • Hot Water Energy Proto: 2.0
  • Hot Water Energy: 29.0
  • Hot Water Fuel: Natural Gas
  • Hot Water Upgrades: 96 sq ft drainback solar system with 200 gallons storage and a Rinnai tankless backup heater with an efficiency of 87%.
  • Other Awards: New Millennium ENERGY STAR Builder Award; New Millennium ENERGY STAR Builder Masterpiece Award
  • Benchmark Version: 2005
  • Total Energy Use: 118.0
  • Total Energy Use Proto: 63.0
  • Percent Energy Savings: 47.0
  • Percent Site Energy: 56.0
  • Total Energy Savings: 103.0

Data and Resources

Additional Info

Field Value
Author Paul Norton
Maintainer Paul Norton
Last Updated September 16, 2016, 21:55 (Etc/UTC)
Created September 16, 2016, 21:55 (Etc/UTC)
Construction Type New Construction
Evaluation Level Test House
Climate Cold
City Wheatridge
State CO
Zip Code 99999
Phase Before 2010
Project Start Date 1970-01-01
Project Estimated End Date 1970-01-01
Project Actual End Date 1970-01-01
Completed House Count 1
Expected House Count 1
Energy Savings Percentage 27
Average Estimated Annual Source Energy (MMBtu) 1
Average Conditioned Floor Area (sqft) 1

Dataset extent

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