Net Zero Energy Research Test Facility

  • Description: External Air Barrier External Board Foam Insulation Air Source Heat Pump Monocrystaline PV Array
  • End Type: No
  • Regional Office: Philadelphia
  • Submitted: No
  • Approved: Yes
  • Modified: 2010-07-12
  • Stage: Design
  • Visit: Yes

Specification 4808

  • Percent Energy Savings: 7
  • Submitted: No
  • Approved: No
  • Floor Plan: Unknown

Specification 4809

  • Percent Energy Savings: 57
  • Submitted: No
  • Approved: No
  • Editor: Phil Kerrigan
  • Modified: 2010-07-12 09:25:00
  • Floor Plan: NZERTF
  • Style: Single-family detached, site built
  • House Type: Prototype/Research House (G2)
  • Number of Stories: 2.0
  • Number of Bedrooms: 3
  • Floor Area: 2904.0
  • Basement Area: 1601.0
  • Conditioned Volume: 34518.0
  • Surface Area: 5345.0
  • Roof Framing: Unvented attic - truss framing
  • Roof Insulation: Other
  • Roof R Value: 73.0
  • Roof Radiant: No
  • Roof Upgrades: 5" polyiso above roof deck, R-41 cellulose in rafter bay peel-and-stick above polyiso for water management, below polyiso (on roof deck) as primary air barrier
  • Wall Framing: Wood - 2x6 - 24 in o.c. (Advanced Framing)
  • Wall Insulation: Sprayed cellulose
  • Wall R Value: 19.0
  • Wall Sheathing: Polysocyanurate
  • Wall Sheathing R Value: 26.0
  • Wall Radiant: No
  • Wall Upgrades: fully adhered membrane over full plywood sheathing
  • Foundation Type: Conditioned basement
  • Foundation Insulation: Rigid foam
  • Foundation R Value: 23.0
  • Slab Insulation: 10.0
  • Foundation Upgrades: 2" XPS + 2" polyisocyanurate on walls
  • Window Glazing: Triple pane
  • Window Framing: Other
  • Window U Value: 0.189999997616
  • Window SHGC: 0.230000004172
  • Window Glazing Area: 439.0
  • Window Upgrades: Fiberglass double hung windows with low-e film as middle glazing (2 glass + 1 film)
  • Space Heating Type: Air Source Heat Pump
  • Space Heating Combustion: N/A
  • Space Heating Capacity: 30.0
  • Space Heating Efficiency: 10.0
  • Space Heating Efficiency Type: HSPF
  • Space Heating Location: Basement
  • Space Heating Energy Proto: 38.0
  • Space Heating Energy: 128.0
  • Space Heating Fuel: Electric
  • Space Heating Upgrades: Multiple parallel heating systems installed for research purposes (GSHP, multisplits)
  • Lighting Energy: 36.0
  • Lighting Energy Proto: 15.0
  • Light Appliance: 75.0
  • Light Appliance Proto: 72.0
  • Light Eff Type: 2
  • Light EEF Per: 100.0
  • MEL Load: 1
  • Renewable Energy Offset: 146.0
  • Cooling Type: Air Source Heat Pump
  • Cooling Capacity: 3.0
  • Cooling SEER: 16.0
  • Cooling Fuel: Electric
  • Cooling Energy Proto: 6.0
  • Cooling Energy: 48.0
  • Cooling Upgrades: Multiple parallel heating systems installed for research purposes Hot gas reheat for enhanced dehumidification in primary (initial) cooling system
  • Duct Type: Sheet metal
  • Duct Location: In conditioned space
  • Duct R Value: 0.00999999977648
  • Air Distribution Location: Basement
  • Air Distribution Upgrades: Multisplits and Small Duct High Velocity system do not use this ductwork
  • Air Tight Upgrades: Fully adhered membrane on wall and roof sheathing
  • Air Handler Motor: ECM/Variable Speed
  • Vent Type: Heat Recovery Ventilator (HRV)
  • Vent Control: Duty Cycle (some operation in every hour)
  • Vent Capacity: 150.0
  • Vent Fan Proto: 1.0
  • Vent Fan: 1.0
  • Vapor Barriers: Fully adhered drainage plane exterior to moisture-sensitive materials Exterior insulation to prevent condensation at sheathing Active dehumidification of interior
  • IAQ Upgrades: HRV exhausts air from all bathrooms
  • Vapor IN: 3
  • Vapor EX: 1
  • Hot Water Type: Solar assisted
  • Hot Water Backup: Heat pump
  • Hot Water Combustion: Not Applicable
  • Hot Water Location: Basement
  • Hot Water Capacity: 50.0
  • Hot Water Efficiency: 2.0
  • Hot Water Energy Proto: 12.0
  • Hot Water Energy: 52.0
  • Hot Water Fuel: Electric
  • Energy Star Rating: Yes
  • HERS Rating 2006: 1.0
  • Benchmark Version: 2009
  • Total Energy Use: 340.0
  • Total Energy Use Proto: 144.0
  • Percent Site Energy: 42.0
  • Total Energy Savings: 100.0
  • Site Gen: PV
  • SG Capacity: 9.7

Data and Resources

Additional Info

Field Value
Author Phil Kerrigan
Maintainer Phil Kerrigan
Last Updated September 16, 2016, 22:30 (Etc/UTC)
Created September 16, 2016, 22:30 (Etc/UTC)
Construction Type New Construction
Evaluation Level Test House
Climate Mixed - Humid
City Gaithersburg
State MD
Zip Code 99999
Phase Before 2010
Project Start Date 1970-01-01
Project Estimated End Date 2011-10-01
Project Actual End Date 2011-10-01
Completed House Count 1
Expected House Count 1
Energy Savings Percentage 32
Average Estimated Annual Source Energy (MMBtu) 1
Average Conditioned Floor Area (sqft) 1

Dataset extent

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