Project Home Again Phase V

  • Description: Building Enclosure
    Roof R-30 low density open cell spray foam at roof deck to create conditioned attic Walls R-16 4" Steel SIPs Frame Floors R-13 2" high density spray foam to underside of subfloor Foundation vented crawlspace Windows vinyl double glazed with LoE3 (U=0.38, SHGC=0.23) Infiltration 1.4 sq in leakage area per 100 sf enclosure

Mechanical Systems
Heat 8.6 HSPF air source heat pump Cooling 16 SEER air source heat pump DHW Instant electric water heater (0.98 EF assumed) Ducts R-6 flex runouts in unvented attic no leakage to outside (5% or less) Ventilation Supply-only system with AprilaireTM 8126 VCS, 33% Duty Cycle:
10 minutes on; 20 minutes off, 50 CFM average flow Return Pathways Jump ducts at bedrooms

Appliances, Lighting, MELs
Lighting Energy Start Lighting Appliances Energy Star Appliances

Renewables
Photovoltaics 3.3 kW array (Canadian Solar CS5P-240) Inverter PV Powered PVP3500 (95.5% Efficiency) End Type: No Submitted: Yes Approved: No Modified: 2011-04-27 * Visit: No

Specification 4852

  • Percent Energy Savings: 0
  • Submitted: No
  • Approved: No
  • Editor: Phil Kerrigan
  • Modified: 2011-04-27 10:06:00
  • Model Name: n/a
  • Floor Plan: 2A
  • Style: Single-family detached, site built
  • Number of Stories: 1.0
  • Number of Bedrooms: 2
  • Floor Area: 1063.0
  • Basement Area: 0.0
  • Conditioned Volume: 12327.0
  • Surface Area: 3563.0
  • Roof Framing: Unvented attic - truss framing
  • Roof Insulation: Spray Foam
  • Roof R Value: 30.0
  • Roof Radiant: No
  • Roof Upgrades: Borate Pressure Treated Roof Trusses Closed Cell High Density Spray Foam in between roof trusses to create an unvented cathedralized attic
  • Wall Framing: SIP - 4 in.
  • Wall Insulation: Rigid foam
  • Wall R Value: 16.0
  • Wall Sheathing: N/A
  • Wall Sheathing R Value: 0.0
  • Wall Radiant: No
  • Wall Upgrades: Steel SIPS
  • Foundation Type: Vented crawlspace
  • Foundation Construction: Other
  • Foundation Construction Other: 25' Class 5 Treated Timber Piles ASTM D25 Engineered I Joists at 24" o.c.
  • Foundation Insulation: N/A
  • Foundation Upgrades: Borate Pressure Treated Floor Trusses R-19 closed cell high density spray foam insulation in the floor joist cavity
  • Window Glazing: Double pane - low-e - spectrally selective
  • Window Framing: Vinyl
  • Window U Value: 0.38
  • Window SHGC: 0.23
  • Window Glazing Area: 120.0
  • Space Heating Type: Air Source Heat Pump
  • Space Heating Combustion: N/A
  • Space Heating Capacity: 24.0
  • Space Heating Efficiency: 8.6
  • Space Heating Location: Attic
  • Space Heating Energy Proto: 4.8
  • Space Heating Energy: 11.4
  • Space Heating Fuel: Electric
  • Space Heating Upgrades: Variable Speed Air Handler in unvented cathedralized attic
  • Lighting Energy: 13.8
  • Lighting Energy Proto: 9.0
  • Light Appliance: 25.18
  • Light Appliance Proto: 17.6
  • Light MEL: 35.3
  • Light MEL Proto: 31.21
  • Light Eff Type: 2
  • Light EEF Per: 100.0
  • MEL Load: 1
  • Cooling Type: Air Source Heat Pump
  • Cooling Capacity: 2.0
  • Cooling SEER: 16.0
  • Cooling Fuel: Electric
  • Cooling Energy Proto: 15.97
  • Cooling Energy: 23.2
  • Cooling Upgrades: 2 Stage cooling with variable speed air handler
  • Duct Type: Duct Board / Flex
  • Duct Location: In conditioned space
  • Duct R Value: 8.0
  • Air Distribution Location: Attic
  • Air Distribution Upgrades: Air handler and duct work in unvented cathedralized attic
  • Air Tight Upgrades: Spray foam enclosure
  • Air Handler Motor: ECM/Variable Speed
  • Vent Type: Central fan integrated supply
  • Vent Control: Duty Cycle (some operation in every hour)
  • Vent Capacity: 50.0
  • Vent Fan Proto: 0.75
  • Vent Fan: 1.4
  • Vapor Barriers: Walls: Housewrap, flashed windows Roof: Roofing felt with taped joints No vapor barrier installed to allow for drying of enclosure to interior via air conditioning
  • Vapor IN: 2
  • Vapor EX: 3
  • Hot Water Type: Electric resistance
  • Hot Water Backup: Other
  • Hot Water Combustion: Not Applicable
  • Hot Water Location: Other
  • Hot Water Location Other: Unvented cathedralized attic
  • Hot Water Capacity: 1.0
  • Hot Water Efficiency: 0.98
  • Hot Water Energy Proto: 21.5
  • Hot Water Energy: 29.5
  • Hot Water Fuel: Electric
  • Hot Water Upgrades: Electric instantaneous tankless water heater
  • Energy Star Rating: Meets criteria but not labeled
  • HERS Rating 2006: 68.0
  • Modeler's Name: Philip Kerrigan Jr., PE
  • Benchmark Version: 10
  • Total Energy Use: 139.78
  • Total Energy Use Proto: 100.83
  • Percent Energy Savings: 27.86
  • Total Energy Savings: 27.86
  • Site Gen: None

Data and Resources

Additional Info

Field Value
Author Phil Kerrigan
Maintainer Phil Kerrigan
Last Updated September 16, 2016, 22:32 (Etc/UTC)
Created September 16, 2016, 22:31 (Etc/UTC)
Construction Type New Construction
Evaluation Level Community Scale
Climate Hot - Humid
City New Orleans
State LA
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
Average Estimated Annual Source Energy (MMBtu) 1
Average Conditioned Floor Area (sqft) 1

Dataset extent

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