Kathryn Estates - TNAH2010

  • Description: The exterior walls were constructed using a 10" thick insulated concrete form system with R-23 thermal performance with recycled polystyrene. All of the windows have a low-e coating to limit solar heat gain and perform at U=0.34 SHGC=0.25 or better. The sliding glass doors perform at U=0.34 SHGC=0.17 or better. The attic is unvented and air sealed; spray foam insulation with a minimum of R-30 was used on the underside of the roof deck and at gable ends. The home also exhibits increased airtightness because all penetrations and openings are sealed to achieve 0.30 natural air changes under blower door testing at 50 Pa.

Weather Info:

  • Location: Las Vegas, NV
  • Elevation: 2178.0
  • Fact: 0.810000002384
  • End Type: No
  • Regional Office: Seattle
  • Submitted: No
  • Approved: No
  • Modified: 2010-07-08
  • Stage: Under Construction
  • Visit: No

Specification 4745

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

Specification 4747

  • Percent Energy Savings: 0
  • Submitted: No
  • Approved: No
  • Editor: John Chase
  • Modified: 2010-04-09 00:00:00
  • Floor Plan: New American Home 2010
  • Style: Single-family detached, site built
  • Number of Stories: 2.0
  • Number of Bedrooms: 4
  • Floor Area: 6983.0
  • Conditioned Volume: 87982.0
  • Roof Framing: Unvented attic - truss framing
  • Roof Insulation: Spray Foam
  • Roof R Value: 30.0
  • Roof Radiant: No
  • Roof Upgrades: The attic is unvented and sealed air tight. Icynene┬« spray foam insulation (R-30 minimum) is used at the underside of the roof deck. A green roof system is installed on flat roof sections.
  • Wall Framing: Insulated concrete forms
  • Wall Insulation: Rigid foam
  • Wall R Value: 23.0
  • Wall Sheathing: EPS
  • Wall Sheathing R Value: 7.0
  • Wall Radiant: No
  • Wall Upgrades: 10" thick insulated concrete form system by APEX with R-23 thermal performance. A portion of the walls are wood framed with R-20 insulation. Dryvit exterior insulation and finish system adds R-7 insulation to the base wall systems.
  • Foundation Type: Slab on grade
  • Foundation Insulation: None
  • Window Glazing: Double pane - low-e - spectrally selective
  • Window Framing: Wood
  • Window U Value: 0.340000003576
  • Window SHGC: 0.25
  • Window Glazing Area: 2641.0
  • Window Upgrades: Aluminum clad wood framed windows by Sierra Pacific, with low E coating to limit solar heat gain. Windows have performance values no worse than U = 0.34 and SHGC = 0.25; and sliding glass door values are no worse than U = 0.34, SHGC = 0.17.
  • Space Heating Type: Gas furnace
  • Space Heating Combustion: Sealed combustion
  • Space Heating Capacity: 360.0
  • Space Heating Efficiency: 95.0
  • Space Heating Location: Attic
  • Space Heating Energy Proto: 110.0
  • Space Heating Energy: 211.0
  • Space Heating Fuel: Gas
  • Space Heating Upgrades: Space conditioning is provided by five air handling systems. Each system is in conditioned space and consists of a variable speed gas furnace with 95% AFUE, MERV 8 air filtration.
  • Lighting Energy: 60.0
  • Lighting Energy Proto: 28.0
  • Light Appliance: 110.0
  • Light Appliance Proto: 135.0
  • Light Eff Type: 3
  • Light EEF Per: 80.0
  • MEL Load: 1
  • Cooling Type: Electric Air Conditioner (split system)
  • Cooling Capacity: 19.0
  • Cooling SEER: 17.0
  • Cooling Fuel: Electric
  • Cooling Energy Proto: 103.0
  • Cooling Energy: 329.0
  • Cooling Upgrades: Variable speed dual-compressor condensing units with an average of SEER 17 performance.
  • Duct Type: Flexible
  • Duct Location: In conditioned space
  • Duct R Value: 6.0
  • Air Distribution Location: Attic
  • Air Distribution Upgrades: All ductwork is sealed for airtightness to exhibit 3% or less (of system airflow) air leakage to the outside.
  • Air Handler Motor: ECM/Variable Speed
  • Vent Type: Heat Recovery Ventilator (HRV)
  • Vent Control: Continuous (24 hrs/day)
  • Vent Capacity: 220.0
  • Vent Fan Proto: 8.0
  • Vent Fan: 6.0
  • Vapor Barriers: Best practice
  • Vapor IN: 3
  • Vapor EX: 3
  • Hot Water Type: Solar assisted
  • Hot Water Backup: Gas - tank
  • Hot Water Combustion: Power vented
  • Hot Water Location: Garage
  • Hot Water Capacity: 115.0
  • Hot Water Efficiency: 0.819999992847
  • Hot Water Energy Proto: 12.0
  • Hot Water Energy: 24.0
  • Hot Water Fuel: Natural Gas
  • Hot Water Upgrades: A solar thermal system, which includes a natural gas fueled backup tank, provides hot water for the majority of the house. A natural gas fueled tankless water heater (EF=0.82) provides hot water for the balance.
  • Modeler's Name: John Broniek
  • Total Energy Use: 740.0
  • Total Energy Use Proto: 396.0
  • Percent Energy Savings: 46.48
  • Total Energy Savings: 46.48

Data and Resources

Additional Info

Field Value
Author John Broniek
Maintainer John Broniek
Last Updated September 16, 2016, 22:28 (Etc/UTC)
Created September 16, 2016, 22:28 (Etc/UTC)
Construction Type New Construction
Evaluation Level Test House
Climate Hot - Dry
City Las Vegas
State NV
Zip Code 99999
Phase Before 2010
Project Start Date 1970-01-01
Project Estimated End Date 2010-09-08
Project Actual End Date 2010-09-08
Completed House Count 1
Expected House Count 1
Energy Savings Percentage 3
Average Estimated Annual Source Energy (MMBtu) 1
Average Conditioned Floor Area (sqft) 1

Dataset extent

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