Click here to view our interactive graphic in the Wall Street Journal.

1. Natural Daylighting

Efficient use of windows reduces the need for artificial lighting during daylight hours without causing heating or cooling problems.

2. Solar Panels

Convert energy from the sun into electricity.

3. Automated Controller and Monitor System

Manages heating, cooling, ventilation and thermal storage.

4. Heat Recovery Ventilator (HRV)

Provides controlled and natural ventilation for airtight building envelope.

5. Highly Insulated

Open cell spray foam and cellulose insulation used for walls, floors and roof.

6. High Thermal Performance Windows

Four times more efficient than double-pane windows.

7. Wastewater Heat Recovery System

Preheats shower water.

8. Thermal Storage Basement

High flyash concrete stores daytime heat and provides nighttime cooling.

9. High Efficiency Heat Pump

Uses heat from outdoor air to heat the indoor air.

10. Sustainable Lumber

Forest Stewardship Council (FSC) certified lumber throughout our products and on the exterior decks.

11. Zero VOC Paint

Other paints and finishes release low level toxic emissions into the air for years after application, the source of which is a variety of volatile organic compounds (VOCs). ZETA is using zero VOC paints throughout the unit for improved indoor air quality.

12. ENERGY STAR

ZETA's demonstration unit qualified for the ENERGY STAR rating. In order to do so it meets strict guidelines for energy efficiency set by the U.S. Environmental Protection Agency. These homes are at least 15% more energy efficient than homes built to the 2004 International Residential Code (IRC), and include additional energy-saving features that typically make them 20%-30% more efficient than standard homes. Additionally, ENERGY STAR rated appliances are used throughout the home.