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Compact Shaped Houses

One-Watt-Houses™ are high performance houses which dramatically decrease the energy demand and increase the comfort. They are inspired by German Passive Houses and adjusted for local conditions. One-Watt-Houses can be heated with about one Watt per square foot during the coldest day of the year.

Customers of CTI can decide to pursue Passive House Certification, LEED, HERS rating, Energy Star, or any label they feel offers benefits. What matters more than any label is the final and measured resource efficiency of the building.

One-Watt-Houses require very little heat on a 0°F day.

• a 2000 ft2 house heated with only twenty 100W incandescent light bulbs or one powerful hair dryer!
• a 300 ft2 living room heated with 10 candles.
• Spending about a $1 a day to heat an average-sized Midwestern during the coldest month of the year, depending on energy cost.

Prioritizing Energy Efficiency
The best and least expensive way to live “green” starts with using less energy. One-Watt-Houses are designed specifically to reduce total overall energy demand by 60 to 80% compared to typical Midwestern homes. This approach is not just the most energy efficient but the most economical considering the life cycle of buildings.

The principles of our design are simple:

1. Fully-enclosed, super-insulated thermal envelope (R40-R60).
2. Passive solar energy and the net solar gain provided by windows (Uw<0.16 and SHGC>0.4).
3. Include a highly efficient heat-recovery ventilation system (η > 85%).
4. Minimize air infiltration.

More than energy efficiency
CTI’s unique, holistic process integrates custom architectural design and engineering. We work with you to design a home that captures your individual style and preferences, while ensuring the house optimizes energy efficiency targets and total life cycle building performance. Key advantages are:

  • dramatic reduction in energy demand, cost, carbon emissions, other pollutants
  • significantly improved thermal comfort - interior surfaces are uniformly warm
  • better indoor air quality
  • lower water consumption
  • simple
  • low maintenance
  • disaster prove
  • happy occupants.