Tomahawk Demonstration Project

Green Features of
Tomahawk Demonstration Project

The active solar system. The lower left shows a portion of the solar electric PV system. The upper right shows most of the solar hot-water system.

Energy

1. Passive solar design: indirect gain w/ solarium and water storage tank
2. Small home size (1150 Sq.Ft. plus 200 Sq. Ft. greenhouse)
3. Solar hot-water: water heating system [40 sf]
4. Solar electricity: PV system (solar electric)
5. Insulation: blown in cellulose - R-30 walls; R-54 ceiling, R-33 floors
6. Energy Star appliances:
   refridgerator, dish-washer, clothes washer
7. Energy Star lighting fixtures:
   w/ CF bulbs—over 70% of fixtures
8. Energy performance monitoring system:
   - kWh produced, imported, exported & consumed
   - kWh consumed by major appliance with data logger
9. EPA rated low emission fireplace: sealed combustion wood burning fireplace.
10. Furnace: Solar assisted Lifebreath hydronic forced air furnace
11. Heating ducts: located  in conditioned space
12. HRV system: Lifebreath Heat Recovery Ventilator

The stair treads, risers, and railings are all examples of reclaimed wood.

Materials

1. SFC certified sustainably harvested wood
   - double staggered advanced framed 2x4 stud wall system
   - spruce siding
2. Renewable flooring:
   - cork on lower floor
   - bamboo on upper floor
   - tile floors
3. Reclaimed wood:
   - greenhouse structure
   - stair treads, risers and railings,
   - interior trim (base, door trim, window sills)
4. FSC certified countertops: paperstone
5. Engineered wood: floor and roof structure
6. Sustainably-harvested wood windows and doors [Sierra Pacific]
7. Cabinets: sustainably harvested forest products/ engineered wood.
8. Low/No VOC paints/stains: interior walls and exterior siding

The upper greenhouse provides excellent opportunities for fresh herbs, quick salad and cooking vegetables year around.

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Water Conservation, Gardening, & Transportation

1. Dual flush toilet
2. Integrated storm-water management: rainwater capture/harvesting to on-site irrigation system
3. Roof garden
4. Greenhouse: 2-story 200 sf
5. Neighborhood served by public transit; walking distance to commercial services