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Resource. http://www.habitatnyc.org/construction_green.html. New York. Good boiler Good windows Good insulation Air sealing Energy star appliances Good site. Austin.

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  1. Resource • http://www.habitatnyc.org/construction_green.html

  2. New York • Good boiler • Good windows • Good insulation • Air sealing • Energy star appliances • Good site

  3. Austin • Design and orient site and building for natural light, shade, and ventilation, connection of house to the outdoors and the neighborhood.

  4. Denver 1. Make it HIGHLY Efficient! • • Superinsulated, tight building envelope, Wall R-40, Ceiling R-60 • • Solar tempering with orientation specific, low-e windows • • Heat recovery ventilation • • Tankless back-up water heater • • Energy Star appliances • • Compact Fluorescent Lighting 2. Meet ALL of the Remaining Energy Needs with Solar • • 96 sq. ft. drainback solar water heating system • • 4 kW PV system

  5. Water Heating System • Drainback system • 96 sq. ft. collector • 200 gal storage tank • Tanklessbackup heater

  6. SITE PLAN AND BUILDINGLAYOUT TO USESOLAR TEMPERING •Maximize southern window exposure when possible •North-facing windows minimized •2’ eave overhangs

  7. HIGH EFFICIENCYBUILDING SHELL •2x6 exterior walls with R-19 insulation •Raised heel trusses, R-38 attic insulation •Exterior studs 24” on center •Header design that allows 2” blue foam insulation in header space •Low-e vinyl windows •Wall connections that maximize insulated area •One layer of ½” blue foam sheathing over one layer of ½” OSB sheathing on exterior walls •Edges of OSB exterior sheathing caulked before being nailed onto walls •Exterior sheeting seams taped with building tape •All building envelope penetrations sealed with sill seal, caulk, or spray foam

  8. Crawlspace •50 cfm continuous-run crawlspace fan ventilates crawlspace and house •R-19 blanket insulation on crawlspace walls •Gaps between sill, band joist, floor decking sealed •2” thick concrete floor poured over 6-mil plastic vapor barrier •Four transfer grills cut in subfloor to allow conditioned air to pass from living space to crawlspace

  9. HIGH-EFFICIENCY HEATING SYSTEM •90% efficient closed combustion furnace •All HVAC duct work sealed with mastic •Programmable thermostat

  10. APPLIANCES •Gas dryer and optional gas range •Front loading washing machine •Tanklessgas-fired water heater • Compact fluorescent lights http://www.habitatmetrodenver.org/pdf/Home_Energy_Article_Update7.pdf

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