How to Get a Better HERS Rating

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How to Get a Better HERS Rating

  1. 1. How to get a better HERS rating Really it is about how to build a better house Chet Pasho November 3, 2010 www.preferredbuildings.com
  2. 2. Major components of a HERS rating • Air sealing • Insulation levels • Thermal bridging • Ventilation • Equipment choices – heating, cooling, • Lighting • Appliances
  3. 3. Before you start digging Enroll your new home in the ENERGY STAR program . Get a plan review. Develop strategies to improve the performance of your new home.
  4. 4. Start at the foundation • Proper drainage and backfill • Radon collection • Insulate the foundation walls • Insulate the slab • Air seal the foundation • Air seal the sill
  5. 5. Air sealing – how important is it really? • Heat loss • Moisture transfer
  6. 6. Floor to wall connections
  7. 7. Air sealing walls • Air tight drywall
  8. 8. Attic air sealing.. • Access panels • Pipes • Wires • Partitions • Chimneys • ducts
  9. 9. Attic air sealing-why is it important?
  10. 10. “Filtered air”
  11. 11. Pipes and wires
  12. 12. Insulation- what kind? • Fiberglass • Cellulose • Spray foams • Sheet foams • Hay bales
  13. 13. Insulation – how much?
  14. 14. Windows and doors • U values • SHGC values • Infiltration rates
  15. 15. Thermal bridging???
  16. 16. OVE framing
  17. 17. Insulated sheathings
  18. 18. Why ventilate? • Moisture control • Odors • VOC’s • Radon
  19. 19. How much to ventilate?
  20. 20. What equipment to use? • Exhaust only • Balanced ventilation • HRV/ERV
  21. 21. No silver bullet • Attention to small details • Educate your customers • Educate subs • Educate your crew • Create ownership and enthusiasm • Throw a party • Market the energy efficiency of your homes

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