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Energy Conservation

Energy Conservation. Top Energy Reduction Strategies. Air Sealing Holes/Cracks Improved Insulation Increased Efficiency of Heating/Cooling & Domestic Hot Water (DHW) Lighting & Efficient Appliances/Products Staff and resident education. Air Sealing. Major Home Energy Usage.

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Energy Conservation

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  1. Energy Conservation

  2. Top Energy Reduction Strategies • Air Sealing Holes/Cracks • Improved Insulation • Increased Efficiency of Heating/Cooling & Domestic Hot Water (DHW) • Lighting & Efficient Appliances/Products • Staff and resident education

  3. Air Sealing Major Home Energy Usage Air Sealing

  4. Energy Loss: Infiltration & Ventilation

  5. Common Air Sealing Opportunities • Electrical penetrations • Plumbing penetrations • Window framing • Wall to floor connection • Doors and vestibules • Basement ceiling • In-unit ventilation grills • Ducts, plenums, registers

  6. General Air Sealing Guidelines Gaps ≤ 1/4"Caulk Gaps 1/4" – 3"Spray foam OtherFoam board, fiberglass in plastic bags, etc.

  7. General Air Sealing Guidelines Doors & WindowsWeatherstripping Ducts & PlenumsMastic, Duct Tape

  8. Insulation How did the resident cut their bill in half? Insulation & Other Envelope Improvements

  9. Measuring the Efficacy of Insulation R-value: The measure of a material’s resistance to heat transfer.

  10. Insulation Target R-Values www.naima.org

  11. Blown-In Attic Insulation How much is in that back corner? Staple rulers every 15 feet for even coverage Source: www.waptac.org

  12. Reality

  13. Other Envelope Strategies Solar Screens Reflective Metal Roof Radiant Barrier

  14. Lighting & Appliances How a smart strip surge protector works Lighting & Appliances

  15. ENERGY STAR ENERGY STAR-certified products meet energy efficiency standards set by the U.S. Environmental Protection Agency. They are tested in laboratories and off-the-shelf.

  16. Where to Use ENERGY STAR Lighting? • Rooms • Family and living room • Kitchen • Dining room • Porch • Fixtures • Table lamps • Floor lamps • Wall sconces • Pendants • Open ceiling fixtures

  17. Lighting: Use Sensors & Bi-level Lighting • Occupancy or motion sensors turn lights on when people enter the area • Photo Sensors sense light and turn lights on and off based on light levels inside and out • Bi-level lighting dims lights when no one is present • Good for areas where light levels have to be maintained and not off to meet code

  18. Foundation Communities Lighting Inventory • Goal: Comprehensive inventory of all lighting fixtures at FC for use in planning phased lighting upgrade • Timeframe: May-October 2013

  19. Energy Star Products/Appliances ENERGY STAR Available: • Bathroom Fans • Refrigerator • Computer • Window • Kitchen Fans • Air Conditioning Units • Hot Water Heaters • Heating/Cooling Equipment • Dishwasher • Lighting • Dehumidifier • Clothes Washer ENERGY STAR NOT Available: • Clothes Dryer • Mini fridge • Stove • Microwave

  20. Measuring Phantom Loads

  21. HVAC & Domestic Hot Water (DHW) Ways to save energy through purchasing HVAC & Domestic Hot Water (DHW)

  22. A Few Measures of Efficiency • SEER: Measures AC efficiency (split systems) • EER: Measures AC efficiency (PTACs) • EF: Measures appliance efficiency, including water heaters

  23. Replacing HVAC • Buy high-efficiency equipment • 14.5 SEER for split system HVACs • 10.8 EER for heat pump PTACs • Have the equipment sized to load, ask your engineer to show the math (Ask for the ACCA Manual J report) • Measured in tons of cooling • Use R410 Refrigerant

  24. Typical Hot Water Heaters • Inefficient • Short life • Can spill or backdraft products of combustion • Notorious for carbon monoxide production

  25. Alternative Hot Water • Heat Pump Water Heater • Tankless Gas Water Heater

  26. Alternative Hot Water • Solar Thermal • Gas Condensing

  27. Evaluating Multifamily Buildings How did the resident cut their bill in half? Evaluating & Upgrading Multifamily Buildings

  28. Benchmarking: Read Your Utility Bill Look at the utility bill and answer the following questions. • What is the total bill amount? • What is the invoice date? • What was the electric consumption in kWh? What was the demand in kW? • Look at the account breakdown on the second page. • What are the different per-kW charges? (Identify charge type and amount.) • What are the different per-kWh charges? (Identify charge type and amount.)

  29. Conduct An Energy Audit • Different levels of auditing by increasing complexity • Walkthrough audits • Weatherization audits • Whole building audits • Investment grade audits • Hire an expert • BPI certified • Uses ASHRAE standards

  30. Choose Upgrades Focus on the top five strategies • Air Sealing Holes/Cracks • Improved Insulation • Increased Efficiency of Heating/Cooling & Domestic Hot Water (DHW) • Lighting & Efficient Appliances/Products • Staff and resident education

  31. Simple Payback • A way to calculate the time it will take to recuperate your investment in resource efficiency upgrades. Cost of efficiency measure Simple payback period = (in years) Annual savings

  32. Simple Payback - Practice Cost of efficiency measure Simple payback period = (in years) Annual savings

  33. Evaluating Multifamily Buildings How did the resident cut their bill in half? Easy, Free Things You Can Do Today

  34. Easy & Free • Shut windows & doors when HVAC is on • Lower the set temperature of your water heater (~120°F) • Lower the set temperature of your furnace (65° - 70°F • Raise the set temperature of your A/C (76° - 82°F) • Shut off phantom loads • Program your thermostat

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