Step 4: Window Placement Matters

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Gervase McDowell
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1 Step 4: Window Placement Matters Un-shaded east facing requires U-Factor & SHGC North facing allows U-Factor & SHGC FESC Summit

2 Step 5: Maintain/Upgrade HVAC Source: NREL PIX #15081 ( Source: Hal Knowles, University of Florida FESC Summit

3 Step 6: Maintain/Upgrade Water Heater Source: Kathryn Ziewitz, University of Florida Source: Hal Knowles, University of Florida FESC Summit

4 FESC Summit Step 7: Upgrade Lighting & Appliances

5 Overview: Whole House Approach Step Component Strategy Impact 1 Doors, windows, walls, floor, and ceiling 2 Heating / air conditioning (HVAC) ductwork Weatherize & seal any holes or gaps in building envelope Seal and insulate ductwork Improves air barrier by reducing air leakage Improves air barrier by reducing air leakage 3 Attic insulation Improve / replace to R-value recommended for your area 4 Windows Evaluate existing quality/performance/aesthetics & selectively upgrade (treatments before structure) Improves thermal barrier by increasing insulation function Improves air & thermal barriers by reducing leakage & reducing SHGC 5 Heating / air conditioning (HVAC) system Service existing HVAC system and/or upgrade to properly sized SEER 15 or higher HVAC system Improves heating and cooling efficiency 6 Water heater Replace old inefficient model with modern ENERGY STAR alternative 7 Lighting Replace high wattage bulbs (e.g., incandescent, halogen) with low wattage alternatives of comparable lumen value (e.g., CFL, LED) 8 Ceiling fans Install ENERGY STAR ceiling fans in commonly occupied rooms 9 Appliances Replace old inefficient models with modern ENERGY STAR alternatives FESC Summit Reduces water heater energy consumption Reduces lighting energy consumption and unnecessary heat load to indoor spaces Reduces load on HVAC system by improving occupant comfort Reduces appliance energy consumption

6 Resources: Whole House Approach U.S. Department of Energy. Energy Efficiency Pays: Systems approach cuts home energy waste and saves money. Office of Energy Efficiency and Renewable Energy. ng_america/26290.pdf U.S. Department of Energy Whole-House Energy Checklist: 50 Steps to Energy Efficiency in the Home. Office of Energy Efficiency and Renewable Energy. s/technical_bulletins/ WH-Energy%20Checklist%20GO pdf U.S. Department of Energy Whole-house Systems Approach. Office of Energy Efficiency and Renewable Energy. g/index.cfm/mytopic= FESC Summit

7 What matters more? The alternative supply? Or the efficiency upgrade? Remember reduce, reuse, recycle, retrofit, FESC Summit renew, then rethink! 43 Source: Kathryn Ziewitz, University of Florida 43

8 1950s Ranch Retrofit: Conservation + Efficiency FESC Summit Source: Kathryn Ziewitz, University of Florida Source: Kathryn Ziewitz, University of Florida 44

9 Conservation Measures Purchase (orientation) Down comforter (sleep) Throw blankets (lounge) Seasonally appropriate attire Slippers / thermals Barefoot / shorts Thermostat set points Summer: Winter: Seasonally appropriate use of blinds/drapes Daylighting Thermal barrier Fans for spot skin cooling Easy on the plug loads Climate acclimation Co-showering Water heater set point degrees (variable) FESC Summit

10 Efficiency Measures Energy Star appliances Ceiling fans Refrigerator Front loading washing machine Programmable thermostat CFL replacement bulbs LED vent hood lights Window blinds/drapes Minimal moisture trapping surfaces Removed carpet Refinished terrazzo Dual glazed low-e sliding glass door & MBwindow Tankless natural gas water heater FESC Summit

11 1950s Retrofit: Performance Year FESC Summit GRU Avg. (ekwh/1000sf) Retrofit Avg. (ekwh/1000sf) Difference (Value) Difference (%) Sum of Degree Days ,953 9,757 (2,196) -18% 3, ,282 9,154 (3,128) -25% 3, ,610 9,959 (2,651) -21% 4, ,696 7,620 (5,076) -40% 4, ,465 10,414 (2,051) -16% 3, ,030 11,139 (891) -7% 3,925 Avg. 12,339 9,674 (2,665) -21% 4, ,539 4,226 (7,313) -63% 3, ,440 5,327 (5,113) -49% 4, ,409 5,639 (2,770) -33% 3, ,589 6,851 (3,738) -35% 4,225 Avg. 10,244 5,510 (4,734) -45% 3,947 Difference (2,095) (4,163) (2,068) -24% (67) Difference 17% 43% -78% -113% 2%

12 FESC Summit Source: Hal Knowles, University of Florida

13 Solar PV Production Time = 362 days (Feb Feb. 2010) Production Annual = 4,168 kwh Daily Avg. = kwh Income Annual = $1, Monthly Avg. = $ Daily Avg. = $3.68 Consumption Pattern (2009) 822 kwh/month (or 571 kwh/month/1,000 sf) 27 kwh/day $79/month FESC Summit

14 2009 Comparison: Efficiency vs. PV Efficiency = 4,734 kwh (at $3,000 investment) GHG avoided = 9,363 lb CO 2 e (or 4.25 MtCO 2 e) Solar PV = 4,168 kwh (at $26,000 investment) GHG avoided = 8,244 lb CO 2 e (or 3.74 MtCO 2 e) FESC Summit

15 2009 Comparison: Efficiency vs. PV Daily baseload = 9-16 kwh kwh/month (or) 5-10 kwh/day Cooking, fridge, lights, clothes washing/drying, entertainment kwh/month (or) 4-6 kwh/day Water heating Daily space conditioning = up to 75 kwh 0-2,300 kwh/month (or) 0-75 kwh/day 2009 Avg. = kwh/month (or) kwh/day FESC Summit

16 GRU DSM Program Outcome 2007 Programs # of HH Rebate $ / HH kwh Saved/ HH $ Saved/ HH Total kwh Saved kwh Saved / $ Duct Sealing 130 $375 1,060 $ , Refrigerator Buyback Central A/C Replacement 319 $ $95 252, $550 2,406 $ , Programs CO2e (lb/kwh) CO2e(lb) Avoided/ HH CO2e(lb) Avoided Total CO2e (kg/kwh) CO2e(kg) Avoided/ HH MtCO2e Avoided Total $ / MtCO2e Duct Sealing , , , Refrigerator Buyback , , , Central A/C Replacement , , , FESC Summit

17 Source: Technology is a tool only as effective as its user

18 Source: RPR FESC Summit 54

Mayor s Neighborhood Summit

Mayor s Neighborhood Summit Be Green, Save Green! Chris Castro, Director of Sustainability Brittany C. Sellers, Sustainability Project Manager Workshop Agenda Overview of Green Works and focus area on