Andy vs. Randy: Understanding Home Energy Efficiency

the weathe ANDY Vs. RANDY Understanding Home Energy Efficiency Every homeowner who chooses to improve the energy efficiency of their home wants to know the best way to accomplish this sometimes daunting task. By comparing the homes of two fictitious 'homeowners, this infographic explorés the best solutions for creating a comfortable and energy efficient home. Calculations and Assumptions: • Assumed both have the same US average sized home of 2,330 sq ft. • Assumed both live in a mid-atlantic state, and use AC for 935 hours per year. (The average for a mid atlantic home.) • CO2 figures calculated by taking monthly cost/cost of kWh (.12) and then multiplying that number by 1.297 (Ibs of CO2 per kWh.) • Assumed average home uses 936 kWh/month. • Assumed .12 cents per kWh cost of electricity for both Andy and Randy. L GHTS AND COSTING THE US AN AVERAGE OF 12 BASED ON 0008 20 EHTNG ON 8. BULBS O HOURS PER DAY SE CENTS PER kWh ý ANDY VS. RANDY X Uses CFL (compact fluorescent lights) Uses outdated 75w incandescent bulbs Monthly costs Yearly costs ELECTRICITY USED.GOST Monthly costs Yearly costs $11 $126 $44 $526 91.6kWh 1,050kWh 366.6kWh 4,383kWh CO2 EMISSIONS 118 Ibs of CO2 1,361 Ibs of CO2 475 lbs of CO2 5,684 lbs of CO2 TOTAL SAVINGS Monthly Spends $33 less than Emits 357 Ibs of CO2 less than Uses 275 kWh less than Yearly Spends $400 less than Emits 4,323 Ibs of CO2 less than Uses 3,333 kWh less than By using an energy-efficient light bulb WINDOWS BASED ON THE AVERAGE HOME USING AND SAVING WITH ENERGY 15% STAR RATED WINDOWS 936 kWh/MONTH V ANDY VS. RANDY X Uses double-pane, Energy Star rated windows Uses old, single pane windows that aren't Energy Star rated Monthly costs Yearly costs ELECTRICITY USED.COST Monthly costs Yearly costs $95.50 $1,146 KWH $112 $1,347 795kWh 9,550kWh 936kWh 11,232kWh CO2 EMISSIONS 1,032 Ibs of CO2 12,386 Ibs of CO2 1,214 Ibs of CO2 14,568 Ibs of CO2 TOTAL SAVINGS Monthly Spends $16.50 less than Emits 182 Ibs of CO2 less than Uses 141 kWh less than Yearly Spends $201 less than Emits 2,182 Ibs of CO2 less than Uses 1,682 kWh less than By using double-pane Energy Star rated windows HVAC BASED ON AVG 2,336 THE AVERAGE HOME SIZE OF SQ FT, IN MID ATLANTIC STATE 935 HOURS OF COOLING EACH YEAR ý ANDY VS. RANDY X Uses a new HVAC unit with a high SEER rating of 15 Uses an ancient HVAC unit with a low SEER rating of 8 Monthly costs Yearly costs ELECTRICITY USED.COST Monthly costs Yearly costs $18 $215 $35.75 $429 149kWh 1,791kWh 297kWh 3,575kWh CO2 EMISSIONS 193 Ibs of CO2 2,322 Ibs of CO2 385 Ibs of CO2 4,636 Ibs of CO2 TOTAL SAVINGS Monthly Spends $17.80 less than Emits 192 Ibs of CO2 less than Uses 148 kWh less than Yearly Spends $214 less than Emits 2,314 Ibs of CO2 less than Uses 1,784 kWh less than By using a new HVAC unit with a high seer rating of 15 INSULATION AND SEALING U ASSUMES RANDY'S HOME USES 936 kWh/MONTH, THE US AVERAGE V ANDY VS. RANDY X Uses proper insulation that reduce energy expenditures up to 20% over average. Uses improper insulation that provides no energy expenditure reduction over average. Monthly Yearly costs ELECTRICITY USED.COST Monthly costs Yearly costs costs $90 $1,078 KWE $112 $1,344 750kWh 8,983kWh 936kWh 11,232kWh CO2 EMISSIONS 975 lbs of CO2 11,651 Ibs of CO2 1,214 Ibs of CO2 14,568 Ibs of CO2 TOTAL SAVINGS Monthly Spends $22 less than Emits 266 Ibs of CO2 less than Uses 186 kWh less than Yearly Spends $264 less than Emits 2,917 Ibs of CO2 less than Uses 2,249 kWh less than By using proper insulation that reduce energy expenditures up to 20% over average. TOTAL SAVINGS ANDY'S HOME IS MORE ENERGY EFFICIENT BECAUSE OF THE IMPROVEMENTS HE HAS MADE TO HIS LIGHTING, WINDOWS, HVAC, AND INSULATION. BELOW ARE ANDY'S SAVINGS OVER RANDY. Andy Monthly Total Electricity Cost Savings: $90 Total CO2 Emissions Savings: 997 lbs Total kWh Savings: 751 kWh Yearly Total Electricity Cost Savings: $1,079 Total CO2 Emissions Savings: 11,736 Ibs Total kWh Savings: 9,048 kWh Sources: http://www.hvacopcost.com/ http://michaelbluejay.com/electricity/lighting.html http://hes.lbl.gov/consumer/ http://www.otherpower.com/otherpower_lighting.html http://eartheasy.com/live_energyeff_lighting.htm http://www.carbonfund.org/site/pages/carbon_calculators/category/Assumptions http://insulation.owenscorning.com/homeowners/tools-resources/energy-savings-calc.aspx# WellHome. Improve