The document summarizes an experiment to determine how much more a landlord pays to heat an apartment to 70 degrees rather than 60 degrees over winter. Data on furnace run times and outdoor temperatures was collected over several days at both temperatures. Calculations estimate the landlord pays an extra $15.38 per month to heat the apartment to 70 degrees for the tenant's evening hours based on an average outside temperature of 30 degrees. Limitations in the data collection methods are acknowledged.

1. Energy Conservation Project Am I sending my landlord to the poor house keeping my house “tropical?”

8. Data Collected http:// spreadsheets.google.com/pub?key=pI7xEJgzMJemnkfIyVIxHUA Energy Consumption Project Date Research start time Research end time Thermostat setting min Inside temp max Inside temp Outside temp furnice turns on furnice turns off furnice time on time between intervals November 25, 2008 8:00 11:40 66 66 69 40 8:38 8:50 0:12 66 69 39 9:28 9:38 0:10 0:38 66 69 39 10:25 10:36 0:11 0:47 66 69 39 11:21 11:33 0:12 0:45 November 26, 2008 10:43 1:32 71 71 74 40 10:31 10:43 0:12 71 74 40 11:21 11:31 0:10 0:38 71 74 40 12:17 12:28 0:11 0:46 71 74 40 1:21 1:31 0:10 0:53 November 27, 2008 10:11 61 60 64 40 10:11 10:21 0:10 by 1:45 didn't turn back on 5:50 9:05 61 61 61 41 never turned on December 1, 2008 8:30 10:22 70 69 71 32 8:45 8:58 0:13 10:10 10:20 0:10 1:12 December 7, 2008 9:00 69 68 72 40 9:15 9:27 0:12 69 68 72 40 10:41 10:54 0:13 1:14 December 16,2008 8:19 60 60 62 28 8:19 8:31 0:12 60 60 62 30 9:27 9:39 0:12 0:56 60 60 62 31 10:49 11:00 0:11 1:10 60 60 62 36 12:15 12:26 0:11 1:15 December 17, 2008 7:00 70 70 74 23 9:00 9:13 0:13 9:50 10:03 0:13 0:37 10:39 10:51 0:12 0:36 11:32 11:44 0:12 0:41

9. Data collected (zoomed in) Outside temp furnace turns on furnace turns off furnace time on time between Furnace off/0n 40 8:38 8:50 0:12 39 9:28 9:38 0:10 0:38 39 10:25 10:36 0:11 0:47 39 11:21 11:33 0:12 0:45 40 10:31 10:43 0:12 40 11:21 11:31 0:10 0:38 40 12:17 12:28 0:11 0:46 40 1:21 1:31 0:10 0:53

12. How Fuel Consumption was Calculated Note: The .6 represents the amount of fuel (in gallons) the regulator on the furnace burns per hour.

15. Finding fuel consumed per Hour Using the plotted points, slope was calculated using the following equation: Inside Temperature Outside Temperature Slope (gas consumed/hour) 70 degrees 20 degrees .1224 60 degrees 30 degrees .0846 68 degrees 40 degrees .0929 70 degrees 40 degrees .1156

16. Using the slope to find extra fuel consumed over a month (4 hours a day) Averaging the two rows for Inside Temp of 70 degrees: I’m saving 14.28 – 10.2 = 4.1 gallons keeping the temperature at 60 instead of 70 degrees, when the outside temperature is around 30 degrees. Inside Temperature Outside Temperature Slope (gas consumed/hour) Gas Consumed (one month) 70 degrees 20 degrees .1224 14.7 60 degrees 30 degrees .0846 10.2 68 degrees 40 degrees .0924 11.1 70 degrees 40 degrees .1156 13.9 70 degrees 30 degrees .1190 14.28

19. Since I’m at it…. How much is my landlord paying a month to heat my place for those other 20 hours. Averaging the two rows for Inside Temp of 70 degrees: Inside Temperature Outside Temperature Slope (gas consumed/hour) Gas Consumed (one month) 70 degrees 20 degrees .1224 73.4 60 degrees 30 degrees .0846 50.8 68 degrees 40 degrees .0924 55.4 70 degrees 40 degrees .1156 69.3 70 degrees 30 degrees .1190 71.4