Analyzing your Utility Bill
A recent insulating and weather sealing project has taken place at our log home in Breckenridge. I wanted to determine the percentage of change in energy consumption before and after the remodel. There are always uncontrollable variables to consider when looking at your month to month utility bill (number of house guest, laundry, hot water, outdoor temperature). I graphed the average outdoor temperature per month with the therms of natural gas used that month. The slope of the graphed lines stayed fairly consistent in the months prior to the weatherization remodel, indicating a strong correlation between average outdoor air temperature and therms of energy used. After sealing drafts and insulating a few empty wall cavities I calculated a 26% reduction in energy usage! The cost of the repairs were fairly minor and repairs were implemented during the month being analyzed. I am predicting an even greater reduction in energy use in the following months and next winter.










