Where Do You Stand?
Lori Segall, Byggmeister Energy Auditor
Have you ever wondered how energy efficient your home is compared to other homes of in the Boston area? You can easily calculate your home's energy intensity and compare it to the ranges below. All you need is a year's worth of heating bills that include the fuel usage, your electric bills and the square footage of the heated living space of your house.
If you heat with gas, your fuel usage will be measured in 'therms.' Total the therms used for 12 months, ideally in a calendar year. Your gas bill will have your usage history. Multiply by 100,000 to convert to BTU.
If you heat with oil, add up the number of gallons used in a year (you might want to use the average of gallons used in 2 years to reduce possible errors with fuel already in the tank). Multiply by 13900 to convert to BTU.
Then add your electric usage, as it adds to the heat load. Total your kwh for the same 12 months and multiply by 3413 to convert to BTU. Then add this figure to your heating BTU total.
Total BTU =
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