I have a 40 year old house with an oil furnace. I know how much oil I use a year. Is there a conversion factor that would tell me how much gas I would use with a 90% and a 95% efficient natural gas furnace?


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What is better for the environment? I have a natural gas furnace, but in my area all of our electricity comes from hydro dams. So would I be better off using electric heaters to go more green? We have very cold winters and they last about 5 months. I am thinking of buying some plug in electric heaters, is this a good idea? I must confess that I also want to save money as our natural gas is going up in price this winter by 30%, would using electricity save me money?


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