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I have a 50 year old boiler and would like to convert from oil to gas. We own a 100 yr old brick, attached rowhouse, 1800 square feet, plus 900 square foot basement. With my current set up, we get a $800 fuel bill once a month from November to March, and then that same amount every other month during the non-heating season. In other words, it averages out to about $570 per month.
Any estimates on what my heating costs will be like after the conversion?