reply to Dodge
Re: More questions on buying a house Just like others said, you can call the utility company and get the info. you are looking for.
Also, be sure to know that when you are buying a house and considering the 'efficiency' of that particular home, dont go with the bills provided by the seller as a proof of how efficient that house is. I am not sure if this is common but it had happened to me a few years ago. I inquired about a house and the realtor - in addition to providing me with the details emailed me copies of utility bills and said 'look at the amount, the house is very energy efficient'.
The energy efficiency does not (totally) depend on how much the bill is each month but it depends on other factors. That particular house had a 19 year old conventional furnace - not very efficient.