I'm getting scared LOL: We moved in November 15th and received our first partial monthly bill yesterday from that date up until November 28 (13 days worth of gas). According to our bill we used 240 cu meters of natural gas at 35 cents minus a 4 cent something or other type of "credit" ..so basically 32 cents per cu meter. Regardless of that I went over to moms and her bill for the entire month she used 288 cu meters (48 meters more) for 30 days with her T.stat set at 72 (yes 72 she's still old school). I know this house is bigger than hers by about 1000 sq ft, that she has a mid efficiency fairly late model forced air Carrier and we have an original 1957 Hoffman hydronic boiler with baseboard radiators. I've been keeping the house about 70. On top of that the temperatures during that period were unseasonably warm and it only got really cold these last 4 days. So last night with flashlight in hand when I heard the boiler kick in I ran outside to the meter and wrote down the reading, then when the boilers gas kicked out I went outside again and checked it.. 3 cu meters for about 25 minutes worth of gas or 96 cents for every cycle.. whoa. Looks like I might have to start putting pennies away for a new higher efficiency boiler..groan.