We renovated one room recently and put in completely new insulation in its walls and the attic above. Only electrical difference between before and after renovation is that there is a an additional electrical baseboard heater in this room, plus a ceiling fan with lights on it. This winter has been much milder than last year, but my Dec 2008 electricity consumption was 4500KWh, compared to 2300KWh in Dec2007.

Question: is it possible that during the renovation some wiring was done incorrectly and electricity is being consumed without a switch being turned on? I can't understand how electricity usage could have more than doubled for the same house with better insulation and a milder winter? One extra baseboard heater should not cause consumption to increae by 2200Kwh in a month!! Only thing I can think of is that some circuit is consuming electricity without my throwing a switch on, but that does not make much sense either. I am at my wits end... Any ideas? thanks much.

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