Home heating oil boiler vs space heater?

This old house used 2000 gallons of home heating oil last year (in PA). Up until April 2010 we were paying $2.15/gallon, but now the price ie $3.56. By my calculation it costs $3.89 per day to run a 1500 Watt space heater for a full 24 hours without the thermostat kicking on. So for the same price of 2000 gallons of fuel, I can get 1829 days of electric space heater. So if I buy 10 space heaters at $40 apiece, I should be ahead.

Has anyone tried this tactic? Do you have problems with freezing pipes or uneven heating? What am I missing here?


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