[blitzar]

Go to the dump and find an old electric unit, slap it in the corner of your garage?

[ProllyInfamous]

There is small chance of this working. The address lookup (when ordering) verifies through public records how your waterheating occurs.

So would only work if no public records of your house is available (and then would probably become much more complicated with paperwork).

Using Zillow/Trulia, you can verify if your house's information is publicly available (under features/amenities).