http://www.unitconversion.org/power/...onversion.html

I found this web site with an online calculator.

By the calculations on this web site a 240 volt Ouellet (OCEH1250-OTH) produces 1250 watts. Converted to BTU's is 4265 and change. (1 watt = 3.412141633 BTU's).

Does this math check out all right?