Quote Originally Posted by dan sw fl View Post
Last months data of 1,284 KWH FOR HEAT with 552 HDD equates to 21,000 BTU/HR

Thanks Dan

Is that based on a certain design temperature?
I tried to get my caculation to match yours using the method you mentioned previously using electricity and correction for HDDs temperatures and dT, but i couldn't get anywhere near the 21000btu's