electric radiant heat 120 vs 240 need advice
I am retrofitting an electric radiant heat system under carpet. It can be configured for 120 in series or 240 in parallel. The 120 volt system would draw 14 amps and the 240 system 15 amps. I am getting this from the bid documents and I hope I'm using the right terminology. I don't understand enough about electricity to know whether one system is significantly more efficient than the other in terms of electricity use to get the job done, ie raise the room temperature to 68 degrees. The 240 system is about 15% more expensive. Your thoughts would be appreciated.