After I installed my mini split with a heat pump in my city rowhouse in the Midlantic region last winter, I noticed that the hot air from the wall mounted heads were not warming the floor on the first floor. I could turn on the heat from the basement, but that would be a waste and terribly inefficient. As I see it I have three options - really two as I don't want to lose room space with baseboard heaters. I have complete access to the wooden original floor from underneath in the basement. I was thinking hydronic but was wondering if I would get a real return on heating a floor that is only like 250 sqft. I do have a natural gas tankless water heater but looking at a recirculating pump etc.. I don't know. The other option would be using wire-based electric system underneath would be easier but the common knowledge says electricity is more expensive-but is it that more expensive? My understanding is that the larger the floor the smaller the cost per sqft because the equipment cost are diminishing.
My dilemma is that @ 250 sqft would hydronic really pay off in the long or even short run or would it make more sense to go with the electric. I would like to get working on this project and need to start planning one way or the other.