Good insulation makes the house more efficient and more environment friendly . The type of heating you use doesn't make any difference to the nature ... By the way do you think this will use more or less energy - look at the PIC In my view this is a lot of pipes My radiators do the job just Wright (30 min on every 3/4 hrs on a timer) The truth is that years ago There used to be people who claimed that smoking wasn't going to hurt us... Were they right ? There is people now who claim that every new technology is better more efficient with less carbon footprint than the old one... Etc . Is it really? What difference does it make ? Obviously it's the estetics as there is no radiators hanging on the walls But think about the cost of materials, labour, time consumption and the outcome of it .. As I see it is : When my radiator fail it won't be much headache to fix it .. If your underfloor heating fails then you'll see how painful experience it will be and how big impact it will have onn your wallet The fact is that the choice is yours You can believe in everything people say And if you want to spend less on heating Make your house draft free