Fellas, I am stuck in the house listening to the wind howl and the rain splatter on the windows. I am trying to plan my heating setup for my new boiler. Right now I am burning a TARM in my basement. I am putting an EKO 60 in a woodshed (75% done) and I am interested in keeping the TARM as a backup (it also burns oil). I am planning on working a DHW into the new system too. I also wanted to use radiant floor heat if possible. I have 2 rooms in one zone that are colder then rest and I have access to the underside of the floors for both rooms. I cannot figure out how to work the radiant floor into the boiler system (I don't see how you can temper the water to get it cool enough for the radiant system when your boiler is running at 180*). My solution is to put a tee in the closed system and run it a sidearm with our current HWH. I would set up the electronics to power a circulator whenever the HWH called for heat (instead of powering the elements). The heat from the HWH would be the source for the radiant heat. Now that I am thinking about it, I would have to use a plate exchanger because the radiant heat would be a closed system. This is getting expensive. Anyway, your thoughts and advice are greatly appreciated. Also, if anyone is interested in designing a system for me, I'd be happy to pay them. I cannot find anybody in this area that is interested in designing a system that I would install.