Thanks for the information about the code. It's something I definitely need to look into. We don't generally park the car in there and that is a diesel, and we keep all the flammable stuff in the shed but that is no excuse to not be up to code. I was not done in the picture and I have done my best since then to fill in gaps but I think in that space it's hard to get everything perfectly. Redoing the basement would be great but right now doesn't seem worth it since we do not use the basement, so hard to justify spending money down there. The other thing is my wife thinks we're going to be in this house for just a few years and I have a feeling it's going to be a lot longer than that unless we win the lottery What I would like to do is put the Rinnai in the living room (above garage) where it is always the coldest. The other rooms seem to be doing just fine after I spent a good amount of time sealing the central HVAC system. I am not sure what the cost and return on investment would be if we put in a new boiler for the steam system vs. the now-better-sealed forced hot air system in 5-8 years.