Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
I, hopefully, will be converting from oil to gas in the near future. About 10 years ago I added on to the house and converted my heat to radiant. I had Northeast Radiant Tech. set up my system. Part of that was providing them with all room measurements, window sizing and r values, floor materials, wall insulation, etc. How does that relate to a heat loss calculation?
Rest assured, this will be the first of many questions as I get closer to the actual conversion.