I have an older home on a lake with radiant heat, powered by a boiler. The pump is working and I have bled all the lines, however the water is still not flowing through the pipes. Could they be clogged with calcium or something? Is there a way to check or unclog them without having to cut the pipes? I have 3 children at home and we live in Michigan........so it's freezing. We are using a space heater right now, and I'm seriously considering buying a EdenPure if I can't get the heat working. If anyone has any ideas on what I can do, I would greatly greatly appreciate it as this is not the season for me to be shelling out thousands of dollars that I don't have on a heating system. I appreciate any help or ideas that you have. Thank you all so much.