When you have a boiler system, there is heated water that flows through pipes.
Air blows over the pipes, as well as the heat from the boiling water gets forced through the baseboard units.
If the water freezes in the pipes, you don’t have any heat. I would have thought the boiling water from the boiler would thaw the pipes, but it depended where the pipes were located. The two of us had a boiler system, but earlier this winter, our pipes froze. I didn’t know if the boiler hadn’t done its job, or if the pipes were frozen as well as unable to thaw the pipes. I called the Heating, Ventilation and A/C supplier to look at the boiler for me. When the Heating, Ventilation and A/C worker arrived, she evaluated the gas furnace as well as told me every one of us needed a current fuel nozzle. There was no fuel coming through, so it could light the flame that would heat the water. The pipes that were near the outer walls were frozen. She would need to install a current fuel nozzle, as well as then she had to thaw the pipes. She promised I would have heat by the end of the afternoon, but I wasn’t so sure. If my pipes froze, I sad the Heating, Ventilation and A/C worker might now thaw them. She was an excellent Heating, Ventilation and A/C worker, but how several times did she deal with frozen pipes as well as boiler systems? I called my partner, as well as she told me to trust the Heating, Ventilation and A/C worker. She was sure she had handled this problem before, or she would not have said she could repair it. Two hours later, the pipes were thawed as well as I could hear the water heating in the tank.