We recently converted a one car garage to a family room with forced hot water heat. We live in New England last year we had some frozen heating pipes in the room during a real arctic blast -5 a hair dryer did the trick. During the summer we had our contractor insulate the entire area of the baseboard heat and he used some Glycol in the Zone for the room. Well wouldn't you know this past weekend when it was -5 again we had frozen pipes luckily I was able to tackle it with a hair dryer. But if he used Glycol in the heating system why did the pipes freeze? I went to the source and poured some water from the return pipe to the zone in a jar and the water was clear shouldn't the water be the color of the antifreeze which is red? With an even colder blast of air due in for the end of the week I know the chances of the pipe freezing is high any suggestions?
thx