I'm talking about a Weil Mclain cga2.5 or smallest eco. This is for a small garage apt. 480 SF upstairs and 480 SF in garage underneath.
2 zones, 40 feet Baseboard up and a fan blower coil in the garage. Thinking of blowing system out yearly if I head to warmer weather in
Dec to April. I Plumbed all the fixture to drain in winter, I blow out the sprinkler, so taking an extra 15 minutes to drain and blow out the
system isn't much work. My concern was which system can handle repeated draining better, I'm leaning toward the cheaper, by $1,000,
cast iron.