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Circulating pumps vs zone valves
Ever Since we've bought our new house, we've been remodeling and have only been using one zone out of the 4 to heat our house. Thinking about how I'm going to control my zones are now on my mind.
I've read that a constant circulation (variable speeds) in the zones is a great way to keep your temperatures constant, but a lot of set ups I've seen are zoned and only circulate when called. What is the ideal set-up for geothermal zones? Multiple circulators, or one circulator with multiple zone valves?