I did not use one for the first half of my install. seems to work fine. I may however have to add a few feet to each radiant circuit thus add to the least resistance path. I already have the straight forward copper manifolds with shut off valves. Looks like a 3 circuit balancing manifold will cost me 150. The one I see has temp gauges, air purger and fill up valves on board. www.pexuniverse.com/store/product/radiant-heat-manifold-ssm003
Worth it or an unnecessary investment?
Worth it or an unnecessary investment?