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I am beating my head against a wall here. I can only get .6 gpm out of each loop on my 6 loop system. Loops are in the neighborhood of 270 ft. Longest is 272 1/2" Pex. The pump I am using is Grundfos S15-58 which by all accounts should be the correct pump for my system. Take a look at my...

I am insulating my garage very well but am confused with what to do with the ridge vent. I have 20 ft scissor trusses so it's wide open all the way to the peak. Should i block it off for the winter and unblock for summer? Sent from my iPhone using Tapatalk

I just completed a 40 x 40 x 16 pole barn and have installed half-inch pex in the floor on six parallel loops with the manifold connected to a siesco SH 22 tank less water heater. The longest loop is 272 ft and the other 5 are close in length. I am trying to size the correct circulator pump...