winesalot
Member
I am getting ready to build and want a full recirculating pump system. When I look at supplyhouse.com or other sources I only see pumps/systems with the crossover valve to be used at your furthest sink. It will be a simple prospect to plumb a single main hot water supply line with tee's for each use and then return that line back to the water heater and, of course, insulate the entire length. My issue is it seems like over kill to put $400 pump on top of the water heater (or in that vicinity) and pump the return hot water in to a tee on the cold water supply to the water heater. If the pex is well insulated it seems to me that a trickle of water being pumped back to the water heater would keep the entire hot water system hot. Why are these pumps so big? Is there a smaller pump that will work?