I ran all the faucets until no air sputtered out so I thought I had that covered. Is there another way to get rid of air. I will call a plumber and have them diagnose it.
With the original Grundfos, I had one faucet that had a little more delay on the hot water than other faucets so I figured I would go up one size. I also figured the builder bought the cheaper of the two since they did that on a lot of other items. Also, when the plumber came out to my house...
My house was built in 2004 with a UP-10 B5 Grundfos recirculator pump - it had the timer and aquastat and placed at the return hot water line right before the hot water heater. It ran very quiet. Our house is 3000 sq ft and hot water came pretty quick to all rooms - well under a minute, if not...