110-V Grundfos Circular Pump

The three-speed switch is perfect for dialing in the flow on my radiant loops, and it runs whisper-quiet compared to the old unit. Installation was straightforward since it matches the same flange spacing, and the recirculation function handles our hot water line without any fuss.

Took about twenty minutes to swap out my old one and the three-speed switch makes dialing in the flow for our radiant loops pretty intuitive. It's been running whisper-quiet for a month now, and the hot water recirculation side keeps the taps warm instantly.

Set it to the middle speed and it’s been circulating our floor loops quietly for two months straight, no hiccups. The three-speed option gives good flexibility for balancing the system without fiddling with valves. Plenty of head for a two-story house.