Seems to work
Your review: I am the homeowner, not the installer but so far it seems to work well. We haven't tried all the speeds; the middle speed seems to work for us. We are using this to circulate water through a formerly gravity driven hot water radiator system. When we installed new radiators in the basement, the hot water was bypassing them on the way to the main level. The pump seems to be making sure the water is now circulated through the basement radiators as well. I only chose 4 stars because I'm not the expert, so I don't know if it's "excellent" or not!
Pros: Not sure... I'm not the installer, but seems to be working for us.
Cons: Not sure if there are any...