(I have used this pump since late October) Thank goodness for this pump. Its been a few cold nights here in the blue ridge mountains, and when my pump went out on my water stove i thought i was gonna half to spend a fortune to get another one. This pump has done great its quite and it move more then enough water to keep my house warm. I'd recommend it to anyone that needs a pump for there water stove. Quality 10/10 - Price 10/10 Shipping 10/10 it arrived a day early witch helps me a lot.Worked perfect. I haven't tore the other 1 down yet to see the reason for the failure. Judging by what I see so far it appears to be age and water erosion. Water and the elements are unkind to ALL things.Excellent little pump for each loop in my in floor hydronic heating system. A little bit noisier than Grunfos but less expensive. Still working great in it's second heating season. I will buy more of these pumps.What’s important to know about this pump is the propeller blades in the pump are metal as with Armstrong(they cost more) pump has plastic blades and they wear and melt away with hot water line.Fit perfectly. Easy to installPump works great