I like Grundfos a lot, but the first one of these was DOA, and the second started grinding in the bearings. I was probably using it for too heavy a load, but the online info gave no guidance.

Great little pump ! I've been doing hot tub service for 25 years and this is the most reliable pump. Don't buy a Lang pump by this One you won't go wrong 👌🏻

converted a laing pump to Grundfos with very little difficulty

My original SPA pump was in bad shape , I used this pump and it installed very easy as a direct replacement

This is an affordable spa circulation pump and moves quite a bit of water. I use it with a stainless steel solar heat exchanger. This is my third pump over the last 4 years. Seems like the bearungs don't hold up as long as my other Grundfos pumps, many which have been in service for 10+ years. Perhaps due to the PH in the bromide in the water, I don't know? Hopefully this one will last longer. There's not many pumps in the price range that can do what this little guy does.

Use as a continuous flow pump for my hot tub to replace broken pump. Works great so far and easy to install. Would recommend.

I bought this pp knowing it was not a direct replacement since the last direct replacement pump failed. Had to do some slight modification and movement to new location but it is working well with no issues

Manufacturer said that each pump is tested and should work for a long time.... it didn't work on the beginning... After installation just little humming and getting super hot.... I had to call repair guy because I thought I might have some other issue ... Technician was also frustrated because everything was fine... he took capacitor and found pinched striped wire.... and that was a cause pump didn't work.... after this little repair is working without problem

Pump fixed my problem with my hot tub not heating. I was getting a low flow fault so the heater won't turn on.

Worked great out of the box. Hope it lasts