I am a professional plumber. I have had call backs and problems with every scala 2 pump I installed. I recently had to remove one of these pumps because of a chronic thump noise when the pump shut off. I will have to eat the cost. Grundfos know of the problem and waste more time sending out parts that dont fix the problem. They refuse to issue a refund.
Grundfos used to be reputable. Do not buy this junk pump.

1st one replaced about 1 yr in. Got quite noisy. The replacement has lasted 1.5 yrs. Pump tries to engage but nothing. Just a small noise when trying to start

I had purchased 10 of these for various residential apartment and small home projects. Installed them all So far in the last 1 YEAR, I had 7 of the Fail, the last 3 are on thier last legs making strange sounds and water pressure unstable. I dont know what kind of cheaply made or poorly designed pump Grundfos has produced here however these are total junk. I would SERIOUSLY reconsider buying any products from Grundfos again, back to Goulds for me.

I have purchased and installed 12 of the Scala2 pumps over a 18month period and I have had 3 warranty claims, one leaking from inside the plastic casing and two with power fault issues. The warranty process is not prompt in New Zealand so don’t expect much support from the supplier .

Seemed to be on more than it needed to.
After 14 months got noisy and then failed completely.
Warranted without question and replaced with a bigger more basic model
Think this variable frequency drive aint so good!

I purchased a Scala2, being expensive I expected a long life. It was quite for about 12 months gradually getting noisier until the pump section fell apart internally. The dealer replaced it and now about 14 months later the new one became noisey and soon seized, I have yet to call the dealer.
Only two of us in the house and the water supply is rain water and only into the house, garden is town supply.
My previous pump, a Dab is now back on duty. I also think the operation of the Grundfos uses more electricity then a more conventional pressure pump.

Great for the first year, progressively got worse until 6 months out of warranty it's pumping at about a quarter volume even after trying everything in the manual. Paid $800 for it because the sales guy said it would last for many years. Checked with them - they stopped selling because of customer complaints and no buy-in from Grundfos! It's on its way to the tip, replaced with a $169 eBay model that is fantastic so far.

Problems from first day, wouldn't draw water from my in ground tank. Had to put on top of tank to work, less than 3 metres. Stopped working after a week, returned to shop to find initial factory settings were not as claimed. Problems with constant cycling of pump. Had to turn down to minimal pressure to keep it going at all. Finally after 2 years and 6 months it dies. Service provider says not viable to repair and that they stopped stocking pump after repeated problems for customers. Six months out of warranty.