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Your cart is empty.Grundfos SCALA1 99631742 is an all-in-one pressure boosting system designed for domestic and light commercial applications. Ideal for water supply from shallow wells (less than 26 ft) and pressure boosting from city mains, SCALA1 99631742 can also pump from a roof tank, break tank or ground tank. With Bluetooth-enabled connectivity, you can monitor, troubleshoot, and control SCALA1 from your smartphone. Download the Grundfos GO app to any device with an iOS or Android operating system. Save time with installation with an easy 3-step process. Connect the pipes, prime the pump and plug it in. For a fast setup, configure the pump from the pump control panel. For advanced settings, use the Grundfos GO app and follow the guided online configuration. Built-in multi-pump/booster technology enables twin pump connection with joint pump control in either duty/assist or duty/standby mode.
Lailah
2025-08-27 12:14:43
This scala 1 replaced our scala 2. It's doing a fine job 1 month in. Our 2 was leaking internally in less than 3 years. Seems to be a typical problem with the 2, so giving this one a try! It is actually quieter, which has been a nice suprise as well :•) Easy to install and set up. The bluetooth connection is a nice feature as well. Good luck water warriors ;•)
RunningAg
2025-08-26 15:19:39
This was a replacement for a previous model that is no longer manufactured. Product has performed well and provides the needed pressure boost.
Aida Dungan
2025-07-18 17:09:41
I have bought 4 Grundfos pumps over the years, 3 different models. The pumps are well designed and do the job but they develop leaks that must come from the seals (best guess). Then you have to take them out of service, and of course have a back-up pump. So this will be my last. When you contact the manufacturer, they just tell you to get the pump serviced.
ernest taylor
2025-07-17 13:21:20
pump performs as advertised and is super quiet. Would purchase again if needed.
Randoɱ X
2025-07-14 14:42:10
Easy install, Quiet, Great Pressure and Good Price.
Alexander Livingston
2025-06-27 13:11:25
This pump was a breeze to install, was done in about an hour. About 6 months later, I started to hear a strange sound from the pump and called customer service to find out what could be the problem. I was concerned that I had received a dud. I was replacing a 36 year old Grundfos model that had failed, and it's not a good business model for your products to last that long, so I assumed the new one had some planned obsolesce built in.What I got back from Grundfos was MUCH worse...."Good afternoon Mr. (spelled my name wrong)We recommend contacting a licenced plumber for proper diagnosis of the issue with your pump.As part of our business model, we operate through local distributors with whom we maintain a close and collaborative relationship. They are entrusted with handling troubleshooting and customer service on our behalf. Please feel free to reach out to the distributor they may be able to offer assistance with basic troubleshooting before engaging a plumber."Basically, buying this on Amazon and installing it yourself effectively voids the warranty.The problem resolved itself for the most part, but I'm sure this pump won't last nearly as long as the one I replaced. It is quieter performs better than the old model, worthy of 5 stars, however their sleezy customer service cost them 3 stars. Grundfos, do better!
Ken Stromberg
2025-06-13 21:18:31
We were looking for a remotely controlled water pump to supply our house from our water tank. This new Scala 1 pump has been fantastic. The bluetooth control makes it so simple to turn the pump on and off as needed without going outside in the weather or in the dark of night. Pull it up on your phone, connect to the pump in the app and click start, that's all there is to it! We took the advice of one of the seller videos and also purchased flexible 1" stainless tubing so the new connection only took about 10 minutes and we were up and running. Would definitely buy this again if we ever need it but Grundfos pumps last a very long time.
Lewis A. Leslie
2025-05-13 12:14:50
Great product!! Very quiet.
Jack O.
2025-04-29 13:26:11
Scala1 3-45 Used it to replace my 12 year old GRUNDFOS pump. Unfortunately GRUNDFOS have changed the fitting location so not a drop in installation. I also don't like the literature with it- very little useable info- had to find an installation manual on-line. For instance there is a three position "PERFORMANCE" setting located inside that should be checked (I turned mine to positive I/P pressure). A bigger issue was the pump initially just hummed loudly and the lights dimmed- the motor was stuck! The instalation Manual mentioned how to turn the motor over w a screw driver and now it is purring.UPDATE- for several days it would just hum instead of pumping. I had to give it a turn w the screwdriver every time. I was going to return it after Xmas but it is now working perfectly. I suspect the switch for the start capacitor was stuck open. Maybe my tapping the unit free’d it up.
Servais Bernard
2025-03-15 18:49:23
Par contre aucun mode d'emploi pour l'installation. Juste des infos pour la sécurité
Gabriela Saldana Gonzalez
2025-02-07 13:05:56
Perfecto
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