Grundfos CM Booster

Love only using and recommending Grundfos pressure pump to all of my customers. We recently fitted a grundfos cm booster and the customer couldn’t believe that it was physically a much smaller pump but it had much more pressure and flow and also much quieter then the old pump. Show details

When we decided to put more water tanks on the house there was no question about the pump we would use. We have had Grundfos pumps here and at a previous home and have never had any issues at all. The new pump was simple to set up and works perfectly as I expect it to do for many years to come. As far as I am concerned the only pump to use is Grundfos.

I had to replace my house water pump at very short notice, and the team at Think Water were fantastic in getting me sorted quickly with a Grundfos CMB5‑46. From install to operation, the pump has been excellent. The Grundfos unit is quiet, reliable, and delivers strong, consistent water pressure throughout the house. Build quality is solid and it… Read more

performs exactly as advertised. It’s been a stress‑free upgrade and a great example of why Grundfos has such a strong reputation. Highly recommended, and big thanks to Think Water for the prompt service and good advice.

Our previous Grundfos has proven to be a reliable water pump for the past 20 years and still going. We had no hesitation to replace with a Grundfos when we needed to upgrade to a bigger pump

Just installed this pump and it has been great, the last one was in use for almost 15 years so there was no question getting another one, runs great and super quiet.

This is a well-built quality good looking unit. It's a lot heavier than I expected - very solid. Installation was simple. Upon switching on I had to do a double take as the pump was so quiet I didn't think it was running at first! much quieter than I expected, we got shown this model as it fit our description for the retic max flow and powerful. Show details

The Grundfos CM Booster has been absolutely everything we needed and more. From the moment it was installed, the difference in water pressure was incredible – it’s consistent, strong, and makes every tap in the house feel brand new. The pressure is fantastic, whether we’re running the shower, washing machine, or garden hose at the same time – no… Read more

more frustrating drop-offs or weak flow.

It’s also impressively quiet and smooth compared to other pumps we’ve used, and you can really tell the build quality is top-notch. The automatic controller makes it super easy – it just works when you need it to without any fuss.

Overall, this pump has exceeded expectations. Reliable, powerful, and well worth the investment – I couldn’t recommend the Grundfos CM Booster more highly!

These pumps are a well built quality unit. It's a little heavier that I expected - very solid. Installation was simple. The pumps are much quieter than I expected. The pump is boosting an 8” raw water line on a wharf to maintain water to 3 crib facilities with ease.

First impressions are that this is a well built quality unit. It's a lot heavier that I expected - very solid. Installation was simple. On switching on I had to do a double take as the pump was so quiet I didn't think it was running at first! But yes it was running, much quieter than I expected. Time will tell just how good it is but initial impressions are that it is worth the money. Show details

Purchased a new CMBASIC 3-37 pump last month for a my new build. Installation was easy and works flawlessly. Existing house I installed the exact same pump and was still running perfectly when sold after 17 years a true testament to the quality of Grundfos pumps. Show details

This Grundfos CM Booster pump has replaced a 45 year old Onga. I was amazed at its build quality and ability to pump a long distance with a high elevation. Being on a rural property, the water pressure in our house now is similar to what we were having via mains pressure in Melbourne. Can recommend very highly. Show details

Living at the top of a hill, we rely on a good water pump to maintain steady flow and pressure throughout the house. We previously had a no-name Chinese pump, which did the job for a while but wasn’t very reliable. Recently, we upgraded to the Grundfos CMB 5-46 pressure pump, purchased from ASC Water Tanks. The pump arrived quickly, although… Read more

unfortunately, it was damaged in transit. That said, customer service was excellent—they promptly arranged a replacement, which also arrived without delay. Installation was straightforward, and since switching over, we’ve noticed a consistent and strong water pressure throughout the house. One small downside is that the pump doesn’t offer the option to adjust the switch-on/off pressure, which would’ve been handy. However, overall, it’s a high-quality pump and a significant upgrade from what we had before.

Grindr’s cm boost pump – Compact pump easy setup and good water pressure Excellent product Now have 2 setup 1 for rainwater and one for river water irrigation Show details

Whole house water supply solution – Great machine, reliable, and good price. We did a lot of research before purchasing and had the CMB SP 5/47 recommended. However when we went to purchase that machine two differing companies suggested for our application the CMBasic 5/46 was a cheaper option. The main difference being we have the pump at the same level as the supply tank and do… Read more

not need the suction the 5/47 offers. Plus the pump will be covered so the cast endcaps and corrosion won't be an issue. Internally they are the same. Basically the performance will be the same, more than adequate for our two bathroom home as the main water supply. Saved $400 on the purchase price. Already have a Grundfos CMB SP pump at the bottom tanks which has run flawlessly for many years to expect the same here.

Grundfos CMB 3-37 – Purchased this Grundfos water pump on recommendation from our plumber to replace an existing unbranded unit. The unit is installed on rain tank supply to shed bathroom and garden areas. Very happy with the extra pressure for garden spraying. A lot quieter operation all round. Would recommend this product!! Show details

Pressure plus! – This Grundfos pump has been the answer to our irrigation issues. Great amount of pressure and is proving to be very reliable. Have recommended this pump to our neighbors. Show details

Great product and quality service – This is my second grundfos pump. I am very happy with this product and its performance and wouldn't buy any other brand of pump. Highly recommend it. Show details

Grundfos Booster Pump – Recently purchased a Grundfos CMB5-46. After owning a Grundfos pump since 1986 I had no hesitation in buying another one for our cottage. The pump was delivered promptly from ASC Water Tanks. I look forward to another 30 plus years of trouble free usage on our new Grundfos Booster Pump. Show details

New pump – We’ve recently purchased this pump for our homes water tanks and so far have been happy with its performance. The most noticeable thing is how quiet it is when running. The price point was very good too. Show details

avoid computerized models – Bought this to replace one of their computerized variable speed pumps that failed after just 4years. This one uses the proven PM1 controller that we have on other Grundfos pumps that are still working after 20+ years. Show details

Excellent history of reliable service from Grundfos – This seems to be a very good pump - quieter than I expected & delivers good pressure and volume . Staff at ASC Water Tanks were very helpful & informative about product & installation. Hoping this performs long term as well as my last Grundfos CH2-50 pump which I purchased 36 years ago and only recently recently replaced! Show details

Reliable and hard working – Efficient water pump that handles an 11 metre rise from the tanks to the top bathroom with ease. Auto stop/ start is a great feature Show details