SKU: 84339906755

Grundfos 15-20 CIL2 Solar Hot Water Circulation Pump

$148.50 $165.00
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Description

Grundfos 15-20 CIL2 Solar Hot Water Circulation PumpOverview The Grundfos UPS 15 20 CIL2 solar hot water 3 speed circulation pump is designed from ground up as a low energy and high efficiency solar pump suited to Australian market's open loop solar hot water systems. The Grundfos 15 20 CIL2 solar hot water pump is one of the most common oem solar hot water pump used in Australia in many pumped solar hot water systems offered by Apricus, Chromagen, Neopower, Aestiva and Therman. This Grundfos 15 20

Overview

The Grundfos UPS 15-20 CIL2 solar hot water 3 speed circulation pump is designed from ground up as a low energy and high efficiency solar pump suited to Australian market's open loop solar hot water systems. The Grundfos 15-20 CIL2 solar hot water pump is one of the most common oem solar hot water pump used in Australia in many pumped solar hot water systems offered by Apricus, Chromagen, Neopower, Aestiva and Therman.

This Grundfos 15-20 CIL2 solar hot water pump by All Plumbing Online is supplied with a pair of AVG pump unions. The AVG pump unions reduce the pump's BSP 1" thread to 1/2" with compression fittings, which can readily screw to other valves/fittings as a male thread or be connected to standard 1/2" copper pipe. The AVG pump unions' loose nuts make future pump extraction easy during a service or replacement, without needing to touch other connected plumbing works. 

The Grundfos 15-20 CIL2 pump features 3 power settings of 20W, 25W and 30W for the added flexibility. The pump is IPX4 tested for weather resistant in outdoor conditions. The Grundfos 15-20 CIL2 pump is supplied with a 500mm pre-installed electrical lead with a standard 3 pin plug for a hustle free plug-play style installation. 

Due to its relatively low cost and reliability, The Grundfos 15-20 CIl2 pump is a also a popular replacement solar pump to Grundfos single speed UP15-14B PM pump used in Dux and Rinnai.

In a direct flow open loop solar hot water system in Australia, both solar panels and water tanks are pressurized by the mains supply. The pressurized water is present in the solar panels even when the pump is not pumping. Only a low power circulation pump such as Grundfos 15-20 CIL2  is required in such systems. The pump's job is only to overcome the friction and bends in the pipe work, but not to pump heads. Many customers ask if this pump can pump water from wells or swimming pools or saunas to the solar panels. The answer is no, as a more powerful pump will be required to pump heads in these applications. 

 

Installation Notes

- A solar rated check valve MUST be installed above the pump to protect it from the solar panel's back flow. During warranty claims, the photo of the installation MUST be provided to identify this check valve or the warranty will be denied. The back flow in summer from the stagnant solar panels can reach up to 180 degrees for flat plates and 220 degrees for evacuated tubes. Without the check valve, the back flow will burn and deteriorate the internal pump seals. It will appear as a leaky pump if the water chamber seal is broken or it will appear as an electrical fault if the electrical motor side seal is compromised. All Plumbing Online recommends AW or AVG solar check valves, sold separately or as kits with this pump. 

-The Grundfos 15-20 CIL2 pump propeller shaft bearings are water lubricated and must be parallel to the ground level. It is ideal to run the pump vertically, with the water flow from bottom to top. When running the pump left to right, the bearings may be at risks of being starved of water lubrication and wear out prematurely.

- For most installations up to 2 story house, speed 1 is sufficient. Spead 2 or 3 is only needed for 3 stories or extra long pipe runs. The idea is to achieve 1-2L/min flow rate with minimum power setting. During my engineering work for Apricus and many other solar hot water manufacturers, this flow rate is found to be most efficient due to the laminar flow property of the water and hot water stratification effect in the water tank. A faster flow will cause turbulence inside the panel's pipe work reducing the heat transfer. A faster flow will also stir up the water tank more, causing the colder water at the bottom to mix with the usable hot water at the top, reducing the overall hot water delivery. A flow meter is sold separately or as a kits with the pump by All Plumbing Online and this can set the flow right for best efficiency. 

 

Technical Details

  • Pump Manufacturer: Grundfos 
  • Model: UPS 15-20 CIL2
  • Thread Size: 1" BSP (25mm) Male MI thread
  • Physical Thread Measurement: 33.249mm (Refer to the BSP Sizing Chart in the photo gallery)
  • Voltage: 220-240V
  • Power Rating: 20/25/30W
  • Pump Class: Class F
  • IP Rating: IPX4D, suitable for outdoor
  • Max Water Pressure: 1.0Mpa
  • Electrical: 500mm lead and 3 pin, including earth
  • Pump Unions Manufacturer: AVG
  • Thread Size: BSP 1" loose nuts to 1/2" compression fittings with copper olives
  • SKU: G-15-20-CIL2-AVG-U


Package Contents

- Grundfos 15-20 CIL2 Pump with AVG Unions.

- Package Weight 1.7kg

 

Postage

Dispatch next business day. Free local pick up is available.

 

Warranty

2 year replacement (parts only) warranty from purchase date is offered by All Plumbing Online.

 

Return Policy

30 days worry free return is offered. All returned items must be complete and in its original packaging. 

 

Contact Us

All Plumbing Online is a local business based in Brisbane, run by an experienced engineer who works as a consultant to the plumbing industry at manufacturers' level. I used to operate my own plumbing company also and can answer any of your plumbing related questions, such as fitments, sizing or just chatting in general for advice. Feel free to drop me an Ebay message.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 84339906755

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Loves_2_read
Cuba, US
★★★★★ 3
Oversized
Size: Queen (Pack of 2), Color: White
I have chronic neck pain. I am forever buying new pillows. Sometimes I think I found the perfect pillow but then three months later they’re losing their loft. I thought I would give these pillows to try since the stuffing is removable. Now these pillows are really oversized. To the point where I thought that they had sent me king-size pillows but I double checked the packaging and they were Queen. I ended up having to buy king-size pillowcases for them because they just barely fit in the queen size and the pillowcases would always end up pulling back from the edge. So that’s a negative one star there. Now I’ve been sleeping on these pillows for a while and they have held up well. I did end up removing some of the stuffing because it was just too much. I’m a side sleeper and when I use this pillow, it does a good job of keeping my neck in alignment. However, the pillow tends to migrate up as I sleep. Or I tend to slip down off the pillow, either or. So that’s why I’ve removed a second star. Maybe if I removed more stuffing that wouldn’t happen, but then I feel like the loft would be too little. I will say that these provide great support when sitting up in bed reading or watching TV. So would I buy them again? Probably not. Am I going to keep using them? Yes
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 23, 2025
N
Verified Purchase
Nick
Boise, US
★★★★★ 5
Amazing - Stop Scrolling and Buy This Pillow
Size: Queen (Pack of 1), Color: White
I have been an Amazon customer ever since the very beginning, and this is my first review. Not because I haven’t purchased tons of amazing things (and a few bad ones), just never felt the need. However, I researched pillows for longer than I care to admit, and decided on this one. I’ve had it for about six months and absolutely love it. No lie, I genuinely look forward lying my big head on it after a long day. I am a side sleeper, but flip flop all around through the night and it’s great in every position. Pros: Stays nice and cool, which is soothing regardless of the time of year. Has a sort of quilted textured pattern on the zip up cover, gives it a luxury feel, that breaths nicely even when a pillow case is added. The fill is fully adjustable to your preference. I knew it came with extra filling but was worried it would not be enough. Wrong. It was very full and I ended up taking some out until it was perfect. It comes vacuum sealed and suggests it may take some time to fully take shape. However, I found it to be about 90% almost instantly and was sleeping on it a couple hours later. There was no unpleasant scent sometimes associated with memory foam items. The foam itself is very nice, a mix of what appears to be shredded and cotton candy cloud like. Very brilliant idea, as it is somehow supportive, soft and firm all at once. The affordability of this pillow compared to some of the others in this category can’t be overstated. Oh, and the packaging was very thoughtfully and securely done. If you are like me, an over thinker, I would suggest just taking this for a spin. It’s amazing. I’m not a bot, or working for the company. I’m just truly satisfied, love this pillow, and have been sleeping great.
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Reviewed in the United States on April 6, 2026
K
Verified Purchase
k25
Chelsea, US
★★★★★ 5
It's the perfect pillow!
Size: Queen (Pack of 1), Color: White
I purchased this pillow specifically for its customizable fill feature, which allows you to add or remove stuffing to suit your personal comfort needs. Due to the unique curvature of my cervical spine—forward at the neck rather than backward—I require a soft, semi-flat pillow rather than one that is thick or firm. Additionally, I often experience ear discomfort by morning, so a gentler surface is essential. Upon adjusting the fill, I was pleasantly surprised by the generous amount of stuffing included. There was enough to fill an additional pillowcase, and I estimate it could easily create four to five more pillows. The ability to modify the pillow’s firmness at any time is an outstanding feature that makes it adaptable for a wide range of preferences and sleep styles. This pillow has exceeded my expectations in both comfort and versatility. I highly recommend it to anyone seeking a personalized sleep experience.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2026
N
Verified Purchase
NC Coach
Carnegie, US
★★★★★ 4
Good quality pillows overall
Size: King (Pack of 2), Color: White
Got a set of these for my wife and myself as we were struggling with our old pillows. These have some really good qualities and some things we'd like to see changed. First, the good: These are look and feel like they are high quality and made with good materials. The foam itself has a very nice feel to it. We love the fact they are adjustable to add or remove foam. They come with a pretty substantial amount already in the pillow. We appreciate the CertiPur certification. Now the improvements or changes we'd like to see: The foam, while feeling great, doesn't bounce back well if you scrunch your pillows, and so every day you have to fluff and reshape the pillow, moreso than some other memory foam pillows we've owned. One side of the pillow is cooled and you can feel that even through the pillow case, and that's a great thing. However, one side is not cooled and we'd have preferred if both sides were made of the cooling material. Overall, these are good pillows and we are not disappointed with the purchase. They are not, however, our perfect pillows (which do seem hard to find), and at some point in the future will probably make their way to the guest bedroom. We would rate them as some of the better pillows we've tried and feel most people would probably like them.
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Reviewed in the United States on December 19, 2025
A
Verified Purchase
Amazon Customer
Houston, US
★★★★★ 5
Perfect Pillow
Size: Queen (Pack of 1), Color: White
These are the best pillows ever. You can adjust the firmness or softness to whatever you want. For years i used a soft latex pillow , which you cant get anymore. I will never use another pillow. I have purchased 6 of these after the first one. You pick your own comfort level. Best ever. No more neck aches.
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Reviewed in the United States on May 17, 2026

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