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In longer domestic return loops and light commercial installations, the available head must overcome the pressure losses from extended pipe runs and multiple fittings. The Grundfos UP 20-45 N provides fixed-speed, continuous operation with a higher head rating than smaller circulators in the range, maintaining circulation performance at the furthest points of the loop.
Fixed-speed and continuous by design, it delivers 38.2 L/Min against 4.5 m of maximum head, powered by a 120 W motor drawing 0.52 A on 1 x 240 V. The available head allows the pump to maintain circulation through longer return lines where pressure losses are higher, supporting larger domestic systems and small commercial kitchens.
The stainless steel body and composite impeller are approved for potable water use, with a liquid temperature range extending down to -25°C and up to 110°C — wider than most domestic circulators — which suits installations exposed to cold plant rooms or unheated risers. Maximum system pressure is rated to 10 bar.
Internal thermal protection is built into the motor rather than relying on impedance limiting alone, and the enclosure is rated IPX2D for contact protection in service environments. At 150 mm port-to-port with 1 1/4 inch connections, it retrofits into the same pipe spacing as smaller models where more capacity is later required.
FEATURES
- Higher head rating provides additional pressure capability for longer domestic and light commercial return lines
- Internal thermal motor protection safeguards the winding against overload in continuous operation
- Stainless steel housing with potable water approval resists corrosion in hot water service
- Wide liquid temperature tolerance from -25°C to 110°C for installations in cold environments
- IPX2D enclosure rating provides protection against dripping water and contact in service environments
- Composite impeller construction offers corrosion resistance in potable hot water applications
- Fixed-speed design eliminates the need for user adjustment during commissioning and operation
- 150 mm port-to-port body dimension supports straightforward retrofit installation
FAQs
General Product FAQs
1. How do I choose the right pump for my setup?
Selecting the correct pump depends on your required flow (L/min), total head (vertical lift + friction loss), and power source. If you're unsure, contact our team and we’ll size the right system for you.
2. Do you offer support with system design or setup?
Yes — we provide expert advice to help you choose, install, and optimise your pump system. Whether it's a simple setup or a custom solution, we’re here to help.
3. Do you offer complete pump solutions or just products?
We don’t just sell pumps — we provide complete solutions. From accessories and control systems to full packaged setups, we can supply everything required to get your system running efficiently.
Shipping & Availability
1. Do you offer Australia-wide shipping?
Yes — we ship across Australia. Bulk or oversized orders may incur additional freight charges otherwise we offer free shipping over $100*
2. How long does delivery take?
Orders are typically shipped within 1–2 business days, with delivery taking approximately 2–7 days depending on your location.
3. What courier or freight companies do you use?
We work with a range of trusted carriers including Australia Post, StarTrack, TNT, and other national freight providers depending on the size and location of your order. This allows us to ensure fast, reliable delivery across Australia, including regional and remote areas.
Warranty & Support
1. Do your pumps come with a warranty?
Yes — all products are backed by manufacturer warranties. Warranty periods vary depending on the brand and product type.
2. What support do you offer after purchase?
We provide ongoing support including:
- Installation advice
- Troubleshooting
- Spare parts supply
- System upgrades
3. What is the warranty process if something goes wrong?
If you experience an issue, simply contact our team with your order details and a description of the problem. We’ll guide you through troubleshooting and, if required, arrange repair, replacement, or manufacturer assessment in line with warranty terms.
Why choose Foundation Pumps?
1. Why choose Foundation Pumps over other suppliers?
We focus on supplying proven, high-quality pump solutions backed by real industry knowledge. Unlike general resellers, we understand how these systems perform in the field and provide honest, practical advice to ensure you get the right solution the first time.
2. Do you offer expert advice before and after purchase?
Yes — we support you at every stage, from selecting the right pump through to installation and ongoing use. Our team is available to assist with sizing, troubleshooting, and system optimisation whenever you need it.
3. Do you stock trusted brands and quality products?
We carefully select and supply pumps from reputable manufacturers known for reliability and performance. Our range includes both industry-leading brands and high-value alternatives that meet Australian standards and conditions.
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