magna3 25-120n dhw pump

Grundfos MAGNA3 25-120N DHW Stainless Pump

The Grundfos MAGNA3 25‑120N DHW Stainless Pump delivers high efficiency and reliability for domestic hot water systems. Constructed with a stainless steel housing, it ensures resistance to corrosion and is suitable for potable water applications. Equipped with an IE5 energy-efficient motor and AUTOADAPT control technology, it intelligently adjusts performance to match system demand, significantly reducing energy consumption.

This model includes built-in temperature and differential pressure sensors, allowing precise performance control without the need for external components. Bluetooth connectivity enables easy setup and monitoring via the Grundfos GO app. With its compact 180 mm port-to-port design and G 1 ½ threaded connections, installation is quick and seamless in both new and retrofit systems.

Quiet operation, durable components, and minimal maintenance requirements make this pump a reliable solution for domestic hot water recirculation and light commercial environments.

Performance and Specifications

• Rated flow: 5.56 m³/h
  
• Maximum head: 12 m
  
• Temperature range: -10 °C to 110 °C
  
• Energy Efficiency Index: 0.18
  
• Protection class: IPX4D
  
• Installation length: 180 mm
  

Alternative for Sealed Heating Systems

For sealed heating circuits that require a variable-speed solution, the TPE3 100-40 Cast Iron 240Volt Single Phase Heating Pump offers comparable intelligent control and energy performance. This single-stage, close-coupled pump features in-line suction and discharge ports of the same diameter. The top-pull-out design allows the motor, pump head and impeller to be removed without disturbing the pipework, simplifying service and maintenance.

The TPE3 is built with a fan-cooled, permanent-magnet synchronous motor rated IE5. It incorporates an integrated frequency converter and PI controller within the terminal box for continuously variable speed control. The built-in temperature and differential pressure sensors support automatic adaptation to system requirements, making it well-suited for commercial heating systems.

Why Choose National Pumps and Boilers

Customers ordering from National Pumps and Boilers benefit from genuine product availability, expert guidance, and fast UK delivery. Our experienced team offers sizing advice, technical support, and commissioning services. For assistance, reach out through the contact page.

Recommended Products

• Grundfos MAGNA3 25-100N DHW Stainless Pump
  
• Grundfos MAGNA3 25-80N DHW Stainless Pump
  
• Grundfos MAGNA3 32-60N DHW Stainless Pump
  

These alternatives share the same efficient control platform and high-quality construction, offering reliable performance across a range of flow and head requirements.

Order Information

The MAGNA3 25-120N is supplied with a factory-fitted gasket set, quick-connect electrical plug, and installation guide. Orders placed before 3 pm are eligible for next-day mainland UK delivery. Compatible pump valve kits can also be added for quicker installation. For product or technical enquiries, contact the support team through the contact page.