For professionals and homeowners tired of complicated setups and noisy, energy-guzzling pumps, the Grundfos MAGNA1 25-40 is the answer. It’s the straightforward, reliable circulator pump designed to make your life easier, whether you’re tackling a commercial heating system or a domestic hot water setup. Simple, efficient, and built to last, it’s the no-fuss solution you've been looking for, brought to you by National Pumps and Boilers.

The Smart Choice for Modern Heating and Cooling

When you need a pump that just works, the Grundfos MAGNA1 25-40 is your trusted partner. It’s designed with simplicity at its core, saving you time and hassle. We know that for an installer, time is money, and for a property owner, reliability is everything. This pump delivers on both fronts.

Forget complicated setups. The intuitive, one-button interface means you can install it in minutes, not hours. This makes it the perfect one-for-one replacement for older circulators in any central heating system. Its maintenance-free, canned-rotor design offers true fit-and-forget reliability, letting you move on to the next job with confidence. For more advanced setups, the pump offers basic system control and monitoring, communicating via a fault relay and a digital start/stop input for straightforward integration into a building management system.

The MAGNA1 is a versatile workhorse, ideal for basic performance needs in a huge range of heating and cooling applications, including:

• Commercial air conditioning & heating
• Domestic hot water recirculation & heating
• District cooling & heating
• Industrial heating

With nine control modes, you have the flexibility to match the pump’s performance to the system’s demands, ensuring optimal comfort and efficiency. Best of all, it delivers whisper-quiet operation and is highly energy-efficient, helping to slash energy bills thanks to its compliance with EuP 2015 standards. This pump is a standout product in our range of commercial circulators, offering an unbeatable blend of performance and value.

Technical Specifications

Product Number: 99221216
 Max. Head: 4 m
 Max. Flow: 6.2 m³/h
 Power Input (P1): 9 W to 56 W
 Voltage: 1 x 230 V
 Port-to-Port Length: 180 mm
 Pipe Connection: G 1 1/2"
 Max. System Pressure: 10 bar
 Liquid Temperature: -10 °C to +110 °C
 Energy Efficiency Index (EEI): ≤ 0.20
 Net Weight: 4.4 kg

Don't forget to grab the right fittings for a seamless installation. We stock a full range of compatible pump valves and unions to get you started.