Grundfos Magna1: Electronic Circulators for Large Systems

Grundfos Magna 1 Pumps

Grundfos Magna1 Pumps and Circulators

The efficient and simplified solution for medium-sized systems

The Grundfos Magna1 range is the smart choice for those looking for a high-performance electronic circulator without the complexity of remote monitoring systems. Designed for apartment buildings, schools, hotels, and light industrial installations , this series guarantees reliability and an immediate return on investment thanks to low energy consumption (EEI < 0.20).

Why choose Magna1 for your work?

  • Simple: Intuitive interface with just one button for setup. No complex programming.
  • Versatile: Perfect for heating, air conditioning and domestic hot water systems.
  • Silent: Inaudible operation, ideal for heating systems in residential areas.
  • Fault Relay Output: Allows you to connect a visual or audible alarm to the heating plant to monitor operation.

When to choose a Magna1 over a Magna3?

This is the most frequently asked question among professionals. The Magna1 series is designed to do the same "dirty work" as its bigger brother, the Magna3 (efficiently moving large amounts of water), but eliminates the advanced communication features.

Choose Magna1 if:

  • You need to replace an old UPS pump and want to "set it and forget it".
  • You don't need to connect the pump to a complex building management system (BMS).
  • Are you looking for the best price/performance ratio for a standard condominium system?
  • You want the essential functions: Proportional Pressure, Constant Pressure or Constant Curve.

⚠️ Replacement Guide and Connections (Flanges vs. Threads)

Attention: Pumps in this category can have two types of connection:

  1. Threaded (G): For smaller models (e.g. 25-60, 32-80). They require the classic unions.
  2. Flanged (F): For medium and large models (e.g. 32-120 F, 40-100 F). They are connected via bolts on counterflanges.

Check the pressure rating: If you're replacing a flanged pump, check whether your flange is PN6 (6 bar) or PN10 (10 bar). Many Magna1s have PN6/10 "combi" flanges, but it's always a good idea to check the bolt holes.

Main applications

The Magna1 is a true workhorse, designed to circulate liquids in:

  • Heating systems (condominiums, offices).
  • Air conditioning and cooling systems.
  • Heat pump systems (geothermal).
-51%

Grundfos MAGNA1 25-40 180 pump cod. 99221216

Available
Grundfos MAGNA1 25-40 180 circulator (Code 99221216)


Type: High-efficiency electronic circulator for heating.


Product Code: 99221216.


Wheelbase: 180 mm (Standard).


Connections: G 1" 1/2 (for pipe).


Maximum head: 4 metres.


Advantage: Perfectly replaces old 3-speed pumps.

€387.59
€791.00
-51%

Grundfos MAGNA1 25-60 180 pump cod. 99221217

Available

Grundfos MAGNA1 25-60 180 pump cod. 99221217
Suitable for:


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs
€460.11
€939.00
-34%

Grundfos MAGNA1 25-80 180 pump cod. 99221213

Available

Grundfos MAGNA1 25-80 180 pump cod. 99221213
Suitable for:


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs
€706.86
€1,071.00
-51%

Grundfos MAGNA1 25-100 pump cod. 99221214

Available

Grundfos MAGNA1 25-100 pump cod. 99221214
Suitable for:


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs.
€581.14
€1,186.00
-51%

Grundfos MAGNA1 25-120 pump cod. 99221215

Available

Grundfos MAGNA1 25-120 pump cod. 99221215
Suitable for:


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs
€654.15
€1,335.00
-51%

Grundfos MAGNA1 32-40 180 pump cod. 99221233

Available

Grundfos MAGNA1 32-40 180 pump cod. 99221233
Suitable for:


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs.
€476.28
€972.00
-51%

Grundfos MAGNA1 32-60 180 pump cod. 99221234

Available

Grundfos MAGNA1 32-60 180 pump cod. 99221234
Suitable for


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs.
€557.13
€1,137.00
-51%

Grundfos MAGNA1 32-80 pump cod. 99221235

Available

Grundfos MAGNA1 32-80 pump cod. 99221235
Suitable for:


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs.
€581.14
€1,186.00
-51%

Grundfos MAGNA1 32-100 pump cod. 99221236

Available

Grundfos MAGNA1 32-100 pump cod. 99221236
Suitable for:


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs
€637.98
€1,302.00
-51%

Grundfos MAGNA1 32-120 pump cod. 99221281

Available

Grundfos MAGNA1 32-120 pump cod. 99221281
Suitable for:


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs.
€690.41
€1,409.00
-51%

Grundfos MAGNA1 32-40 F pump cod. 99221263

Available

Grundfos MAGNA1 32-40 F pump cod. 99221263
Suitable for


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs
€524.79
€1,071.00
-51%

Grundfos MAGNA1 32-60 F pump cod. 99221269

Available

Grundfos MAGNA1 32-60 F pump cod. 99221269
Suitable for:


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs
€613.48
€1,252.00
-51%

Grundfos MAGNA1 32-80 F pump cod. 99221275

Available

Grundfos MAGNA1 32-80 F pump cod. 99221275
Suitable for


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating




A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs
€645.82
€1,318.00
-51%

Grundfos MAGNA1 32-100 F pump cod. 99221237

Available

Grundfos MAGNA1 32-100 F pump cod. 99221237
Suitable for:


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating




A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs
€742.84
€1,516.00
-34%

Grundfos MAGNA1 32-120 F pump cod. 99221285

Available

Grundfos MAGNA1 32-120 F pump cod. 99221285
Suitable for


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating



A simple choice for a job well done. The product has an intuitive user interface, particularly suitable for replacing old circulation pumps. The ideal choice for basic functional needs
€1,191.30
€1,805.00
-51%

Grundfos twin pump MAGNA1 D 32-40 cod. 99221238

Available

Grundfos twin pump MAGNA1 D 32-40 cod. 99221238
Suitable for


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating


Double pump performance or reduce downtime during service with twin pump redundancy (manual switchover). A basic product that can be operated from an intuitive user interface.
€874.65
€1,785.00
-51%

Grundfos twin pump MAGNA1 D 32-60 cod. 99221239

Available

Grundfos twin pump MAGNA1 D 32-60 cod. 99221239
Suitable for


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating


Double pump performance or reduce downtime during service with twin pump redundancy (manual switchover). A basic product that can be operated from an intuitive user interface.
€1,023.12
€2,088.00
-51%

Grundfos twin pump MAGNA1 D 32-80 cod. 99221240

Available

Grundfos twin pump MAGNA1 D 32-80 cod. 99221240
Suitable for


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating


Double pump performance or reduce downtime during service with twin pump redundancy (manual switchover). A basic product that can be operated from an intuitive user interface.
€1,067.22
€2,178.00
-49%

Grundfos twin pump MAGNA1 D 32-100 cod. 99221241

Available

Grundfos twin pump MAGNA1 D 32-100 cod. 99221241
Suitable for


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating


Double pump performance or reduce downtime during service with twin pump redundancy (manual switchover). A basic product that can be operated from an intuitive user interface.
€1,218.90
€2,390.00
-51%

Grundfos twin pump MAGNA1 D 32-40 F cod. 99221267

Available

Grundfos twin pump MAGNA1 D 32-40 F cod. 99221267
Suitable for


Air Conditioning - Commercial Buildings


Heating in commercial buildings


Recirculation of domestic hot water


Home heating


District cooling


District heating


Industrial heating


Double pump performance or reduce downtime during service with twin pump redundancy (manual switchover). A basic product that can be operated from an intuitive user interface.
€963.34
€1,966.00