Pump Groups for Heating & Heat Pump Systems

Pump groups are pre-assembled hydraulic assemblies designed to circulate, mix and control water within heating systems. By combining key hydraulic components into a single insulated unit, they simplify installation, improve system efficiency and help ensure reliable heating system performance.

Pump groups are commonly used in air source heat pump, ground source heat pump, gas boiler, oil boiler and biomass heating systems. They play an important role in distributing heated water, managing flow temperatures and supplying the correct temperature to different heating circuits, including radiators and underfloor heating.

Our range includes high-quality pump groups from trusted manufacturers, including Meibes and Flamco, with options for both mixed and unmixed heating circuits. Depending on the model, pump groups may include components such as circulating pumps, mixing valves, isolation valves, thermometers, non-return valves and high-quality insulation to help improve system performance and reduce heat loss.

Alongside our pump groups, you'll also find compatible mixing valves, actuators and other hydraulic control components, making it easy to source everything required for a professional heating installation from one place.

At B.E.E. – The SMART Heating Merchant, we supply high-quality heating products backed by expert technical support, helping installers and heating professionals choose the right solution for every project.

Typical Applications for Pump Groups

Pump groups are commonly used in:

Air source heat pump systems
Ground source heat pump systems
Gas and oil boiler installations
Biomass heating systems
Underfloor heating systems
Radiator heating circuits
Buffer tank installations
Multi-zone heating systems
Commercial heating applications

Need help choosing the right pump group?

Choosing the correct pump group depends on more than just the pipe size. Factors such as your heat source, system flow rate, required flow temperature, heating circuit design and whether you need a mixed or unmixed circuit all play an important role.

If you're unsure which pump group is right for your project, the team at B.E.E. – The SMART Heating Merchant is always happy to help.

Frequently Asked Questions

What is a pump group?

A pump group is a pre-assembled hydraulic assembly that circulates and controls water within a heating system. It combines several key components into one compact unit, helping to simplify installation, improve efficiency and reduce installation time.

What is the difference between a mixed and an unmixed pump group?

An unmixed pump group supplies water to the heating circuit at the same temperature produced by the heat source. A mixed pump group incorporates a mixing valve to blend flow and return water, providing a lower, controlled flow temperature where required, such as for underfloor heating systems.

Are pump groups suitable for heat pumps?

Yes. Pump groups are widely used with both air source and ground source heat pump systems to distribute heated water efficiently between the heat source and the heating circuits.

Can pump groups be used with boilers?

Yes. Pump groups are suitable for gas, oil and biomass boiler systems as well as renewable heating installations. The correct pump group depends on the system design and heating requirements.

Do pump groups include a circulating pump?

Many pump groups are supplied complete with a circulating pump, while others are available without one. Always check the product description or specification to confirm what is included with each model.

Do I need a mixed or an unmixed pump group?

If your heating circuit requires the same flow temperature as the heat source, an unmixed pump group is usually suitable. If a lower, controlled flow temperature is required, such as for underfloor heating, a mixed pump group is generally the better choice.

How do I choose the right pump group?

The correct pump group depends on your heat source, system flow rate, pipe size, required flow temperature and heating circuit design. If you're unsure which model is best for your application, we're always happy to help.

What heating systems are pump groups used in?

Pump groups are commonly installed in:

Air source heat pump systems
Ground source heat pump systems
Gas boiler systems
Oil boiler systems
Biomass heating systems
Underfloor heating systems
Multi-zone heating systems
Commercial heating systems

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Pump Groups for Heating & Heat Pump Systems