Pumps & Temperature Control Units

Underfloor Heating Pump Units & Temperature Control Units

Shop underfloor heating pump units, temperature control units, mixing units and Grundfos circulation pumps at ThermRite Shop. Our pump units are designed for reliable water underfloor heating performance, helping control flow temperature and circulate warm water through your manifold and pipework.

This collection includes pre-assembled UFH pump and mixing units, heat pump compatible mixing units, single loop temperature controllers and replacement Grundfos UPM3 AUTO circulator pumps. Whether you are installing a new hydronic underfloor heating system or replacing an existing pump assembly, these products are suitable for domestic and trade installations.

Which Underfloor Heating Pump Unit Should I Choose?

Use the table below to compare the pump units and circulation pumps available in this collection.

Product Best For Key Features Shop
High Specification Temperature Control & Circulation Unit Standard water underfloor heating manifolds requiring a reliable pump and temperature control unit. Grundfos UPM3 pump, manifold ready design and temperature-controlled circulation. View product
Heat Pump Underfloor Heating Pump & Mixing Unit Underfloor heating systems connected to heat pumps or lower temperature heat sources. Grundfos UPM3 AUTO pump, heat pump focused design and support for manifolds up to 12 ports. View product
Single Loop Temperature Controller & Pump Assembly Single room, small area or one-zone water underfloor heating installations. Compact UFH mixing unit with Grundfos 3-speed pump for single loop temperature control. View product
Grundfos UPM3 AUTO Circulator Pump Replacing or upgrading an underfloor heating circulation pump. High-efficiency speed-controlled Grundfos UPM3 AUTO pump for UFH systems. View product

Key Features of Our UFH Pump Units

Designed for Water Underfloor Heating Pump and mixing units help circulate warm water through underfloor heating pipework and manifolds.
Temperature Control Mixing units help regulate the water temperature supplied to the UFH system, protecting floors and improving comfort.
Grundfos Pump Options Choose from pump assemblies with Grundfos UPM3, Grundfos UPM3 AUTO or 3-speed Grundfos pump options.
Manifold Ready Selected pump units are designed for connection to underfloor heating manifolds for straightforward installation.
Heat Pump Compatible Options Heat pump focused pump and mixing units are available for lower temperature heating systems.
Trade & Domestic Use Suitable for installers, contractors and homeowners working on water underfloor heating projects.

Pump Unit, Mixing Unit or Circulator Pump?

Underfloor heating systems often need a combination of circulation and temperature control. A full pump and mixing unit is typically used with a manifold to circulate water around the UFH pipe loops while controlling the supply temperature. A standalone Grundfos UPM3 AUTO circulator pump is usually chosen when replacing or upgrading the pump only.

Component What It Does When You Need It
Pump Unit Circulates heated water through the underfloor heating manifold and pipe loops. For most water underfloor heating manifold installations.
Mixing Unit Blends flow and return water to help achieve a suitable UFH supply temperature. When the heat source temperature needs reducing before entering the UFH circuits.
Circulator Pump Moves water around the heating circuit. When replacing a faulty pump or upgrading to a high-efficiency Grundfos pump.

Best Uses for Underfloor Heating Pump Units

New UFH Manifold Installations Use a pump and temperature control unit when connecting water underfloor heating pipework to a manifold.
Heat Pump Systems Choose a heat pump compatible mixing unit for low-temperature underfloor heating installations.
Single Room UFH Projects A single loop temperature controller and pump assembly is ideal for smaller zones or single-room projects.
Pump Replacement Replace worn or failed UFH pumps with a suitable Grundfos UPM3 AUTO circulator pump.

Frequently Asked Questions

What does an underfloor heating pump unit do? An underfloor heating pump unit circulates warm water through the UFH manifold and pipe loops. Many units also include temperature control or mixing components to help regulate the water supplied to the floor.
Do I need a mixing unit for underfloor heating? A mixing unit is commonly used when the heat source water temperature is higher than required for underfloor heating. It helps reduce and control the flow temperature before water enters the UFH circuits.
Which pump is best for underfloor heating? Grundfos UPM3 and UPM3 AUTO pumps are popular choices for underfloor heating because they are efficient, compact and suitable for circulation duties in UFH systems.
Can I use these pump units with a heat pump? Yes, choose the heat pump underfloor heating pump and mixing unit if your system is designed around a heat pump or lower temperature heat source.
Can I replace just the pump? Yes, if your existing mixing unit and manifold are still suitable, you may only need a replacement circulator pump such as the Grundfos UPM3 AUTO pump.