bathroom underfloor heating

Underfloor Heating Manifold

Warmup’s S3 Manifold provides flexible zoning and water regulation for up to 12 water underfloor heating circuits. Associated components such as the Mixing Unit, Actuator, Isolation Valves and In-Wall Manifold Cabinet are available separately.

stainless steel manifold

S3 Manifold

Made from a single piece of 304-grade, laser-etched Stainless Steel for high corrosion resistance

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S3 Mixing Unit

Added to the Manifold whenever local water temperature regulation or hydraulic separation of the primary circuit is required.

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S3-isolation valves manifold system

S3 Isolation Valves

Isolation Valves allow for the Manifold to easily be isolated from the primary circuit.

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S3-actuator manifold system

S3 Actuator

The Actuators are used in combination with the Warmup S3 Manifold to control the circuit valves.

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In wall manifold cabinet

In-Wall Manifold Cabinet

Available in multiple widths to suit the full range of Warmup S3 Manifold sizes

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underfloor heating modern living room

How Does a Manifold Work?

Water floor heating systems feature pipework installed below the floor’s surface through which heated water is gently pumped, radiantly heating the space above. Manifolds are a crucial part of these systems.

They connect the floor heating pipes to the heat source, such as the gas boiler or ground / air-source heat pump, helping to circulate the heated water whilst managing pressure, flow-rates and temperature regulation.

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Warmup pex-a pipe


Warmup systems come with a choice of 3 pipe types; PEX-A, PE-RT and PE-RT/AL/PE-RT - tailored to your specific installation and budget.

hydronic underfloor heating control centre

Control Center

All hydronic systems require a control centre that works with the thermostats and heat source, such as a boiler or heat pump.

floor heating controls 6ie


Choosing the correct control system is crucial in ensuring that your heating system works in the best possible way, efficiently and easily.

Related Articles

So, you’ve decided you want to heat your home with UFH but how do you choose between an electric and water-based system?


Learn how much more energy-efficient UFH is compared to traditional central heating systems.

Heat pumps

Did you know that UFH is ideal for use with heat pumps? Find out more in our expert guide.

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Get a Free Quote and Order Online Today

Use our online quoting tool to find the best hydro underfloor heating system for your project and purchase it directly from Warmup.

Quoting Tools: instant, accurate, flexible

Warmup offers an extensive range of electric and water floor systems compatible with all floor types, rooms and projects.

Electric Systems

  • ✓ Ideal for zones less than 25m²
  • ✓ Ideal for single rooms
  • ✓ Does not alter floor levels
  • ✓ Great for renovations

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Water Systems

  • ✓ Ideal for larger zones over 25m²
  • ✓ Rapid auto heat loss calculations
  • ✓ Compatible with existing central heating systems
  • ✓ Great for new-builds

Water Systems Quote & Buy
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For areas of 24m2 or more, use our full quoting system
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