REHAU Pre-Insulated Pipe

At Underfloor Store, we supply REHAU pre-insulated pipe for applications ranging from domestic air source heat pump connections to large district heating and commercial heat networks.

Manufactured using durable PE-Xa carrier pipes and advanced insulation technologies, REHAU pre-insulated pipe provides a flexible and reliable way to transport heating water between buildings, heat sources and plant rooms while helping to minimise heat loss.

The range is available in UNO and DUO configurations. UNO contains a single carrier pipe, while DUO combines the heating flow and return pipes within one insulated outer casing.

Why Choose REHAU Pre-Insulated Pipe?

• - Suitable for heat pumps, district heating and renewable energy systems
• - High-performance insulation helps reduce heat loss
• - Flexible coiled pipework for easier handling and installation
• - Long pipe runs can reduce the number of underground joints required
• - Durable and corrosion-resistant PE-Xa carrier pipes
• - Available in UNO single-pipe and DUO twin-pipe configurations
• - Wide choice of carrier-pipe sizes
• - Compatible end caps, connection fittings and jointing accessories available
• - Backed by established REHAU engineering and technical expertise
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Which REHAU Pipe Range Is Right for Your Project?

REHAU offers three specialist pre-insulated pipe systems. The right choice will depend on the size of the installation, required thermal performance, pipe dimensions and the level of installation flexibility needed.

REHAU RAUVITHERM

RAUVITHERM is a lightweight and highly flexible pre-insulated pipe system suited to air source heat pump connections and smaller heat networks. Manufactured in the UK, its flexible PE foam insulation makes it easier to handle and route around changes in direction.

Ideal for:

• - Air source and ground source heat pump connections
• - Domestic renewable heating systems
•  Garages, annexes, workshops and outbuildings
•  Small communal and district heating schemes
• - Biomass heating installations

REHAU RAUVIPEX

RAUVIPEX is a modern, versatile pre-insulated pipe system offering a strong combination of thermal performance, flexibility and durability. Its fine-pored PUR foam insulation, longitudinal watertightness barrier and robust corrugated outer casing make it suitable for demanding underground heating and cooling networks.

Ideal for:

• - Heat pump connections
• - District and communal heating networks
• - Commercial developments
• - Heating and cooling distribution
• - Low-carbon and renewable energy infrastructure
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REHAU RAUTHERMEX

RAUTHERMEX is designed for larger district heating and commercial heat network applications where minimising heat loss is particularly important. It combines durable PE-Xa carrier pipes with high-performance bonded PU foam insulation, making it well suited to longer pipe runs and larger network loads.

Ideal for:

• - District heating networks
• - Commercial and residential developments
• - Multi-building heating schemes
• - Remote energy centres and plant rooms
• - Large renewable heating projects
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UNO or DUO Pre-Insulated Pipe?

UNO pipe contains one PE-Xa carrier pipe within an insulated outer casing. Separate UNO pipes are normally required for the heating flow and return, making this configuration useful for larger pipe sizes or routes where the two pipes need to run separately.

DUO pipe contains two carrier pipes within one insulated casing, allowing the heating flow and return to be installed together. This can reduce the installation space required and simplify pipe routing.

REHAU Accessories and Fittings

Complete your installation with compatible REHAU accessories, including rubber end caps, dry end caps and male BSP screw connection fittings. Accessories must be matched to the selected pipe range, UNO or DUO configuration, carrier-pipe size and outer-casing diameter.

Typical Applications

• - Air source heat pump connections
• - Ground source heat pump systems
• - District and communal heating networks
• - Biomass heating systems
• - Commercial and residential developments
• - Schools, care homes and public buildings
• - Remote plant rooms and energy centres
• - Heating supplies to garages, workshops, annexes and outbuildings

Need Help Choosing?

Not sure which REHAU pre-insulated pipe system or accessory you need? Contact our team for help identifying the most suitable product range and compatible fittings for your application.

Please note: Pipe sizing should be confirmed against the system design, required flow rate, pressure loss and operating temperature.