No chance for corrosion

Smooth operation for many decades: this is a fond wish that is not always easy to achieve in HVAC. For example, the steel pipes used in many air conditioning systems are susceptible to corrosion from the outside. Condensation, which forms between the insulation and the pipe, attacks the pipe surface and decomposes it. In heating systems, corrosion inside the pipe is a major problem: it leads to pressure losses and increased energy consumption from the pumps.

With aquatherm blue pipe, however, corrosion damage is a thing of the past. aquatherm blue pipe is made from 100 percent corrosion-resistant polypropylene. This considerably extends the service life of an air conditioning or heating system.

Thanks to its inherent heat- and sound-insulating properties, aquatherm blue pipe requires significantly less insulation than metal pipes to protect against heat and cold loss or condensate formation. This makes it ideal for heating and cooling systems from commercial buildings to single-family houses. Its lighter weight also facilitates easier and quicker installation, offering significant time- and labor-savings.

Product benefits

aquatherm blue pipe:


  • high temperature resistance
  • high pressure capacity
  • corrosion resistant
  • chemical resistant
  • lower weight than metallic materials
  • less insulation needed compared to metallic pipes

Further information


aquatherm pipes and fittings are connected by heat fusion, which creates a homogeneous, cohesive unit with no leak paths. Heat fusion connections are stronger than the pipe itself, providing lasting safety at these critical points of a piping system. A properly executed aquatherm fusion creates a permanent leakproof connection.

Depending on the dimensions of the pipe, socket fusion, butt fusion or electrofusion is used.


Technical catalogue

For detailed information about our products, please refer to the technical aquatherm blue pipe catalogue. 

Technical catalogue

For detailed information about our products, please refer to the technical catalogue.

Pipe friction loss

Further information about the friction loss of our PP-R piping systems is available below.