Maximizing Efficiency: Understanding the Length of Loops in a Water Underfloor Heating System

Length of loops in underfloor heating

Design and execution errors have a significant impact on the quality of underfloor heating systems. Before installing underfloor heating, it is worth familiarizing yourself with professional installation guidelines.

How long should underfloor heating loops be?

Incorrect length of PEX or PERT pipes significantly affects the operation of underfloor heating. So what is the correct length of the pipeline? To ensure the best performance of underfloor heating, it is advisable to use several short loops of pipes instead of one long loop.

Excessively long underfloor heating loops cause high hydraulic resistance. Some heat pumps may be insufficient to heat several meters of pipes. This can lead to problems with the proper and efficient operation of heating, and the underfloor heating system may simply stop working.

Length of loop pipes in underfloor heating

A heat pump as a heat source will definitely cope better with heating several short loops than one long loop. For a goo heating performance for 16mm pipe each loop shouldn’t be longer then 100, 110m. For low profile systems with 12mm pipes used, maximum pipe length is 80m for each circuit.

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