How is underfloor heating maintained?

Underfloor heating is a popular and efficient way to heat a home, but regular maintenance is needed to keep it working well and to make it last. This article explains the maintenance tasks an underfloor heating system needs, how often to do them, and when to call in a professional.

Regular maintenance tasks

Underfloor heating maintenance can be divided into a few routine tasks that keep the system running efficiently and help prevent problems before they start:

• System inspection: Check regularly that all components are working properly, paying special attention to the piping, pumps and thermostats.
• Air removal (bleeding): Air can collect in the system and reduce its efficiency or cause uneven heat distribution. Bleed the system regularly so it keeps working optimally.
• Water quality check: The quality of the water circulating in the system matters. Its pH value and hardness should be checked and adjusted if needed.
• Cleaning the filters: If the system has filters, clean or replace them regularly so they do not clog and reduce performance.
• Checking for leaks: Leaks in the pipework can cause serious damage. Inspect for leaks regularly and repair any you find right away.

Flushing and cleaning the pipework

Over time, impurities and sediment can build up inside the pipes. Flushing removes them and is normally done by shutting off the system, draining the water, connecting a flushing device and running clean water through the pipework until it comes out clear, then refilling the system and checking the pressure.

If a lot of dirt or limescale has built up, chemical cleaning may be needed. This is best left to a professional, since a cleaning agent used incorrectly can damage the piping. The process typically involves emptying the system, circulating a cleaning agent for a set time, and then rinsing the system thoroughly with clean water before refilling it and checking the pressure.

How often and when to call a professional

The right maintenance interval depends on the type of system and how much it is used. As a general rule, have the system checked and serviced at least once a year; older systems or ones under heavy use may need attention more often.

You can do many of these tasks yourself, but it is worth using a professional for more complex inspections, repairs and chemical cleaning. A professional can also spot problems early and advise on improvements. Careful, regular maintenance keeps an underfloor heating system efficient and long-lasting, and improves both comfort and energy efficiency.