Boiler cleaning

Annual cleaning prevents bacteria in hot water boilers
To maintain optimal hygiene within the water installation, it is essential to open and clean the hot water boiler on an annual basis. This is crucial not only for corrosion prevention, but also for inhibiting bacterial growth in the water system.
- Mechanical tank cleaning
- Disinfection with chlorine dioxide
- Prevent bacterial growth (e.g. Legionella)
- Protects against corrosion
Tank cleaning involves the mechanical cleaning of the tank surfaces. However, tank cleaning does not completely remove the biofilm that inevitably accumulates on the interior of the pipes.
Combining tank cleaning and disinfection provides effective prevention of bacterial growth within the tank – such as Legionella. Furthermore, performing these measures simultaneously keeps costs low.
Want to know more? Call +45 48 13 44 00 (Mon-Thu 8-16 and Fri 15.30)
Application
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01.
Why tank cleaning?
Over time, impurities such as bottom sludge accumulate in the domestic hot water tank (see Domestic hot water tank), while a layer of limescale and bioslime (biofilm) forms on the internal surfaces and heating elements. Consequently, regular internal cleaning of the hot water tank may be advisable.
If the domestic hot water installation is protected against corrosion by means of an electrolysis or Katolyse® system with an associated service agreement, the cleaning is included in the agreement. However, the need will also exist for tanks without corrosion protection.
02.
Replacement of anodes
If your system is equipped with anodes, these must be replaced when they are nearing depletion. If you have a service contract, we will contact you approximately 3 weeks prior to the scheduled electrode replacement.
03.
Prevent Legionella bacteria
EWGLI (the European Working Group for Legionella Infections) recommends annual cleaning of hot water tanks to remove biofilm and bacteria.
04.
Tank disinfection
The NEW Danish Plumbing Centre guideline 017 describes tank disinfection with chlorine dioxide as the optimal method to prevent Legionella bacteria in the installation.
Do you have any questions? We are ready to provide advice and guidance
Use our chat function here on the page or contact us at +45 48 13 44 00 if you have any questions or would like a visit from our consultants.
Our service center is also in contact with our service vehicles if you need system servicing or emergency assistance.







