How often do you check the temperature of the hot water?

By keeping track of the temperature of the hot tap water, you reduce the risk of being infected by the legionella bacteria. The disease is uncommon, but those affected can develop severe pneumonia. Here a few things will have to keep track of the currently correct temperature of the hot water.

  • It is important to check both R-value, set and measured value at regular intervals. Problems with VVC can include poor flow, which can be due to a defective or incorrectly set circulation pump for VVC or deposits in the pipe system.
  • Stagnant water in a water heater must have a temperature of at least 60 degrees. In modern heat pumps, there are so-called legionella runs when the water is heated up to between 60 and 70 degrees every 14 days.
  • At the tap, the hot water must be a maximum of 55 degrees so that you don’t burn yourself, and the cold water must be colder than 18 degrees. The easiest way to check this is to measure with an ordinary thermometer at the tap point.
  • Towel dryers and underfloor heating do not have a high enough water temperature and should therefore not be connected to the pipe system for VVC.
  • For preventive purposes, so-called dead ends in the pipe system where there may be stagnant water must be removed.
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Here you can read about how we solve problems in waterborne heating systems with heat pumps or district heating. You’ll also get tips on how to run a heating system safely and efficiently.

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