How do I change a water filter

Change the water filter at the house connection - how, how often, when?

Change intervals

There are no prescribed change intervals for the house water filter. In the case of filters that cannot be backwashed, a visual inspection should be carried out approximately every 2 months. If there is visible contamination, the filter element must then be replaced.

Backwashing every 2 months is recommended for backwashable filters. Backwashing must be carried out exactly as described by the manufacturer in the operating instructions, as this is the only way to remove all accumulated particles.

House water filter with additional functions

In some cases house water filters are equipped with additional water filters in order to improve the quality of the water. In most cases, these are activated carbon filters and other ceramic filter elements.

These filters have to be changed very often, otherwise there is a risk of contamination. Microorganisms and germs can accumulate and multiply in the filter.

Under unfavorable conditions, they can break through in high concentrations and contaminate the tap water. This also applies to individual chemical substances that accumulate in the filter.

If the filter is full, an activated charcoal filter is no longer effective. The water runs through it unfiltered. This condition must be avoided at all costs.

If a decalcifying system is connected, the rinsing and regeneration intervals as specified by the manufacturer must also be adhered to.

Tips for changing simple filters

At the beginning you shouldn't forget to close the gate valve in front of and behind the filter.

Before unscrewing the filter cartridge, the outlet must be activated in order to empty the filter. It is best to place a bucket underneath to catch the draining water. The drain opening is on the underside of almost all models.

The few bacteria still present in tap water are always well below the infection limit in clean tap water. There is therefore no danger - unless they accumulate, as in the case of contaminated filters.