Installing a whole house drinking water filter makes sense because it forms a barrier against the undesirable elements that can spoil the taste and quality of your water around your home.
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In whole house filters, the filter element works like a fine sieve: dirt particles and suspended matter larger than the openings in the sieve are held back on the filter surface and can no longer get into the water pipe. The water is cleaned mechanically. The performance of the filter is specified in μm (micrometres). BWT standard drinking water filters have a performance rating of 90 μm. By way of comparison: the average diameter of a human hair is approx. 100 μm while the BWT range of replaceable 10” cartridges can be specified with filtration levels from 25 to 1 micron.
But not all whole house filters are the same! A distinction is made between replaceable filters and backflush reusable filters.
In the case of replaceable filters, cleaning is carried out by replacing the filter element. To ensure a high degree of drinking water quality the filter element should be changed at least every six months.
In the E1 single-lever filter, BWT has developed a completely new type of filter. Thanks to its unique design and the single-lever operation, changing the filter unit is extremely convenient and easier than with most any other filter.
In the case of backflush filters, cleaning is triggered by opening a flushing valve. Part of the filtered water is diverted and flows through the filter element in the opposite direction. So the particles of dirt are loosened and flushed out via the drain. Depending on the model, backwashing can be triggered automatically or manually and should be done every two months.
All BWT backflush filters - such as the BWT R1 - work with 2-phase back flushing: Coarse particles are washed out in the first phase, while the fine filtering of the filter element takes place in the second phase.