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High-Efficiency-Technology BWT

HET – the new capacity dimension

As a leading innovator we are constantly developing our water optimisation filtration systems. Our new High Efficiency Technology (HET) is setting new efficiency standards in the market.


The new dimension of filter capacity, efficiency and safety is the result of intensive research by BWT Group engineers, chemists and water technologists. Under the banner of “High Efficiency Technology”, BWT now makes water optimisation even more effective, using the innovative HET technology in BWT bestmax filter cartridges. These results are achieved from improved flow control, a specially optimised filtration material, innovative active carbon pre-filtration, which takes place upstream of the ion exchanger, and maximum use of the entire filter bed.


High Efficiency Technology – for maximum efficiency and safety in water optimisation


  • Maximum filtration capacities in the smallest space
  • Low-cost filters, ideal for compact food service appliances
  • Unique capacity of up to 14,400 litres in a vending machine application


BWT Filter


Bwt Filter