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The E5K is equipped with our patented AsyMatrix® technology, which enables high asymmetry between the central heating and tap water sides. This optimizes heat transfer efficiency in the context of a low pressure drop on the central heating side. The E5K can also transfer more heat using less material, thanks to its All-Active plate pack. The pack features front and back plates that meet the highest mechanical requirements while remaining active in heat transfer. With its long thermal length, the E5K is particularly suitable for condensing boiler systems.