Auto-coffee machine water filters can remove particles and other substances that can lower water quality. If you live in the United States, Britain or Germany, don't worry. The standard of water is usually high enough, even if you have hard tap water, there is almost no substance in your water that may be harmful to your health. The biggest drawback of hard water is that you may need to maintain warm water appliances more frequently, such as kettles, boilers, or washing machines. These particles can also change the taste of your water, which can change the taste of the drink you make with the water. This includes the coffee you make with an automatic espresso machine.
There are different ways to filter water. Some auto-coffee machine water filters use activated carbon. Others use ion-exchange materials inside the filters. Finally, there are reverse osmosis membranes, usually used with activated carbon. There are different products on the market that allow you to use these three methods at home. If your tap water is always too hard, a auto-coffee machine water filters will make your tap water softer. It can remove taste changing elements and substances from water. One of the benefits of doing so is that it helps prevent your machine from accumulating calcium deposits quickly. It can also change the taste of your coffee drinks - ideally, make them taste better! The above point also explains why frequent descaling cannot replace the use of Auto-coffee machine water filters.
It turns out that the softer the water, the more aromatic the coffee product will be. In other words, if you make coffee with soft water, there should be more nuances in general. At the same time, hard water often has its own flavor, which may overwhelm the weaker taste and fragrance.
Finally, I can't say for sure that coffee made with filtered water will taste better. However, I can recommend that you use a auto-coffee machine water filter for your super automatic espresso machine as it will help your machine continue to function well.