The tankless water heater is becoming a standard piece of equipment in homes. Many models are much more efficient than your average tank models, and this also translates to less costly maintenance and more peace of mind. One question might remain, however: how do these heaters deal with water impurities? Many require a special water filter, installed on the incoming water line, to handle the stuff you don’t want. Why Add Filters To Your Tankless Water Heater? The water filter needs to be installed as water comes into the home to allow the filter to remove impurities before they reach the tankless water heater. Tank heaters usually deal directly with all the impurities you might find in your water, so keeping your tankless model in good order requires some extra protection. A good filter will take out sediment and minerals before they ever reach the heater, preventing the system from clogging up. Most of the problems are caused by hard water. This is water with an excess of dissol