Do you have a tank water heater in place? If so, then its main feature is a storage tank that holds gallons of water that gets heated up by a heat exchanger within the system. It has a component called an anode rod that absorbs rust and corrosion so that the rest of the system does not, and this anode rod must be checked on during each annual maintenance session.
But tank water heaters aren’t the only type of water heater that needs maintenance! Even if you have a tankless system in place, that needs a tune-up too. True, it doesn’t have standing water in it, but it can suffer from some of the same problems that a tank system can–like scaling. Wondering what scaling is? Read on to find out!