Looking for a Hayward salt cell replacement for a saltwater pool system? Maybe you’re interested in switching from a chlorine pool system to a saltwater pool system. Let’s look at some of the maintenance costs, conversion costs, and replacement costs for chlorine and saltwater pool systems and the alternatives. The cost of maintaining a chlorine or saltwater pool system An average salt system replacement cell is around $400 A little shopping around, and you’ll see that the national average cost of …