Is it easy to change a chlorinated pool into a saltwater pool?

Yes, it is. It takes about an hour to convert and costs about $1800 in upfront charges. If you are handy, you can probably do it yourself; however, I recommend consulting a local pool supply store before you attempt this. Make sure to choose the right salt chlorinator for your pool, taking into account how hot it gets, how much direct sunlight it receives, how much you use it, and the pool’s size. Get a chlorinator that's 1/3 larger than your pool. It will last significantly longer and be able to survive, more efficiently, the daily wear and tear. Make sure to use non-iodized salt, good old-fashioned table salt, with the goal of maintaining a level of 3,500 ppm sodium chloride. Read the chlorinator manual to see how much salt you need. Also, remember to eliminate phosphates. The phosphate level should be between 100 and 125 PPB. In most cases, the salt cell will last about 5 years when properly maintained.