In colder water we usually just put a smaller button in and make sure you have a top screen installed. You can replace the resin, top screen, and DLFC button yourself if you are handy and can lift a little weight. I would not recommend replacing your Clack valve water softener with a new system. Fleck and Clack are the top tier system and component manufacturers, these systems can be rebuilt and repaired economically for 20-30 years. The resin can be purchased at a very reasonable price. Call a few local companies, see how much they would charge to rebed your system, you might find someone who can do it for a lot less. If you have municipal water, you will probably have some chlorine in the water. Be sure to get a good, high quality resin.