Having a pool can be an absolute joy. You can cool off in the summer, enjoy fun and recreation with your family and friends, and make sure your children are safer because they have learned to swim. But in Illinois, you wouldn’t get nearly as much enjoyment from your pool if it didn’t have a heater to keep the temperature comfortable. How can you make sure your pool heater will work exactly as it should and keep your pool warm and ready for fun? We’ve got some recommendations for you.