Swimming pool heaters are essential if you want to use your pool after the sun has set or if you want to enjoy a longer swimming season. There are many different types and models of pool heaters available to choose from and it’s important to have one that meets all of your needs. While the many available choices and the number of considerations that need to be taken into account may seem overwhelming when purchasing a pool heater, it doesn’t have to be that way. Simply by determining the answers to a few questions before you start shopping, you can…