Cold weather can’t be stopped, but you don’t have to close your inground swimming pool right away. Inground pool heaters are the perfect solution to warm your swimming pool water to the perfect temperature during impending cold days or nights, and can occasionally last the entire season. Most types inground pool heaters provide heat on demand when you need it most.Before you purchase an inground heater, it’s important to first determine how much and how often you’ll be heating your pool. If you live in colder climates, and need a heater for your inground swimming pool that will warm the water quickly, view the selection of gas or propane-powered heaters. They don’t rely on the temperature outside to warm your water. If natural gas or propane isn’t readily available in your area, view the selection of electric heaters. They’re reliable, easy to use and designed to fit in tight spaces.