Weather-Out manufactures high quality pool heater covers that protect your expensive equipment from damaging and efficiency hampering debris. During the fall and early spring, trees are shedding an abundance of leaves, twigs, seeds and pine needles which lay inside your heater trapping moisture. In the winter, rain, snow and ice accumulate in, on and around your heater. During these times of the year, when problems are at their peak, your heater will be properly covered and protected. If you live in a southern locale your heater can be covered at different times. In the summer, or during any period of extended non-use, cover your heater to protect it from sprinkler systems and salt water spray.