Some people close up their hot tubs for the winter. Many others swear that winter is the best time to use it. Some reasons people love to use their spa in the colder seasons of the year are the appealing contrast between the cold outside air and the heat of the water, using it to soothe muscles before and after workouts, and maintaining spa connected health benefits such as better sleep, improved immunity, and stress relief. You may hesitate to keep your hot tub open during the winter for fear of increased utility bills. Not to worry. We have 8 pro tips for keeping your utility bills low with a hot tub no matter what the temperature is outside.