What is Freeze Protection? Freeze protection in the pool and spa industry refers to measures taken to prevent damage to a pool plumbing system due to the expansion of water in the pipes and equipment.  Freeze protection measures can take many different forms such as 24 hour a day pumping, pump and heat the water on a timer, cycle circulation throughout the day, etc.  Basically, as long as water is circulating through all the pipes and the water temperature is above freezing, the plumbing system would be considered in freeze protection mode when the outdoor temperature is approaching the freezing mark. Why do you need it? If you live in a climate…