Inside your heater assembly, there is the heater element. This device actually heats up the water that flows through the heater assembly. It kind of acts like a light bulb in that over time, the heating element can burn out, similar to a light bulb. Elements can burn out by not having water flow through the assembly. This is otherwise known as a dry fire in which the element actually melts. Elements can also gather a calcium scale build up. This will reduce heater efficiency and eventually cause the element to stop working altogether. In a flow through heater assembly, it's possible to change just the heater element. Which is a relatively inexpensive and easy fix. But this cannot be done with a low flow heater assembly. The entire assembly has to be replaced if you have this type of system in your hot tub. Heater elements are typically help in place by two large nuts and comes out and is replaced with a little persuasion. GoPoolandSpa.com carries many different kinds of heating elements to get your hot tub warm and inviting!
