Silent air hot tub blowers can be used to replace many older models, brands and sizes. Hot tub blowers are typically installed with all separate plumbing in Canadian hot tubs at the manufacture level. A blower is an air pump that pushes high volume of air to specific air jets in the hot tub, which creates bubbles in the hot tub water.
Some blower models preheat the air before pushing it to the jets in order to prevent cooling of the water in the colder winter months. When replacing the air blower in your hot tub always check the label on it to see if it is a heated blower or a standard blower.