The Spa Blower generates air and sends it into your spa. If you notice odd things going on with the water jets such as an inconsistency from normal pressure, jets turning off on their own, or just poor pressure, it’s time for a new spa blower. This guide shows you how to replace a Spa air blower. We are illustrating a Silencer Air Blower; however, most of the steps shown are applicable to other models.
The old blower should lift right off. However, in the event it was glued on or is stubborn to lift off of the return pipe, you may have to cut the pipe off a couple of inches down with a hacksaw. A word of caution: the blower unit should be elevated a minimum of 12 inches above the water line of the spa for proper operation-no matter how distant the spa and blower are separated from each other. If you have to cut the old blower off, you may have to add additional pipe to get the return pipe back to the minimum height requirement.
At this point, you will need to see if you need a coupling. Check to see if the ABS check valve that comes with the blower is compatible with the return pipe size. If not you will have to use a new coupling to make it work. NOTE: It is highly recommended to put a new coupling here for added strength regardless if it needs to be adapted.
The ABS check valve fits into the hole under the blower and the other end fits into the spa return pipe. It is important that you are sure that the air flow is going in the right direction. There is a label with an arrow showing this (See previous step). The arrow should be pointing down towards the ground.
Turn on the Spa.