How To Change a Spa Air Blower

This guide will walk you through replacing a Spa air blower. We are illustrating a Silencer Air Blower. 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.  however, most of the steps shown are applicable to other models.

1. Purchase your replacement Spa Air Blower ahead to have it on hand. To select an equivalent blower, you will need to copy off the motor specifications on the side of your old blower, e.g. 1.0 hp motor 240 volts, 2.4 amps, 5000 cycle.

2. You will need the following tools: screwdrivers (phillips and flat head), a 1 1/2" or 2" coupling and basic knowledge of electrical wiring. If you are not comfortable working with electricity, have an electrician hook up the power.

3. Your first step is to turn off the power to the Spa Blower. To be safe, turn off the power at the circuit breaker.

4. Open the wiring box and remove wires. Keep track how each of the colored wire is connected. NOTE: Again, if you are not confident working on electrical wiring you should contact an electrician.

5. 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.

6. 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.

7. 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.

8. With the ABS valve now inserted into the return pipe, gently set the blower into the open end. DO NOT USE PVC PIPE CEMENT. If you have to remove the blower later, this will make it extremely difficult to take off. This connection does not need to be completely air tight.

9. Rewire the electrical box by connecting the wires as they were connected in step 4. Close up the wiring box.

10. Restore the power to the Spa Air Blower at the circuit breaker.

11. Turn on the Spa.

If you have any other questions about pool and spa products please do let us know - we are here to help! 

1 comment



My pool spa blower came with home, unfortunately the label with the stats are completely gone, I’m guessing it’s a 1HP. Anyway I can be sure it’s a 1HP?

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