My old spa blower worked but not very well. After reading all the AirSupply blower reviews I bought this blower which matched my current blower power and horsepower. Some reviews indicated that these blowers were more powerful than the blowers they replaced causing the spa water to move too much etc. I found this to be exactly the same power as the blower I was using - the same amount of water went through the jets etc. Very easy to change, less than 10 minutes. The biggest advantage of this blower is the noise level - it's very quiet and you can hardly hear it. My old fan was very noisy and I rarely turned it on out of respect for my neighbors. :). Get it and enjoy the spa again!