Original > Hot Tub Forum

Going down 0.5 hp?

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rayf01:
Hi all, looking for a bit of feedback here.

I bought a home with a tub. After some looking, I elected to do a bit of overhauling and replace the pump/motor which was 8 years old and had some issues. Now, the pump for the old one had a sticker that said 3.5 hp on it. I took it to a pump/motor shop and the guy told me "I always go off the number on the actual impeller", which says 3. So he says it was a 3 hp pump. I had him order me a new one, and of course when I look at the amp ratings the new one is lower and its a 3 hp pump. I am pretty sure my old one is a 3.5 hp. Looking at the specs of both pumps, they both appear to run at the same RPM, 3450/1725

If I install the new 3 hp one, is it going to make a huge difference and lack in jet pressure or do you think a person would even notice it much? Keep in mind I have never used the hot tub before because as soon as I took possession of the house I drained it.

Old pump/motor:






New pump/motor:

Tman122:
You won't notice.

hottubdan:
good job.

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