Buying a new pump motor a couple questions

Jabski

Member
Jul 27, 2010
5
Southeastern Pennsylvania
Hi I'm pretty new to this pool forum. I'm so glad I found it.

I have a A.O.Smith 1&1/2 HP 3450 RPM pump that just stopped working yesterday.

1.) Is a 2 speed 1&1/2 HP motor the way to go with a replacement?

2.) In reading a lot of the info on here it seems I can use a smaller motor and get the same result. Is that true?

3.) Can I take the broken motor to a motor repair shop and have it fixed then have a back up for when needed?

Thank You everyone.
 

Bama Rambler

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2009
22,969
SouthWest Alabama
1) A 2-speed is definitely the way to go.

2) Without knowing anything about your equipment I can't comment on this one!

3) You certainly can. I'd get them to give me an estimate before I committed to anything though. It may wind up being cheaper to buy a new one.
 

mas985

TFP Expert
LifeTime Supporter
May 3, 2007
12,382
Pleasanton, CA
For #2, you can only use a smaller motor if you also reduce the size of the impeller (i.e. lower HP impeller rating). Sometimes that requires a new diffusor as well. Reducing the impeller size and motor basically reduces the HP of the pump and will reduce energy usage as well.
 

fudgebar

Well-known member
Jul 25, 2010
172
North Bergen, NJ
Which is better for a 14x28 pool, a variable speed pump or a 2 speed pump?

How does the Pentair Variable Speed compare to the Hawyard Variable speed pumps?....Do you favor one over the other?...why?

thanks
 

ride525

Gold Supporter
Jun 17, 2010
316
Pleasanton, CA
fudgebar said:
Which is better for a 14x28 pool, a variable speed pump or a 2 speed pump?

I ended up getting a variable speed, Pentair Intelliflo VF. Variable speeds cost a lot more than 2 speed pumps, so savings will depend some on how much you are paying for electricity. And how much you pump now, size of your current pump, etc.

How does the Pentair Variable Speed compare to the Hawyard Variable speed pumps?....Do you favor one over the other?...why?

The Hayward has a separate controller, which I thought was an advantage. But the Pentair variable speed pumps have been out on the market longer. Pentair basically makes three versions of the intelliflo, the most basic VS3050, the VS3050+SVRS, and the VF. I liked the VF, since it sets your GPM flow based on you input pool size (in gallons), and the hours you tell it to pump. But the VF is the most expensive, although my utility in California has a $100 rebate on the VF.

Jeff
 

fudgebar

Well-known member
Jul 25, 2010
172
North Bergen, NJ
thanks for the info ride....since I dont have any pump now, ( I am in the process of selecting a contractor and building a pool) should I opt for the Pentair VF now right from the start?.........When you say its the most expensive pump of their variable speed pumps, what are estimating?....$2000? If most contractors offer a 1HP Super Hayward single Pump included in their packages, what kind of credit is fair to ask for to swap out to the Pentair VF model?


thanks for your help Jeff (ride525)
 

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