Why are swimming pool pumps less efficient than pond pumps?

[smallpool]

At least for low flow (I have to limit my pool flow to 36 gpm due to CA regulations for a 12,000 gal pool), it seems that pond pumps can be much more efficient than pool pumps; does anyone know why?

An example: At 10 head, 35 gpm, an Intelliflo draws 200W. An "Elite 800 Platinum" pond pump draws less than 147W (it draws 147W @ 42 gpm at this head; I don't see a chart of how much less it would draw at 35 gpm).

I know I can't use a pond pump (CA requires only approved pumps be installed); I was just wondering about this difference…

Thanks,

Mark

 

[heythatguy]

Re: Why are swimming pool pumps less efficient than pond pum

Shere in CA are you that requires restricted flow? Unless it is a commercial pool in an apartment complex. Some things to consider on a pond pump might be the difference on the diffuser and the impeller, maybe the allow a larger amount of water through. Another though I had was about the motor, it might just be a bit more efficient. It is a good thing it pulls less energy as people tend to leave those things on 24/7.