pump replacement

May 10, 2015
11
Eastern Ontario
Hi there,

I've got a pool pump that's got a fair few years on it. it's an AO Smith 3/4hp (rpm 3450) which I gather isn't sold anymore. Anyway, shaft is pitted and starting capacitor blew again this spring (did that last year too). it's time for a new pump. I've got a 36X15 foot inground gunnite pool about, 25,000 gallons, 11/2"plumbing and a pony panel for 220V. I'm in Canada so not as hot as some places and pool only used half the year. Does it make sense to buy a variable speed pump? If so can folks comment on brand and size recommendations for a pool like mine? What about a conventional pump with perhaps a timer added?

So far the one quote i have is for a Pentair supermax VS variable speed pump for $2400 installed with taxes. I'm thinking about installing it myself so I'd likely only pay for the pump but then for this model, it's still 1850 + tax. Also I understand it's 1.5HP, that's significantly more than the 3/4hp pump i'm replacing. Is that necessary?

Any advice/recommendations welcome.

thank you
 
Does it make sense to buy a variable speed pump?
Yes.

The supermax is a medium head pump.

I don't know what is available in CA, but Calimar VS 3hp, Waterway Defender 2.7, Hayward Triton VS 900 and 950, and the Pentainair intelliflo3 are all good high head pumps.

The higher hp allows you to move the same water as a lower hP pump, but with less electricity used.

The biggest savings will be from the Single Speed to the VSP.