Pump Size

[poolpup]

thanks for your help....I believe there will be 1.5" lines and the filter will be a hayward sand filter Pro Series model #S244T. I don't really know much more than that right now!

[mas985]

I am a firm believer in small pumps and large pipes. Unfortunately, many pool builders do the opposite. There are some exceptions. If you have a spa, water feature or pool cleaner that runs off the same pump as the filter, you may need a higher HP pump. I would then go with a 2 speed pump.

I would target an 8 hr turnover which is about 83 GPM. If you go with 1 1/2" plumbing, your head loss could be as high as 60 feet. With 2", which I highly recommend, it will probably be closer to 50 feet. So depending on the make of the pump, you could go with a full rated 1 HP pump.

[tenax]

agree with all you said, mas. first thing i was thinking when i read the pool size and idea of 1.5 inch lines is "go 2 inch lines'. i have about a 14-15,000 gallon pool so less than half the size (that's going to be a big ass pool!) with 1.5 inch and 3/4 hp (soon to be 1 hp) pump and 6 hours twice a day for turnover seems reasonable.i can't see turning over a pool your size with 1.5 inch lines without running the pump well more than half a day for a turnover!