Single Speed Pump System Or Double Speed System?

[klb5245]

I have two questions concerning a new pool and it's equipment. (1) Which is better a single speed pump system or double speed pump system? (2)What type of filter? Sand or Cartridge style?

[waterbear]

Two speed pump can definitely save you money on electric (and are required by law in many areas now). As for filter, it's really a compromise between filtration and ease of maintenance. Sand is the easiest to maintain but only filters to about 60 microns. DE is the most work but filters to about 5 microns. Carts fall in between on both maintenance and filtration, going down to about 10-20 microns so it's not that far behind DE.

Some localities do not allow sand filters because of the water used in backwashing and some localities only allow DE with a DE separation tank (which adds a lot to the expense).

All three types of filters do work well and generally, you will be happy with whatever you end up with.

Personally, I prefer carts and have that on my own pool. I have cared for all three types.

[AFiremanFirst]

waterbear is exactly right! It's a compromise. I could show you a sand filtered pool, and a DE filtered pool (worst to best) and you would not see or feel a difference. The only other important factor is flow rates. Some prefer cartridge because it has less head loss ("back pressure") because it doesn't have a backwash/multiport valve. And it has a better flow rate, apples to apples. However, DE is my preference with a multiport valve. Although this is highly debated, a multiport valve gives you more options, ie bypass the filter completely and vaccuum to waste! These are a big perk IMHO in trade for a little more head loss.

Concerning your pump... Multi-speed is the new black! As is salt!!! I prefer pentairs 4 by 1 pump. but I prefer Haywards t-cell. On the flip side, if you go pentair, they will increase their warranty when buying a full set-up! You've asked a couple of good questions, but we'd like to help you make most all of your decisions. Our experience is free, and remember, it's only our opinion!