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Sat, Apr 21, 12 at 15:17
| Hi,
I currently have a Sta-rite system 3 filter system, but am looking to replacing it. I'm looking for something that is more energy efficient, and where the replacement filters alone, don't cost as much as the whole system. I have a salt water pool, and the new filter should be compatible with my current Jandy box for programming, etc. Any suggestions, I like the filter type, but the filters run around $400 minimum to replace, but maybe theres a better system, same type, that is more cost friendly. |
Follow-Up Postings:
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| Filters are passive devices as far as your automation and chlorination system. How old are your cartridges and what makes you sure they need replacing? Scott |
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| The Sta-Rite System 3 cartridge filter has the lowest head loss of any filter on the market so you really can't get more efficient than that filter. However, you shouldn't need to replace them that often either. Besides Scott's questions, what model pump do you have? |
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- Posted by muddy_water (My Page) on Sun, Apr 22, 12 at 9:25
| If D.E is not a problem in your area for backwashing I would look at the Pentair FNS plus with a Multiport valve. This is what I have on my personnel pool with a IntelliFlo Variable Speed pump and I do a tear down clean the grids once a season and may backwash it twice a season if that much and thats because of pine trees near my pool. I have installed these filters in almost every build also over the last 6 years. Rusty |
Here is a link that might be useful: Pentair
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| The FNS plus with a 2" backwash valve will have about 4.5x the head loss as the OPs current filter so not very energy efficient. But then again, most sand and DE filters are not very energy efficient because of high head loss. |
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- Posted by muddy_water (My Page) on Sun, Apr 22, 12 at 14:36
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| The Quad DE is a little better but still over 3.5x the head loss of the current filter. If you leave off the backwash valve it is only 1.5x the head loss so the backwash valve adds a lot by itself. |
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- Posted by muddy_water (My Page) on Sun, Apr 22, 12 at 20:17
| The DE filters run a little more but being able to backwash and not have to clean the cartridges is a big plus and I have customers that are running the same grids for over 6 years. This combined would make the homeowners Pool maintenance costs off set I.M.O. |
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