Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 12 of 12

Thread: Hayward Perflex EC65a or 75a: Opinions?

  1. Back To Top    #1

    Hayward Perflex EC65a or 75a: Opinions?

    Hi,

    I need to replace our 20 y/o Purex DE 36 SF filter with a new unit. I have an IG 26,880 pool with a Hayward 1HP single-speed pump. For financial reasons (filing BK soon), I’d like to get the group’s opinion of the Hayward EC65a or 75a. Both are well priced and within our budget. Does anyone have any experience with these in relation to a similar pool setup as mine?

    Thanks
    30000 gal.
    Pentair 60 sq. ft. DE filter 150 gal. per min.
    IG 20X40 Free Form gunite/plaster
    2 hp Purex pump
    Corona, Ca.

  2. Back To Top    #2

    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
    Posts
    4,160

    Re: Hayward Perflex EC65a or 75a: Opinions?

    Welcome to TFP!!

    As long as you can afford it, get the larger filter (the 75), you'll get better filtration.
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

  3. Back To Top    #3

    Re: Hayward Perflex EC65a or 75a: Opinions?

    Quote Originally Posted by waste
    Welcome to TFP!!

    As long as you can afford it, get the larger filter (the 75), you'll get better filtration.
    Thanks for the greeting. I did plan on going with the EC75. Do you have any experience with this model?
    30000 gal.
    Pentair 60 sq. ft. DE filter 150 gal. per min.
    IG 20X40 Free Form gunite/plaster
    2 hp Purex pump
    Corona, Ca.

  4. Back To Top    #4

    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
    Posts
    4,160

    Re: Hayward Perflex EC65a or 75a: Opinions?

    I have a good bit of experience with the EC line of filters, the 75 is just the big one, they all work the same.

    Let me refer you to Use and Care for DE Filters(from the 'Further Reading' section at the bottom of Pool School).

    The EC series are the 'bump' style filters

    I hope I covered most of the questions you may have with the new unit in the link I gave, but I'm more than happy to answer any questions that arise once the new unit is installed and running

    Congrats on the new filter and finding us!
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

  5. Back To Top    #5

    Join Date
    May 2007
    Location
    South Central NJ
    Posts
    3,192

    Re: Hayward Perflex EC65a or 75a: Opinions?

    This tech HATES bump filters. Too many nuts and bolts.

    Two words: Sand Filter
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

  6. Back To Top    #6

    Re: Hayward Perflex EC65a or 75a: Opinions?

    Thanks Waste for the link... good read!

    PoolGuyNJ
    This tech HATES bump filters. Too many nuts and bolts.
    I assume you're talking about the Hayward cover system. Good point... a lot of manual work to get the cover off.

    The Pentair Star 80 uses a single stainless steel clamp for the cover, similar to grid filters. Different regeneration method to.
    http://www.pentairpool.com/products/fil ... rs-158.htm

    Maybe this would be a better option?
    30000 gal.
    Pentair 60 sq. ft. DE filter 150 gal. per min.
    IG 20X40 Free Form gunite/plaster
    2 hp Purex pump
    Corona, Ca.

  7. Back To Top    #7

    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
    Posts
    4,160

    Re: Hayward Perflex EC65a or 75a: Opinions?

    The Star 80 is also a 'bump' DE filter. It has the plastic plate in it that scrapes the DE off the grids.

    I agree that the 15 bolts that secure the EC 75 take a couple extra minutes to undo and reassemble, but it's not a major headache I'll gladly tell you a couple of tips to make the disassembling and reassembling quicker and easier
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

  8. Back To Top    #8

    Re: Hayward Perflex EC65a or 75a: Opinions?

    Quote Originally Posted by waste
    The Star 80 is also a 'bump' DE filter. It has the plastic plate in it that scrapes the DE off the grids.

    I agree that the 15 bolts that secure the EC 75 take a couple extra minutes to undo and reassemble, but it's not a major headache I'll gladly tell you a couple of tips to make the disassembling and reassembling quicker and easier
    Thanks... I'll take you up on that once I have it installed. So you think, given my pool's size, the EC75 is a good choice? Some online retailers list it as an above ground filter. Not sure why. I certainly don't want to undersize this part.
    30000 gal.
    Pentair 60 sq. ft. DE filter 150 gal. per min.
    IG 20X40 Free Form gunite/plaster
    2 hp Purex pump
    Corona, Ca.

  9. Back To Top    #9
    polyvue's Avatar
    Join Date
    Aug 2009
    Location
    Sacramento, California USA
    Posts
    1,215

    Re: Hayward Perflex EC65a or 75a: Opinions?

    Quote Originally Posted by JWB
    So you think, given my pool's size, the EC75 is a good choice? Some online retailers list it as an above ground filter. Not sure why. I certainly don't want to undersize this part.
    The Perflex® Extended-Cycle EC75A Series D.E. Filter is described on one web site as appropriate for pools up to 20x40'. The Hayward site lists it in the section for in-ground pool filters with these specifications

    Turnover (In Gallons)
    Model Number EC75A
    Effective Filtration Area 40 sq ft.
    Design Flow Rate 80 GPM
    8 Hours 38,400
    10 Hours 48,000

    It certainly appears that this 40 sq ft filter would work for your pool but if you want to do the calculations Hayward provides a work sheet that can be used to estimate TDH, pump and filter sizes:

    14,555 gal in-ground 16'x29' white plaster Pool w/spa (2007); Goldline Aqua Logic AQL-PS-8 control w/Aqua Cell 15 Salt Water Chlorination (SWCG); Hayward TriStar 1HP (1.85 SF) main / 1.5HP (1.60 SF) spa pumps; Hayward Swimclear cart filter C4025, ColorLogic LED lights; Tankless SP-18-4 electric heater; Polaris 280 cleaner.
    __
    View of spiral galaxy in Ursa Major NGC6217 - Hubble Telescope 2009

  10. Back To Top    #10

    Re: Hayward Perflex EC65a or 75a: Opinions?

    Hey thanks for the info. A Hayward tech advised me that given my location (CA), a Pro-Grid filter would be "more robust". Honestly we probably swim two months out of the year. The rest of the time it's just something to sit around and look at (sorry pool aficionados!). We don't even use the heater... too old anyway.

    If I went with a sand filter what make or model is popular here?

    Sorry to be so blunt but I've just spent two weeks researching DE models and I don't have much time to waste.

    Thanks
    30000 gal.
    Pentair 60 sq. ft. DE filter 150 gal. per min.
    IG 20X40 Free Form gunite/plaster
    2 hp Purex pump
    Corona, Ca.

  11. Back To Top    #11

    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
    Posts
    4,160

    Re: Hayward Perflex EC65a or 75a: Opinions?

    If you want to research other options, it's your money and your choice - let's face it, you'll be the one living with the filter and having to maintain it

    My best advice is to get a filter that will easily mate with your existing system

    If you opt for the sand filter (it would honestly be my first choice for a filter) - please make sure that you have the room for it and that the pad, under the pool equipment, will be able to properly support the weight!

    You're having 'second thoughts' about getting the EC75, it's understandable and anyone would also, when making a long term purchase - do a little more research and bounce any thoughts you have off us, it's what we're here for
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

  12. Back To Top    #12

    Re: Hayward Perflex EC65a or 75a: Opinions?

    Ted,

    Thanks for all your help. I mean it... you and your fellow contributors have been great! I'm going to stick with a DE filter. I've had one for five years and have gotten used to the cleaning and charging routine... takes a half-hour at best. The Pro-Grid 4820 will be slightly larger than my old Purex 36 SF model. Also, I'm hoping for better water throughput since resistance within the filter will be lessened by its larger volume.

    Thanks again,
    Jon
    30000 gal.
    Pentair 60 sq. ft. DE filter 150 gal. per min.
    IG 20X40 Free Form gunite/plaster
    2 hp Purex pump
    Corona, Ca.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •