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Thread: How long to run filter daily

  1. Back To Top    #1

    Join Date
    May 2011
    Baton Rouge, LA

    How long to run filter daily

    I'm really liking the BBB method. It's low cost and it works! Now I'm looking at reducing energy costs by not filtering 24/7. Any suggestions on filter frequency and duration would be appreciated. Or maybe there's a good post on this subject someone could point me to.
    IG SW Gunite, 15K Gals, Intelliflo pump with cartridge filter

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: How long to run filter daily

    Have at it: ...

    Also pool-school/pump_run_time

    Since I have an overflow spa, it was easy for me. I measured the spa and then set the valves to pump out for about a foot and timed it. Then refilled it and timed it that way. Some number crunching gave me average GPM. Knowing that, it was a simple matter to figure out how long it took to get one full turn over a day: just under 4 hours. So I run it about 4 hours a day. Sometimes more, since I may be adding chemicals or vacuuming outside the program run time.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3

    Join Date
    May 2010
    Palm Springs area, CA

    Re: How long to run filter daily

    This is something I wondered about as well. Having had a pool for 2 summers now I have learned a few things. This summer I have been able to run my pump 4-5 hours during the hottest days (110-115 deg) of the year and water temps in low to mid 90s.

    Last summer I ran the pump 8-9 hours because I didn't know any better. With the excellent help of mas985 I realized I was getting a full turnover in about 2 hours and really was running up my electricity bill for no reason.

    However, to my mind that is a long time to leave hot stagnant water. So currently I run 1 hour at 9 AM, from 1-3 PM, and 6-8 PM. This gives me peace of mind. I don't run at night as it is my understanding algae requires some sunlight to grow quickly, with a cell doubling time of 3-8 hours. Thus with about 4 hours between stirs I feel comfortable I am keeping growth in check.

    When the heat dies down next month I will likely go back to 4 hrs per day, dropping one hour at the end of the day. Last winter I ran it 2 hours per day and it was perfectly clear. I could probably get away with one hour with water temps around 50 deg.

    Save some major $$ - cut way down on the run hours.

    Eventually when my pump dies I will be switching to an Intelliflo VS. However it's tough to justify outly with my electric rates around 13 cents kw/h.
    11,000 gallon in-ground pool/spa combo, pebble-tec, Sta-rite system 3 cartridge 300 sqft, Pentair Whisperflo WFDS-6 2 speed 1.5 HP full-rated, formerly Starite Max-e-Glas 2 HP up-rated single speed, Sta-Rite Max-E Therm natural gas heater. Jandy Aqualink RS Onetouch. Manual vacuum. Chlorine.

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