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Thread: SWG operationg cost?

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    SWG operationg cost?

    So, are there any numbers out there for:

    salt vs. bleach usage?

    electricity usage for the SWG?

    pros/cons?

    I am trying to understand what I will be in for ($) if we convert to a SWG as we swam in one at a hotel this weekend and oh my it was nice.
    27,500gal IG plaster that needs recoating/painting!, Pentair Whisper-flo 1hp 2 speed, 48sf DE, Pentair Legend II pressure-side cleaner, BBB newbie

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    JasonLion's Avatar
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    Re: SWG operationg cost?

    The great majority of any difference you noticed was probably because there was salt in the water. You can add salt without having a SWG and get some or all of the same nice water feel.

    For residential use, a SWG usually ends up costing more than using bleach (or trichlor). The vast majority of the cost is the up front cost of buying the unit, and then the cost of replacing the cell every 5 years or so. Salt costs depend on the size of your pool, but are minimal, under $50 for most pools the first year, and much less than that each subsequent year. Electrical usage is very low, nothing compared to the pump.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3
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    Re: SWG operationg cost?

    then again, it's really hard to put a price on the convenience and with the rising costs of all forms of chlorine in the past few years...

    Let's put it this way. I would never go back to manually chlorinating or even using peristatic pumps or the liqidator since I do NOT need to handle chlorine at all!

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    No P in my ool's Avatar
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    Re: SWG operationg cost?

    SWG is the best pool convenience there is. Once you get it set you can skip a day or two from testing and not feel guilty!
    21' Leslies Beachland Ag Pool, 10,000 gallons, professionally installed (best money I ever spent) Hayward 16" sand filter w/Pentair two speed pump Fafco 4x20 solar heater,Aqua Trol RJ. Borates added. Hard plumbed.

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    teppy's Avatar
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    Re: SWG operationg cost?

    i know this may sound pretty bad right now in this economy, but considering the fact that pool ownership is a luxury, i would not care how much it costs to run a SWG at this point(within reason of course). i was so tired of fooling with clorox that i could not put a price on my SWG. Its so nice and i would not want to go back.
    17,000 gallon roman shaped gunite pool-AquaRite goldline SWG

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    Re: SWG operationg cost?

    Quote Originally Posted by JasonLion
    The great majority of any difference you noticed was probably because there was salt in the water. You can add salt without having a SWG and get some or all of the same nice water feel.

    For residential use, a SWG usually ends up costing more than using bleach (or trichlor). The vast majority of the cost is the up front cost of buying the unit, and then the cost of replacing the cell every 5 years or so. Salt costs depend on the size of your pool, but are minimal, under $50 for most pools the first year, and much less than that each subsequent year. Electrical usage is very low, nothing compared to the pump.
    i'll disagree with you here
    it only ends up being expensive on pools with very small chlorine consumption and/or if you buy higher end models with bells and whistles

    any of the models in the middle price range, and especially in the lower will end up cheaper

    we already had this discussion which prompted me to develop the calculator in my signature to prove my point

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    Re: SWG operationg cost?

    Quote Originally Posted by Strannik
    Quote Originally Posted by JasonLion
    The great majority of any difference you noticed was probably because there was salt in the water. You can add salt without having a SWG and get some or all of the same nice water feel.

    For residential use, a SWG usually ends up costing more than using bleach (or trichlor). The vast majority of the cost is the up front cost of buying the unit, and then the cost of replacing the cell every 5 years or so. Salt costs depend on the size of your pool, but are minimal, under $50 for most pools the first year, and much less than that each subsequent year. Electrical usage is very low, nothing compared to the pump.
    i'll disagree with you here
    it only ends up being expensive on pools with very small chlorine consumption and/or if you buy higher end models with bells and whistles

    any of the models in the middle price range, and especially in the lower will end up cheaper

    we already had this discussion which prompted me to develop the calculator in my signature to prove my point
    Awsome - just what I am looking for - I am going to have to check out that calc "off-time"...
    27,500gal IG plaster that needs recoating/painting!, Pentair Whisper-flo 1hp 2 speed, 48sf DE, Pentair Legend II pressure-side cleaner, BBB newbie

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    JasonLion's Avatar
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    Re: SWG operationg cost?

    You should also read the topic that inspired the calculator and see some of the costs that it does not include in it's calculation.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: SWG operationg cost?

    Quote Originally Posted by JasonLion
    You should also read the topic that inspired the calculator and see some of the costs that it does not include in it's calculation.
    hoo boy good read
    27,500gal IG plaster that needs recoating/painting!, Pentair Whisper-flo 1hp 2 speed, 48sf DE, Pentair Legend II pressure-side cleaner, BBB newbie

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    Re: SWG operationg cost?

    Yeah SWG will end up costing you more or or breaking even when you factor in everything.

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    Re: SWG operationg cost?

    Back in September of last year I ran some numbers on my SWG set-up, link is here-
    http://www.troublefreepool.com/actua...ing-t9338.html

    As a quick update, I am still using this Intex unit, I even mounted it in a more permanent manner-
    http://www.troublefreepool.com/post108100.html#p108100

    Having a high CYA is key to using this set-up, I reduced the run time from six hours to four by raising the CYA from 60 to 80. I also have 50 ppm borates, and have not had algae since putting it in - either last year, or this year(liner and water were new in May.)

    Aside from adding a quart or two of muriatic acid once a week, it is as close to "set it and forget it" as a Trouble Free Pool can be, IMHO.
    22 x 40 IG vinyl lined, 23,570 gal.
    1 hp. Pac-Fab Challenger pump 300# sand filter
    Intex 8110 SWG, Hayward CL220 offline feeder
    Hayward 250K Btu gas heater
    Aquabots

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    Re: SWG operationg cost?

    Factor in my time @$$ pr hr. and the SWG WINS BIG TIME!! never tried the bleach way and maybe I'm now biased, we live 10 miles from town so just getting the stuff home would cost me time and fuel. I can spend more time poolside
    20 X 40, 28000 gal IG cement bottom, steel sides, vinyl liner, Pentair 4X160 pump, sand filter, SWG, Titan heat pump, coluorlogic and fiber optic. concrete-exposed aggregate deck
    1 skimmer, main drain, 4 returns ( 2 in stairs ) JEWEL LIKE WATER thanks to TFP!

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    Re: SWG operationg cost?

    I have used trichlor pucks, chlorine and now have and SWG. My pool uses a lot of chlorine because I have three very large trees nearby, on is actually over half the pool. This means I get a lot of debris dropped into the pool from the trees. Yes I hate the first week of March when the live oaks drop nearly 4 bushels of leaves into my pool in about a 10 day period.

    I was using at least 174oz jug of chlorine everyday. This got to be quite the pain to keep up, and I was always getting algae outbreaks which took even more chlorine to kill off. The trichlor caused my to have high CYA because I ran so much of it through the pool.

    For me the only solution was an swg. Since installing it (3 season ago) I have not had many issues with algae. Honestly the only outbreak I had was because I inadvertently turned it off.

    I ran the SWG vs Chlorine comparison and got these numbers:

    1.36 gal 6% bleach per day (174 oz Bottle)
    $1.86 per gallon ($2.54 per bottle)
    9.9 cents/kwh
    .3kw power consuption
    30g/h

    Results for: DIG-220 chlorinator
    100% Chlorine output: 30 gram/hour
    100% Chlorine usage: 309 gram/day
    Chlorinator running time: 10.3 hours
    Costs (over 5 year period)
    Bleach cost: $4605.3875
    Electricity cost: $558.28575
    Equipment cost: $1000
    _______________________
    Total savings: $3047.10175

    I know there are other costs involved with SWG as mentioned, but there are for chlorine also. I know that I've ruined at $200+ in clothing pouring chlorine (2 pairs of shoes, a pair of pants and a shirt).

    But for me I'm money ahead with the SWG.
    15,500 gal, inground gunite pool with 7 ft spa, 2 speed pump 2hp/.33hp, 3/4 hp booster pump, Intermatic P1353 timer, AutoPilot SC-48, Sand filter with ZeoBest, Heater, that I never use . . .

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    Re: SWG operationg cost?

    thanks lovingHDTV - your info is interesting for a few reasons:

    1. I am in Houston - similar season
    2. I have several trees too.
    3. I am putting in 1 182oz jug chlorine/day (like you were)
    4. I have had mustard algae problems with pucks (I use them only now when we go away for the weekend)
    5. Power at .11/kwh

    This is my second season with this (and any) pool. Last season was pucks and fighting mustard algae, now I am BBB but like mentioned above, (1) $2.54 jug/day and have no mustard algae "so far"...

    I also understand that "YMMV".
    27,500gal IG plaster that needs recoating/painting!, Pentair Whisper-flo 1hp 2 speed, 48sf DE, Pentair Legend II pressure-side cleaner, BBB newbie

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    JasonLion's Avatar
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    Re: SWG operationg cost?

    Quote Originally Posted by lovingHDTV
    Results for: DIG-220 chlorinator
    100% Chlorine output: 30 gram/hour
    100% Chlorine usage: 309 gram/day
    Chlorinator running time: 10.3 hours
    Costs (over 5 year period)
    Bleach cost: $4605.3875
    Electricity cost: $558.28575
    Equipment cost: $1000
    _______________________
    Total savings: $3047.10
    These results can be very misleading. This calculation assumes that your chlorine usage is uniform year round. Most pools are actually open perhaps six months of the year, and use less chlorine in the spring and fall. Correcting for that, it then assumes that the cell lasts for twelve years, with is not plausible. It also fails to take the cost of acid into account (most SWG pools use more acid than other pools), or the cost of paying for the unit up front, instead of over time.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  17. Back To Top    #17

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    Re: SWG operationg cost?

    Quote Originally Posted by JasonLion
    Quote Originally Posted by lovingHDTV
    Results for: DIG-220 chlorinator
    100% Chlorine output: 30 gram/hour
    100% Chlorine usage: 309 gram/day
    Chlorinator running time: 10.3 hours
    Costs (over 5 year period)
    Bleach cost: $4605.3875
    Electricity cost: $558.28575
    Equipment cost: $1000
    _______________________
    Total savings: $3047.10
    These results can be very misleading. This calculation assumes that your chlorine usage is uniform year round. Most pools are actually open perhaps six months of the year, and use less chlorine in the spring and fall. Correcting for that, it then assumes that the cell lasts for twelve years, with is not plausible. It also fails to take the cost of acid into account (most SWG pools use more acid than other pools), or the cost of paying for the unit up front, instead of over time.
    OK, I reran with the assumption that I use this during the 6 months of my swim season, and none during the rest of the year (cut my daily chlorine amount in half). Obviously this is incorrect as I still use chlorine during the off season but, I still show a savings over 5 years.

    Additional costs apply for both methods as been discussed over and over.

    Results for: DIG-220 chlorinator
    100% Chlorine output: 30 gram/hour
    100% Chlorine usage: 154.2 gram/day
    Chlorinator running time: 5.14 hours
    Costs (over 5 year period)
    Bleach cost: $2298.2225
    Electricity cost: $278.60085
    Equipment cost: $1000
    _______________________
    Total savings: $1019.62165

    dave
    15,500 gal, inground gunite pool with 7 ft spa, 2 speed pump 2hp/.33hp, 3/4 hp booster pump, Intermatic P1353 timer, AutoPilot SC-48, Sand filter with ZeoBest, Heater, that I never use . . .

  18. Back To Top    #18

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    Re: SWG operationg cost?

    An update to my numbers. I broke out my amp meter and measured my DIG-220 with SC-48 cell at power level 2. It takes .9 amps at 220V so about 198W to run. When the cell turned off, I could not get any reading, but the display says the cell was seeing 6.3A at 29V or 182.7W so I could see the different being 16W and my amp meter only goes to the nearest tenth of an amp. So this seems to fit.

    I previously guessed 300W so I was off on power costs by 33%.
    15,500 gal, inground gunite pool with 7 ft spa, 2 speed pump 2hp/.33hp, 3/4 hp booster pump, Intermatic P1353 timer, AutoPilot SC-48, Sand filter with ZeoBest, Heater, that I never use . . .

  19. Back To Top    #19

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    Re: SWG operationg cost?

    Do the cells reduce flow / pressure?

    I am probably already too low for my Legend II.
    27,500gal IG plaster that needs recoating/painting!, Pentair Whisper-flo 1hp 2 speed, 48sf DE, Pentair Legend II pressure-side cleaner, BBB newbie

  20. Back To Top    #20

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    Re: SWG operationg cost?

    Derek!

    We converted earlier this year from standard chlorine to SWG.....the results for me personally are as follows:
    1-Easy
    2-Easy
    3-Easy
    4-Lovely water, lovely feel on skin and hair
    5-Did I mention easy
    6-ph has never been so stable
    7-No messy chlorine taps
    8-No screwed up CYA (due to stabilizers in chlorine taps)
    9-I have not had to add anything to the pool since my algea dilema earlier this year (some people remember the many jugs of bleach I added)
    10-Easy

    I am not making this up! I am happy that we did switch and we've already saved so much in pool chems that the SWG will pay for itself.

    We had it installed by the same company that originally installed our pool the cost was something around 2,100 including the Salt (we added approx. 12 bags)....since then I've added about 3 gallon jars of salt (I had to drain some water due to high CYA so in the interim I had to re-add some salt since it dropped to 2600...it's at 2900 now)

    I hope this helps you!
    Cheerio and Good luck!
    Tanja
    NCSalt! IG - Mountain Lake 21x40/Vinyl Liner Fiberglass stairs/Hayward Sand Filter/Polaris 3900 w/Booster-pump (5060)/SWG Aqua Rite-Prologic-T-15 cell/Hayward Elec. Heat Pump/2 skimmers/Gallons: 18900/900 sq ft stamped concrete/Concrete Coping/TF100-Test Kit Hot tub: Dynasty Spa/Neptune Series, 5-person, 400 gallons, carbon filter plus 2 regular filters, LED color lights. "I control my pool, and not the other way around":-)

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