Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 14 of 14

Thread: 2 Speed vs Variable Pump for small pool?

  1. Back To Top    #1
    ssml11's Avatar
    Join Date
    Jul 2014
    Location
    Miami/Florida
    Posts
    131

    2 Speed vs Variable Pump for small pool?

    I am building a small 10k gallon 12x24 rectangular pool and I am debating whether to go for a 2 speed or a variable speed pump.

    Some factors I am considering between the two are cost, energy consumption, reliability, etc.
    I read I could run a 2 speedy in low 24/7...would that be overkill on my electric bill? I already read variable pumps require lots of surge protectors and stuff.

    I've been debating this back and forth...what do you recommend for my build? Any pumps in mind you'd care to mention? How much HP?

  2. Back To Top    #2
    ssml11's Avatar
    Join Date
    Jul 2014
    Location
    Miami/Florida
    Posts
    131

    Re: 2 Speed vs Variable Pump for small pool?

    Electricity in my area is 12.2 cents per kilowatt hour (kWh

  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: 2 Speed vs Variable Pump for small pool?

    Your power is pretty cheap, the 2-speed makes more sense financially and are more forgiving of nearby lightning strikes. Get a 1HP 2-speed like the Superflo and a timer. Running on low 24/7 is still overkill. See this article in Pool School: http://www.troublefreepool.com/conte...-pump-run-time
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  4. Back To Top    #4
    svenpup's Avatar
    Join Date
    Nov 2009
    Location
    Sacramento, CA
    Posts
    835

    Re: 2 Speed vs Variable Pump for small pool?

    I would only consider a variable speed if I had waterfalls, fountains, solar panels, or the like. Otherwise a 2 speed gives the same benefit as VS for much less $$.

    There is no need to run on low for 24 hours.
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

  5. Back To Top    #5
    ssml11's Avatar
    Join Date
    Jul 2014
    Location
    Miami/Florida
    Posts
    131

    Re: 2 Speed vs Variable Pump for small pool?

    What schedule do you recommend to run a 1hp 2 speed? Also, I see pumps like superflo 2 speed for for around $550 vs a variable counterpart can go for maybe $200 more. I really don't see much $$ there...but for the sake of simplicity if a 2 speed will still save me electricity then I think I will go for it.

  6. Back To Top    #6
    ssml11's Avatar
    Join Date
    Jul 2014
    Location
    Miami/Florida
    Posts
    131

    Re: 2 Speed vs Variable Pump for small pool?

    And no, I have no water fountains. I will be adding four deck jets on the deck...and I am considering getting a cheapo 1hp 1 speed just to run those when the kids are playing in the pool.

  7. Back To Top    #7
    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Lakeland, FL
    Posts
    2,351

    Re: 2 Speed vs Variable Pump for small pool?

    I run my two-speed 95% of the time on low. Once it's primed on high, I check the filter pressure I switch to low. I've got a basic T101 timer and a high/low toggle switch I mounted on the motor. The only time I'm on high speed is prime the pump after I clean the prefilter or to check the pressure, other than that I'm on low. I replaced my single speed 3/4 hp with a two-speed 3/4hp.

    Here's how I have set it up: http://www.troublefreepool.com/threa...P-2-Speed-115V
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

  8. Back To Top    #8
    ssml11's Avatar
    Join Date
    Jul 2014
    Location
    Miami/Florida
    Posts
    131

    Re: 2 Speed vs Variable Pump for small pool?

    Quote Originally Posted by bobodaclown View Post
    I run my two-speed 95% of the time on low. Once it's primed on high, I check the filter pressure I switch to low. I've got a basic T101 timer and a high/low toggle switch I mounted on the motor. The only time I'm on high speed is prime the pump after I clean the prefilter or to check the pressure, other than that I'm on low. I replaced my single speed 3/4 hp with a two-speed 3/4hp.

    Interesting setup...I would love to duplicate that. That way I don't have to manually babysit and switch to low speed.

  9. Back To Top    #9

    Join Date
    Aug 2010
    Location
    Dallas, TX
    Posts
    4,052

    Re: 2 Speed vs Variable Pump for small pool?

    Quote Originally Posted by svenpup View Post
    There is no need to run on low for 24 hours.
    Unless you have a pool the size of mine! 24 hours on low is cheaper than 8 hours on high, and seems just right to keep the pool clean. That said, I have considered backing it off a little, but not until it cools off.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
    If TFP has helped you, please click to SUPPORT TFP!

  10. Back To Top    #10
    svenpup's Avatar
    Join Date
    Nov 2009
    Location
    Sacramento, CA
    Posts
    835

    Re: 2 Speed vs Variable Pump for small pool?

    I do something similar to bobodaclown but with more automation. I have a TightWatt2 Timer that I have configured to run 15 minutes on high and then drop down to low for 10 hours. If you prefer Intermatic timers, they make the P1352ME which is similar to the TightWatt2.

    - - - Updated - - -

    Quote Originally Posted by RobbieH View Post
    Unless you have a pool the size of mine! 24 hours on low is cheaper than 8 hours on high, and seems just right to keep the pool clean. That said, I have considered backing it off a little, but not until it cools off.
    OP says 10k gallon 12x24.
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock (hint...it's a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

  11. Back To Top    #11

    Join Date
    Aug 2010
    Location
    Dallas, TX
    Posts
    4,052

    Re: 2 Speed vs Variable Pump for small pool?

    I know, I just wanted to make sure everyone understood that was not a blanket statement, some of us do have to run 24/7.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
    If TFP has helped you, please click to SUPPORT TFP!

  12. Back To Top    #12
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: 2 Speed vs Variable Pump for small pool?

    The Superflo 1HP 2-speed can be found for under $450. BTW, it comes with union fittings for easier plumbing and has a switch on the motor.

    I used to manually control mine. I would make sure it was primed on high and then leave it on low speed on the timer. I left it like that for months in the winter. Then in the summer when I wanted solar heat, I would leave the pump on high speed. Now the automation automatically switches speeds for solar when needed.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  13. Back To Top    #13
    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Lakeland, FL
    Posts
    2,351

    Re: 2 Speed vs Variable Pump for small pool?

    Oh living in lighting capital of the US (Florida) with relatively cheap electric a two-speed is the way to go.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

  14. Back To Top    #14
    ssml11's Avatar
    Join Date
    Jul 2014
    Location
    Miami/Florida
    Posts
    131

    Re: 2 Speed vs Variable Pump for small pool?

    Thanks for the Feedback. I am now just opening a new Thread now with the actual drawing from the engineer with what they recommend. Fee free to check it out under the title "Finally here's the Diagram - Thoughts? -Pump Selection?

Posting Permissions

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