Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 18 of 18

Thread: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

  1. Back To Top    #1

    Join Date
    May 2008
    Location
    Dallas, TX
    Posts
    26

    Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    I need to replace my 1.5 HP pool pump. I am looking to replace it with a dual speed pump or variable speed pump. I have an older Aqualink RS (from 1996) that I would like to upgrade to the iAqualink when I replace the pump.

    First, I have read several posts on here about the cost savings between the dual speed and variable speed pumps and which option makes the most sense with energy costs. Based on the information I have read, it looks like I should replace it with a dual speed pump. I assume I should replace it with a dual speed 1.5 hp pump, but is there a reason I should consider a different size?

    In addition, I would like to be able to control the speed of the pump with the iAqualink system. Is this possible, and if so are there particular pumps that I need to consider?

    I'm sure there are other things to consider when upgrading my pump and automation and appreciate any help and advise.

    Thanks!
    16,000 gallon IG gunite pool w/attached spa, Pentair Intelliflo VS, Sta-Rite DE Filter, 2 skimmers, 1 main drain, Polaris 280, iAqualink, blower, Jandy Heater

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Do want a new pump or just replace the motor on your existing pump? You could go with a smaller 2 speed motor for more savings, but you would then also need a smaller impeller.
    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!

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Yes, getting a pump of the same size is a good idea. The pump size determines how strong the spa jets are. Unless you are unhappy with the spa jet strength, it is best to stay with a pump of the same size.

    Note that pump size is affected both by the listed HP and the SF (service factor) on the pump. You want a new pump where HP * SF is equal to HP * SF on your current pump.

    Depending on what is wrong with your current pump, you might be able to replace just the motor, which will cost less. Replacing a motor is a mid-range DIY project, but then replacing a pump is also a mid-range DIY project.

    For two speed pumps there are many models that are all good, and there isn't really anything special you need to watch for in regards to the automation system, as all of the automation systems can handle nearly all two speed pumps.
    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

  4. Back To Top    #4
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Just came back to this and saw the spa ... so I agree you would not likely want to go smaller than what you currently have.
    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!

  5. Back To Top    #5

    Join Date
    May 2008
    Location
    Dallas, TX
    Posts
    26

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Thank you, both. I have been happy with the strength of the spa jets, especially when using the blower. There are some additional parts that need to be replaced on the impeller as well. Because of that, I figured this would be a good time to replace the pump with something more efficient.

    Which models would you recommend and are there any that I should stay away from?

    I think you answered this above, but will I be able to switch the pump from low to high with the Aqualink system?
    16,000 gallon IG gunite pool w/attached spa, Pentair Intelliflo VS, Sta-Rite DE Filter, 2 skimmers, 1 main drain, Polaris 280, iAqualink, blower, Jandy Heater

  6. Back To Top    #6
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Can you be more specific with the actual model number of the pump? All 1.5hp pumps are not created equal.

    Any automation should be able to control a 2 speed pump, assuming you have a free relay.
    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!

  7. Back To Top    #7

    Join Date
    May 2008
    Location
    Dallas, TX
    Posts
    26

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    I got the specs off of the motor. It is 1.5 HP and 1.1 SF. The model number on my current AO Smith motor is C48L2PA105C5. I can provide any additional information that may be helpful.

    Thank you all so much. I really appreciate the advice and help from everyone here!
    16,000 gallon IG gunite pool w/attached spa, Pentair Intelliflo VS, Sta-Rite DE Filter, 2 skimmers, 1 main drain, Polaris 280, iAqualink, blower, Jandy Heater

  8. Back To Top    #8
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    What kind of pump is it? Not the motor, but the actual wet end ... that is what determines the performance of the pump and that is what you want to match to keep the water flow the same. Add a picture if you are not sure.
    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!

  9. Back To Top    #9

    Join Date
    May 2008
    Location
    Dallas, TX
    Posts
    26

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Here are some pictures of the pump and my equipment pad. Wow! I need to clean the dirt of that pump!





    16,000 gallon IG gunite pool w/attached spa, Pentair Intelliflo VS, Sta-Rite DE Filter, 2 skimmers, 1 main drain, Polaris 280, iAqualink, blower, Jandy Heater

  10. Back To Top    #10

    Join Date
    May 2008
    Location
    Long Island, NY
    Posts
    151

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    I just ordered a 1.5hp Ecotech EZ VS motor to replace the motor on my 1.5 hp SuperPump. I got it for $340 shipped. No need for a separate comtroller since it has a timer built into the drive. They do have a interface to integrate with a separate controller. For the cost and flexibility, look into the Ecotech EZ motors.

    Pool Details: 25,440 Gal IG Vinyl 21x40 Mountain Pond (Graphex)
    Filter: Hayward Micro-Clear DE (48 Sq Ft)
    Pump: Hayward SP2603VSP VS Super Pump
    SWG: Circupool Si45
    Cleaner: Pentair Kreepy Krauly Prowler 820

  11. Back To Top    #11

    Join Date
    Feb 2014
    Location
    santa barbara, california
    Posts
    55

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Quote Originally Posted by acamato View Post
    I just ordered a 1.5hp Ecotech EZ VS motor to replace the motor on my 1.5 hp SuperPump. I got it for $340 shipped.
    Where did you find the pump for that price?

    thanks, Brian
    15,000 ig plaster (kidney shape approx 30'x16'), Hayward 1.5hp "Max-flo" pump, Hayward DE filter(48 sq. ft effective filtration area, 96gpm, 6lbs DE), TF-100 Santa Barbara, CA

  12. Back To Top    #12

    Join Date
    May 2008
    Location
    Long Island, NY
    Posts
    151

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    I got just the motor.
    http://www.hydropool.com/cgi-bin/hyd...EVSS15-NS.html

    I found a $10 off coupon code thru a google search.
    Pool Details: 25,440 Gal IG Vinyl 21x40 Mountain Pond (Graphex)
    Filter: Hayward Micro-Clear DE (48 Sq Ft)
    Pump: Hayward SP2603VSP VS Super Pump
    SWG: Circupool Si45
    Cleaner: Pentair Kreepy Krauly Prowler 820

  13. Back To Top    #13

    Join Date
    Dec 2012
    Location
    NorCal
    Posts
    25

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    BRian,

    Check 1stoppoolsupply.com. They're in Lake Forest. Whatever you do, stay away from poolsupplyunlimited.

  14. Back To Top    #14

    Join Date
    Mar 2011
    Location
    Houston, Texas
    Posts
    413

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Quote Originally Posted by Lummy View Post
    BRian,

    Check 1stoppoolsupply.com. They're in Lake Forest. Whatever you do, stay away from poolsupplyunlimited.
    Did you have a recent problem with poolsupplyunlimited.com? I bought all of my equipment from them in 2010 and a SWG in early 2011 and the experience could not have been better. I received prompt delivery, they accepted a return without question and the prices were very competitive. I saved about $1,500 vs. a local pool supply company.
    9,200 gal. Gunite Luna Quartz French Grey pool with spill over spa, two fountains on tanning ledge (rarely used)
    Pentair Whisperflo 2HP, Pentair CCP Cartridge 420 Sq. Ft., Polaris 280 with booster pump
    Pentair EasyTouch 4, RayPak LoNox 266k Natural Gas heater, Aqua Rite SWCG T Cell 9, Borates, TF-100 test kit

  15. Back To Top    #15

    Join Date
    Dec 2012
    Location
    NorCal
    Posts
    25

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Yes, I am having problems with them. I won't go into detail until this is resolved to my satisfaction. I will say that a lot of the reason I went with them (for more money in fact) was due to the positive feedback here.

  16. Back To Top    #16

    Join Date
    May 2008
    Location
    Long Island, NY
    Posts
    151

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Quote Originally Posted by Lummy View Post
    BRian,

    Check 1stoppoolsupply.com. They're in Lake Forest. Whatever you do, stay away from poolsupplyunlimited.
    If I decided to get the 3hp motor, I would have purchased it from 1stoppoolsupply.com. They were more $$ for the 1.5 hp motor shipped.

    Pool Details: 25,440 Gal IG Vinyl 21x40 Mountain Pond (Graphex)
    Filter: Hayward Micro-Clear DE (48 Sq Ft)
    Pump: Hayward SP2603VSP VS Super Pump
    SWG: Circupool Si45
    Cleaner: Pentair Kreepy Krauly Prowler 820

  17. Back To Top    #17

    Join Date
    Dec 2012
    Location
    NorCal
    Posts
    25

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    well, you ARE on the other side of the country

  18. Back To Top    #18

    Join Date
    May 2008
    Location
    Dallas, TX
    Posts
    26

    Re: Replacing 1.5 HP Pool Pump with Dual Speed or Variable Speed

    Hmmmmm...Now you have me thinking about replacing the motor and pump parts. Then, I wouldn't have to re-plumb a new pump. I need to check my aqualink and see how many available relays I have. Do I need a relay for each motor speed that I want to automate? I saw an instruction manual for the Ecotech that showed needing 4 relays.

    Are there any other suggestions for different options?
    16,000 gallon IG gunite pool w/attached spa, Pentair Intelliflo VS, Sta-Rite DE Filter, 2 skimmers, 1 main drain, Polaris 280, iAqualink, blower, Jandy Heater

Posting Permissions

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