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CircuPool Universal40 Salt Chlorine Generator
CircuPool Universal40 Saltwater Chlorinator System

CircuPool Universal40 Salt Chlorine Generator

Part Number: UL40
Availability: In Stock.
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CircuPool UL40 Complete Salt Pool System with 4-Year Limited Warranty, for up to 40,000 gallon pools
Power 2.0 lbs/day
Warranty 4 Year Limited*
Rated Lifespan 10000 Hours
Max Capacity 40000 Gallons

The CircuPool Universal Series is a top choice for value and convenience for backyard saltwater pools. Serving as an easy replacement for any size existing Hayward® AquaRite® unit, the Universal40 is an upgrade with guaranteed compatible plumbing.

With higher power and a longer lifespan than many popular brands, its digital controller works automatically with your pump & filter and constantly monitors the salinity level and temperature of the pool which makes operation incredibly simple!

Featuring long lasting titanium electrodes and backed by award-winning service and warranty, it's one of the best values of almost any salt system in the price range. The Universal40 is an outstanding choice for anyone looking to upgrade or just dive into a great new salt chlorinator and provide more chlorination power!

This adaptable system is intended to easily replace any existing Hayward style salt system with a 15,000 to 40,000 gallon rating, so the Universal40 can replace any size Hayward Aqua Rite systems with no cutting or gluing, making it a snap to upgrade your salt pool system!


  • 4-year prorated warranty on every single component.
  • Includes plumbing unions for all sizes.
  • Dual voltage option: 110/220v.
  • CircuPool products are backed by USA-Based Expert Support & USA-Based Factory Warranty

Compatible System Replacement for: Hayward® Goldline Aqua Rite®, SwimPure Plus®, AquaRite 900®, SwimPure Extreme®, Mineral Springs®, NatureSoft®, AquaPlus®, LeverEdge Guardian®, Blue Essence®, H40 systems and more. Please note that this model's individual components are not intended to be interchangeable between brands (ex: use of one brand’s electronics with another brand’s cell).

*Please note CircuPool products are not affiliated with Hayward Industries, Inc. The use of such trademarks herein is for informational purposes only, and the product(s) are not those of Hayward Industries Inc., but rather are simply compatible with the referenced Hayward product.


General FAQ

Rating Snapshot

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Average Customer Ratings


replace the Hayward System for 1/2 the cost because it installs the same way it took about 15 minutes to R/R and have running. So far it has only been a week but all looks well. Ordering was easy. I paid for a faster shipment which was on time. all and all good expericence. Thanks for the Service
Did you find this helpful?  31 of 33 Found Helpful
Reviewed by:  from FL on 4/3/2021
Great salt system, like it more than aquarite
First of all I just want to say that this is my first time using a circu pool salt system, I've always dealt with pentiars or aqua rite. The system is very user-friendly in my opinion, even more than the Aqua Rite. All the instructions are right on the door, you can browse through different things by pressing a button and the lights tell you when something is working and when it's not so it can't be easier to read then that. The salt cell it's just as a Hayward Aqua Rite and the control panel resembles the aquarite as well but it actually has more options and more information than the Aqua Rite. Installation was a breeze and simple. The only thing that I found that's different from an Aqua Rite It's that low salt it's about 3000 and high is 4000, although it will still keep generating off to 2600 it works better if you keep your salt 3400 +. If you're coming from a Hayward Aqua Rite, this is the perfect replacement for it and with a 40000 gallon capacity salt cell, you can't beat the price. Last but not least the unions come with adapters for 1 and 1/2 in and two and a half which I thought was also great since he saves you the need to find a reducer if you have a two inch system.
Did you find this helpful?  29 of 32 Found Helpful
Reviewed by:  from Winter park on 7/13/2018
best thing I've ever done
I am fanatical about my pool, this is the best thing I have ever done for it. Excellent chlorinator. I even tested it, I stopped adding chlorine to my pool for a week before I installed it. Right when the pool measure zero chlorine and got a little cloudy, I started this chlorinator up and let it run on high. By the next day my chlorine level was too high! Now I run it for 6 hours a day on about 30%, and the pool stays perfect.
Did you find this helpful?  16 of 17 Found Helpful
Reviewed by:  (Verified Buyer)  from Norwalk, OH on 6/14/2016
new model better than old
I had an older version of this, and instead of replacing the cell I just bought this whole system instead because I got it on sale. I'm an engineer and I appreciated the updates they made to the product. I thought the cooling fan was a nice touch. Now I have my old one for parts, and this new one has my pool up and running again. It was a great system, and its even better now.
Did you find this helpful?  13 of 13 Found Helpful
Reviewed by:  (Verified Buyer)  from Fort Worth, TX on 2/8/2017
Unit works great!
Easy to install, easy to understand instructions and seems to be high quality. It included everything I needed in 2 sizes, 1.5 and 2 inches. Support was excellent as I had a high salt reading which was a breeze. I'd highly recommend this unit.
Did you find this helpful?  13 of 14 Found Helpful
Reviewed by:  from Upstate NY on 6/19/2021
There are no reviews yet
Questions From Customers

Q: Is it OK for this cell to be installed vertically, or does it need to be installed horizontally?

Asked by: Al - 6/5/2017
A: This system's cell can be install either horizontally or vertically.
Was this answer helpful?  18 of 22 Customer(s) found this Answer helpful.
Answer provided by: David (6/5/2017)

Q: Does this have all the equipment necessary to replace a chlorine system?

Asked by: Barry - 7/5/2017
A: Yes, this is the complete system.
Was this answer helpful?  15 of 18 Customer(s) found this Answer helpful.
Answer provided by: Robert (7/6/2017)

Q: How long is the cord on the cell that ships with this unit?

Asked by: DGS - 6/13/2017
A: The Universal40 has a standard cell cord which is approximately 15'
Was this answer helpful?  10 of 12 Customer(s) found this Answer helpful.
Answer provided by: David (6/13/2017)

Q: Can this system be used in above ground pools?

Asked by: Dennis - 4/8/2017
A: Yes, this system is able to be used on both above-ground and in-ground swimming pools. It comes with 1.5" and 2" unions as well.
Was this answer helpful?  8 of 10 Customer(s) found this Answer helpful.
Answer provided by: Andrew (4/8/2017)

Q: Can you use an existing Hayward flow switch?

Asked by: Charles - 5/16/2017
A: Yes, or you can easily unscrew the existing flow switch sensor from it's PVC housing in your plumbing and screw the new flow switch back in its place.
Was this answer helpful?  5 of 7 Customer(s) found this Answer helpful.
Answer provided by: Jordan (5/16/2017)

Q: The unions have a round rubber O-ring that is placed between them to seal the connection. Where can replacements be fou

Asked by: Chris - 4/29/2017
A: You can find replacement o-rings for your model here:
Was this answer helpful?  3 of 5 Customer(s) found this Answer helpful.
Answer provided by: Nathan (4/29/2017)

Q: will this replace a Pentair ic40 with out cutting plumbing except for flow switch ?

Asked by: butch - 6/12/2017
A: If you are switching from a Pentair IntelliChlor model, most people actually prefer the CircuPool SJ models. They have an adapter kit to connect to your current fittings, so it takes virtually no work to make the switch. Operation will be very familiar, but it has some other benefits as well. The SJ cell is clear so you can see it working and check it without having to disassemble everything. The SJ does not require acid cleaning like the Pentair. Even better, when it comes time to replace the cell, the SJ cells are much less expensive.
Was this answer helpful?  3 of 5 Customer(s) found this Answer helpful.
Answer provided by: Nathan (6/12/2017)

Q: Are there replacement cells for this unit? If so, what model?

Asked by: Judd - 5/8/2017
A: Yes, you can see the CircuPool Universal40 replacement cells here:
Was this answer helpful?  2 of 4 Customer(s) found this Answer helpful.
Answer provided by: Nathan (5/9/2017)

Q: Does this include all the parts needed?

Asked by: PR - 5/22/2017
A: Yes, this is the complete system.
Was this answer helpful?  2 of 3 Customer(s) found this Answer helpful.
Answer provided by: John (5/22/2017)


Asked by: SMITTY - 9/9/2017
A: Yes, this is a direct replacement for a Hayward / Goldline Aqua Rite. The cell is the same length and has the same threading so it can be easily replaced. You should be able to unscrew the sensor of the existing flow switch from its PVC housing, and screw the new flow switch back into place. The controls should be able to be hooked up the same way as well. The old T15 cell is not going to be compatible with the new controls; the new cell is more powerful and is different internally, so the new controls are designed to work with the new cell.
Was this answer helpful?  1 of 2 Customer(s) found this Answer helpful.
Answer provided by: Terry (9/11/2017)

Chlorine Output:

2.0 lbs /day

Manufacturer Warranty:

4 Years Limited*

Manufacturer Rated Lifespan

10,000 hours

Manufacturer Max Capacity:

40,000 gallons


Digital - LCD Screen, LED Indicators

Salinity Range:

3000-4500 ppm

Salinity Test:

Yes - High, Low, Displays ppm


Yes, Reverse Polarity

Warranty Penalty for Self-Install:


Clear Cell:


Boost Mode:

Yes, 24 hours

Winter Mode:


Flow Sensor:

Yes, Independent Flow Switch

O-Rings Included:


Unions Included:


Union Size:

1.5" & 2”

Power Cord Length:


Cell Cord Length:


Cable Connection Type:



22 lbs

Rated Amperage (120V/240V):

2A / 1A

Weather / UV-Resistance:

Designed for Outdoor Installation and Operation

The CircuPool Universal40 controls feature a steel sheet-metal box with hinged and latching door, similar to the panel on a circuit breaker. Thanks to the keyholes on the control box, it’s easily mounted to a nearby wall, post, or support with the help of a few basic screws secured to the wall or other support.

Inside the Control Center door, there’s a small LCD screen that displays average salinity readings, temperature, cell voltage, cell current, your chosen chlorine output percentage, instantaneous salinity, and different cell type settings.

These controls have a dial that can be used to raise or lower the chlorine output, and a three-position switch to activate or deactivate the system, or activate the super chlorination mode.

The electrolytic cell for the Universal40 is housed in opaque-plastic and contains built-in titanium electrode plates and a built-in power supply cord.

The housing also features matching threaded connections on the inlet and outlet which fit the Hayward Aqua Rite for easy, direct conversion and quick access for maintenance, cleaning, or seasonal removal.

These threaded connections attach to 2” and 1.5” unions, which can be glued to the existing PVC return-line plumbing.

The CircuPool Universal40 includes two 2" Threaded Unions, two 1.5" Threaded Unions, Flow Switch, 1.5" Flow Switch adapters, and Instruction Manual.
Manufacturer 4 Year Limited Warranty for residential use. Most manufacturer chlorine generator warranties are pro-rated. All warranties offered are provided by the relative manufacturer and are limited to the terms and proration they provide. See manufacturer's documentation for a full description of warranty terms and conditions.