Do you use sanitizer, spa shock, pH Increaser, pH Decreaser, and Total Alkalinity Increaser almost every week? Are you tired of all these chemicals to keep your hot tub or pool clean? We have a solution that will save you time, money, and strength.
It is a salt chlorine generator. It does not require as many chemicals as typical sanitizers, and it cleans the water nonstop. If you are allergic to chlorine, a salt chlorine generator is ideal for you because it reduces the risk of skin and eye irritation.
In this article, we will discuss the pros and cons of the top-5 salt chlorine generators on the market. You will learn about the important factors to consider when buying a salt chlorine generator and will understand why the salt system is better (or worse?) than the usage of typical sanitizers.
📌 Helpful note before reading: the cell is a part of the salt chlorine generator, where the salt converts into chlorine.
| Model | |
The best flow sensor | Power: 2.1 lbs/day Item weight: 20 pounds Capacity: up to 40000 gal. Lifespan: 10000-15000 hours Salinity range: 3000-4000 ppm ✅ Has a cell failed indicator; ✅ The cell is self-cleaning. |
The most durable model | Power: 1.4 lbs/day Item weight: 8 pounds Capacity: up to 40000 gal. Lifespan: Not stated Salinity range: 2800-4500 ppm ✅ Includes a cell-life tracking which communicates remaining hours of cell life in real-time; ✅ Has an automatic shut-off feature. |
The best salt level indicator technology | Power: 0.07 lbs/day Item weight: 2.31 pounds Capacity: up to 1000 gal. Lifespan: 7000 hours Salinity range: 2000 ppm ✅ Has an easy-to-use control box; ✅ Does not require the spa to be turned on. |
The best at keeping water clean | Power: 2.1 lbs/day Item weight: 24.8 pounds Capacity: up to 40000 gal. Lifespan: 10000 hours Salinity range: 3000-4500 ppm ✅ Has a 4-year warranty; ✅ Does not require professional installation. |
The best at the fight against algae | Power: 0.4 lbs/day Item weight: 2 pounds Capacity: up to 20000 gal. Lifespan: Not stated Salinity range: 3000-4000 ppm ✅ Can be used for above ground and in-ground pools; ✅ Does not require plumbing. |
We did not include the Saltron Salt Water Chlorine Generator. While this model has some advantages, it is not as modern as we would have preferred to include in this article. Its main strengths are easy installation and low electricity consumption.
To select the top 5 salt generators on the market, our team conducted in-depth research led by hot tub expert Peter Rossi, who has more than 10 years of experience in hot tub designing for the Jacuzzi Group. Each model we reviewed underwent multiple selection stages, with only the best remaining after each step.
For a more detailed understanding of our selection process and criteria, we attached the screenshot of our calculation process below. We believe that the transparency of our methodology ensures that you can make informed decisions based on reliable information.
Let us begin with the basics of the salt chlorine generator to understand how it works. It takes the salt dissolved from your hot tub or pool water and turns it into chlorine using A process in which an electric current is passed through a solution of salt (or a solution of another substance) to start a reaction that decomposes the substance into elements or different compounds. [1]. So, every generator has:
Chlorine generators operate in a cycle, drawing salt water from your hot tub or pool on one side and returning chlorinated water on the other side. First, add the required amount of salt to the water, as specified in the manual. Then, turn on the pump (or let the timer do it).
The saltwater gets to the cell, where it will be separated into sodium and chloride and turned into chlorine gas with the help of a low-voltage current. After that, the chlorine gas rids the water from algae, bacteria, and dirt. The final step is the conversion of the chlorine gas to chloride in the chlorinator. This chloride combines with the sodium to result in salt [1]. This is how the cycle works.
During the research, our team identified four key parameters that you should pay attention to when choosing a salt chlorine generator. After analyzing customer feedback for each model, we determined that the majority of users consider these criteria to be crucial.
Also, consider factors such as installation complexity, clear instructions, customer service, and the time needed for routine cleaning. Based on these factors, we have chosen the best salt chlorine generators, which you can find below.
Category winner:
The best flow sensor
| Power: Item weight: Capacity: Lifespan: Salinity range: | 2.1 lbs/day 20 pounds up to 40000 gal. 10000-15000 hours 3000-4000 ppm |
The Blue Works Chlorine Generator is ideal for those who want to regulate the water flow. This model has a water flow detector that has clear marks for flow directions. If the water flow is too high or too low, the system will shut the flow to prevent damage. Also, this model has a cell failed indicator, it will inform you if something is wrong in the cell, which is important to keep your water chlorinated and safe. It is also compatible with plumbing and chlorine generation systems like Hayward Goldline AquaRite, SwimPure, AquaRite XL, NatureSoft, SmartPure, Mineral Springs, and Blue Essence.
Like the Circupool Salt Water Chlorinator (review), the Blue Works Generator also has LED indicators, which users find very clear and easy to read. The difference is that the Blue Works Generator has a digital screen, while the Circupool Salt Water Chlorinator has an A liquid-crystal display is a type of flat-panel screen commonly used in TVs, computer monitors, and other electronic devices. one that offers a dimmer picture.
Regarding the warranty, there is also a difference between these models. The Blue Works Chlorine Generator has a 2-year warranty that is less than some models in our list but two times more than the Solaxx Salt Chlorine Generator (review).
“Great value and quality for the price. The generator was really easy to install, I didn’t even have to contact tech support. It runs 12 hours a day without any problems and is less expensive than many models on the market. I have an outdoor pool, and it rains a lot here, despite this I have not noticed any problems with chlorine levels, which I am very happy about.”
– Review by Rodney, FL
Category winner:
The most durable model
| Power: Item weight: Capacity: Lifespan: Salinity range: | 1.4 lbs/day 8 pounds up to 40000 gal. Not stated 2800-4500 ppm |
With the Pentair Salt Chlorine Generator Cell, you will be sure that your investment will pay off, as you will use it for at least 3 seasons. To get maximum durability, clean the cell every three months, which is, by the way, very easy as the manufacturer has added a lot of features to prolong the cell life.
Firstly, it is the only generator that has a real-time tracker to tell you how much time the cell will work depending on environmental conditions. It also has an automatic shut-off feature that will work if the water temperature is low for a long period. To maximize cell life, it also has an on-time cycling feature that prevents the buildup of calcium and scale.
We have recommended the ControlOMatic Salt Water Chlorine Generator (review) as the best generator for controlling the salt concentration. According to users, the Pentair Salt Chlorine Generator Cell does the job almost as well. Although this model does not have a vacation mode or high current shutdown, it checks not only the salt level but also the cleanliness, sanitizer output, and water flow. You can see all these readings on the two-color status displays.
However, remember that you need to buy the power system separately. We agree that it may be inconvenient, but it’s a good investment for your free time and relaxation.
“Very happy with this purchase. Despite my distrust of the delivery, I received exactly what ordered. The generator is very easy to install. Although the price is not low for me, it is still cheaper than buying chlorine all the time. My generator has been working for 2 years and hope it will last another year or two. During this time I have hardly brushed my pool as the water is always clean. Great product for those who value their time and money.”
– Review by Bradford, VA
Category winner:
The best salt level indicator technology
| Power: Item weight: Capacity: Lifespan: Salinity range: | 0.07 lbs/day 2.31 pounds up to 1000 gal. 7000 hours 2000 ppm |
With the ControlOMatic Salt Water Chlorine Generator, you will be sure whether the amount of salt that you use is enough or not. This salt chlorine generator has the best salt level indicator technology. There is one specific feature — a vacation mode. When the generator is inactive for 2 weeks, it will reduce the chlorine output. The water will be clean, but the usage of salt will be reduced.
Another advantage noted by users is the high current shutdown function. It will come into action if you accidentally put in more salt than you should. The idea is to protect the power supply and titanium plates from the high salinity.
As in all models, it shows low, normal, and high salt levels. Thanks to this, you will know when you need to add salt. There is also an automatic cleaning feature, like in the Blue Works Chlorine Generator (review). The generator reverses from time to time polarity for this. If you need to, you can easily take out the cell and clean or replace it, which, according to the owners that we interviewed, is very convenient and time-saving.
The only disadvantage of the ControlOMatic Salt Water Chlorine Generator is that it is less powerful than other models on our list. But this is because it can be used only with hot tubs or spas that have up to 1000 gallons capacity.
“I don’t write reviews often, but this product deserves five stars. Don’t worry about the price, this generator is worth every dollar. I used to have constant problems with green water and a bunch of chemicals I had to use. With this salt system, I forgot about those problems. Now I just add salt and sometimes adjust the pH level, and the water stays crystal clear. What is very convenient is that the generator itself will let you know if the salt concentration is too high or low.”
– Review by Kheil, MT
Category winner:
The best at keeping the water clean
| Power: Item weight: Capacity: Lifespan: Salinity range: | 2.1 lbs/day 24.8 pounds up to 40000 gal. 10000 hours 3000-4500 ppm |
The Circupool Salt Water Chlorinator has the most powerful chlorine output (2.1 lbs/day) that keeps the water in your hot tub or pool clean and soft (free from calcium, iron, and magnesium). The Blue Works Chlorine Generator (review) has the same output, but 67% of users claim that the water is not as soft. Also, this model works with a wide salinity range (3000-4500 ppm). This means that this range will provide you with the cleanest water.
During our tests, Peter Rossi noticed that although this model reads salt levels in water, the number is a little higher than with the strip test. You can use saltwater test strips to be sure that you know the correct readings. Despite this, most buyers don’t consider it a big problem.
One more advantage of this model is the installation process. It is so easy that you can do it on your own. The Circupool Salt Water Chlorinator is easily compatible with any size Hayward, Goldline, and Aqua Rite plumbing. It will take you around 2 hours to remove your old system and install this one. Self-installation does not affect the warranty for Circupool and that is why you will be able to receive a 4-year warranty should you need it.
“Best customer service. The generator is well-made and has a user-friendly control panel. Installation didn’t take long, but I had a problem with the timer connection. Called CircuPool and within 5 minutes my generator was completely installed. Very happy with this product.”
– Review by Dennis, TX
Category winner:
The best at the fight against algae
| Power: Item weight: Capacity: Lifespan: Salinity range: | 0.4 lbs/day 2 pounds up to 20000 gal. Not stated 3000-4000 ppm |
If you struggle with algae problems every summer, then the Solaxx Salt Chlorine Generator is the best choice for you, as it maintains the perfect chlorine level. Its chlorine output is not as powerful as the previous two models, but it doesn’t need to be, because it is designed for water of half the volume. Also, this model has a programmable digital timer that will automatically turn the pump on and off. Most users noted that it is very useful, as you can adjust the turning on/off time and go about your day.
Another advantage is that you hardly need additional chemicals. The Solaxx Salt Chlorine Generator uses less salt than other models, as many users have noted, for example, it needs 12% less salt than the Blue Works Chlorine Generator (review). Thanks to this, you will get more chlorine by adding less salt than in other models, and the water in your hot tub or pool will be clean the whole season.
“Would definitely buy a second time. This generator is worth every penny! I can’t be happy with how easy it has been to maintain my pool since this purchase. The generator just babbles on the side of the pool and makes the water clean without any effort on my part. I think it paid for itself in just one season. It’s amazing how much time and money I have saved on chemicals with this generator.”
– Review by Colby, CA
There are some advantages and disadvantages of using salt chlorine generators instead of typical sanitizers like chlorine and bromine.
✅ Pros:
⛔️ Cons:
There are 5 steps to convert your hot tub to a saltwater one.
An in-line system means that you attach the cell to the hot tub’s plumbing. This system has no visible wires. All other models in our list are in-line.
We have mentioned the importance of chemicals while using salt chlorine generators a few times. So, here is the list of them:
You can use only NaCl salt with a purity of at least 99%. Remember that it is easier to raise the salt concentration than reduce it. That is why for the first time we recommend using 75% of the recommended amount of salt and then testing the water.
Salt test strips are one of the easiest and fastest ways to check the salt level in your hot tub or pool. Using them, you can check whether your salt chlorine generator shows accurate readings.
Use when pH is less than 7.2
✅ Raises pH level
✅ Increases effectiveness of sanitizer
✅ Prevents corrosion of metal parts (such as a heater, or pump)
Use when pH is over 7.8
✅ Lowers the pH and total alkalinity
✅ Increases effectiveness of sanitizer
✅ Prevents scale formation
Total Alkalinity (TA) and pH levels are interrelated. Without proper TA, you cannot adjust the right pH level. Low alkalinity (80 ppm) causes corrosion of metal parts and that is why you need to use a TA increaser. There is no TA decreaser but you should use a pH decreaser instead. A too-high TA (150 ppm) level will cause cloudy water and make chlorine less effective in dealing with bacteria.
Chlorine shock is a quick solution, as it kills all algae and bacteria. The water will be ready for swimming in 15 minutes.
Experts recommend cleaning the filter monthly to prolong its lifespan. Suitable for both hot tubs and pools, this filter cleaner is an excellent choice.
A salt chlorine generator is a good alternative for those who want to spend less time maintaining their hot tub or pool. It is gentle on your skin, which is suitable for those people who are allergic to chlorine.
Before investing in a salt chlorine generator, our team recommends paying attention to the generated chlorine level, the durability of the generator, and whether it has a warranty. Other factors to consider include the simplicity of the installation, clear instructions, customer service, no cell problems, the simplicity of keeping it clean, less use of chemicals, and an accurate data display. Below, you can see our choice of top-5 salt chlorine generators.
| Winner in the category The best flow sensor |
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| Winner in the category The most durable model |
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| Winner in the category The best salt level indicator technology |
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| Winner in the category The best at keeping water clean |
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| Winner in the category The best at the fight against algae |
It depends on your hot tub or swimming pool size. Most users prefer to choose a generator with a maximum capacity of 1.5-2 times higher than the actual pool or hot tub size.
The best salt chlorine generators in 2024 are:
– Circupool Salt Water Chlorinator — the best at keeping the water clean
– Blue Works Chlorine Generator — the best flow sensor
– ControlOMatic Salt Water Chlorine Generator — the best salt level indicator technology
– Pentair Salt Chlorine Generator Cell — the most durable model
– Solaxx Salt Chlorine Generator — the best at the fight against algae
A salt chlorine generator typically lasts at least 3 years, and with proper care, its lifespan can extend up to 7 years.
The saltwater system has its pros and cons. It requires fewer chemicals and is gentle on your skin and eyes. However, there is a possibility of corrosion, and the cells can be expensive to replace. You can explore more pros and cons of salt chlorine generators in our article.
The cell of a salt chlorine generator should be cleaned at least twice a year. Some models such as the Pentair Salt Chlorine Generator Cell require cleaning every 3 months.
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