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The 8 Best automatic pool chlorinators of 2025

Are you trying to find automatic pool chlorinators among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling automatic pool chlorinators on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 26 hours of research and did 59 automatic pool chlorinators tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best automatic pool chlorinators you can buy today

No. 1
CL220 Off-line Pool Automatic Chlorinator Feeder Compatible with Hayward Off line Chlorinator Easy Installation, ABS Material, Easy to Use Automatic Chlorine
  • High quality: The main body is made of high-quality ABS material, the sealing part is made of high-density sealing material, and the lid is designed with a one-key easy-to-disassemble plate design, which can be easily installed and disassembled, making it longer and more durable. Can meet the use of functional requirements.
  • Simple installation: The offline chlorinator can be easily installed into your existing pump or filter production line. It is not original, but the quality meets the OEM standard, compatible with Hayward, and the installation is very simple and easy to operate.
  • Automatic function: You only need to put large or small chlorine tablets, rods or bromine tablets into the top placement cover, CL220 can easily and automatically process, so as to achieve the function of purifying tap water.
  • Upgrade content: The water inlet and outlet adopt a spiral design, the outer diameter is 2 inches, the inner diameter is 1-1/2 inches, suitable for applications with a flow rate of 50 gpm to 90 gpm. The package also includes a detailed English manual, which can be Make installation easier and more convenient.
No. 2
Pool Feeder
  • 【Thread】: Use PVC pipes to easily install it on new equipment.
No. 3
Hot Tub/Spa/Pool Chlorine Floater Chlorinator/Bromine Floater, Chemical Floating Dispenser for Pools, Premium Automatic Tablets Floaters,YLYL
  • SPA/HOT TUB/POOL CHLORINE FLOATER CHLORINATOR/BROMINE FLOATER: Adjustable bottom vents for proper chemical dispensing, great for holding 1.5”, Twist-lock cap keeps stored chlorine secure!
  • ADJUSTABLE AND AUTOMATICALLY: Chemical floating chlorine dispenser for pools have easy to remove twist lock lid, adjustable for custom dosage amounts, automatically releases chlorine/bromine into your pool, simple and easy to use!
  • MATERIAL: Chlorine tablets floatermade from premium durable ABS plastic, pool chlorine floater can be used all year, one chlorine tablets floater can be used for many years! Fits 1.5 inch Tablet Holder Automatic Chlorine Tablets Floaters.
  • WIDELY APPLICABLE: Tall: 5.2"/13.2 cm, Diameter: 4.92"/12.5cm perfect size for spa small pool, above ground pool, kid water park, Inflatable pool, etc, blue and white design that blends into any spa.
  • SATISFACTION GUARANTEED: Our team is committed to providing every customer with good spa/hot tub/pool chlorine floater chlorinator/bromine floater and satisfactory service. If there are any problems with our chemical floating chlorine dispenser for pools, contact us and we would be very happy to solve your problems. Be sure to Add to Cart.
No. 4
Pentair Rainbow 300-29X Off-Line Automatic Pool Chemical Feeder - R171070
  • Pentair Model: R171070
  • Automatically sanitizes pools using chlorine or bromine tablets and sticks with a 13 pound capacity
  • Off-line model retrofits into existing equipment plumbing with 1/4 inch feeder hose
  • Features a heavy duty control valve for accurate feed rate adjustments
  • Includes vent valve, lock ring, screen and check ball, flow-through circulation, external dial control and drain valve
No. 6
Poolzilla Automatic Chlorinator | for In-ground Swimming Pools | in-line Chlorine Feeder | Holds Up to 9 Pounds of Tablets
  • 💧【Premium Design】 Effortlessly manage and control your levels with the dial adjustment valve. This product is corrosion-proof and can be easily installed into your existing system.
  • 💧【For Up To】 Accommodates up to 9-LBS of tablets, the dial control valve makes it easy to adjust the feed rate.
  • 💧【Measurements】 15.5'' IN x 7'' IN x 7" IN -- works with both 3" and 1" stabilized tablets.
  • 💧【Compatibility】 This product is designed to fit standard 1.5" Schedule 40 PVC, enabling it to be used with a range of above-ground or in-ground filters and pumps.
  • 💧【100% Assurance Policy】 Poolzilla cares deeply about the integrity of our products. We promise a risk-free shopping experience fully backed by our Quality Control, Customer Service and Technical Support Teams, located in New Jersey.
SaleNo. 7
Pentair R171218 Rainbow 320C Automatic in-Line Chlorine/Bromine Feeder for Pool and Spa - Amber Body
  • In-line - Great for installation in the return line of your pool or spa system, in-line chemical feeders are literally plumbed "in line" with the other equipment in your system
  • Flow-through Circulation - Pentair's chemical feeders are built with flow-through circulation, which results in maximum clean water output
  • Efficient - Great for installation in the return line of your pool or spa system, in-line chemical feeders are literally plumbed "in line" with the other equipment in your system
  • Convenient - Great for installation in the return line of your pool or spa system, in-line chemical feeders are literally plumbed "in line" with the other equipment in your system
  • All Rainbow Feeders are NSF Listed
No. 8
in-line Automatic Pool chlorinator MAYGO CL200 Compatible Hayward CL200, Inline Pool Automatic chlorinator for Both Above Ground and Indoor Pool (9LB)
  • Put chlorine tablets into the CL200 in-line automatic pool chlorinator, which will distribute chlorine into the pool to achieve the effect of purifying pool water. 9lb can purify up to 41000 gallons of water
  • The 360° omnidirectionally designed control knob at the bottom can well control the speed of the water inlet and outlet, and can easily adjust the feeding speed and frequency, which is convenient and practical.
  • in-line Automatic Pool Chlorinator for Pool Ponds,The outer spiral of the inlet and outlet is 2-1/2 '', and the inner spiral is 1-1/2 ''.
  • MAYGO pool automatic chlorinator uses durable ABS material to replace Hayward CL200, greatly reducing the risk of cracking.
  • Before use, please carefully read the instructions, operation steps, and safety tips. If you encounter any problems, please feel free to contact us through our internal email. We will reply and solve your problem within 6 hours.
No. 9
MEFONKOU CLX200K Pool Chlorinator Lid O-Ring for Hayward CL200/CL220 (2/Pack)
  • Compatible with Hayward pool chlorinator lid and resistant VITON chemical feeder
  • Package includes 2PC CLX200K rubber o-ring, replacement model number CL200 CL220
  • Size approximately 5.5" outside diameter x 5.2" inside diameter x 0.2" thickness
  • The CLX200K O-rings are made of chlorine resistant viton rubber and are of high quality rubber
  • Easy to install, well sealed, and prevents leaks and poorly filtered pool backwash lines to improve the performance of your pool valves and filtration systems.
No. 10
320 Pool Chlorinator Compatible with Rainbow 171096 Automatic Inline Chlorine/Bromine Feeder, Can Handle Up to 70000 Gallons of Water
  • 【320 Functional】The Rainbow 320 pool feeder can handle 6500 to 27000 gallons of water at the bottom and 18000 to 70000 gallons of water at the top.
  • 【Upgrade Design】Firstly, we added white thickened gaskets to the top lid to enhance the overall sealing and avoid leakage; secondly, we designed an exhaust plug at the top to solve the problem of excessive internal pressure.Finally, the upgraded control valve is more flexible and durable.
  • 【High Quality】The 320 automatic in-line pool and spa feeder is constructed of ABS material throughout, with a thickened interior and inlet hose to increase its longevity and save you more time and money.
  • 【Installation Instructions】The R171096 Pool Feeder is suitable for installation behind heaters, cleaners and filters. If there is no heater, it can be installed directly after the filter, please pay attention to the installation order. Also, please clean the water inlet hose regularly to avoid clogging.
  • 【Attention】Our products include all the accessories you need, no need to buy extra. If you have any problems with your product, please let me know and we will do our best to help you.

How to choose a good automatic pool chlorinators

Does the idea of finding a fantastic automatic pool chlorinators make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in automatic pool chlorinators. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top automatic pool chlorinators products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top automatic pool chlorinators on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top automatic pool chlorinators brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top automatic pool chlorinators based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the automatic pool chlorinators were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good automatic pool chlorinators, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your automatic pool chlorinators.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting automatic pool chlorinators for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our automatic pool chlorinators. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what automatic pool chlorinators should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on automatic pool chlorinators.