10 Best offline chlorinators of 2025

Explore top picks

Best Choice

1

Hayward
Hayward CL220 Off-line Automatic Chemical Feeder
Main highlights

Key Features
Features easy feed rate adjustment, secure Easy-Lok cover, and durable ABS body. Ideal for precise, safe, and long-lasting tablet dispensation.

Ideal Use Cases
Perfect for maintaining pool or spa water quality, especially in scenarios requiring consistent chlorine levels with minimal maintenance effort.

Customer Praise
Most reviews highlight its reliability and ease of use, particularly appreciating the secure cover and the simplicity in adjusting the feed rate.
9.8

Exceptional

Our Rating

9.1
Easy installation

8.9
Simple to take off

8.2
worth the money
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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Value for Money

2

Pentair
Pentair R171016 Rainbow 300 Automatic Chlorine/Bromine Off-Line Pool and Spa Feeder
Main highlights

Key Features and Benefits
Fully enclosed system prevents fume escape, no venting needed, easy top-loading for chemical addition, and supports up to 50 PSI.

Ideal Use Cases
Perfect for small-scale chemical processing, laboratory work, or any environment needing safe, easy-to-manage chemical handling.

Customer Reviews Highlight
Users highly praise its foolproof design and the convenience of not requiring special venting, making it a hassle-free choice.
9.6

Exceptional

Our Rating

8.7
Simple to use

8.4
Easy installation

8.4
Simple to take off
3

Yhaofu

Professional CL220 Off-line Automatic Pool Chlorinator for Swimming Pool Ponds Garden,Replacement for Hayward CL220 Automatic Chlorinator Feeder,9 lbs Capacity and ABS Material,Easy Installation
9.4

Excellent

Our Rating
4

LONGADS
CL220 Off-line Automatic Pool Chlorinator for Swimming Pool Ponds Garden,Replacement for Hayward Chlorine Feeder,Economy in-Line Above-Ground Pool Automatic Chlorine Bromine Feeder,Easy to Install
Main highlights

Simple Operation and Installation
The Easy-Lok threaded cap, finger release button, and 360 control knob ensure simple, safe operation. Easy installation with included accessories saves time and money.

Ideal for Pool Water Purification
The CL220 Off-line Automatic Chlorinator is perfect for maintaining clean, purified water in swimming pools by automatically adding chlorine tablets.

Ease of Installation
Customers frequently praise the ease of installation and the value for money, despite occasional reports of minor leaks.
9.2

Excellent

Our Rating

9.3
Easy installation

8.0
Durability

8.0
Simple to take off
5

SET SUNSOLAR ENERGY TECHNOLOGIES

SUNSOLAR Automatic Above Ground Pools and In-Ground Pools- Free Standing Off-Line - Dispenser Holds 9 lbs - Includes Installation Kit
9.1

Excellent

Our Rating
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6

XtremepowerUS

XtremepowerUS Automatic Chlorinator Feeder for Above Ground Pools & In-Ground Pools Off-Line - Dispenser Holds 9LBS Includes Installation Kit
9.0

Excellent

Our Rating
7

Miory

Upgraded R171016 Pool Chlorinator 300 Chlorinator Compatible with pentair Rainbow R171016 300 Automatic Chlorine/Bromine Offline Pool Feeder, Newly Upgraded Base and Control Valve
8.8

Very Good

Our Rating
8

Rx Clear

Rx Clear Automatic Chlorinator | for Above Ground Swimming Pools | Off-line Chemical Chlorine Feeder | Holds Up to 4 Pounds of Slow Dissolving Chlorine Tablets
8.5

Good

Our Rating
9

Topfurn

CL220 Off-line Automatic Pool Chlorinator for Swimming Pools and Ponds, ABS Material, 9 lb. Supply, Easy-Lok Threaded Cover,CL220 Off-line Automatic Chemical Feeder for Residential and Commercial Use
8.4

Good

Our Rating
10

U.S. Pool Supply
U.S. Pool Supply Professional in-Line Pool Automatic Chlorine Feeder, CL-220-9 lb Chemical Capacity, Compatible with Hayward Off-Line Chlorinator - Above Ground Swimming Pools, Easy Installation
Main highlights

Key Features
Easy to use, adjustable feed rate, durable ABS plastic build, and high-density seal for long life. Keeps pool clean effortlessly.

Ideal Use Cases
Perfect for any pool owner seeking a hassle-free solution to maintain chlorine levels using slow-dissolving tablets or sticks.

Customer Praise
Highly praised for its reliability, ease of installation, and effective maintenance of pool cleanliness and chlorine levels.
8.1

Good

Our Rating

8.0
Simple to take off

8.0
Easy installation

8.0
worth the money

10 Best offline chlorinators of 2025

1

Hayward CL220 Off-line Automatic Chemical Feeder

9.1

8.9

8.2

2

Pentair R171016 Rainbow 300 Automatic Chlorine/Bromine Off-Line Pool and Spa Feeder

8.7

8.4

8.4

3

Professional CL220 Off-line Automatic Pool Chlorinator for Swimming Pool Ponds Garden,Replacement for Hayward CL220 Automatic Chlorinator Feeder,9 lbs Capacity and ABS Material,Easy Installation

4

CL220 Off-line Automatic Pool Chlorinator for Swimming Pool Ponds Garden,Replacement for Hayward Chlorine Feeder,Economy in-Line Above-Ground Pool Automatic Chlorine Bromine Feeder,Easy to Install

9.3

8.0

8.0

5

SUNSOLAR Automatic Above Ground Pools and In-Ground Pools- Free Standing Off-Line - Dispenser Holds 9 lbs - Includes Installation Kit

6

XtremepowerUS Automatic Chlorinator Feeder for Above Ground Pools & In-Ground Pools Off-Line - Dispenser Holds 9LBS Includes Installation Kit

7

Upgraded R171016 Pool Chlorinator 300 Chlorinator Compatible with pentair Rainbow R171016 300 Automatic Chlorine/Bromine Offline Pool Feeder, Newly Upgraded Base and Control Valve

8

Rx Clear Automatic Chlorinator | for Above Ground Swimming Pools | Off-line Chemical Chlorine Feeder | Holds Up to 4 Pounds of Slow Dissolving Chlorine Tablets

9

CL220 Off-line Automatic Pool Chlorinator for Swimming Pools and Ponds, ABS Material, 9 lb. Supply, Easy-Lok Threaded Cover,CL220 Off-line Automatic Chemical Feeder for Residential and Commercial Use

10

U.S. Pool Supply Professional in-Line Pool Automatic Chlorine Feeder, CL-220-9 lb Chemical Capacity, Compatible with Hayward Off-Line Chlorinator - Above Ground Swimming Pools, Easy Installation

8.0

8.0

8.0

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