14 best offline chlorinators

Offline chlorinators are devices used in swimming pools and hot tubs to introduce chlorine or other sanitizing chemicals into the water. These chlorinators are typically installed in the plumbing system of the pool or hot tub and are designed to automatically dispense the chemicals at a controlled rate. They are a key component of pool and spa maintenance, helping to keep the water clean and safe for swimmers.

Here are some key points about offline chlorinators:

  1. Installation: Offline chlorinators are typically installed in the plumbing system after the pool or hot tub pump and filter. This allows them to distribute chlorine evenly throughout the water as it circulates.

  2. Types of Chemicals: While chlorine is the most commonly used chemical in offline chlorinators, they can also be used to dispense other sanitizing chemicals such as bromine or mineral cartridges, depending on the pool or hot tub owner's preference.

  3. Automatic Dispensing: These devices are designed to automatically release the chemicals into the water in precise amounts. This helps maintain a consistent level of sanitation, reducing the need for manual testing and chemical additions.

  4. Adjustable Settings: Many offline chlorinators have adjustable settings that allow pool or hot tub owners to control the rate at which chemicals are dispensed. This flexibility is important for maintaining the correct chemical balance in the water.

  5. Safety Features: Offline chlorinators often include safety features to prevent over-chlorination, which can lead to skin and eye irritation. These features may include flow control valves and pressure relief mechanisms.

  6. Regular Maintenance: To ensure proper operation, offline chlorinators require regular maintenance. This includes cleaning the chlorinator cell and checking for any clogs or obstructions.

  7. Compatibility: It's important to choose an offline chlorinator that is compatible with the size and type of pool or hot tub you have. Different models have varying capacity and flow rates.

  8. Cost and Efficiency: The cost of an offline chlorinator can vary depending on the brand and features.However, they are generally considered a cost-effective way to maintain pool and hot tub water quality over time.

In summary, offline chlorinators are essential components for pool and hot tub maintenance, as they automate the process of chemical sanitization, making it easier for pool owners to maintain clean and safe water for swimming and relaxation.

Below you can find our editor's choice of the best offline chlorinators on the market
  

Hayward CL110 Off-line Automatic Chemical Feeder,Black

Hayward

Based on 69 reviews Check latest price

Product description

Hayward CL110 Off-Line Automatic Chemical Feeder. Efficient and maintenance-free, these durable, corrosion-proof automatic chlorinators and brominators are ideal for Newer existing pools or spas and work automatically with your pump and filter system.

  • Uses 3-Inch diameter Tricolor S tablets
  • Dial control valve lets you control and adjust the rate of feed
  • Easy-Lok threaded cover for safe and convenient access to add tablets
  • Unique finger-release catch provides extra security
  • Simple installation for do-it-yourselfers. Refer to the PDF attached below in Technical Specification for User Manual.

User questions & answers

Question: Any tricks for getting this open? I am ready to give it the worst review ever!!! Hate it
Answer: It is a little tough sometimes but you want a good seal. Sometimes I use a rubberized grip that you use to open jars. Good luck.
Question: Will this work with at 30ft round pool 22,000 gallon water
Answer: This should work for that size pool,you would probably have to fill it once a month or so. And turn it up. My pool is 18’ round and I set it at 1/4 open the tablets last about 2 months. Holds 7 3”rd. Tablets works well.
Question: Does it include all the tubes and fittings
Answer: Fittings are included... Tube is not.
Question: Do all fittings, clamps, tubing, etc. Required for the installation, come with the unit
Answer: The Hayward Off-line Automatic Chlorine Feeder model # CL110 includes hose, clamps, and fittings as pictured in the listing.

Hayward CL220 Off-line Automatic Chemical Feeder

Hayward

Based on 1 reviews Check latest price

Product description

The easy, economical and professional way to chlorinate your pool - PVC Pool Parts automatic pool chlorinators are efficient, corrosion-proof feeders designed for easy installation on new or existing pools or spas ranging up to a 9 lb. Capacity. The Hayward automatic chlorinators use large or small Tri-Chlor slow dissolving tablets or sticks - enough to supply three weeks of chlorine sanitation for a large pools and longer for smaller pools. The easy to use integral dial control valve lets you accurately adjust the rate of chlorinating needed to keep your pool sparkling clean.

From the Manufacturer

Hayward CL220 Off-Line Automatic Chemical Feeder. Efficient and maintenance-free, these durable, corrosion-proof automatic chlorinators and brominators are ideal for Newer existing pools or spas and work automatically with your pump and filter system.

  • Uses large or small, slow dissolving tablets
  • Dial control valve allows for easy feed rate adjustment
  • Easy-Lok threaded cover for safe and convenient access to add tablets
  • Unique finger-release catch provides extra security
  • Durable ABS body and high quality Viton seal for extended life

User questions & answers

Question: I can i stall this on a well system to purify water before entering the house
Answer: I wouldn’t try to purify the water with chlorine. That does not sound safe for consumption. You should check with a local company that purifies water. We had a water softener and a purifier but it used water softener salt and another component was the purifier.
Question: Why does the top become hard to twist open
Answer: I have never had a problem with mine , but i only tighten it till it clicks . i have never had any leeks either . when I purchased mine I bought extra o rings and the opener tool but haven't had to use them yet .
Question: Whats the difference between Hayward CL220 Off-Line Automatic , and Hayward CL200 Automatic Pool Chemical
Answer: The CL220 uses plastic tubing and saddle valves to attach to your pool plumbing. This allows you to drill two small holes into the existing pool plumbing (one hole in a piece of pipe between the pump and the filter and the other in a piece of pipe just after the filter) to install the feeder. It is designed to be easy to install. The CL200 is the same basic unit except that the ports on the bottom are threaded so that you can use threaded fittings to add it to your system. This requires a lot more knowledge about fittings, connectors and plumbing.
Question: does it include kit and o ring and kit needed for install
Answer: Yes, the kit includes everything you will need to install. You will have to drill a small whole into your feed and return line, but they will tell you in the instructions how to do all this. If you have any diy skills I'm sure you can handle it.

Product features

Hayward CL220 Off-line Automatic Chemical Feeder

Product Description:

Hayward automatic chlorinators and brominators are ideal for in-ground applications during new pool construction or aftermarket installations. Models are available for in-line and off-line configurations to accommodate most capacity, plumbing and space considerations. All units incorporate a durable ABS body along with a high quality Viton seal and an ergonomically designed cover to allow for simple lid removal.

  • Uses large or small, slow dissolving, Trichlor or Bromine tablets
  • Dial control valve allows for easy feed rate adjustment
  • Multiple connection options provide a wide range of use and simplified installation

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

Pentair

Based on 300 reviews Check latest price

Product description

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

  • Completely enclosed systems - no escaping fumes.
  • Simple, trouble-free design - no special venting required.
  • Top-loading makes it easy to add chemicals.
  • 50 PSI maximum operating pressure.

User questions & answers

Question: Can you use cal hypo tabs in this chlorinator
Answer: I’m not sure but I found this on …Pool Center.(Blog).com... Cal Hypo granular is used by either manually broadcasting or dissolving into water and pouring into the pool, or it can be used with a granular cal hypo feeder. Cal Hypo is also made in pellets and pucks, or tablets of various sizes, designed to be used in very specific feeders, usually made by the tablet manufacturer, although they could be used in floaters, or floating chlorinators. Most cal hypo feeders like the Accu-Tab or the Pulsar are expensive and complicated items, with exception to new models recently introduced, such as the CCH cal hypo tablet feeder.
Question: what type of chlorine tablets is recommend for this feeder pentair
Answer: 3 1/2 inch chlorine tablets
Question: This one i bought doesn't have a screen at the bottom of the unit. my old model 300 did. am i missing it
Answer: No screen. The exit elbow has a backflow preventer inside, which clogs up from time to time.
Question: I wonder if anyone has ever used this to dispense muriatic acid
Answer: Why would you use a TABLET dispenser to attempt to dispense a LIQUID acid? That makes NO SENSE! The plastic is not designed to handle acid. Give it a try though...You’ll probably have pool water being pumped all over the deck in very short order!

Automatic Pool Chlorinator Bromine Feeder Dispenser Chlorinator 9 Lbs Off-line

Pooline

Based on 100 reviews Check latest price

Product description

If you don't have room to install your chlorinator in line with the rest of your pool equipment, then you need an off-line chlorinator. This free standing offline automatic chlorinator will work for either in-ground or above ground pools. This chlorinator holds 9 lbs. Of chlorine tablets. The chlorinator is fully adjustable so you can regulate the speed at which the tablets dissolve, depending on your pool's chlorine demand. This unit is made of heavy-duty resin and is designed to be installed offline.

  • Good for slow dissolve tri-chlor tablets or Bromine sticks/tabs
  • Dial control valve lets you control and adjust the rate of feed
  • Fits 3'' chlorine tablets only
  • Easy threaded cover for safe and convenient access to add tablets or sticks
  • Corrosion resistant construction for long lasting life

User questions & answers

Question: Does it come with fittings
Answer: Yes, it comes with fittings and the black house lines.
Question: Where can I find oring for the lid
Answer: Pentair, Hayward and Swimline should have this part. Try Swimline first.
Question: Does this include everything in picture? How many feet of the black line is there and what is inside diameter of the black line
Answer: everything you need to install is included. 10 min job
Question: Is there a wrench available to purchase to take the lid off of this chlorinator
Answer: There may be but I never purchased it. The lid comes off pretty easy for awhile but then as time goes on it does get alot harder to take off. I'd email the seller to find out if they have one or can recommend one or just look up on Amazon/Google to see if you can find one that matches the pattern on top of Chlorinator.

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

Based on 102 reviews Check latest price
  • SAVE ON CHLORINE - Use and regulate your chlorine level effortlessly. Dial adjustment valve controls sanitizer flow. Corrosion-proof. Installs easily into existing filter system. In-Line feeders require PVC plumbing. Off-line feeders tap into the existing PVC.
  • HOLDS 4 LBS OF CHLORINE TABLETS - Small or large, slow dissolving, Trichlor tablets -Dial control valve allows for simple feed rate adjustment.
  • SIMPLE INSTALLATION - Easy-Lok threaded cover for safe access to add tablets.
  • NEVER USE - Any petroleum based lubricants on cover O-Ring. Regular lubrication is necessary to allow for easy cover removal. Use non-petroleum based lubricants such as Jack's No. 327 lube. Warranty - 1 Year.
  • CAUTION - Extreme care must be exercised when adding chemicals to your pool. Concentrated chemicals react violently if they mix in the chemical feeder, causing a fire or explosion, which may result in property damage, personal injury or death.

User questions & answers

Question: I need a replacement cover o-ring. how do i get one? is the hayward clx200k o-ring suitable
Answer: I had a Hayward before this and they matched up the same . Don't see why it wouldn't.
Question: I want to put a valve on the inlet tube. What size is the tubing
Answer: When I asked I was told the parts needed for connection are not included but mine came with all the parts , including the tubing. But just to let you know, this chlorinator has not worked well. I have not been able to find a setting to allow the water to flow thru it as it should. I think the dial does not work properly .
Question: What type of O-ring do i use for the lid
Answer: Nothing it comes built in, caution there's a arrow on the bottom and its hard to see for water flow be sure to plumb it that way.
Question: Can you install with pool solar? Or too corrosive
Answer: It should be installed last in line just prior to re-entering the pool because pure chlorine is very corrosive.

Product features

Circulation of Pool Water

The Rx Clear Automatic Chlorinator assists in saving on chlorine usage and regulating the chlorine level. The dial adjustment valve helps to alieve controls in sanitizer flow. Corrosion-proof. Installs into existing filter system without any hassle. In-line feeders require PVC plumbing.

Ideal Chlorine Levels

Rx Clear is the ultimate prescription for a crystal clear swimming pool. Steer clear from the threat of algae, bacteria growth, and unsafe pH levels. Rx Clear is your one-stop shop for chlorine, algaecide, clarifiers, and more. Rx Clear delivers fast-acting chemicals with powerful results.

Holds 4 Pounds of Chlorine

Keep your pool looking great this summer. This chlorinator holds as much as 4 pounds of slow dissolving, Trichlor tablets.

Installation Made Easy

Easily installs into an existing filter system and taps into the existing PVC. Includes an Easy-Lock threaded cover for safe access to add tablets.

Regulate Chlorine Levels

The Rx Clear Automatic Chlorinator is corrosion-proof and has a dial adjustment valve to control the flow of chlorine.

Custom 25280-300-000 Power Clean Ultra Off Line Chlorinator

CUSTOM MOLDED PRODUCTS INC

Based on 11 reviews Check latest price

Product description

Off-Line Chlorinator Clear Lid Powerclean Ultra Features Power Clean Ultra Off-Line Chlorinator / Brominator -Holds (12) 3 in. Tablets or 5 lbs of 1 in. Chlorine or Bromine Tablets -Designed to treat pools from 5,000 to 50,000 gallons -Can be used with Chlorine Tablets or Bromine Tablets -Clear lid for easy serviceability -Superior dial with 100% shut-off -Built in flow meter for easy adjustment -Installs easily onto existing equipment sets -Larger hose than comparable brands -Comes with two mounting brackets and tubing as well as 3/4 in. fitting for hard plumbing -Color - Clear Glass Lid

  • Power Cleaner Off-Line Chlor Clear Glass.

User questions & answers

Question: Will this "plug and play" into a system that has a hayward cl
Answer: I replaced my cl200 with this but I had to enlarge the holes to tap into the plumbing. Was easy if you have a steady hand even better if you have a step bit.
Question: How many 3in tablets will this hold
Answer: I use the 1inch tabs. Works better, I hardly ever have to shock it.
Question: Does this come with everything needed to install? tubing, Taps anything else
Answer: Yes, it has clamps for 1-1/2” or 2” pipes, comes with some black plastic hose, and the fittings to connect it all.
Question: what is the red tube above the control valve? how long do you think the glass top will stay clear and not cloud up
Answer: The red tube is a flow meter. There’s a bob inside the tube, the more flow you dial in, the higher the bob floats in the tube. The glass should never cloud up, I’ve only seen plastic ones get foggy.

Hayward CLX220J CL220 Off-Line Chemical Feeder 8-Feet Chlorinator Tubing

Hayward

Based on 112 reviews Check latest price

Product description

Hayward CLX220J CL220 Off-line Chemical Feeder 8-Feet Chlorinator Tubing

From the Manufacturer

Replacement Tubing for Hayward feeders

  • Replacement Tubing for Hayward feeders
  • Fits both Hayward chlorine and bromine feeders
  • Available in Hayward saddle fitting pack CLX220GA

User questions & answers

Question: Will this work with a Rainbow model
Answer: I used it on ballistic nylon. I think it might work because it made a solid repair on my suitcase.
Question: What is the outside diameter of this tubing? It says 1/4 inch but I'm pretty sure it is
Answer: Hello Darrlettris, I'm happy to help you with the Gear Aid Tenancious Tape Repair. This product is intended to be used to repair outdoor gear such as tents, waders, jackets and tarps. It's recommended use is for nylon, netting, plastic, vinyl and breathable fabrics. I would not recommend it's use for leather. If you have any other questions or concerns, please don't hesitate to contact us.

Product features

About Us

Our objective is to make your pool experience worry and hassle-free. That's why our equipment is engineered to work smart at keeping your pool sparkling clean and trouble free.

For over 80-years, we've been helping pool owners enjoy the pleasures of pool ownership by manufacturing cutting edge, technologically advanced pool equipment worldwide.

Our products include a complete line of technologically advanced pumps, filters, heaters, heat pumps, automatic pool cleaners, lighting, controls and salt chlorine generators-high-quality components engineered to work together.

Southeastern Swimming Pool Offline Chlorinator Hose Tubing Connection Kit w/Saddle Connectors Clamps

Based on 44 reviews Check latest price

Product description

Swimming Pool Offline Chlorinator Hose Tubing Connection Kit w/ Saddle Connectors Clamps.

  • Pool Chlorine Bromine Feeder Hose Tubing Kit
  • Includes Clamps Saddle Connectors and Tubing
  • Replacement Tubing Connection Kit For CL200
  • Aftermarket Replacement For CLX220PAK

User questions & answers

Question: Is the blue ring insulation tape
Answer: The blue ring is Teflon tape for the fittings.
Question: What size hole is needed to be drilled to use these
Answer: Don’t know. My hole was already drilled

R172064 Parts Kit for Rainbow Off-Line Chlorinator

Based on 6 reviews Check latest price

Product description

Parts bag kit for the Rainbow #300 Off-Line pool chlorinator, replacement part number R172064.

  • For the Rainbow #300 off-line chlorinator
  • Two tube fittings with nuts and gaskets
  • Two saddle clamps
  • One flow valve and one elbow valve
  • One small bottle of silicone lube

Hayward Off-Line Chlorinator

Product description

Off-Line Chlorinator, Hayward

  • Off-Line Chlorinator, Hayward.

GG) 300 Offline Chlorinator Feeder Tubing Hose 3/8" x 1/4" x 8` Part R172023 for Rainbow

(GG)

  • 300 Offline Chlorinator Feeder Tubing Hose 3/8" x 1/4" x 8` Part R172023 for Rainbow
  • For use with the automatic feeder models: 300, 302, 300-19, 300-29 Measurements: 3/8" o.d. x 1/4" i.d. x 8 ft. Black Poly Tubing Chlorinator Feeder Hose; Part: R172023

ProStar Replacement R172064 Kit for Rainbow Off-Line Chlorinator CH1075

Based on 1 reviews Check latest price

Product description

This new style parts bag is designed to use with Rainbow automatic chlorine/bromine pool and spa feeder models 300, 302, 300-19, 300-29.

  • Proudly made in the U.S.A.
  • High quality Replacement Parts Bag
  • This New Style Parts Bag Is Designed To Use With Rainbow Automatic Chlorine/Bromine Pool And Spa Feeder Models 300, 302, 300-19, 300-29
  • Fits Rainbow Automatic Chlorine/Bromine Pool And Spa Feeder Models 300, 302, 300-19, 300-29
  • Replacement for R172064

Hayward CLX220GA CL220 Off-Line Chemical Feeder Connection Pack with Saddle Clamp

Hayward

Based on 208 reviews Check latest price

Product description

Hayward CLX220GA CL220 Off-Line Chemical Feeder Connection Pack with Saddle Clamp

From the Manufacturer

Hayward Pool Products replacement hose kit for CL220 off line chemical feeder. Contains saddle tee, compression nut with washer, 4 foot chlorinator tubing, second compression nut to connect to feeder.

  • Made in United States
  • Package length : 10.5"
  • Package width : 13.5"
  • Package height :13.5"

User questions & answers

Question: What size diameter tubing is this
Answer: Wood
Question: how many clamps and small male adapter is in the kit
Answer: I gave the board as a present, but played using it with my Grandson. The checkers stack well as "Kings", and I think the board was about 15" x 15" or 16" x 16", a good size.
Question: Will this work for my check valve it’s 3/8 inch
Answer: Hi Brandon! The Tenacious Tape Patch Kit is a high strength adhesive that works perfectly and grips on nylon, netting, plastic, vinyl, and breathable fabrics with ease. If it can repair a raft or waders, I think it would work great on an air mattress. Robyn M. Orvis Customer Service
Question: does this clamp fit 2 inch pipe
Answer: That would entirely depend on the fabric the coat is made out of. It is not likely that these would work.

Hayward CL200 In-line Automatic Chemical Feeder

Hayward

Based on 1 reviews Check latest price

Product description

Hayward CL200 In-line Automatic Chemical Feeder

From the Manufacturer

Hayward CL200 Automatic Chemical Feeder with Mounting Base. Efficient and maintenance-free, these durable, corrosion-proof automatic chlorinators and brominators are ideal for Newer existing pools or spas and work automatically with your pump and filter system.

  • Uses large or small, slow dissolving tablets
  • Dial control valve allows for easy feed rate adjustment
  • Easy-Lok threaded cover for safe and convenient access to add tablets
  • Unique finger-release catch provides extra security
  • Durable ABS body and high quality Viton seal for extended life

User questions & answers

Question: can you use pellets instead of the tablets with this system
Answer: I was told never use nonstabilized chlorine tablets in the chlorinator. I did. And it got all thick and frothy, plugged it up and ruined it.
Question: I am having trouble with the numbers on my amazon gift card! help
Answer: Mail it to me, I will use it for you.
Question: Inlet/Outlet diameters
Answer: The inlet and outlets are both 1 1/2" threaded hubs. It takes about 15 minutes to install.
Question: Does this come with "O" rings
Answer: Yes, it comes with the one O ring for the screw-on cap. This unit has performed very well for me. Stick with Hayward instead of the off-brand units and you will be much happier.

Product features

About Us

Our objective is to make your pool experience worry and hassle-free. That's why our equipment is engineered to work smart at keeping your pool sparkling clean and trouble free.

For over 80-years, we've been helping pool owners enjoy the pleasures of pool ownership by manufacturing cutting edge, technologically advanced pool equipment worldwide.

Our products include a complete line of technologically advanced pumps, filters, heaters, heat pumps, automatic pool cleaners, lighting, controls and salt chlorine generators-high-quality components engineered to work together.

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