Offline Hayward Chlorinator - CL220



Part # CL220

By Hayward Pool Products

  5 Average  



Part # CL220

Warranty 1 year warranty

Product Description

Looking to reduce the time spent on pool maintenance? Tired of that unsightly chlorine dispenser floating in the pool? The CL220 Offline Chlorinator automatically feeds chlorine to your inground pool, working with your existing pump and filter system.  Offline installation is a convenient option when replumbing or renovation is not desired. Chlorinator tubing is attached directly to the existing pipe and the returning water flows through the tubing into the chlorinator and back into the pool.  Features a simple dial valve which allows you to adjust the chlorine feed rate.   Tough ABS thermoplastic body with a long-lasting Viton seal for the lid.  Holds 9 lbs of Trichlor tablets or sticks.

Hayward Chlorinator CL220 Features:

  • Holds large or small slow dissolve tablets or sticks
  • Dial valve has 9 settings allowing you to control the amount of chlorine
  • Easy-Lok™ threaded cover makes it safer and easier to add chlorine
  • Unique finger-release catch on cover for extra security
  • Includes tubing and clamps for offline installation
  • Simple DIY installation for the handyperson


  • Chemical Capacity: 9 lbs.
  • Dimensions: (W) 8-1/4 in. x (H) 15-1/2 in.
  • Weight: 6 lbs.

Hayward Chlorinator CL220 Flow Ratings: (GPM = Gallons Per Minute)
CL100 - Used with pumps with flow rating of 30-50 GPM
CL200 - Used with pumps with flow rating of 50-80 GPM
CL2002S - Used with pumps with flow rating of 50-90 GPM
CL110 - Used with pumps with flow rating of 30-50 GPM
CL220 - Used with pumps with flow rating of 50-90 GPM

Hayward Chlorinator CL220 Miscellaneous Notes

Note: Chemical feeders should always be installed after a pool heater.

CAUTION: Extreme care must be exercised when adding chemicals to your pool. Concentrated chemicals may react violently if they mix in the chemical feeder, causing a fire or explosion, which may result in PROPERTY DAMAGE, PERSONAL INJURY or DEATH.

CAUTION: Never use any petroleum based lubricants on the 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 or Ivory bar soap.

Click here for more Hayward Chlorinator


?     Asked on 8/4/2016 by

is the top of the Hayward supposed to allow the inner ring to float freely, and not be tight inside the top? We can't get it to the spot, where the top locks in place, at that insert spot? We can't get it to lock.

A     Answered on 8/5/2016 by Scott W.

The o-ring should not be loose in the lid, it should be set in the lid to allow the lid to tighten and seal so it doesn't leak.

?     Asked on 7/27/2016 by andrew

how can you tell if the chlorinator is working properly? CL 220. FAC is low and im starting to question the function of the chlorinator.

A     Answered on 7/30/2016 by Lennox H.

Hi Andrew, You can confirm based on the amount of chlorine that is released into the pool. If your chlorine level is low and the chlorinator is filled then you  ca clean it out by pouring hot water down the chlorinator. If that does not work you will have to replace the control valve.

?     Asked on 7/19/2016 by Ed

Your specifications say CL 220 chlorinator weighs 46 lbs.!! My current one probably weighs 5-6 lbs. Why the discrepancy? I don't want a very heavy chlorinator. Thanks.

A     Answered on 7/19/2016 by Alan M.

The 46lbs is a typo. The weight of this chlorinator is approx 5-6 lbs.

?     Asked on 6/14/2016 by tom murray

having trouble with leaking at top of the chlorinator have to tighten so tight, it is hard to remove model #CL220

A     Answered on 6/14/2016 by Alan M.

Here is the parts list for the 200 Inline and Offline Series Chlorinators.You will need to replace the seals with the Hayward CL200 Tune Up Kit. This will stop your leaking problem.

?     Asked on 6/13/2016 by Eric Rittenhouse

New Hayward cl220 only works when set on full (10)! Never had this issue with old unit. will only fill with water set on full. any ideas what is up?

A     Answered on 6/21/2016 by Lennox H.

Hi Eric, The dial on the unit could be bad. You can contact Hayward to troubleshoot.

?     Asked on 6/1/2016 by Linda


A     Answered on 6/8/2016 by Lennox H.

Hi Linda, The Rainbow HC-3315 Chlorine/Bromine Feeder will work as a replacement, you will have to replumb it.

?     Asked on 3/6/2016 by

Does this price include all the fittings required for installation?

A     Answered on 3/7/2016 by Lennox H.

Hi, All the fittings required for installation is included with this unit.

?     Asked on 10/3/2015 by Pam

Do you sell just a replacement lid for hayward chlorine feeder my lid has cracked?

A     Answered on 10/6/2015 by Robert M.

Hello Pam - Part number CLX200CA is the complete lid for the CL220.

?     Asked on 8/13/2015 by ban

Can a off line chlorinator be installed only in return line ? if not why not ? what can go wrong ?

A     Answered on 8/14/2015 by Joe S.

For any chlorinator it is best to install on the return after all the equipment. If you install before the equipment you will be running heavy amounts of chlorine into pumps and filters which will cause damage

?     Asked on 7/15/2015 by Jim Taylor

Does the inline chlorinator come with all the hoses and clamps necessary for installation. or must I purchase an additional kit?

A     Answered on 7/15/2015 by Hector F.

The CL220 offline chlorinator does come with all parts needed for installation.

?     Asked on 10/25/2014 by Joy Williamson

The chlorinator lid is so tight I cannot budge it -- I'm fairly strong but it's really tight. The pool guy said I was to have a tool to remove that lid -- never saw one before so guess not have. He tried to twist it off and said he was afraid he'd break it if he put more pressure on it. Tried to untwist the cap myself, but don't think it moved much --- now chlorine vapors nearly knock me down in the pump house while pump is on! What to do?

A     Answered on 10/27/2014 by Robert M.

Hello Joy - This is a common issue with the Hayward CL220. I would recommend replacing the CL220 with the Rainbow 300. You will not have an issue with the Rainbow lid.

?     Asked on 9/27/2012 by Guest

Does the CL220 come with the hose, clamp and whatever else is needed to install it?

A     Answered on 9/27/2012 by Patrick P.

The CL220 Offline Chlorinator does include tubing and clamps.  Please see the owner's manual for a complete parts list.

?     Asked on 8/6/2012 by Guest

I have a really hard time taking the cap off my chlorinator. Is there a wrench that I can buy?

A     Answered on 8/6/2012 by Patrick P.

If you are having difficulty removing the lid on your Hayward CL200 or CL220, you can the Dura Grip Lid Wrench: It fits securely on the lid, making removal a breeze.  

?     Asked on 1/30/2012 by Guest

What is the difference between an inline and offline chlorinator?

A     Answered on 1/30/2012 by Patrick P.

An inline chlorinator would be plumbed directly inline with the plumbing.  For an existing pool, this would mean a section of pipe would need to be cut out to install the chlorinator.  An offline chlorinator attaches to existing plumbing by chlorinator tubing (holes would be drilled into existing pipe to attach the tubing.)

?     Asked on 11/21/2007 by Guest

How do I know if one chlorinator is enough for my pool?

A     Answered on 11/21/2007 by Patrick P.

The Hayward CL200 or CL220 chlorinator will provide enough chlorine for up to 40,000 gallons of water.  You would need to calculate the volume of your pool to determine how many chlorinators you would need.  For example, if you have 60,000 gallons then you would use two CL200 or CL220 chlorinators.

?     Asked on 3/10/2007 by Guest

Is there a feedback mechanism that tells the unit the chlorine balance in the pool? Is this a way for me to automate addition of clorine to keep it always at the correct level? Or, just another place to put the tab aside from the the drain basket?

A     Answered on 3/10/2007 by Patrick P.

There is a dial on this unit which has a setting from 1-10 If you set the dial on 1 it will be letting the least amount of chlorine to the pool and if you have it set at 10 this would send the most amount of chlorine to the pool. So you can automate the feed of chlorine to the pool but you will still need to manually test your water. We do not recommend placing tablets in the skimmer basket because this high concentration of chlorine goes directly back to your pump and can cause corrosion to your pool equipment. If you do not go with the automatic chlorinator we would recommend at least going with one of our floating chlorinators so you do not damage your equipment you may view our floating chlorinators here 

?     Asked on 7/13/2006 by Guest

Can I use granular, or must I use 3" tablets or stick?

A     Answered on 7/13/2006 by Patrick P.

We recommend using tablets or sticks, and not to use granular with chlorinators.


Review Summary

  (Average 5 out of 5 stars)
12 Rating
5 star:
4 star:
3 star:
2 star:
1 star:

The Most Helpful Review

4 of 4 people found the following review helpful:

 (5 out of 5 stars)  Excellent

from Angola, IN ()

Pros: Good reponsiveness

Cons: none

Received in 3 days. Originally ordered the wrong unit, called Customer Service and new unit ordered, RMA provided, and service was excellent.

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The Most Recent Reviews

2 of 2 people found the following review helpful:

 (5 out of 5 stars)  Great clorinator


Keeps my pool clear.Great clorinator and would recommend anyone with a pool to get one of these.

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2 of 2 people found the following review helpful:

 (5 out of 5 stars)  Great Product

from Ravena, NY ()

Pros: easy installation

very easy to install, about 15 minutes, works great

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2 of 2 people found the following review helpful:

 (5 out of 5 stars)  

from Harpers Ferry, WV ()

This product was cheaper than buying from our pool supply store, had all the pieces necessary to hook it back up, and was exactly like the one we had. I was also impressed with the was shipped immediately and was here in 2 days.

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3 of 3 people found the following review helpful:

 (5 out of 5 stars)  Easy as slicing pie


Cons: None

Great chlorinator unit to install off-line for your pool quick easy installation good control for chemical balance in pool. Holds about nine large tablets or quite a few of the small.

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1 of 1 person found the following review helpful:

 (5 out of 5 stars)  

from New Jersey ()

Easy to install

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2 of 2 people found the following review helpful:

 (5 out of 5 stars)  Chlorinator

from Somerville, NJ ()

Pros: Works great

This was a replacemnent of one used for 7 years. Work great. Lighter than the original, but apparently as strong.

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2 of 2 people found the following review helpful:

 (5 out of 5 stars)  Easy Installation

from Seaford, VA ()

Hayward chlorinator is easy to install and works great. Comes with correct hardware to complete the job. INYO also provided soft copy of instructions.

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