Home CaliMar® Replacement Cell for Hayward T-CELL-15 | 3-Year Warranty | 40,000 Gallons | CMARCHA40-3Y

CaliMar® Replacement Cell for Hayward T-CELL-15 | 3-Year Warranty | 40,000 Gallons | CMARCHA40-3Y


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  • Direct replacement for Hayward T-CELL-15 cell, exact measurements and cord connection
  • Three-year warranty, (2-years full, 3rd year prorated 60%)
  • 15-foot cord included
  • Meant for pools up to 40,000 gallons in volume
  • CMARCHA15-3Y replaces T-CELL-3
    CMARCHA25-3Y replaces T-CELL-9
    CMARCHA40-3Y replaces T-CELL-15

The CaliMar® CMARCHA40-3Y salt cell is a generic replacement for the Hayward T-CELL-15, meant for use in Hayward Goldline AquaRite, Aqua Logic and Pro Logic salt systems. CaliMar® replacement cells are proven to provide reliable performance after being tested under rigorous conditions. We are proud to offer these products to our customers as a more economical alternative to OEM (original equipment manufacturer) models and other generics.
The CMARCHA40-3Y is a plug-and-play unit, meaning it fits perfectly with existing Hayward equipment, replacing the T-CELL-15 seamlessly with no additional installation or plumbing required. It is designed to chlorinate pools up to 45,000 gallons in volume. It comes with a 15-foot cord, providing flexibility in connecting to your existing power center.
We provide free two-day shipping on this cell, as well as a three-year warranty. We also offer complete CaliMar® salt systems which include a power center and cell.

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Q & A
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Browse 10 questions Browse 10 questions and 72 answers
Why did you choose this?
Pool Supply Unlimited Store
I bought a previous one from your store and it lasted 2 and 1/2 years. Your price is competitive and I have a history with you.
Robert B on Apr 22, 2018
LaRena G on Mar 3, 2018
I bought a previous one from your store and it lasted 2 and 1/2 years. Your price is competitive and I have a history with you.
Robert B on Apr 22, 2018
Warranty, price and average reviews.
Jack on Mar 17, 2018
LaRena G on Mar 3, 2018
Price and also because I have an older 1.4 rev software
Stuart H on Dec 19, 2017
3 year warranty and price point
Nicholas P on Nov 25, 2017
Price and warranty
Cecil L on Nov 14, 2017
3 yr Warrantee and Price
Regina B on Sep 27, 2017
This is the first time I am ordering this product. I usually order the Hayward but I see calimar now has a 3 year warranty so I'm giving it a try due to the cheaper price. Wish me luck.
Angela M on Sep 13, 2017
Price and reviews
Frank C G on Sep 7, 2017
Scott M on Aug 21, 2017
Based on reviews
Stephanie R on Aug 9, 2017
Better warranty (3-year) than other, less-expensive replacement parts.
Keith S on Jul 23, 2017
Positive reviews from customers
Terry F on Jul 20, 2017
Exact replacement for older units made before 2009
Robert A on Jul 17, 2017
price and reviews
Randall C on Jul 17, 2017
price and availability
John J on Jul 14, 2017
Quick and simple ordering and shipping in a timely manner. Two days is what I was looking for. Thank You
Peter G on Jul 13, 2017
price and warranty
Tyler B on Jun 28, 2017
Steve M on Jun 23, 2017
recommended by staff
Thomas L on Jun 20, 2017
Ted Z on Jun 9, 2017
OEM Replacement
Mark M on Jun 9, 2017
Price is good
Joseph S on Jun 2, 2017
martin g on Jun 1, 2017
needed cell
Vicky W on May 31, 2017
price and quick shipping
Mike D on May 30, 2017
I chose this strictly based on price. I'm rolling the dice and hoping the quality of this item is a good "replacement" for the much higher-priced original equipment from Hayward.
David B on May 29, 2017
good price same function
mike h on May 29, 2017
need to replace same
Tony z on May 18, 2017
After reading reviews of this product, I felt comfortable making this purchase. After all, it has same function as the Hayward T-Cell 15. Has about same life expectancy (3-4 yrs)
Edward A L on May 13, 2017
ROBERT K on May 13, 2017
good reviews
Donald M on May 12, 2017
same warranty for cheaper price
Luis S on May 5, 2017
Martin G on Apr 28, 2017
Haywood salt cell cost too much compared to CaliMar cell and also has a 3 year warranty
Charles W on Apr 21, 2017
Good Reviews and Good Price
Paul M on Apr 21, 2017
Because of the comments and it was cheaper than an original replacement.
Steven C on Apr 17, 2017
Price, warranty, reviews
michael c on Apr 16, 2017
Reviews and price
Fred F on Apr 15, 2017
The price and warranty were right
William L. O on Apr 8, 2017
The price, 3 year warranty, and reviews
karen o on Apr 7, 2017
price and warranty
Gary B on Mar 18, 2017
Fair price and good reviews.
Paula W on Mar 7, 2017
I was looking for a replacement cell for my Aquarite T-15 Cell and after seeing the reviews for this product I decided to purchase it.
Jefferson M on Dec 30, 2016
quality and price
Melissa L on Dec 29, 2016
Price, warranty and comments by users make this look like the best bet to replace my Goldline T-Cell-15.
Steven C on Dec 5, 2016
we needed a replacement
Doreen G on Nov 27, 2016
The OEM is $100 more. I thought I would try a new product
Steve N on Nov 11, 2016
recommendation of sales rep.
Joseph D on Oct 25, 2016
we need a replacement
Raymond A R on Oct 25, 2016
Warranty, price and average reviews.
Jack on Mar 17, 2018
Price and also because I have an older 1.4 rev software
Stuart H on Dec 19, 2017
What is difference between Aguarite T-Cell-15 $463.47 & Calimar T-cell-15 $329?
A shopper on Oct 23, 2015
BEST ANSWER: I cannot give the technical differences. Used the HC-40G-3Y to replace the generator cell that came with the Goldline Aquarite Electronic Chlorine Generator for my 40000 gallon concrete pool. The replacement cell fit perfectly in the waterline and the electronic plug did also at the control box. There was no problem ever with the interface with the control box; it worked smoothly from the get-go to the present. Put in service May 1, 2015 and operates 10-12 hours per day, every day. So practically, it is identical.
Which direction does this get installed?
Cooky on Jul 3, 2016
BEST ANSWER: There should be an arrow on the body of the generator that points to the direction of water flow through the device. That is the arrow should point in the direction the water flows through the generator.
In Which direction should the cell be installed?
Cooky on Jun 29, 2016
BEST ANSWER: I went out to check mine expecting to see a direction arrow on the cell. I don't see one. Looking through the user manual the only direction specified is for the separate flow switch. The cell does not appear to be flow-direction dependent. Having said that, mine flows from left to right in the direction of the label text. It is installed in the pipe that leaves the bottom of the filter (output).
Aqua Rite claims the software of the Cali Mar will result in incorrect readings as it does not match up to their product. is this correct?
bill t on Dec 17, 2015
BEST ANSWER: Hello Bill. I cannot answer your question with 100% certitude. I have never trusted entirely the meter readings on the control box, even when using all Aqua-Rite gear. My pool guy (guru) suggested this path.. Salt readings are pretty accurate and I check once a month with a test kit. Temperature reading is accurate also and, after all that is a curiosity issue anyway; our bodies tell us if the water is cold or hot or like goldilocks, just right. If you have pool heaters, their thermostat will rule the day independent of the control box readings. As to the other chemical readings and ratios, I pay no attention to them. Take a water sample to a good pool supplies store and have it tested once a month and cross check with the water test strips that test for the several important ratios. There are also solution-based water tests for these ratios. I had to use that for Total Alkalinity testing when even the pool store test showed unreasonable levels.

With almost a whole summer of use, my CaliMar replacement cell has worked well and we have had several very heavy rainfalls and dry spells where the well water used to fill the pool is of very high Ph' leading to chemical changes that require remediation. Hope this helps.
A shopper on May 25, 2016
BEST ANSWER: They usually ship ground and it takes up to 4 business days to receive.
Does this cell require 1.5 firmware on the Aqua Rite?
Wayne N on May 24, 2017
BEST ANSWER: The T-Cell-15 works on all firmware.
How can I tell which software mine has?
Andrew I on Jul 30, 2016
BEST ANSWER: You will have to hit the Diagnostic button 7 times until the revision is shown. It will say R.1.**. If it is R.1.55 or higher, you can you any cell. If it is lower, you can only use the T-15-Cell and T-15 generic replacements.
is the warranty through you or the manufacture. who would i contact if it had any problems?
A shopper on Jul 18, 2016
How do I get Free 2 day shipping?
A shopper on Feb 6, 2016
BEST ANSWER: I was very happy with the shipping
4.8 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Do yourself a favor, Order this product and save money
My salt system was installed back in 2010, and the generator just stop working.My local pool store was very expensive, so I went online to shop.I bought this Calimar replacement celland couldn't believe the price.Complete information was on the page about it, also proper online documentation,price was excellent.I'm very pleased.
July 10, 2016
CaliMar Replacement Cell
I've had a Hayward salt system in my pool from day one. For the past 4 years the Hayward cells were only lasting about 1 year before giving out. The 1st cell would be covered by warranty but a year later I was buying another as the warranty didn't extend to the replacement. The CaliMar has worked fantastic from day 1 and is considerably more cost effective.
Make sure to disconnect the unit when you add salt to the pool to extend it's like. Thought that might have contributed to the first cells failure, but now think Hayward cut corners somewhere.
August 19, 2016
over 2 years ago
Great Service
This was painless and when they sent me the confirming email they double my purchase which pointed out I had selected the wrong size cell from the options. They processed the credit and got me the right part.
Installed and working great. Also appreciate the 3 year warranty!
September 7, 2016
1 year ago
I loved the pool salt cell. Easy to install and started working immediately! My family can now enjoy a crystal clear blue pool again! I would definitely recommend it.
September 16, 2016
1 year ago
Perfect Replacement
Had my Hayward system since '09, my pool service guy recommended I looked for a replacement t-cell-15 online. Saved myself $150, cell works perfect on my system, I have no complaints.
August 7, 2015
T-cell replacement
I would definitely recommend this product as it does what it's supposed to do. However the socket where the cord enters has deteriorated. I'm anticipating a leak where the cord goes in at any time rendering this thing useless. Other than that it make chlorine everyday. Hope this helps...
August 23, 2016
over 2 years ago
Happy customer!
I have been doing business with "Pool Supply" for last couple of years and I am very happy for all that counts: surfing on their web to find the product, ordering, receiving and if there is a problem...perfect help by them!
April 1, 2018
1 month ago
Works Great!
Works Great,

I went from 55 %, on my old unit down to 15% to keep my chlorine levels proper.
It is much more efficient and fit perfect!
and pricing is good!
February 5, 2018
7 months ago
Awesome awesome awesome awesome awesome awesome awesome
August 19, 2016
over 2 years ago
I have had it for some time and I am very pleased so far. Lets see if it makes it more than 2 years
August 24, 2016
over 2 years ago
  • CaliMar Titanium Edition Salt Chlorine Generator Systems: 7 Year Warranty
  • CaliMar Platinum Series Salt Chlorine Generator Systems: 5 Year Warranty
  • CaliMar Goblin Robotic Pool Cleaner: 4 Year Limited Warranty
  • CaliMar Variable Speed Pumps: 1 Year Limited Warranty
  • CaliMar Above Ground Pools: 8 Year Full + 22 Year Pro-Rated Warranty
  • CaliMar Above Ground Pool Filter Systems: 3 Year Limited Full Warranty
See warranty documents for more information.

 Adobe Acrobat PDF CaliMar Above Ground Pool Warranty
 Adobe Acrobat PDF CaliMar Filter System Warranty
 Adobe Acrobat PDF CaliMar Goblin Pool Cleaner Warranty
 Adobe Acrobat PDF CaliMar Platinum Series Warranty
 Adobe Acrobat PDF CaliMar Titanium Edition Warranty
 Adobe Acrobat PDF CaliMar Variable Speed Pump Warranty
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Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in Southern California and can land most products to your door (within the 48 contiguous states) in less than a week.
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