Hayward Swimclear Cartridge Filter 425 Sq Ft. - C4030



Part # C4030

By Hayward Pool Products

  4.75 Average  



Part # C4030

Alternate Part #'s HAY-05-357, HAY-05-361, HAYC4030

Product Description

Utilizing a cluster of four reusable cartridge elements, Hayward Swimclear cartridge filter offers a choice of 225, 325, 425 or 525 square feet of heavy-duty dirt-holding capacity for extra-long filter cycles, up to an entire season without cleaning. With filter tanks constructed of improved PermaGlass XL™ material, SwimClear filters will provide years of trouble-free operation and crystal clear, sparkling water.


  • In-ground pools
  • In-ground pool/spa combinations
  • In-ground spas (residential or commercial)


  • Patent pending Innovative Automatic Air Relief Valve provides peace of mind when it automatically purges any entrapped air during filter operation
  • Self-Aligned tank top and bottom make access to serving the Quad-ClusterTM cartridge elements fast and simple
  • Quad-ClusterTM of high-quality polyester cartridge elements provide 225, 325, 425 or 525 square feet of filter area for extra dirt-holding capacity and long, long filter cycles
  • Union coupling connection accepts 2" or 2 1/2" piping for plumbing versatility
  • New, stronger PermaGlass XLTM filter tanks made from extra durable glass reinforced copolymer
  • Heavy-duty, tamper-proof, one-piece clamp securely fastens tank top and bottom. Allows quick access to all internal components without disturbing piping or connections
  • Non-corrosive top closure plate prevents elements from lifting and allowing unfiltered water to by-pass into pool or spa during operation
  • 2" full-flow internal piping and plumbing for less resistance to flow and maximum performance.
  • Full size 1 1/2" integral drain allows for fast, 100% clean-out and easier flushing of tank

Click here for more Hayward Filters

Product Specifications

Port Size:
2" or 2 1/2 in.
Flow Rating:
150 GPM
Filtration Area:
425 sq. ft.
Turnover 8 Hrs.:
72000 gal.
Turnover 10 Hrs.:
90000 gal.

?     Asked on 7/6/2019 by

My Jandy pool cartridge filter is leaking even after replacing O ring so I assume it’s cracked. Pool size is 12500 gallons. I have a intelliflo vs 3050 pump. What is a good filter replacement?

A  Answered on 7/6/2019 by InyoPools Product Specialist Lennox H.

Hi. Filters are sized based on the flow rate of the pump. This C4030 - 425 sqft cartridge filter will be sufficient. 

?     Asked on 5/16/2019 by Lloyd

I need to replace my 25 year old sand filter for my 25,000g pool. I want to go with the C4030, will my 2hp single speed motor be comparable with this filter?

A  Answered on 5/17/2019 by InyoPools Product Specialist Lennox H.

Hi, Lloyd. It can as long as the flow rate does not exceed 150 GPM. 

?     Asked on 7/24/2018 by Frank Seaman

Hi, I currently own a 15 year old Hayward cartridge filter (model-4020). Looking at your site, I'm considering purchasing either the Hayward cartridge filter C-4030 or the C-5030. Will either unit match my inlet and discharge ports with out changing existing plumbing configuration? Many Thanks Frank

A  Answered on 7/24/2018 by InyoPools Product Specialist Lennox H.

Hi, Frank. Yes, either model will match the plumbing height of the older C4020 model. 

?     Asked on 6/19/2018 by Christine

I need the 4 Filter replacement cartridges for the Hayward C4030. What is the cost on these and can I get them through you?

A  Answered on 6/19/2018 by InyoPools Product Specialist Hector F.

Yes, we do carry these. You can get the original Hayward ones that you can view by clicking here or our Pureline generic versions that you can view by clicking here

?     Asked on 6/16/2018 by Mike

We have an older 15-18k gallon in-ground plaster pool. One skimmer, 2 discharge outlets, plumbing all 1 1/2 “. New 240v 1hp pump and fairly new sand filter setup. Looking to upgrade to a cartridge setup for better filtration quality. Will my existing plumbing and pump be adequate with the c4030? Or will I have to upgrade my pump and plumbing?

A  Answered on 6/23/2018 by InyoPools Product Specialist Lennox H.

Hi, Mike. This filter will be sufficient with your existing setup. You will have to use a pvc adapter to either downsize or increase the plumbing to the unit. You will not have to upgrade your pump. 

?     Asked on 6/14/2018 by Jesus Garcia

I currently have a Hayward SwimClear C4020 filter for an in-ground pool that needs replacement. It is about 15 years old. Does Hayward still manufacture the C4020? Do you stock it?

A  Answered on 6/14/2018 by InyoPools Product Specialist Andy O.

Hello Jesus- The Hayward C4020 has been replaced by the Hayward Swimclear Cartridge Filter 425 Sq Ft. - C4030.

?     Asked on 5/31/2018 by Kirk

Do I need any other parts to get going.

A  Answered on 5/31/2018 by InyoPools Product Specialist Patrick P.

Hi Kirk, Outside of some plumbing supplies look glue and pipe fittings, this would be everything you need. The cartridges are included with this filter as well as the unions for the plumbing connections.

?     Asked on 5/23/2018 by Marc

I have a EC75A and Super pump II, 1.5hp. Started last year DE blowing into pool. Replaced several parts including tube sheet, oring bump shaft, etc.. Still getting DE in pool this season. I'm not lookin to invest $400 into replacing tubes so I've considered Swim Clear. 3.5 deep shallow 8.5 deep end. Any remedies for my current DE problem or what size Swim Clear do you recommend?

A  Answered on 5/23/2018 by InyoPools Product Specialist Patrick P.

Hi Marc, I believe that the DE getting back into your pool is due to the fingers needing to be replaced and the $400 cost to replace the fingers on the EC75A is definitely the biggest downside to that filter. Really the only remedy on the DE issue would be to replace the fingers. I would suggest replacing the filter with a SwimClear Cartridge Filter and the 425 Sq. Ft. C4030 would be the size I suggest.

?     Asked on 5/14/2018 by North American Property Management

Does this cartridge filter require sand? If so how many 50 lbs bags? Thank you

A  Answered on 5/14/2018 by InyoPools Product Specialist Alex V.

Hello, The cartridge filter does not use any sand. Adding sand to a cartridge filter would cause severe damage to the filter and cartridges. 

?     Asked on 5/10/2018 by

I want to replace old Hayward EC 75 DE filter with a Hayward cartridge filter. I have a new 1-1/2 HP pump motor. The pool is 25000 gallons. What cartridge filter will be the correct one to buy?

A  Answered on 5/10/2018 by InyoPools Product Specialist Lennox H.

Hi. I would recommend a 200 sq. ft. or higher cartridge filter. This C4030 filter will be more than sufficient. 

?     Asked on 2/22/2018 by Richard

I have a Hayward c4000. The DEX2400j clamp is broken and replacements are not available. The c4030 is very similar. Will the clamp on the 4030 work on the 4000 as well? Thanks

A  Answered on 2/23/2018 by InyoPools Product Specialist Lennox H.

Hi, Richard. Unfortunately, the clamp from the C4030 will not fit the C4000. 

?     Asked on 9/4/2017 by Mike Stringer

It the Hayward filter housing model number c4030 a direct replacement to the old c4000 that I presently own (the old one has a large crack in it and I am trying to buy a direct replacement so I do not have to repipe the PVC.

A  Answered on 9/6/2017 by InyoPools Product Specialist Lennox H.

Hi, Mike. The Hayward C4030 Filter is a direct replacement for the Hayward C4000 filter. 

?     Asked on 7/28/2017 by Chris

have an old Hayward C4000BH 450 Series cartridge filter that is cracked and needs replaced. I've learned they have discontinued this model. I would like to maintain my existing piping and fittings and just replace the cartridge. Is the C4030 the correct replacement? If not, what is?

A  Answered on 7/29/2017 by InyoPools Product Specialist Lennox H.

Hi, Chris. The Swimclear Cartridge - 4030 will replace the old Hayward C4000BH.

?     Asked on 6/14/2017 by

pool is circulating fine but there is only five pounds of pressure on the gauge and water slowly comes out of relief valve when opened. could the valve be bad?

A  Answered on 6/15/2017 by InyoPools Product Specialist Patrick P.

The most common issue that causes this is a suction leak. The first thing I would suggest is to the following the steps listed in our Article on How to Correct Low Pressure in Your Pool Filter System.

?     Asked on 6/9/2017 by

I want to replace my 2002 vintage Hayward C4020 cartridge filter with a new Hayward C4030. Can I simply remove the old filter and replace it with the C4030 using the old plumbing kit? Also, when do the filters go on sale? While old and in need of several parts, failure of the C4020 is not imminent and I can wait.

A  Answered on 6/10/2017 by InyoPools Product Specialist Lennox H.

Hi. The port configurations are almost identical that not alterations are neccessary. However, the union on the C4020 are not compatible with the bulkheads on the C4030 so you will have remove those and use the one that comes with the C4030. We do not have a time frame of when this unit will go on sale.

?     Asked on 5/20/2017 by Paul

I am replacing my C-4000 hayward. Will the c4030 work just as well?

A  Answered on 5/20/2017 by InyoPools Product Specialist Lennox H.

Hi, Paul. The Swimclear Cartridge - 4030 will replace the C-4000 model.

?     Asked on 5/2/2017 by Rick

How do we determine what size Hayward Swimclear for our pool. Pool looks to be between 15,000 - 20,000 gal. Thanks

A  Answered on 5/2/2017 by InyoPools Product Specialist Scott W.

You can determine that by what the flow rate is. I can figure that out with the pump model and the distance from the pump to the skimmer to calculate the flow rate that will help me properly size your filter.

?     Asked on 1/22/2017 by Rick

I currently have a Hayward DE6020, would the C4030 be a good replacement for a 35,000 gallon pool or would the C5030 be the better choice?

A  Answered on 1/24/2017 by InyoPools Product Specialist Adam Y.

Rick, Either of filters will work there is a 100sq ft difference on the two. They Both will handle the same amount of flow and turnover time. In the filter world bigger is better but in this case both filters will work.

?     Asked on 11/27/2016 by Arthur

Hello, I have a 20 year old purex triton seahorse (FSH-400) circulating a 15,000 gallon pool that needs replacement. Is the Haywood C4030 a proper replacement? Do the connections lineup?

A  Answered on 11/28/2016 by InyoPools Product Specialist Andy O.

Hello Arthur- Unfortunately I don't have the dimensions or specifications for the Triton Seahorse, and the only dimensions we have for the Hayward Swimclear Cartridge Filter 425 Sq Ft. - C4030  which as a width of 24" and height of 40 1/2".

?     Asked on 8/22/2016 by David

I have a 10Year old Hayward C5520 Cartridge Filter system that has sprung a leak. I'm looking to replace it. Will this one work in its place or do I need the 525 sq ft one?

A  Answered on 8/23/2016 by InyoPools Product Specialist Scott W.

That would be fine going to the C4030, but just so you're aware, each one of those four cartridges will be 7 inches shorter than the C5520 cartridges. This will make so you have more maintain because you will be cleaning the cartridges more often.

?     Asked on 8/15/2016 by Blake

I currently have a Hayward C3000 filter that is leaking. My pool is 18X36 with roughly 30K gls of water. I was told that I should have the C4030 and that the inlet/outlet on the filter would match the piping perfectly. Can you verify that please? Thanks

A  Answered on 8/19/2016 by InyoPools Product Specialist Lennox H.

Hi Blake, The C4030 can be used as a replacement, however, can't confirm if the water ports on the C4030 will match up exactly to the C3000 model.

?     Asked on 7/16/2016 by Randy

Does this filter come with filters?

A  Answered on 7/16/2016 by InyoPools Product Specialist Lennox H.

Hi Randy, The cartridges are included with this unit.

?     Asked on 7/8/2016 by

I have a 13,300 gallon pool. I have a Hayward EcoStar SP3400VSP pump. I typically run our pump 2900 RPMs of 3 hours and 1200 RPMs for 5 hours, each evening. I need to replace my cartridge filter. Will the C4030 be a good choice for a replacement?

A  Answered on 7/13/2016 by InyoPools Product Specialist Lennox H.

Hi, The Hayward C4030 is a good replacement filter and will provide adequate filtration.

?     Asked on 7/1/2016 by

I have a 13,300 gallon saltwater pool. I need a new pool filter. I presently have a 700 square foot filter that Shasta Pools installed 11 years ago. I've been told that the Hayward Swimclear 425 square foot filter will work as a new replacement. Is this true?

A  Answered on 7/7/2016 by InyoPools Product Specialist Lennox H.

Hi, The Hayward SwimClear Filter C7030 is the correct replacement filter that I will recommend.

?     Asked on 6/27/2016 by dennis iler

trying to find replacement for that thing that holds the filters in place, has 4 cups that go into each hole of the filters

A  Answered on 6/29/2016 by InyoPools Product Specialist Alan M.

I believe you are looking for the MANIFOLD ASSY,TOP. You can click on the link to view the page and for current pricing information. Thanks for your question!

?     Asked on 4/11/2016 by Roy Murphy

I have a 425 Hayward Cartridge filter. What is the proper replacement cartridge for this unit?

A  Answered on 4/11/2016 by InyoPools Product Specialist Lennox H.

Hi Roy, The Hayward CX880XRE is the proper replacement cartridge for this unit.

?     Asked on 1/23/2016 by Leon

This does come with the cartridges correct?

A  Answered on 1/25/2016 by InyoPools Product Specialist Brian M.

Correct. The C4030 comes complete with 4 cartridges.

?     Asked on 10/4/2015 by frank

what hayward vari flo valve best matches a hayward c4030 cartridge filter

A  Answered on 10/5/2015 by InyoPools Product Specialist Joe S.

There is not a valve made for this unit

?     Asked on 5/11/2015 by Maylis

What cartridge filter do i need Pool 20000 gallons Pipes one and a half inch Old pool under a tree Pump close to return Thanks

A  Answered on 5/11/2015 by InyoPools Product Specialist Patrick P.

Hi Maylis, This filter would be more than adequate for your sized pool but by going with a larger filter like this you will have much more cleaning capacity meaning that you will clean the cartridges less. If you have 1-1/2" plumbing you would need reducer bushings as this filter has 2" connections. The reducer bushings can be found at any hardware store for less than a dollar.

?     Asked on 5/11/2015 by george gillo

What size filter do I need for a 30000 gallon 20 by 40 pool.

A  Answered on 5/11/2015 by InyoPools Product Specialist Lennox H.

George, This Hayward Swimclear Cartridge 425 Sq Ft Filter can handle a maximum flow rate of 150 GPM. So if your pump does not exceed that amount then this filter will be great for your size pool.

?     Asked on 9/19/2014 by Guest

How many gallon pool will this filter service.

A  Answered on 9/19/2014 by InyoPools Product Specialist Patrick P.

The C4030 can filter up to 90,000 gallons of water.

?     Asked on 6/20/2012 by Guest

What is the measurement from the ground to the center of the intake and discharge?

A  Answered on 6/20/2012 by InyoPools Product Specialist Patrick P.

The measurement from the ground to the center of the intake is 12.5" and 17.5" on the discharge. 

?     Asked on 5/17/2012 by Guest

I have a 16' x 32' inground pool. Shallow end is roughly 3.5 feet and deep end is 9 ft deep. 1) Would this be the right filter? 2) Does this use the Vari-Flo valve? 3) How much are replacement cartridges and how often do they need to be replaced?

A  Answered on 5/17/2012 by InyoPools Product Specialist Patrick P.

Yes this would be a great choice of filter for your sized pool. This particular filter does not use a backwash valve like the vari-flo valve, typically a backwash valve is used on a D.E filter or a sand filter and not on a cartridge filter. The generic replacement cartridges for this filter are roughly $50 each and 4 are required, 4 cartridges are included with the purchase of this filter. Typically the cartridges will last roughly 3 years before needing to be replaced.

?     Asked on 9/21/2006 by Guest

Does this come with the filter cartridge and gauges?

A  Answered on 9/21/2006 by InyoPools Product Specialist Patrick P.

This filter comes direct from the manufacturer and includes the cartridge and gauges.


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