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Is Pentair FNS Plus or Jandy DEV D.E. Filter Better?

By: Holly Jender on November 5th, 2018

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Is Pentair FNS Plus or Jandy DEV D.E. Filter Better?

Swimming Pool Accessories  |  Options and Accessories  |  Pool Maintenance

Pentair and Jandy logos

Why are there so many brands of pool equipment? And don't even get me started on all their products. It can feel overwhelming, especially if you're new to the pool scene.

We're here for you.

Here at River Pools, we don't stop at just manufacturing and installing fiberglass pools. We're enthusiastic about educating consumers just like you in order to make your pool life easier.

Welcome to our comparison of Pentair vs. Jandy filters, Part 3!

Side note: Jandy is owned by Zodiac, so as you're looking into these pool filters yourself, you might see either Jandy or Zodiac as the manufacturer.

 

What are the Different Kinds of Pool Filters?

The 3 types of pool filters are cartridge, sand, and D.E. filters.

A quick summary:

  • Cartridge filters: Pleated polyester filters catch dirt and debris that's 10–20 microns and bigger.
  • Sand filters: The dirty pool water filters through the sand in the tank. The sand catches dirt and debris that's 20 microns and bigger.
  • Diatomaceous Earth (D.E.) filters: A set of grids/fingers are coated with crushed seashells and fossilized diatoms, and they catch dirt and debris that's 5 microns and bigger.

 

Are Jandy or Pentair Pool Filters Better?

In this 3-part series, we're comparing 3 pairs of Pentair and Jandy pool filters.

  • Cartridge filters: Pentair's Clean & Clear Plus vs Jandy's CV cartridge filter
  • Sand filters: Pentair's Sand Dollar vs Jandy's JS Side Mount Sand Filter
  • D.E. filters: Pentair's FNS Plus vs Jandy's DEV D.E. filter

In Part 1, we discussed their cartridge filters.

In Part 2, we discussed their sand filters.

Today, let's talk D.E. filters!

 

Pentair FNS Plus D.E. Filter

Pentair FNS Plus D.E. filter works for pools with 23,040 to 86,400 gallons of water, depending on the model.

FNS Plus D.E. filter FNS Plus D.E. filter dimensions FNS Plus D.E. filter specs

Filtration area options: 24, 36, 48, and 60 sq. ft.

Reminder: This refers to the surface area of the filter media—in this case, the layered grids covered in D.E. powder, which do the actual filtering. For more details, check out What Does a Pool Filter's Filtration Area Mean?

Maximum flow: 48, 72, 96, and 120 gpm

Maximum working pressure: 50 psi

Plumbing size: 2"

Diameter: 21½"

Height: 37", 43", 49", and 55" tall

Weight: not specified.

D.E. requirements: 2.4, 3.6, 4.8, and 6.0 lb.

Drain size: 1½"

Cost: $495 (24 sq. ft.) to $825 (60 sq. ft.)

Warranty: On the Warranties page, Pentair warrants their products to be free from defects in material and/or workmanship for a period of sixty (60) days (parts only) from the original date of purchase and/or installation. They also warrant their filters specifically for 1 year. Plus, some preferred dealers (like us!) get a 3-year warranty if they use 3 Pentair components on a single pool.

This filter has a "Service-Ease™ Grid Pack," although Pentair doesn't specify exactly what that is—only that it lets you replace grids one at a time.

It catches debris as small as 5 microns.

It has top-to-bottom backwash.

The filter includes a high-flow manual air relief valve.

It has a corrosion-resistant fiberglass tank.

Average online rating: 3.7 out of 5 (multiple people had issues with the tank cracking)

 

Jandy DEV D.E. Filter

Jandy DEV D.E. filter works for pools with 34,560 to 57,600 (or more) gallons of water.

Note: Amazon lists this filter as Zodiac DEV48/DEV60 Jandy DEV Diatomaceous Earth Versa Plumb Filter.

DEV D.E. filterDEV D.E. filter specsDEV60_de_filter_dimensions

Filtration area options: 48 and 60 sq. ft.

Reminder: This refers to the surface area of the filter media—in this case, the layered grids covered in D.E. powder, which do the actual filtering.

Maximum flow: 96 and 120 gpm

Maximum working pressure: 50 psi

Plumbing size: 2"

Diameter: 25"

Height: 41" and 47" tall

Weight: 95 and 101 lb.

Drain size: 2"

Cost: $669 (48 sq. ft.) to $854 (60 sq. ft.)

Warranty: Jandy warrants that the DEV D.E. filter will be free of manufacturing and workmanship defects for a year.

A note from the pro!

If you're doing your own research, be aware that Jandy isn't great about showing you the warranty upfront. It usually takes a little digging.

They don't provide any warranty info on the product page, product manual, or site menu.

The link to Warranty Information is about halfway down the Jandy homepage, and it's all generic information, not specific to this product.

There are 3 backwash valve options available.

It includes a clean/dirty indicator on the pressure gauge.

Its heavy-duty, durable composite body is made of corrosion- and UV-resistant materials.

It traps debris as small as 5 microns. (Good job, Jandy, for actually giving a number!)

Average online rating: 4.1 out of 5

 

Summary: Pentair vs. Jandy D.E. Filters

Both D.E. filters catch debris down to 5 microns, have a 1-year warranty, and use curved grids for the filter media. There isn't much difference in terms of cost for similar sizes.

Pentair's FNS Plus offers more size options. It's slimmer but taller than Jandy's DEV. It has a lower online rating, with multiple customers reporting issues with the tank cracking. Pentair doesn't specify the filter's whole weight or the grid pack they tout on the product page.

Jandy's DEV offers 3 backwash options (compared to Pentair's single option). It has a larger drain, includes a convenient clean/dirty indicator, and has higher online ratings from customers.

Advantage: Jandy DEV

 

Ready to learn more?

River Pools manufactures and installs fiberglass pools in Virginia and Maryland. We also operate across the country through our nationwide dealers.

You can keep learning about all aspects of buying an owning an inground pool—check out our short videos on our YouTube channel and our Ultimate Guide to Inground Swimming Pool Maintenance.

If you're interested in a fiberglass pool, get in touch with us! We'd love to talk with you.

Previous: Is Pentair Sand Dollar or Jandy JS Side Mount Sand Filter Better?

Next: What Does a Pool Filter's Filtration Area Mean?

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