In-Ground Cartridge Filters matchup
Waterway Crystal Water 425 sq ft Cartridge Filter vs Hayward SwimClear 425 sq ft Multi-Element Cartridge Filter
identical filter area, $539 apart — and the cheap one cracks
Tale of the tape — this fight hasn't been booked yet
No showdown has ruled between these two. What follows is the verified data, not a verdict.
Ringside notes
Same filter area, same construction, $539 apart. Waterway's Crystal Water 425 and Hayward's SwimClear 425 both run 425 square feet across four cartridges — Waterway's own parts list confirms four elements, in the same 325/425/525 sizes Hayward ships — and Waterway sells for about $1,280 against Hayward's $1,819. That is not a budget substitute undercutting a premium product; it is the same class of filter at a different price. The case for Hayward is evidence depth. Its base runs 187 owners on the 325 and a broader brand history behind it, and its dealer channel offers a multi-year term that Waterway does not publish at all. The case for Waterway is the $539, and a base that is clean if shallow: 4.4★ across 34, with no free-product reviews among the ones we could read. Two honest catches. Waterway's 34 ratings is real evidence but less of it, and the brand publishes no warranty term on the listing, so you are buying without one stated. And Hayward's 425 does not have the base it appears to — its 4.5★/244 is POOLED with the 525, the same rating and the same count on two sizes $430 apart, so that number describes the pair rather than this filter. Read the 325's 4.6★/187 if you want a Hayward figure that describes one size. ⚠️ UPDATED 2026-08-26: we since read both filters' critical tails on the same day, and it settles this pairing. The Hayward's runs 4.9% (12 of the pooled 244) and is mostly shipping damage and non-genuine cartridges supplied with the unit. The Waterway's runs 20.6% (7 of 34) and every readable review is the tank bottom cracking at two to three years, with owners reporting the claim refused as out of warranty. The $539 saving was our reason for crowning the Waterway best value when this roundup published; it is no longer our recommendation at this size. If the Hayward is out of budget, the Pentair Clean & Clear Plus 420 at about $1,324 is the pick, not the Waterway.
Tale of the tape
| Model | Best for | Warranty | Price |
|---|---|---|---|
| Reads well, fails in year three | Not stated on the listing — confirm with the seller | ~$1,280typical at AmazonCheck price → | |
| Size up | 1 yr parts, no labor on the W3 (Open Line) SKU sold online — the dealer-only non-W3 is listed at 3 yr parts + 1 yr field labor, but the manual in the box says 1 yr. Get the term in writing. | ~$1,819typical at AmazonCheck price → |
Prices move constantly — any Amazon price shown is as of the date noted and subject to change; tap through for today's number.
Prices move constantly — tap through for today's number.
What would decide it
- Owner proof: Waterway Crystal Water 425 sq ft Cartridge Filter reads 4.4★ across 34 owners; Hayward SwimClear 425 sq ft Multi-Element Cartridge Filter reads 4.5★ across 244. Depth of sample matters as much as the star.
- The money: Waterway Crystal Water 425 sq ft Cartridge Filter streets ~$1,280, Hayward SwimClear 425 sq ft Multi-Element Cartridge Filter ~$1,819 — MSRPs, not sale lows, decide the tier.
- Waterway Crystal Water 425 sq ft Cartridge Filter — your pick if: almost nobody at this price. It is the same construction as the majors and it reads 4.4★, but every critical reviewer we could read describes the same thing: the bottom of the tank splitting at two to three years, discovered by a doubled water bill, out of warranty.
- Hayward SwimClear 425 sq ft Multi-Element Cartridge Filter — your pick if: your pool has outgrown a 325 and you want Hayward's build, with the pooled-rating caveat understood.
The full cards
Waterway Crystal Water 425 sq ft Cartridge Filter
Reads well, fails in year threeYour pick if almost nobody at this price. It is the same construction as the majors and it reads 4.4★, but every critical reviewer we could read describes the same thing: the bottom of the tank splitting at two to three years, discovered by a doubled water bill, out of warranty.
“Great product, still filtering after 2 years. Easy to take apart and reassemble at filter changes or cleaning. Cartridges are reasonably priced for annual replacements.”— Michael, Amazon
- Four cartridges at 425 sq ft, confirmed by Waterway's own parts list — genuinely the same construction class as the majors
- About $539 under the Hayward at identical filter area, and about $800 under it on Waterway's second listing
- No free-product reviews in the base, and no size variants pooled into the score
- Seven of seven readable critical reviews describe the tank bottom cracking, most at two to three years
- Owners report the failure is found only when the water bill doubles, and that Waterway declines the claim as out of warranty
- A 20.6% critical rate against 2.7% and 2.9% on the two filters we do recommend
- 34 ratings is a shallow base for a pressure vessel you expect to own for a decade
- Waterway publishes no warranty term on the listing, which owners say they discover only when they claim
- Amazon carries this exact model under two listings at different prices and different scores — 4.4★ on one, 3.3★ on the other, about 4.0★ combined
The tank bottom cracks at two to three years and the claim is refused
7 of 34 ratings are critical (20.6%) and every readable one describes the tank bottom cracking at two to three years; four of the five recent crack reports are not Verified Purchase, which fits a filter usually fitted by an installer · critical reviews read August 2026
Your pick if your pool has outgrown a 325 and you want Hayward's build, with the pooled-rating caveat understood.
“This is so much better than our old sand filter. The water is very clear and changing out the cartridges is way easier than changing out the sand on the sand filter. I would definitely recommend.”— Valerie, Amazon
- 425 sq ft of dirt capacity for long cycles
- Same four-element construction as the rest of the line
- Its rating is POOLED with the 525 — both read 4.5★/244, so the number does not describe this size alone
- Waterway's 425 costs $539 less for the same filter area
- Strap-wrench lid, same as the rest of the line
Shipping damage and non-genuine cartridges — 12 critical reviews across the 244-rating base it shares with the 525
12 critical across the 244 ratings this shares with the 525 (4.9%); mostly shipping damage and non-genuine cartridges supplied with the unit · critical reviews read August 2026
FAQ
Is the Waterway Crystal Water as good as a Hayward SwimClear?
Structurally it is the same kind of filter — four cartridges, 425 square feet, confirmed against Waterway's own parts list — for about $539 less. What you give up is evidence depth and a stated warranty: Waterway has 34 owner ratings against Hayward's brand history, and publishes no warranty term on the listing. If the saving matters more than the paper trail, it is a genuine buy rather than a compromise.
Why does the Hayward 425 show the same rating as the 525?
Because the two share one pooled base. Both read 4.5★ across 244 — identical score and identical count on sizes $430 apart — which means the number describes the pair, not either size individually. It is not wrong, it is just less specific than it looks. The SwimClear 325's 4.6★ across 187 is the Hayward figure that describes a single size.
Full fight coverage
Every number on this page derives from the same verified data that renders our showdowns — dated owner-rating reads, MSRP-based tiers, and rulings only where a real fight happened. Data last verified: August 2026. Methodology and monetization disclosure: how we test.