Eskiin vs Afina

Quick picks

Ranked on what can be verified: a traceable certification first, then media matched to your disinfectant. Tap a row to jump to the full write-up.

#	Product	Best for	Certification	Price
1	Afina Filtered Shower HeadThe best chlorine number independently recorded for any filtered shower head — just under 99 percent. The same test found it reduced no hardness at all and that disinfection byproducts rose rather than fell, which is why it does not top our ranking.KDF-55 with calcium sulfite and activated ca…	The highest measured chlorine reduction	None	$129.00 · View on Amazon
2	eskiin Filtered ShowerheadSells more search interest than almost anything else in the category and publishes a media list that reads well. Its certification wording — tested to far exceed NSF-177 — is the same construction Jolie uses, and it means the same thing: not certified.KDF-55 and calcium sulfite with coconut acti…	The highest-volume brand search	None	$149.00 · View on Amazon

Every figure in this table links to the page it came from in the write-ups below. Units we claim to have tested: 0.

Top pick

Afina Filtered Shower Head

The highest measured chlorine reduction

The best chlorine number independently recorded for any filtered shower head — just under 99 percent. The same test found it reduced no hardness at all and that disinfection byproducts rose rather than fell, which is why it does not top our ranking.

Published specifications

Filter media

KDF-55 with calcium sulfite and activated carbonSource: Afina filtered shower head, chrome — listing on Amazon.com (retrieved 2026-09-01)

Stated flow rate

2.5 GPM with a 1.8 GPM restrictor supplied; 1.85 GPM measured independentlyThe measured figure is WaterFilterGuru's, not ours. A separate 1.8 GPM variant is sold for California and New York.Source: WaterFilterGuru, "Afina Shower Head Review" — independent lab testing, credited to them (retrieved 2026-09-06)

Rated cartridge life

90 days on the shower head listing; the replacement-filter listing says every 2 monthsAfina's own two listings disagree. We report both rather than picking the flattering one; the independent reviewer recorded 2 months.Source: Afina filtered shower head, chrome — listing on Amazon.com (retrieved 2026-09-01)

Chloramine

Not publishedAfina publishes no chloramine performance figure.

Format

Replacement shower head with integrated filterSource: Afina filtered shower head, chrome — listing on Amazon.com (retrieved 2026-09-01)

Housing

Not publishedFinishes are listed — chrome, brushed nickel, matte black — but no housing material is stated.

What it does well

• +Independently measured at just under 99% chlorine reduction, 1.68 PPM down to 0.02 PPM
• +Media named outright: KDF-55 with calcium sulfite and activated carbon
• +Measured flow of 1.85 GPM, which the reviewer recorded as retaining 100% of baseline
• +Sold in several finishes, and in a 1.8 GPM variant for California and New York

Where it falls short

• −No certification of any kind
• −Disinfection byproducts rose in independent testing
• −Marketed for hard water while reducing no hardness
• −Short cartridge interval, and the maker's own figures disagree on what it is

What it does not do

• ×It does not soften water. An independent lab measured hardness going in at roughly 250 PPM and coming out at 251 — despite the hard-water marketing.
• ×It did not reduce disinfection byproducts in that test. All three measured DBPs increased after filtration rather than falling.
• ×It holds no certification. The independent reviewer recorded it as neither performance certified nor design certified.

Who it is for

Someone on chlorinated municipal water who wants the strongest measured chlorine result in a replacement head and is buying for that specifically.

Skip it if

Your report shows disinfection byproducts near their limits, or you want a certification. Neither is this product's strength — the DBP discussion.

$129.00 · View on Amazon

#ad · how we are funded · price as of October 16, 2026

The full Afina Filtered Shower Head write-up

Pick 2

eskiin Filtered Showerhead

The highest-volume brand search

Sells more search interest than almost anything else in the category and publishes a media list that reads well. Its certification wording — tested to far exceed NSF-177 — is the same construction Jolie uses, and it means the same thing: not certified.

Published specifications

Filter media

KDF-55 and calcium sulfite with coconut activated carbonReported by the maker in its own product copy.Source: eskiin brand store on Amazon.com (retrieved 2026-09-01)

Stated flow rate

Not publishedNo flow rate could be retrieved from eskiin's own material on 2026-09-01.

Rated cartridge life

Not publishedNo gallon capacity or replacement cadence could be retrieved on 2026-09-01.

Chloramine

Not publishedNo chloramine performance data could be retrieved.

Format

Replacement shower head with integrated filterSource: eskiin brand store on Amazon.com (retrieved 2026-09-01)

Housing

Not publishedNot published in material we could retrieve.

What it does well

• +Media stated: KDF-55 and calcium sulfite with coconut activated carbon
• +The single highest-volume brand term in this category
• +Direct-sold, so cartridge supply is not dependent on a marketplace seller

Where it falls short

• −"Far exceed NSF-177 certifications" is a claim, not a certification
• −No canonical Amazon detail page we could verify
• −No published flow rate, gallon capacity or chloramine figure we could retrieve

What it does not do

• ×It does not soften water. KDF-55 with calcium sulfite and carbon does not remove hardness minerals.
• ×It does not hold a stated NSF/ANSI 177 certification; the published wording is that it exceeds NSF-177.
• ×We could not confirm a canonical Amazon listing for it, so the buy link below is a search rather than a product page.

Who it is for

A reader who arrived searching the brand by name and wants the media pairing stated before deciding.

Skip it if

You want to buy it on Amazon with confidence in the listing, or you want a certification you can look up. eskiin sells mainly direct, and we could not confirm a canonical Amazon detail page.

$149.00 · View on Amazon

#ad · how we are funded · price as of October 16, 2026

The full eskiin Filtered Showerhead write-up

Side by side

Same chemistry, different amount of evidence

These two are close relatives. Both are replacement heads at the premium end. Both run KDF-55 and calcium sulfite with carbon added. On paper there is no reason to expect them to perform differently, and nothing we found suggests they do.

The difference is that somebody has measured one of them. Afina went on an independent bench and came back at roughly 99 percent chlorine reduction, with its flow independently confirmed at 1.85 GPM retaining full baseline pressure. eskiin — one of the two highest-demand brands in the category — has no such result that we could locate, publishes no flow rate, and publishes no cartridge interval either.

Both describe themselves against NSF-177 without holding it. Afina's wording is "tested to meet NSF-177 standards"; eskiin's is "proven to far exceed NSF-177 certifications". Both are sentences about a standard rather than certifications to it. The four filters that actually hold one.

The result Afina would rather you skipped

In the same independent test, all three disinfection byproducts the reviewer measured increased after filtration rather than falling. That is a genuinely odd finding, it is one test, and we are not going to omit it because the headline number is good.

It does not have an obvious mechanism and we would not treat it as settled. But if your water report shows TTHM or HAA5 near their limits, neither of these heads is your answer — byproducts need carbon-block volume a shower head does not have, which is why the units with published DBP performance are inline bodies.

What eskiin does not publish

Two numbers, and they are the two that govern living with the thing. No flow rate, so you cannot check it against a state that caps fixtures at 1.8 GPM or predict what it will do to a shower that is already weak. No cartridge interval, so you cannot work out what it costs to run past the purchase price. The cost arithmetic is only possible for one of these two.

Afina's cadence is not clean either — its shower-head listing says 90 days while its replacement-filter listing says every two months. That is a real inconsistency and we record it as one. But a contradictory figure is still more than no figure.

Neither one softens water

Afina is marketed into hard-water language and was measured moving hardness in the wrong direction by one part per million — 250 PPM in, 251 out. eskiin uses hard-water framing too. No shower filter performs ion exchange and independent testing of this category found none that reduced hardness. Why that is mechanical rather than a quality problem.

The verdict

• Buy Afina if you want the one with an actual independent measurement behind it, a confirmed flow rate, and the lower price of the two.
• Buy eskiin if the brand, the finish or the retail experience is what you are paying for — accepting that you are not buying better-evidenced filtration.
• Buy neither if you want a certification, or if your report shows disinfection byproducts near their limits.
• Buy neither on chloraminated water. KDF-55 does not break the chlorine-ammonia bond, and neither product claims it does.