Everpure H-300 vs H-104 vs i2000: Which Cartridge Do You Actually Need?

Side-by-side comparison of the three most common Everpure cartridge classes — H-300, H-104 and i2000. Dimensions, capacity, applications, interchangeability rules, and compatible replacements at 30-50% lower cost.

Three cartridge names come up constantly in Everpure sourcing conversations: H-300, H-104, and i2000. They look similar, they all use the same quarter-turn bayonet fitting, and they’re frequently mixed up in purchase orders — which leads to filters that don’t fit the space, exhaust early, or over-serve the application at twice the necessary cost.

Here’s the clean comparison, plus the interchangeability rules that let you rationalize a mixed installed base.

The Three Cartridges at a Glance

	H-104	H-300	i2000
Size class	15”	20”	20”
Dimensions (D × L)	79 × 371.7 mm	79 × 514.7 mm	79 × 514.7 mm
Media	Coconut carbon block	Coconut carbon block	Coconut carbon block
Rated capacity	3,000 gal	9,000 gal	9,000 gal
Primary application	Undersink drinking water	High-capacity drinking water	Ice machines
Typical setting	Homes, offices, light commercial	Larger households, offices	Restaurants, bars, hotels
Compatible replacement	XZH-EH104	XZH-EH300	XZH-EI2K

All three share the same 79 mm diameter and the same bayonet head interface — the differences are length, capacity, and application tuning.

How to Choose

Choose H-104 (15”) when…

The application is drinking water at a tap — undersink, office pantry, small café water station.
Volume is modest: 3,000 gallons covers a typical 6-month cycle at household/office consumption.
Cabinet height is limited — at 372 mm it fits where a 20” cartridge won’t.

Choose H-300 (20”) when…

Same drinking-water application, but volume is 2–3× higher — busy offices, larger households, water-forward cafés.
You want to stop replacing cartridges early: 9,000 gallons is three times the H-104’s capacity for a cartridge that costs nowhere near three times as much. On a per-gallon basis, the 20” class is almost always the better buy if it fits.

Choose i2000 (20”) when…

The cartridge feeds an ice machine. This is the i2000’s entire purpose — the same 20” carbon block platform tuned for ice service, normally paired with a polyphosphate scale-inhibitor feed (XZH-EIMF class) in hard-water areas.
For high-volume ice (over ~450 kg/day), step up to the i4000 class (up to 18,000 gal). Sizing chart in the ice machine filter guide.

Interchangeability Rules

Same head, same length → interchangeable. H-300 and i2000 are both 20” cartridges on the same interface; an i2000 will physically run in an H-300 position and vice versa. Application tuning differs, so match the cartridge to the job — but in a pinch, they fit.
Different length → check clearance, not the head. An H-104 head accepts a 20” cartridge if there’s 150 mm of extra vertical clearance below. Upgrading 15” positions to 20” cartridges is a common capacity upgrade that requires no plumbing work.
Never downsize an ice machine position. Swapping an i2000 for a 15” cartridge cuts capacity to a third — the filter exhausts months before the 6-month PM visit, and the machine scales up unprotected.

Full model list including MC2, 4FC, H-54 and i4000: Everpure cross-reference chart.

The Cost Angle

Original cartridges retail roughly: H-104 $60–90, H-300 $100–150, i2000 $120–180. Compatible replacements with identical dimensions, NSF-certified materials, and coconut carbon block media run 30–50% below those numbers factory-direct — and the gap widens at distributor volume (MOQ from 200 pcs, private label available).

Browse the Everpure-compatible line or read how private-label OEM works.

Frequently Asked Questions

Can I put an i2000 on my undersink drinking-water head?

Physically yes (same interface, same 20” length as H-300). It will filter drinking water fine. But you’re paying an ice-service premium for no benefit — the H-300 class is the right pick.

Can I use an H-300 on my ice machine?

It fits, and it will carbon-filter the water. What you lose is the ice-service pairing — in hard water, an ice position should run with scale inhibition, which the i2000-class installation normally includes. Add a polyphosphate feed regardless of cartridge choice.

What if I don’t know which model is installed?

Measure the cartridge length: ~372 mm is the 15” class (H-104/H-54), ~515 mm is the 20” class (H-300/i2000). Or send a photo of the head and cartridge to our engineering team — identification is free.

Do compatible cartridges fit all three positions?

Yes — XZH-EH104, XZH-EH300, and XZH-EI2K are dimensional drop-ins for their respective classes, produced against the original interface geometry and batch-tested for sealing.

Summary

H-104 = 15”, 3,000 gal, drinking water, tight spaces. H-300 = 20”, 9,000 gal, high-volume drinking water, best per-gallon cost. i2000 = 20”, 9,000 gal, ice machines, pair with scale inhibition.
Same diameter and head interface across all three; length and clearance are the only physical constraints.
Compatible replacements cut 30–50% off every position — request a quote with your model mix.