Every Everpure under-sink system takes exactly one cartridge family, and yours is stamped on the cartridge you already own: on the side label, or on the top cap on some revisions. Pull it, read the model, and you are done. This lookup covers the four residential workhorses (H-300, H-54, H-104, and H-1200), what separates them, and why a cartridge that looks nearly identical on the shelf is still the wrong part for your system's head.

Written by the Water Filters FAST filter experts. Reviewed by Phil McNamara, owner, Water Filters FAST. Updated July 2026.

The one rule that matters: Everpure H-series cartridges are not interchangeable. The twist-in quick-change design is shared; the cartridges themselves are not. Match the model stamped on your current cartridge, every time.

The 60-second lookup

1. Twist out your current cartridge (a quarter turn releases it) and read the model printed on the label: H-300, H-54, H-104, H-1200, or another H-series name, usually with an EV part number beside it.
2. No cartridge to read? Check the system head or the paperwork that came with the unit; Everpure lists the recommended cartridge on both.
3. Still unsure? Call 855-789-FAST and read the team whatever numbers you can find. They will confirm the match before you buy.

Choosing the right Everpure replacement cartridge: the four residential models

Everpure H-300 (EV9270-71): the standard household cartridge

The most common cartridge in the residential line. Rated for 300 gallons or about 6 months, filtering to 0.5 micron nominal on current revisions (the listing spec sheet confirms yours), it is the fit for a typical household's dedicated drinking water faucet. If your kitchen has a single Everpure head feeding one tap and you replace roughly twice a year, odds are good you are holding an H-300. Full specs, install steps, and flush procedure are in the Everpure H-300 replacement guide, and the Everpure collection stocks the cartridge.

Everpure H-54: mid-capacity, longer runway

Roughly 750 gallons of capacity puts the H-54 between the H-300 and the big-capacity cartridges; its micron rating sits in the same fine-filtration class as the H-300, with the listing's spec sheet confirming your revision. Households that push more water through the drinking tap, or that simply prefer a six-to-twelve-month rhythm, often run this one. Everpure has issued more than one EV part number for the H-54 family across revisions, so confirm yours against the label on your current cartridge (or read it to the team at 855-789-FAST). The Everpure H-54 guide covers the fit check and swap in detail, and H-54 cartridges live in the same Everpure collection.

Everpure H-104 (EV9612-11): high-capacity single cartridge

At about 1,000 gallons, the H-104 suits larger households and heavy drinking-water use where changing a cartridge twice a year feels like a chore. It also anchors many higher-volume under-sink installs. Check its micron rating against the spec sheet on the product listing rather than assuming it matches the H-300. Details and install steps are in the Everpure H-104 guide.

Everpure H-1200 (EV9282-00): the dual-cartridge system

The H-1200 is the different one: two cartridges working as a matched pair, replaced together, typically around the 12-month mark. Rated at roughly 1,500 gallons for the pair, it carries the highest capacity of the four and feeds kitchens that treat the Everpure tap as the household's primary water source. An under-sink setup with two heads side by side belongs to this family; the Everpure H-1200 replacement guide walks the paired swap.

Quick comparison table

Treat capacity as a design difference between systems rather than a substitution ladder. A higher-capacity cartridge does not "upgrade" a lower-capacity head; each cartridge seats only in the system built for it. Gallon ratings and micron specs above reflect the manufacturer figures shown on each product listing; the listing's spec sheet is the final word for your revision.

Why the wrong cartridge will not work (even when it looks right)

Everpure's quick-change cartridges share the same general shape and the same quarter-turn motion, which is exactly why cross-buying is so common. But the head keys, micron ratings, flow specs, and capacities differ across the line. A near-miss cartridge either will not seat and lock, or seats badly and leaks. The stamp on your old cartridge exists to end the guessing; use it.

OEM and compatible options

Genuine Pentair Everpure cartridges are the factory match. Compatible cartridges tested to NSF/ANSI 42 that name your exact EV number fit the same heads at a lower price per change. Either way, replacing on schedule matters more than the logo: a spent cartridge of any brand is just a slow spot in your water line.

Frequently asked questions

Are Everpure cartridges interchangeable?

No. Each H-series cartridge fits only the system built for it. Match the model stamped on your current cartridge or printed on the system head.

How do I find my Everpure part number?

Twist out the current cartridge and read the label: model name (H-300, H-54, H-104, H-1200) and usually an EV number (EV9270-71, EV9612-11, EV9282-00). Either identifier confirms the right replacement.

Which Everpure cartridge lasts the longest?

Among these four, the H-1200 dual-cartridge system carries the highest capacity, with the H-104 the highest-capacity single cartridge at about 1,000 gallons. But longevity only counts in the system designed for that cartridge; you cannot move up in capacity without changing the head.

How often should I replace an Everpure cartridge?

At the earlier of the cartridge's gallon rating or the calendar: roughly 6 months for an H-300, 6 to 12 months for the H-54 and H-104 depending on use, and about 12 months for the H-1200 pair. Slower flow or a taste drifting back toward tap water means swap now.

My cartridge model is not one of these four. What now?

Everpure makes more H-series and commercial-line cartridges than this residential lookup covers. Read whatever is stamped on your cartridge or head to the team at 855-789-FAST and they will identify it.

Order the right cartridge, shipped same day

Once the stamp tells you which family you own, ordering takes a minute. The Everpure collection carries the H-300, H-54, H-104, H-1200, and compatible options. Weekday orders before 1pm CST ship the same day, shipping is free over $75, and every order carries a 30-day return policy. When in doubt, call the filter experts at 855-789-FAST; a ten-second read of your cartridge label saves a week of shipping the wrong part both ways.