Epson EcoTank ET-4850 vs ET-3850: The Office Model, and Whether You Need It

Updated June 18, 2026

Epson EcoTank ET-4850

VS

Epson EcoTank ET-3850

These two are rungs on one ladder, not rivals. The Epson EcoTank ET-4850 and the ET-3850 come off the same cartridge-free supertank line: the same refillable EcoFit bottle ink, the same automatic document feeder, the same wired Ethernet jack, the same automatic two-sided printing. Whichever you pick, you have walked out of the cartridge tax that drives most printer regret — and you have done it with the same office hardware on both. So the question is never which one saves more on ink. They save the same.

The split is the office model's extra job. The ET-4850 is the fully-loaded unit at the top of the all-in-one line — Epson sells it as an Epson EcoTank ET-4850 Wireless All-in-One Cartridge-Free Supertank with Scanner Copier, Fax, ADF and Ethernet — and a fax modem plus a larger touchscreen is most of what its higher rung buys. The ET-3850 is the home-office model below it: the listing names it a Cartridge-Free Supertank with Scanner Copier, ADF and Ethernet, with no fax. The rest of this page is about whether that fax — and a nicer panel — are worth the step for how you actually work.

Epson EcoTank ET-4850

Epson EcoTank ET-3850

At a Glance

The ink math is a tie — both already won it

Here's the thing: the reason to read an EcoTank-versus-EcoTank comparison is not to find the cheaper printer to feed. They cost the same to feed.

Both escape cartridges by the identical route — the same refillable EcoFit bottle system pours into both, so neither has a cost-per-page edge over the other. The owner record on the line is blunt about why that matters: the framing one owner uses is exact — The new tank printers are more expensive but the savings on the ink pays for the printer over its life. RTINGS' cost-per-print and page-yield testing puts that bottle-fed bracket far below any cartridge printer, and Consumer Reports' inkjet running-cost testing reaches the same verdict. We lay out exactly how that cost axis gets weighed against the rest in our inkjet comparison criteria.

So spend your attention on the hardware, because that is where these two differ — and the surprise is how little they do. The cost-per-page line is flat between them.

Most of the office hardware is on both

With cost off the table, the natural assumption is that the dearer office model carries the office features and the cheaper one goes without. On this pair, that assumption is mostly wrong — the home-office ET-3850 already has the office stack.

Start with the parts people pay extra for. The ET-3850 carries an automatic document feeder for multi-page scan and copy jobs, plus the same wired Ethernet jack a budget printer skips. Both print fast for documents — Epson rates the ET-4850 to Prints up to 15.5 pages per minute in black, and the ET-3850 carries the identical rating, also rated to Prints up to 15.5 pages per minute. Both do automatic duplex too: the ET-4850's listing notes Auto 2-sided printing helps save paper, and the ET-3850 matches it with Auto 2-sided printing helps save the same. Feeder, Ethernet, speed, duplex — level.

So what does the office model's premium actually buy? A fax modem, first — the one hardware line the ET-3850 omits. Then the panel: the ET-4850 carries the larger touchscreen at the top of the line, where the ET-3850 runs a smaller display. That is close to the whole list. Owners value the wired link on both, and on the ET-4850 one notes it sits on ethernet. by the router and prints without Wi-Fi trouble — but Ethernet is on the ET-3850 too, so it is a shared win, not a reason to step up.

Print quality is a wash as well, and good. One ET-3850 owner calls it The print quality is flawless and beautiful with crisp black text — and the office model shares the engine, so expect the same crisp document output. Owner ratings tilt slightly to the office model — 4.3 stars across 1,800 reviews against the home model's 4.1 across 801, per their retail listings — a real edge, but a slim one, and not worth a fax you will not use.

The quirks both rungs share

One set of failure modes ignores the price tag entirely: these are the same family, so they inherit the same trouble. This is the part no EcoTank buyer escapes by stepping up.

Idleness first. Both run liquid ink, so both dry out if left alone — the owner protocol on the line is specific: Try to print something at least once per week with both color and black ink on plain paper. Skip that and the heads stripe; one owner of three EcoTank units watched all of them go from fine to All three were great at first but started printing black stripes from top to bottom. The ET-4850 carries the same warning to you want to avoid ink drying in the pipes if you print infrequently. We track that idle-clog risk in our safety and known-risks guidance.

The feeder is the second shared limit, and it under-delivers on both: it scans one side only. An ET-4850 owner found it doesn't scan doublesided and also had some issues pulling not-perfect sized receipts. — and the ET-3850's identical ADF carries the same gap. There is a build caution too: one ET-4850 owner reports that After so many prints the paper from the bottom tray will stop feeding and jams on every job. And color is the honest weak spot for the whole line — owners call EcoTank document-line output The color on the ET series is very muted, fine for documents, flat for photos.

Epson EcoTank ET-4850

Epson EcoTank ET-3850

So which EcoTank — the office model or the home one?

Because the ink math is a tie and most of the office hardware is on both, "who buys which" comes down to one question: do you fax? If you're coming from a clogged or bricked cartridge printer, either EcoTank is the upgrade, and the cost savings land the same on both. The split is the office model's fax modem and its slightly nicer panel versus the price gap.

Buy the ET-4850 if…

…faxing is part of your work, or you want the largest control screen in the line. The fax modem is the one piece of hardware the ET-3850 cannot match, and for a home office that still sends or receives faxes — legal, medical, real-estate paperwork — that alone settles it. You also get the bigger touchscreen and a marginally better owner record at 4.3 stars. Going in, accept that you are paying for the fax, not for cheaper printing or a better feeder — those are identical to the cheaper sibling.

Buy the ET-3850 if…

…you never fax, which is most home offices. The ET-3850 gives you the identical bottle-ink cost, the same automatic document feeder, the same wired Ethernet, the same auto-duplex and the same crisp black text — for less money, with only the fax and a smaller screen surrendered. For the household that prints homework, recipes, return labels and the weekly stack of paper, that is the honest pick: the office model's premium would buy a feature that sits unused. We map where each EcoTank rung lands in the line in our printer categories and family structure guide.

Skip both if…

…you print rarely, or you print mostly photos. An EcoTank that sits idle for weeks fights you on either rung — a color laser is the honest pick for sporadic, text-only use, with no liquid ink to dry out. And neither of these is a photo machine; the muted document-line color is wrong for saturated prints. For the full cross-brand running-cost picture, weigh both against the field in our best supertank printers roundup.