Epson EcoTank ET-3850 Review: The Home-Office Supertank, If You Print

Updated June 18, 2026

Print Speed Up to 15.5 ppm black / 8.5 ppm color

Functions Print, Scan, Copy + ADF

Connectivity Wi-Fi, Ethernet, AirPrint, Smart Panel app

Ink System Cartridge-free refillable tanks

Two-Sided Printing Automatic 2-sided printing

Our Verdict

The EcoTank pitched at the home office that does not need fax: refill-bottle economics plus an ADF, Ethernet and 250-sheet tray, gated on volume. Print weekly and the tank premium pays itself back in ink; leave it idle and it stripes and clogs. Wrong choice for photo-led work or double-sided scanning.

Best for: A home office that prints something every week and wants the ADF, Ethernet, auto-duplex and 250-sheet tray the cheaper EcoTanks omit — on bottle ink that lasts years

Pattern Name

Printer

Style Name

ET-3843ET-3850 (Renewed)ET-3850

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Overview

The EcoTank that buys office hardware

An automatic document feeder is the one part the cheap EcoTanks leave on the shelf, and it is the part a working home office misses first. The ET-3850 adds it — plus a wired Ethernet jack and a 250-sheet tray — on the same bottle-ink economics the 2800-series already nailed, for a higher sticker. Epson's listing names the upgrade in one line: a Cartridge-Free Supertank with Scanner Copier, ADF and Ethernet. That feeder is the whole pitch above the entry models.

The job, though, isn't the spec sheet. It's the cost-of-ownership math the box hides — what bottle ink versus cartridge ink actually costs to run over months, and whether the higher sticker pays itself back. That fork is this site's organizing question, and the ET-3850 sits right on it.

Across the 13 owner reviews we read, a 4.1-star average hides a clean split along one line — usage. One end sounds like this:

All three were great at first but started printing black stripes from top to bottom, one owner writes of three EcoTank units that degraded after sitting. Another is four years in and still on the factory ink. Same line of machine — the difference is how often it runs.

What the spec sheet promises

The numbers are office-grade, not budget. Epson rates it to Prints up to 15.5 pages per minute in black — fast enough for real document runs — and it Prints at a 4800 x 1200 resolution for text and images. Two-sided printing is automatic: Auto 2-sided printing helps save paper, and owner reviews back that claim four-to-one in the mined set.

Connectivity is where this tier earns its premium. Beyond Wi-Fi, it ships a wired Ethernet jack — a stable, set-and-forget link a budget printer skips — plus a full software stack. The listing notes it Offers mobile printing options, including the Epson Smart Panel app for phone printing. None of that is the story owners tell, though.

The feeder is. The ADF is the single feature that justifies stepping up from the 2800-series — and it has one hard limit owners discover late: it scans one side only. It cannot capture the front and back of a page in a single pass. That gap matters more than resolution at this price, and it's the kind of detail we score against the full owner record in our comparison criteria for inkjet printers.

Performance & Real-World Testing

When it runs, it runs well

The print quality earns its praise. One owner calls it out plainly: The print quality is flawless and beautiful with crisp black text. For documents, worksheets and the weekly stack of home-office paper, the page that lands is not where this machine disappoints.

Setup lands as a surprise for owners braced for EcoTank friction. One summed up the first run as All easy peasy, struck by the build on unboxing; another Was printing in 20 minutes after opening the box. A 20-minute unbox-to-print on a tank machine is a good first day, and contrary to the clog horror stories, the friction shows up later — at idle, not at install.

Where the cracks show

For an Epson rated 4.1 stars, almost none of the complaints are about the printing itself.

Color is the honest weak spot. A heavy-volume EcoTank owner is blunt: The color on the ET series is very muted. That suits documents and flat graphics; it works against anyone hoping for saturated photo output. Independent testing agrees the EcoTank document line trades photo punch for running cost — RTINGS' document and photo quality testing separates the two jobs cleanly.

Not every owner is calm about it. The harshest mined review goes all-caps: EPSON HAS BECOME A SOURCE OF INSANITY AND WASTE OF MONEY. That voice is the minority — but it's the tax of buying any inkjet you then leave idle, and it's the failure mode this review keeps returning to.

Value Analysis

The math that justifies the sticker

Here's the thing about a supertank: the price tag is the scary part, and it's also the point. You pay more at checkout to stop paying at the cartridge shelf. The community framing is exact — The new tank printers are more expensive but the savings on the ink pays for the printer over time.

The sticker is the last big money an Epson EcoTank asks for, not the first of many cartridge sets.

What four years of ink looks like

The owner evidence is unusually strong on this. A four-year ET-3850 owner reports still sitting below halfway on the factory-included ink bottles — years of printing on the ink that came in the box. One household coming from a cartridge HP describes the running cost dropping by more than ten-fold after switching from HP to the tank line. That is the cartridge tax, refunded.

The independent data backs the shape. RTINGS' cost-per-print and page-yield testing puts bottle-ink cost-per-page far below cartridge ink, and Consumer Reports' inkjet running-cost testing reaches the same verdict. A supertank is dear to buy and cheap to feed; a cartridge machine is the reverse. We run that fork across the whole catalog in our type-versus-type tradeoffs analysis.

Street price versus list

One practical note before you judge the sticker: listings for the ET-3850 swing hard. The same model has appeared well below its list price and, at the top end, far above it — so the number you see today is not the number to anchor on. Check the live price, then weigh it against the bottle-ink math, not against the highest listing you remember.

What to Expect Over Time

Living with it: idle weeks and the feeder

Two things decide life with this Epson EcoTank past the first weeks: how often it runs, and what you bought the document feeder to do.

Idleness first, because every inkjet shares one failure mode a laser doesn't — liquid ink dries in the nozzles when the printer sits, and the machine burns ink on cleaning cycles trying to clear it. The damage builds over several weeks of disuse, not overnight. The owner protocol is specific: Try to print something at least once per week with both color and black ink on plain paper. Follow it and the clog rarely bites; ignore it and you meet black stripes the evening you need a boarding pass. We track that idle-clog risk in our safety and known-risks guidance.

The feeder is the second long-term thread, and it under-delivers for some. The ADF is the reason to buy this tier over the 2800-series, but it scans single-sided only — one two-year owner touched theirs barely a handful of times for that reason. If your scanning leans on double-sided originals, the feature you paid up for won't carry the load.

And there is a standing counterargument worth naming. For a text-only household, the cheapest cost-of-ownership often isn't an EcoTank at all: Get a laser printer. We have had our Brother for four years on cheap off-brand toner, one owner advises. A laser has no liquid ink to clog. If you print mostly black text and rarely touch color, that's the rival to weigh — we grade every machine against the full owner record in our inkjet printers evidence hub.