What ink does the Epson WorkForce Pro WF-3720 use?
Running costs are competitive for its class. On a typical 575 pages/month, the 2‑year total could be £363.55 (keep) vs £334.50 (upgrade incl. hardware).
The Epson WorkForce Pro WF-3720 uses Epson 34 ink cartridges.
Running costs at a glance
| Variant | Cost | Yield | Est. p/page |
|---|---|---|---|
| Black (standard) | £16.99 | 350 pages | 4.9p |
| Black (XL) | £29.99 | 1,100 pages | 2.7p |
| Colour (standard) | £12.99 | 300 pages | 4.3p |
| Colour (XL) | £22.99 | 950 pages | 2.4p |
What would you save by switching?
Comparison uses a simple 2‑year estimate at 575 pages/month (based on this model’s recommended volume).
| Option | Printer cost | Ink cost (2 years) | Total (2 years) |
|---|---|---|---|
| Keep Epson WorkForce Pro WF-3720 | You own this printer | £363.55 | £363.55 |
| Upgrade to Epson EcoTank ET-2850 | £300.00 | £34.50 | £334.50 |
Explore this printer
Best ink and cartridge options
Compare standard vs XL and see the best value options for this printer.
Cost per page
Check approximate running costs for black, colour, and XL cartridges.
Keep or upgrade?
See whether this model is still good value or has become expensive to run.
Common printer problems
Open the troubleshooter for print quality, paper, and connection issues.
Cartridge Compatibility Chart
| Cartridge Name | Colour | Type | Est. Yield |
|---|---|---|---|
| Epson 34 Black | black | Standard | ~350 pages |
| Epson 34XL Black | black | XL / High Yield | ~1100 pages |
| Epson 34 Colour | colour | Standard | ~300 pages |
| Epson 34XL Colour | colour | XL / High Yield | ~950 pages |
Original vs. Compatible Cartridges
When buying ink for your Epson WorkForce Pro WF-3720, you typically have two main options:
Original (OEM) Cartridges
Manufactured by Epson. These offer guaranteed reliability and print quality but typically come at a higher price point. They are the best choice for printing high-resolution photos or archival documents.
Compatible / Remanufactured
Made by third-party companies. These are often significantly cheaper than original cartridges. Quality can vary between brands, but reputable suppliers offer guarantees. These are often a cost-effective choice for everyday document printing.
When to Replace Your Ink
You should look into replacing your cartridges when print quality begins to fade, colors appear missing, or your printer displays a "Low Ink" warning. For inkjet printers like this, it is recommended to replace cartridges as soon as quality drops to prevent the printhead from drying out or clogging.
Tip: If you print infrequently, run a print head cleaning cycle once every few weeks to keep the ink flowing smoothly and prevent blockages.
Available Cartridges
Links may be affiliate links. We verify compatibility, but always check the retailer page before buying.
More cartridge deals from the feed
These are the best feed matches that're not mapped to our current local cartridge variants yet.
Frequently Asked Questions
What ink does the Epson WorkForce Pro WF-3720 use?
It uses the Epson 34 range. Standard and high-yield (XL) variants may be available depending on the cartridge set.
Is the Epson WorkForce Pro WF-3720 expensive to run?
Estimated running cost is around 2.7p per black page and 2.4p per colour page. Whether it feels expensive depends on your monthly volume and whether you use standard or XL supplies.
What's the cheapest ink for the Epson WorkForce Pro WF-3720?
For black printing, the best value is typically the high-yield (XL) option — it costs more upfront but usually works out cheaper per page.