Office printersENERGY STAR certified
Lexmark MS431dw
42 ppm mono printer.
Speed
42
pages a minute
Color
Mono
Laser / LED
Electricity a year
$3.04
23.4 kWh at 13¢/kWh
Duplex
Yes
automatic two-sided
At 42 pages a minute, the MS431dw is faster than 123 of the 305 office printers certified, and 157 are faster.
Its certified typical electricity use of 23.4 kWh a year is 7% below the median of 66 monochrome office printers within 20% of its speed (25.2 kWh). Electricity is a small part of what a printer costs to run; toner or ink per page is usually the larger one.
- Maker
- Lexmark
- Model
- MS431dw
- ENERGY STAR type
- Printers
- Marking technology
- Laser / LED
- Color
- Monochrome
- Speed
- 42 pages a minute
- Size format
- Standard
- Automatic duplex
- Yes
- Typical electricity use
- 23.4 kWh a year (TEC method)
- Default delay to sleep
- 15 min
- On the market since
- Apr 2020
- ENERGY STAR certified
- 7 Oct 2019
Certified under the same record
The maker lists these as the same machine or a variant of it: B3442dw, same as tested model, intended for Open Market, M1342, Same as tested model, sold in BSD Market, MS431dn, same as tested model except no wireless, 1Gb Ethernet instead of 10/100Mb.
Source: ENERGY STAR certified imaging equipment dataset, US EPA, record 2349204, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the MS431dw
Certified office printers from other makers, same color class, within 20% of its speed.
| Model | Type | Speed | kWh / yr | Certified |
|---|---|---|---|---|
| Konica Minolta bizhub 4000i | Mono, Laser / LED | 42 ppm | 29 | Aug 2019 |
| Brother HL-L5000D | Mono, Laser / LED | 42 ppm | 27 | Aug 2019 |
| Kyocera P2040dw | Mono, Laser / LED | 42 ppm | 25 | Jul 2016 |
| HP Laser 408dn | Mono, Laser / LED | 42 ppm | 31 | Dec 2019 |
| Pantum BP5100DN | Mono, Laser / LED | 42 ppm | 28 | Nov 2020 |
| Sharp MX-B427PW | Mono, Laser / LED | 42 ppm | 23 | Aug 2020 |
Lexmark
More Lexmark office printers
| Model | Type | Speed | kWh / yr | Certified |
|---|---|---|---|---|
| B3340dw | Mono, Laser / LED | 40 ppm | 23 | Oct 2019 |
| C3224dw | Color, Laser / LED | 24 ppm | 14 | May 2019 |
| CS331dw | Color, Laser / LED | 26 ppm | 15 | May 2019 |
| CS431dw | Color, Laser / LED | 26 ppm | 18 | Dec 2019 |
| CS531dw | Color, Laser / LED | 35 ppm | 24 | Dec 2022 |
| CS622de | Color, Laser / LED | 40 ppm | 29 | Sep 2019 |
| CS632dwe | Color, Laser / LED | 42 ppm | 27 | Dec 2022 |
| CS720dte | Color, Laser / LED | 40 ppm | 38 | Aug 2019 |