The Simple Brew 12-Cup Switch is Mr. Coffee’s stripped-down entry point: one switch, no clock, no programming, a reusable filter, and a list price around $40. That simplicity is the whole pitch, and it is also where the machine runs into trouble — TechGearLab’s lab testing found the thing it is supposed to do well, brew consistently, is the thing it does least consistently.
The temperature problem
TechGearLab measured an average brew temperature of 194.8°F across multiple runs, which sounds fine on paper — it’s close to the 195°F baseline most coffee references treat as a minimum for full extraction. The problem is the spread around that average: individual brews ranged from 176.9°F to 207.3°F, a swing of more than 30 degrees between pots that should have been identical. Brew time was similarly erratic, averaging 8 minutes 51 seconds but varying noticeably run to run. A single-switch machine with no thermostat feedback has no way to correct for this; you get whatever that particular heating cycle happens to produce.
No auto shut-off, by design
The switch that turns the machine on is also the only thing that turns it off. There is no timer and no automatic cutoff, so TechGearLab flagged it plainly: you have to remember to switch it off yourself after brewing, or it stays hot. That is a fair trade for a machine this simple and this cheap, but it is worth knowing before you buy it for a household where that reminder might not happen every day.
What the reusable filter actually saves you
The machine ships with a reusable plastic-and-metal filter basket, and the components that touch coffee are dishwasher-safe, which is the main convenience argument for buying it over a similarly priced machine that requires paper filters. TechGearLab’s testing also turned up uneven water distribution over the grounds during brewing, which is a plausible contributor to the inconsistent results above — water hitting the bed unevenly changes how much of it extracts before hitting the carafe. Descaling, when you eventually need it, is a lengthy process at around 70 minutes.
Where the low price shows
TechGearLab scored the machine 41 out of 100 overall, driven mostly by the brew-quality inconsistency above and two smaller annoyances: the water level markings on the reservoir are hard to read at a glance, and the carafe handle is short enough to be awkward for some hands. None of this makes the machine unsafe or unusable — it makes coffee, and it does it for $40 — but it means the “12-cup” promise on the box doesn’t come with any promise about what temperature or strength those 12 cups will be from one morning to the next.
Before you buy
- Don’t buy this expecting programmable timers or a strength setting — it is genuinely a single on/off switch.
- Plan to unplug or switch it off manually every time; there is no auto shut-off to catch you.
- If consistent brew temperature matters to you more than price, this is not the machine that delivers it.
- Budget the 70-minute descaling cycle into your maintenance routine rather than assuming a quick rinse will do.
Test results and score from TechGearLab’s lab review of the Mr. Coffee Simple Brew 12-Cup Switch. CoffeeLogik has not tested this machine in person.
