Monoprice Sous Vide Immersion Cooker 800W
- Sous Vide Machine
- 4 gallons
- 800 watts
- Touch
- More reviewed than 64%
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How it ranks among the 11 sous vide machines we track
4.2★ across 657 Amazon ratings, Bayesian-smoothed toward the category average.
657 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
800+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 11 sous vide machines we track - how the scorecard works · full sous vide machines data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jun 15, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Monoprice 121594 is an 800W immersion circulator with an adjustable clamp for pots from 2.6 to 4.0 gallons, a touch-screen display, and a temperature range of 41F to 212F for sous vide cooking.
Reviewers frequently position this as a lower-cost alternative to an Anova or Joule circulator, with several noting it lacks Bluetooth or app control despite some listing confusion on that point, for straightforward temperature-and-timer cooking, that's not a loss. Long-term reviews are split: some report five years of reliable use, while others report the motor overheating and getting noisy after several hundred hours.
- 800W max power
- 2.25 gal/min circulation pump
- 41F to 212F range
- Touch screen start/pause control
What buyers say
From Amazon customer reviews.
Owners who compared it against a calibrated thermometer report accurate temperature holding and quiet operation, and several call it a lower-cost route into sous vide than an Anova or Joule. The recurring complaint is motor durability under heavy use, one reviewer logged over 300 hours in ten months before the motor began overheating and getting noisy, and another reports the clamp housing cracking after years of use.
Strengths and trade-offs
Drawn from this product's published specifications.
- Accurate to within about half a degree in testing
- Quiet during normal operation
- Clamp fits pots from 2.6 to 4.0 gallons
- Costs less than name-brand circulators
- No app or Bluetooth control
- Motor can overheat under heavy cumulative use
- Clamp housing can crack after years of use
Performance notes
The pump circulates 2.25 gallons per minute to keep water temperature even throughout the bath, with the manufacturer specifying 1% temperature stability across a 41F to 212F range. The clamp mounts to pot walls from 2.6 to 4.0 gallons, and the touch screen sets time and temperature directly rather than through a phone app. One reviewer who checked it against a calibrated food thermometer found it ran within about half a degree.
Specifications
| Brand | Monoprice |
|---|---|
| Model | 121594 |
| Capacity & performance | |
| Capacity | 4 gallons |
| Power & efficiency | |
| Wattage | 800 watts |
| Voltage | 120 volts |
| Construction & materials | |
| Material | Stainless Steel |
| Color | Black, Silver |
| Other details | |
| Control Type | Touch |
How it compares
This product against the closest alternatives we track in sous vide machines.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Monoprice Sous Vide Immersion Cooker 800WThis product | 4.2 / 5 | 657 | 4.1 / 5 |
| Greater Goods Kitchen Sous Vide MachineGreater Goods | 4.6 / 5 | 1,800 | 4.2 / 5 |
| KitchenBoss Sous Vide Cooker Machine: Ultra-quiet 1100 Watts Sous Vide Precision Cooker…KitchenBoss | 4.5 / 5 | 2,255 | 4.2 / 5 |
| Yedi Infinity Sous Vide CookerYedi Houseware | 4.6 / 5 | 1,350 | 4.2 / 5 |
| Breville Commercial CSV700PSS HydroPro Commercial Grade Sous Vide Immersion CirculatorPolyScience | 4.7 / 5 | 70 | 4.2 / 5 |
Similar sous vide machines from other brands
Questions about the Monoprice 121594
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Monoprice 121594 sous vide have an app?
No, it's controlled entirely from its built-in touch screen, with no Bluetooth or companion app.
What size pot does the Monoprice sous vide fit?
The adjustable clamp fits pots from 2.6 to 4.0 gallons in capacity.
How accurate is the Monoprice 121594's temperature?
One reviewer checked it against a calibrated food thermometer and found it held within about half a degree of the set temperature.