Making tempeh at home is a rewarding process, but it hinges on one critical factor: maintaining a steady temperature around 31°C (88°F) for 24 to 48 hours. A dedicated incubator removes the guesswork, giving your tempeh the warm, humid environment it needs to ferment evenly and develop that signature nutty flavor.
In this guide, we review ten versatile incubators that can handle tempeh and much more—from dough proofing to yogurt making. Whether you are a beginner or a seasoned fermenter, you will find the right tool to bring your tempeh game to the next level.
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Multi-Function 40L Food Fermentation Incubator | Digital Dough & Yogurt Pro…
Best forLarge batches and multi-purpose ferment…
- Precise temperature and humidity control
- Spacious 40L capacity
ConsiderMay be large for small kitchens
Benchmark My Temp Mini Incubator Digital CO2 and Temperature Control
Best forPrecision fermentation with CO2 control
- Digital CO2 and temperature control
- Compact footprint
ConsiderHigher cost
IVYX Scientific 5L Incubator – Precise Temperature Control from 0°C to +55°…
Best forSmall batches and dual heating/cooling
- Heats and cools
- Compact and lightweight
ConsiderSmall capacity
MATICOOPX 30 Egg Incubator with Humidity Display, Egg Candler, Automatic Eg…
Best forDual use for eggs and tempeh
- Stable temperature with strong fan
- External water refill
ConsiderEgg turner not needed for tempeh
18 Egg Incubators for Hatching Eggs, Automatic Egg Turning and Humidity Con…
Best forSmall to medium tempeh batches
- Precision temperature control
- Auto-regulated humidity
ConsiderEgg-specific features unnecessary
Incubators for Hatching Eggs – 60 Egg Incubator Setter & Hatcher with Autom…
Best forMedium capacity with advanced airflow
- Active Periodic Cooling technology
- Digital humidity control
ConsiderEgg turners not needed for tempeh
Incubators for Hatching Eggs – 120 Egg Incubator Setter & Hatcher with Auto…
Best forLarger home tempeh production
- High capacity (120 eggs)
- Advanced ventilation
ConsiderBulky footprint
Incubators for Hatching Eggs – 180 Egg Incubator Setter & Hatcher with Auto…
Best forBulk tempeh fermentation
- Very large capacity
- Robust ventilation system
ConsiderTakes up significant space
IncuTherm™ Plus Digital Thermometer and Hygrometer for Egg Incubator
Best forMonitoring any incubator environment
- Remote probe for easy monitoring
- Min/max memory tracking
ConsiderNot an incubator itself
KEBONNIXS 12 Egg Incubator with Humidity Display, Egg Candler, Automatic Eg…
Best forBeginners and small batches
- Compact size
- Built-in humidity display
ConsiderSmall capacity
ZJLZJLO 40L Fermentation Incubator – Versatile and Precise
Brand: ZJLZJLO
A versatile, high-capacity incubator ideal for serious tempeh enthusiasts.
The ZJLZJLO 40L Food Fermentation Incubator is a powerhouse for tempeh makers who also love baking. Its dual digital displays let you set temperature from 20°C to 50°C and humidity from 60% to 90%, giving you exact control over the fermentation environment. The advanced sensors maintain stable conditions, so your tempeh ferments consistently batch after batch.
With a spacious 40L capacity, you can ferment multiple trays of tempeh at once, or switch to proofing sourdough, natto, or even curing soap. The user-friendly interface and energy-efficient design make it a practical choice for serious home fermenters. If you want a multi-purpose machine that excels at tempeh, this is it.
- Precise temperature and humidity control
- Spacious 40L capacity
- Energy-efficient with dual displays
- May be large for small kitchens
- Higher price point
Benchmark My Temp Mini Incubator – Compact CO2 Control
Brand: Benchmark Scientific
A precise, compact incubator for those who demand lab-grade control.
The Benchmark My Temp Mini Incubator is a professional-grade option for those who need precise CO2 and temperature control. Its digital controls allow you to fine-tune conditions, which is excellent if you experiment with different fermentation profiles. The compact 20L footprint fits neatly on a countertop while still accommodating bottles and flasks up to 2L.
Two stainless steel shelves provide ample space for multiple tempeh trays. This incubator is built for lab-like precision, making it a favorite among science-minded fermenters. If you value accuracy and are willing to invest in quality, this mini incubator delivers outstanding results for tempeh and other cultured foods.
- Digital CO2 and temperature control
- Compact footprint
- Accepts flasks up to 2L
- Higher cost
- Limited capacity for large batches
IVYX Scientific 5L Incubator – Heat and Cool Flexibility
Brand: IVYX Scientific
A flexible, compact incubator perfect for small-scale tempeh projects.
The IVYX Scientific 5L Incubator stands out because it can both heat and cool, making it incredibly versatile. You can set it from 0°C to 55°C in 1°C increments, which means you can use it as a warm incubator for tempeh or as a refrigerator for other projects. The temperature fluctuation is minimal—only 0.5°C on the same shelf—ensuring even fermentation.
Its small footprint (8x11x12 inches) and light weight (9 lbs) make it perfect for tight spaces. The 5L capacity is ideal for small batches of tempeh, sourdough starter, or yogurt. If you want a flexible, space-saving incubator that can also cool, this is a smart choice.
- Heats and cools
- Compact and lightweight
- Precise temperature increments
- Small capacity
- No humidity control
MATICOOPX 30 Egg Incubator – Reliable Temperature and Humidity
Brand: MATICOOPX
A dependable incubator that doubles for egg hatching and tempeh fermentation.
The MATICOOPX 30 Egg Incubator is designed for hatching eggs, but its stable temperature and humidity control make it a great tempeh incubator too. The circulating airflow system driven by a strong fan ensures even heat distribution, which is crucial for consistent tempeh fermentation. The external water refilling feature lets you add moisture without opening the lid, preventing temperature drops.
It includes a built-in egg candler and automatic egg turner, but you can simply ignore these features for tempeh. The humidity display is a bonus, helping you monitor conditions at a glance. If you want a reliable, budget-friendly incubator that works for both eggs and tempeh, this is a solid option.
- Stable temperature with strong fan
- External water refill
- Built-in humidity display
- Egg turner not needed for tempeh
- Limited temperature range
Onsju 18 Egg Incubator – Smart Turning and Humidity Control
Brand: Onsju
A quiet, precise incubator ideal for consistent tempeh fermentation.
The Onsju 18 Egg Incubator offers professional-grade temperature accuracy, making it a reliable choice for tempeh. Its advanced airflow system with silent fans maintains uniform heat, while the auto-regulated humidity system keeps moisture levels ideal without constant attention. The sealed construction prevents outside interference, ensuring a stable environment.
You can customize the turning interval (60, 120, or 180 minutes) and the system pauses automatically before hatching—features you can ignore for tempeh. The high-intensity LED candling light is a nice extra, but the real value is the precise environmental control. For small to medium tempeh batches, this incubator performs admirably.
- Precision temperature control
- Auto-regulated humidity
- Silent operation
- Egg-specific features unnecessary
- Smaller capacity
Hatching Time 60 Egg Incubator – Setter and Hatcher Combo
Brand: Hatching Time
A feature-rich incubator that excels at both hatching and tempeh.
The Hatching Time 60 Egg Incubator is a compact setter and hatcher, but its features translate well to tempeh making. It uses Active Periodic Cooling (APC) technology to mimic natural conditions, which can also help regulate temperature during long fermentations. The Conturn 30 precision turners are vibration-free, and while they are for eggs, they show the build quality.
The AirRoute ventilation system and digital humidity control provide excellent airflow and moisture management—both essential for tempeh. With a 60-egg capacity, you have plenty of room for multiple trays. If you want a robust incubator that can handle both hatching and fermentation, this is a versatile pick.
- Active Periodic Cooling technology
- Digital humidity control
- Vibration-free turners
- Egg turners not needed for tempeh
- May be overkill for small batches
Hatching Time 120 Egg Incubator – Medium Capacity Pro
Brand: Hatching Time
A spacious, professional incubator for serious tempeh makers.
The Hatching Time 120 Egg Incubator is a step up in capacity, making it perfect for larger tempeh operations. It retains the APC technology and Conturn 30 turners, but the bigger size means you can ferment more trays simultaneously. The AirRoute ventilation system ensures even airflow, which is key to avoiding hot spots.
Digital humidity control lets you fine-tune moisture levels, and the medium capacity is ideal for serious home fermenters or small businesses. While the egg-specific features are irrelevant for tempeh, the overall build and environmental control are top-notch. If you need more space without going industrial, this is a great middle ground.
- High capacity (120 eggs)
- Advanced ventilation
- Precise humidity control
- Bulky footprint
- Egg features unnecessary
Hatching Time 180 Egg Incubator – Large Capacity Workhorse
Brand: Hatching Time
A high-capacity incubator for those who need to ferment tempeh in bulk.
The Hatching Time 180 Egg Incubator is the largest in this lineup, offering a high-capacity solution for those who ferment tempeh in bulk. It features the same APC technology and Conturn 30 turners, but with room for up to 180 eggs, you can scale up your production significantly. The AirRoute ventilation system is IP-rated, ensuring durability and consistent airflow.
Digital humidity control and automatic turning are standard, but for tempeh, you will appreciate the stable environment and even heat distribution. This incubator is a workhorse for small-scale commercial use or dedicated hobbyists. If space and budget allow, this is the ultimate tempeh incubator.
- Very large capacity
- Robust ventilation system
- Consistent environmental control
- Takes up significant space
- Expensive
IncuTherm Plus Thermometer/Hygrometer – Essential Monitoring Tool
Brand: Incubator Warehouse
A reliable monitoring tool to ensure perfect tempeh conditions.
While not an incubator itself, the IncuTherm Plus Digital Thermometer and Hygrometer is an essential accessory for any tempeh maker. Its remote probe lets you monitor temperature and humidity inside your incubator without opening the door, preserving the environment. The large digital display is easy to read from a distance, and the min/max memory tracks fluctuations over time.
This device is invaluable for verifying that your incubator maintains the right conditions for tempeh. It works with any setup, from a DIY cooler to a commercial unit. If you want peace of mind and precise data, this affordable tool is a must-have.
- Remote probe for easy monitoring
- Min/max memory tracking
- Large, clear display
- Not an incubator itself
- Requires separate incubator
KEBONNIXS 12 Egg Incubator – Compact and User-Friendly
Brand: KEBONNIXS
A simple, affordable incubator ideal for starting your tempeh journey.
The KEBONNIXS 12 Egg Incubator is a compact, budget-friendly option for small tempeh batches. Its induced airflow system with a strong circulating fan ensures stable temperature distribution, which is crucial for even fermentation. The built-in humidity display means you do not need a separate hygrometer, simplifying the process.
Easy water filling from the outside prevents temperature fluctuations, and the built-in egg candler is a nice extra. While the 12-egg capacity is small, it is perfect for beginners or those with limited space. If you want a simple, effective incubator for occasional tempeh making, this is a great entry point.
- Compact size
- Built-in humidity display
- Easy water filling
- Small capacity
- Limited temperature range
Buyer’s Guide: What to Consider
Choosing the right tempeh incubator depends on your batch size, budget, and desired features. Here are five key factors to consider before making a purchase.
- Temperature Control: Tempeh ferments best at around 31°C (88°F). Look for an incubator with precise temperature control, ideally with a digital display and minimal fluctuation. Some models offer a range from 0°C to 55°C, giving you flexibility for other ferments.
- Humidity Management: Humidity is important to prevent the tempeh from drying out. Incubators with humidity displays or auto-regulated systems are ideal. If your model lacks humidity control, you can place a pan of water inside, but a built-in system is more convenient.
- Capacity: Consider how much tempeh you plan to make. Small incubators (5-12L) are perfect for personal use, while larger models (40L+) allow you to ferment multiple trays at once. Match the capacity to your batch size and available space.
- Airflow and Ventilation: Good airflow ensures even temperature distribution and prevents hot spots. Look for incubators with built-in fans or ventilation systems. This is especially important for larger units where temperature gradients can occur.
- Ease of Use: Features like digital displays, external water refills, and programmable settings make the process easier. Some incubators also have dual-purpose functions, such as egg turning, which may be unnecessary for tempeh but add versatility. Choose a model that fits your skill level and needs.
Conclusion
Finding the best tempeh incubator comes down to your specific needs. For large batches and versatility, the ZJLZJLO 40L is a standout. If you prefer precision and compactness, the IVYX Scientific 5L offers unique heating and cooling. Beginners will appreciate the KEBONNIXS 12 for its simplicity.
Remember, a stable temperature and adequate humidity are the keys to perfect tempeh. Whichever model you choose, pair it with a reliable thermometer like the IncuTherm Plus to ensure consistent results. Happy fermenting.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
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