I’ve pressure-cooked hundreds of meals in my Instant Pot over the years, but I never touched the “Dehydrate” button until last summer. A glut of tomatoes from my garden forced the issue. Eight hours later, I had sun-dried tomatoes that tasted better than the $10 jars from the Italian market. The Instant Pot’s dehydrate function works—it just works differently than you might expect.
If you’re wondering whether the Instant Pot can replace a dedicated food dehydrator, the honest answer is: probably not completely. But for small batches and specific situations, it’s surprisingly capable. I’ve now logged over 100 hours of dehydration time across the Duo Crisp, Pro, and Pro Plus models. Here’s what actually happens when you press that button.
How the Instant Pot Dehydrate Function Works
The Instant Pot approaches dehydration from a different angle than traditional dehydrators. Instead of horizontal airflow across multiple trays, the Duo Crisp and similar models use the air fryer lid to circulate warm air downward into the cooking pot. The Pro and Pro Plus models extend this capability with more precise temperature control ranging from 80°F to 195°F depending on the specific model.
This vertical airflow design creates distinct advantages and limitations. On the plus side, the compact space heats up quickly and maintains temperature efficiently. I measured preheat times of under 3 minutes to reach 135°F—faster than my Excalibur dehydrator’s 8-minute warmup. The downside? You can only dehydrate what fits in a single layer at the bottom of the pot or on the included air fryer rack.
The heating element sits in the lid, blasting air downward. This means the top surface of your food dries faster than the bottom. I learned this the hard way with my first batch of apple slices—the tops were crispy while the bottoms remained leathery. Now I flip everything halfway through, which solves the issue but adds a step you don’t need with traditional dehydrators.
Use the air fryer basket insert for best results. It elevates food slightly, allowing airflow underneath. Without it, the bottom of your food sits in stagnant air and dries unevenly.
Capacity Reality: Smaller Than You Think
Here’s where expectations meet reality. An 8-quart Instant Pot sounds spacious, but the usable dehydration area is roughly 10 inches in diameter. That’s enough for about 1.5 pounds of sliced apples or 1 pound of cherry tomatoes. Compare that to a 9-tray dehydrator that handles 10-12 pounds simultaneously.
For single-person households or small-batch experimentation, this limitation might be fine. I regularly dehydrate herbs from my windowsill garden—a handful of basil, oregano, and thyme fits perfectly. The small capacity actually works in my favor here because I can run small batches without wasting energy heating a large dehydrator.
However, when my neighbor gave me 20 pounds of pears from her tree, the Instant Pot’s limitation became painfully obvious. I spent five days running constant cycles, swapping batches every 8 hours. A dedicated dehydrator would have finished the job in two batches.
Performance Testing: The Numbers
I ran controlled tests comparing the Instant Pot Duo Crisp against a Nesco Gardenmaster dehydrator using identical foods and slice thicknesses. The results reveal the Instant Pot’s character:
Apple Slices (¼-inch thick): The Instant Pot required 7.5 hours at 135°F, while the Nesco took 8 hours. The Instant Pot actually dried slightly faster due to its aggressive airflow, but required flipping at the 4-hour mark. The Nesco produced more even results without intervention.
Beef Jerky: This is where the Instant Pot surprised me. The intense airflow created excellent texture in just 3.5 hours at 160°F. The Nesco took 5 hours for similar results. However, I could only fit ¾ pound of meat in the Instant Pot versus 3 pounds in the Nesco.
Herbs: The Instant Pot excels here. Basil and parsley dried in 2 hours at 95°F—faster than the Nesco’s 3-hour time. The small capacity doesn’t matter for herbs, and the quick turnaround preserves volatile oils better.
Temperature stability proved solid in my testing. The Duo Crisp maintained ±4°F of the set temperature, while the Pro models showed even better precision at ±2°F. This rivals dedicated dehydrators in the same price range.
The Instant Pot cannot dehydrate and pressure cook simultaneously. If you’re planning to pressure-cook chicken for dinner and dehydrate fruit leather overnight, you’ll need to choose one or wait for the other to finish.
Which Instant Pot Models Dehydrate Best?
Not all Instant Pots include dehydration capability. You need models with the air fryer lid attachment or the newer all-in-one designs.
Duo Crisp + Air Fryer: The entry-level option with basic dehydration (105°F-195°F). Works well but lacks the fine-tuned controls of newer models. The air fryer lid must be swapped for the pressure lid, which takes 30 seconds but adds a step.
Instant Pot Pro: Adds better temperature control and a more powerful heating element. The Pro maintains temperature more consistently in cold kitchens—a real advantage if you dehydrate in winter.
Pro Plus with Smart WiFi: The premium option with app control and more preset options. Honestly, the WiFi feature proves less useful for dehydration than you’d think. Dehydration requires physical presence to check progress and rotate food, so remote monitoring matters less. Save your money unless you want the other smart features.
The Hidden Advantage: Pressure Cook + Dehydrate Combos
Where the Instant Pot truly shines is combining functions. I make homemade yogurt by pressure-cooking the milk first to sterilize it, then using the dehydrate function to maintain 110°F for fermentation. This two-step process would require separate appliances with a traditional setup.
Another winning combination: pressure-cooking tough tomato skins to soften them, then dehydrating the pulp into intensely flavored tomato powder. The ability to pressure-cook ingredients before dehydration opens possibilities that dedicated dehydrators can’t match.
I’ve also used the dehydrate function to proof bread dough (80°F for 45 minutes), make fruit leather from cooked-down fruit compote, and crisp up leftover fries. The “dehydrate” label undersells the function’s versatility.
Cleaning and Maintenance
The stainless steel pot cleans easier than dehydrator trays. After sticky fruits like mango or pineapple, a 10-minute soak removes residue that would require scrubbing on mesh dehydrator trays. The air fryer lid’s heating element requires occasional wiping to remove oil buildup, but this takes 30 seconds.
One annoyance: the air fryer lid is bulky. It doesn’t store inside the pot like the pressure lid, so you need cabinet space for the extra component. If you’re tight on storage, this matters.
Who Should Use the Instant Pot for Dehydration?
Buyers fall into two camps. The Instant Pot dehydrate function suits you if you occasionally preserve small batches, want to experiment before buying a dedicated unit, or value the pressure-cook/dehydrate combo workflow. Herbs, small fruit batches, and jerky for one or two people work great.
You’ll be frustrated if you process garden harvests in bulk, dehydrate for backpacking trips requiring large quantities, or want to set-and-forget overnight without rotating trays. The capacity limitation becomes maddening when you have 50 apples to process.
After eight months of regular use, I keep my Instant Pot for small, quick jobs but bought a Nesco dehydrator for serious preservation. The Instant Pot proved dehydration appeals to me; it just couldn’t scale with my ambitions.
Ready to try it? Start with herbs or a single batch of apple chips. The learning curve is gentle, and you’ll quickly discover whether the limitations matter for your specific needs.
