9 Tray Deluxe Dehydrator
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Sturdy, Reliable Bulk Dehydrator

The Excalibur 3900B is one of the more durable and powerful dehydrators available for its price range. It comes with 9 trays, making it ideal for users who want to dehydrate a lot of food at once. It has a 7-inch fan and 600 watts of heating power, and its side-mounted fan and heating element ensure even drying without manual rotation needed. This model comes with Excalibur Hyperwave Fluctuation technology for more hygienic dehydrating. Its large size makes it difficult to fit into smaller homes or apartments, but it is perfect for large families or heavy users.

Designed for dehydrating in bulk

The Excalibur 3900B includes nine trays and has fifteen square feet of drying space. Large families or anyone who is interested in dehydrating in bulk will appreciate the amount of food that can be dehydrated at one time; that being said, this model is larger than less spacious hydrators, so you will need to be sure you have adequate space in your home before purchasing. For its size, it is surprisingly light, so you can easily move it around your house if need be. The trays are all removable to accommodate bulkier items.

7-inch fan, 600 watts

The Excalibur 3900B includes a 7-inch fan and a 600 watt heating element, which puts it at the average to slightly-above average range for the price point. Both the fan and heating element are strong enough that you won’t need to worry about manually rotating the trays, and dehydrating time is fairly quick.

Adjustable thermostat

There is a thermostat on the Excalibur 3900B which gives you greater control over the dehydrating process. You can control the temperature between 105 to 160 degrees; this is less range than some dehydrators offer, but it covers the temperatures most foods require for dehydrating, including jerky.


Excalibur Hyperwave Fluctuation technology

The Excalibur 3900B utilizes Hyperwave Fluctuation technology to keep your food hygienic and healthy. The typical dehydration process absorbs the surface moisture of food without drawing out the inner moisture, creating an environment ideal for bacteria, mold, and yeast. Excalibur Hyperwave Fluctuation technology prevents this by altering the air temperature within the dehydrator; higher temperatures evaporates the moisture close to the surface of the food, and lower temperatures force the moisture deep within the food to rise to the surface. By fluctuating the air temperature, the Excalibur 3900 B maintains an environment that protects the enzymes within the food while halting growth of mold and yeast. This technology is unique to Excalibur products and cannot be found in similar dehydrators.

Even air distribution

The Excalibur 3900B has a back-mounted fan and heating element; cool air is drawn in and heated in this central location and then pushed evenly over the trays to ensure all your food dehydrates at a constant rate. This is fairly standard for larger models such as the Excalibur 3900B, but smaller, round dehydrators utilize a top-mounted fan that creates uneven distribution and requires you to manually move or rotate the trays during the process.

Removable trays

The removable trays are a boon for anyone who wants to use their dehydrator for bread-making; there is sufficient space to allow for raising dough, including proofing sourdough. It’s also ideal for culturing large quantities of yogurt.


No additional trays

While the Excalibur 3900B is spacious and the nine trays are sufficient for most users, you cannot add any additional trays to this model. It will only fit the nine trays it comes with.

No timer

This unit does not come with a self-timer, leaving it up to you to keep track of how long your food has been dehydrating. It is not uncommon for dehydrators in this price range to not have a timer, and most consumers who desire this feature simply buy a plug-in timer from their local home improvement store.

Overall Review

The Excalibur 3900B is a good fit for anyone with the space to use it; it performs as well as more expensive dehydrators on the market, and outperforms many in terms of space and functionality. It is simple to use and great for large families. Anyone who needs a dehydrator specifically for rising dough or proofing sourdough should consider this model for its ample room and even airflow.