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4.5
I've used several dehydrators over the past 35 years, including a home-built unit, and this Excaliber unit is by far the best I've ever used, although it has one annoying feature (see below). It is a true no-nonsense, workhorse design that gets the job done. You remove the side cover—which hangs from the top edge—slide out the trays, load them up with food, slide them back in, replace the cover, and set the thermostat. The internal fan moves air efficiently through the unit at the same rate, regardless of thermostat setting (i.e., fan speed does not vary).The sideways air flow design is a MUCH improved approach over vertical flow designs for the simple reason that moist air exits sideways from each separate tray, rather than transferring moist air from one tray vertically to the next, and the next, etc., which takes longer because it is not efficient. Thus, the Excaliber is a workhorse that can dry more food faster while using less energy. Using this unit, you can dry at least two to three times more food than the smaller, vertically stacked, round designs sold in stores. (I've bought and used a number of these cheaper units over the years, and none of them worked particularly well. My last one melted itself!)The basic unit does not feature a built-in timer, which is not a problem. We usually set our dehydrator up at night, right before we go to bed, and turn it off in the morning when we get up, which is typically about how long it takes to dry a load of food. We have also plugged it into a standard, wall-type timer such as are used for lamps, and that works just as well. In fact, a standard wall timer is actually better since you can set up a schedule of on-off drying periods of varying duration.It is helpful to rotate trays 180 degrees midway through each drying cycle to get the most even drying. This helps with thicker-sliced food, whereas thin-sliced food will dry fairly evenly without rotation. Thick-sliced food toward the rear of each tray will generally dry faster than food toward the front.The ONLY annoyance of this unit is that it is loud. The ample fan, which is mounted to the center of a sheet metal rear panel, sets up a resonance with the panel, sort of like the way a National steel guitar uses its metal back as a resonator. While the fan is running—which is continuously whenever the thermostat is turned up from the "Off" position—the Excaliber emits a loud, resonate hum. If you locate the Excaliber in a separate area of your home, in a garage or laundry space, for example, it won't be any bother at all. But if you live in a small apartment and have to sleep next to it, this might be a bother. Hopefully, future designs will employ dampening washers on the rear sheet metal panel and/or a spring tensioner to absorb vibration from the fan motor.Overall, all things being equal, this is the best dehydrator I've ever owned. And because it works so well, I actually find myself drying more food than ever. I would recommend this Excaliber unit to anyone who wants a reliable, no-nonsense design that gets it done.