FAQs
Below are some frequently asked questions about our freeze dryers and freeze drying. If you don't see the answer to your questions, feel free to call us at 208-607-1722.
How does a freeze dryer work?
Freeze dryers are sophisticated machines that utilize the principles of sublimation to remove water from a product. The freeze-drying process typically consists of three main stages: freezing, primary drying, and secondary drying. Read more about it here.
Can all foods be freeze-dried?
The foods that will have the most trouble freeze drying are oil based, like peanut butter.
But you really can freeze dry almost anything. Freeze dry all kinds of fruits and veggies, and try freeze drying family favorite meals like casseroles, rice dishes, chicken, steaks, stews, chili, pastas and more! And don't forget the candy too.
How much can you freeze dry in one batch?
A max load in the medium freeze dryer is 15 pounds, but this could take 2 or even 3 days to dry. A more realistic load is 8-10 pounds for a 24 hour cycle.
Our large model has a max load of 25 pounds, but suited to run at around 16 lbs for a 24 hour cycle. See the product page of the large model to see more of the differences between the two machines.
How long does freeze drying take?
Blue Alpine boasts 20%-50% faster cycle times than our competitors. Most cycle times take between 12-20 hours. With a max load, the process could take 36 hours or longer, though still much faster than the competition.
Candy, however, can dry a lot faster, with skittles drying in as little as 1-2 hours!
What is the shelf life of freeze-dried food?
Freeze-dried food can maintain its quality and freshness for 25+ years when stored in proper conditions, and when using a proper storage tool like a high-quality mylar bag.
Is freeze-dried food always safe to eat?
Freeze drying is great at keeping the integrity and nutrients of the food, but it doesn't kill off bacteria, so make sure to cook raw meats and eggs before consuming.
How long will it be before I get my freeze dryer?
We are currently plowing through our backlog as fast as we can, and the current wait time averages about 6 weeks for the medium model. However, once we are caught up on production, this summer we expect to have a lead time of only a few days. For the large model, any new orders should be ready for shipment around May of this year.
How much power does a freeze dryer use?
The freeze dryer will draw 9-11 amps per hour on average. Depending on prices in your area, the freeze dryer will typically cost about $2.00-$3.00 of electricity per day.
What maintainance is required for a freeze dryer?
We recommend to change the oil in your pump every 5-10 cycles, but it could be less frequent depending on water content of your batches. If you only dry candy for example, the oil could be replaced every 30 cycles.
How much does it cost to operate?
With electricity costs, bags, oxygen absorbers, and oil, a typical load will cost between $4 to $8. This is of course dependent on electricity costs and what kinds of bags are being used.
Is a freeze dryer loud?
A freeze dryer is about as loud as a quiet washing machine or a clothes dryer, around 60db.
Why are freeze dryers so expensive?
Building freeze dryers is a complex and scientific process. This requires some costly parts and engineering. It's almost like shrinking a commercial refrigerator and fitting it into a small box; all of the components are industrial sized instead of home sized. In the future, the freeze dryer market prices could drop if the cost of manufacturing is lowered.
Can you make money with a freeze dryer?
You can make money with a freeze dryer by selling freeze-dried products! Some of our own customers have had success selling freeze dried candy they made from home, and in as little as a few months earned back the money they spent on their freeze dryer.
How much space do I need to keep a freeze dryer?
The dimensions for the medium freeze dryer are 20" x 21" x 30". The large is 24" x 25.5" x 34". You will also need space to open the door, and room to change the oil on the pump.
Will I be able to move the freeze dryer?
The freeze dryers weigh 80 and 100 pounds, respectively, and the pump weighs 30 pounds. They can be slid on flat ground safely or lifted up by two people to move them.
What warranty does the freeze dryer come with?
Our freeze dryers come with a 1 year warranty and a 3 year limited warranty. Read about them here.