Vacuum Wood Kiln Drying
Still struggling with slow drying, cracks, and warping? It’s time to upgrade your process.
Dry Faster
Complete wood drying within a few days
Get Better Quality
Straight, crack-free, high-value wood.
Operate Easily
Fully automatic, easy to manage.
Save Labor Costs
One person can operate, reducing labor costs
Fast & Reliable Kiln Drying for All Wood Types
Drying is the most critical step in woodworking—whether you’re working with valuable hardwoods or softwoods. Traditional kilns often lead to cracking, warping, and wasted materials, reducing both wood quality and profits.
Shuowei Vacuum kilns solve these problems.
With advanced vacuum technology, you can dry any type of wood in just a few days—with excellent moisture control, no defects, and maximum yield. Start producing high-quality lumber faster—and grow your business with confidence.
Choose Your Ideal Kiln Size
Max Length of Wood： 4M
High Frequency：6.78MHz
Input Power：15KVA
Oscillation Power：10KW
Vacuum Pressure：-0.093Mpa
Max Length of Wood： 5M
High Frequency：6.78MHz
Input Power：30KVA
Oscillation Power：20KW
Vacuum Pressure：-0.093Mpa
Max Length of Wood： 6M
High Frequency：6.78MHz
Input Power：40KVA
Oscillation Power：30KW
Vacuum Pressure：-0.093Mpa
Max Length of Wood： 7M
High Frequency：6.78MHz
Input Power：50KVA
Oscillation Power：40KW
Vacuum Pressure：-0.093Mpa
Max Length of Wood： 8M
High Frequency：6.78MHz
Input Power：50KVA
Oscillation Power：40KW
Vacuum Pressure：-0.093Mpa
If you would like to provide me with a drawing of your site and the amount of wood you need to dry per day, I can have our engineers customize a wood kiln to suit you and save you cost.
Advantages of Shuowei Vacuum Kiln
Save Labor, Operate Easily
Once the drying program is set, the kiln runs automatically—no 24/7 monitoring needed. One operator can manage the entire process.
Get High-Quality Lumber
Our high-frequency technology ensures straight, flat boards with bright color and consistent moisture throughout.
Dry Faster, Earn Faster
Shorter drying times mean faster turnaround, improved cash flow, and more profits for your woodworking business.
Environmental friendly
Powered by electricity only—no boiler, no emissions. A cleaner, greener drying solution.
Dry More, Sell More, Grow Faster
Compared to traditional kilns, vacuum wood kiln drying is 8–10× faster.
The faster you turn lumber into finished products, the faster your money comes back.
Better cash flow. Less waste. More room to grow.
See How Much Time & Profit You Can Save. Calculator ROI
How Does It Work?
Unlike traditional kilns that heat from outside-in, our high-frequency vacuum kiln uses electromagnetic energy to heat water inside the wood directly.
This “core-to-surface” drying ensures fast, uniform moisture removal—even in thick slabs—while avoiding cracks and warping.
Key Features:
Low-temperature drying (55°C) avoids defects
Uniform internal moisture distribution
Ideal for hardwood and mixed-thickness lumber
Shuowei Kilns VS Other Vacuum Systems
Most systems use surface heating to dry wood from the outside in. That’s fine for thin boards — but once you load thicker slabs, drying slows down, and worse, the inside stays wet while the outside cracks. To work around this, you have to add heat plates and spacers, which wastes valuable space and limits what you can load.
Shuowei solves this with high-frequency heating — a smarter technology that dries from the inside out. It evenly heats thick or thin slabs without extra accessories, so you get:
Faster, deeper drying (even for slabs over 5” thick)
Mixed-thickness loads in the same batch
No wasted space between boards
To ensure flat, straight lumber, all Shuowei kilns come equipped with a 6-ton hydraulic pressure system, applied throughout the entire drying cycle. This reduces warping and distortion—especially important for high-value hardwoods.
Finally, our motorized timber cart system makes loading and unloading faster and easier, improving overall efficiency for your operation.
wood drying time chart
| location | Wood Species | Wood Size | Wood Density | Initial Moisture Content | Moisture Content After Drying | Vacuum Wood Kiln Drying Time |
|---|---|---|---|---|---|---|
| Bulgaria | Oak Wood | Thickness 75-100 mm Long 1-3 Meters | 0.63-0.79g/cm3 | MC 50% | MC 10% | 8-10 Days |
| New York, USA | Eastern Cottonwood | Thickness70mm Long4000-5000mm Width600-1000mm | 0.386g/cm3 | MC 75% | MC 8% | 4 Days |
| New Zealand | Pinus Radiata | Thickness 50*50 mm Long 2-8 Meters | 0.415 - 0.545 g/cm3 | MC 60%-70% | MC 20% | 4-5 Days |
| Thailand | Burmese Teak | Thickness 25mm | 0.65g/cm3 | MC 18-20% | MC 10-12% | 2 Days |
| Canada | Black Walnut | Thickness 100*120 mm Long 2-3 Meters | 0.63-0.79g/cm3 | MC 50%-60% | MC 18%-20% | 8 Days |
Drying data results
The following are the test results of the wood data dried by our wood drying kiln.
red oak mc test
Mahogan MC test
black walnut wood mc test
Ash wood mc test
American Poplar cm Test
Acacia wood mc test
Customer Praise for SW Wood Dryer Kiln
- The installation engineer of the Mexican customer has many years of experience in the installation of traditional kilns, and he very much recognizes the technology of SW wood drying.
- According to the latest feedback from European customers, the drying is completed in 8 days, and the actual heating time is only 6 days.
Partner Case of Wood Drying Kiln
Vacuum Wood Kiln Installation
Why is it mentioned that the SW vacuum kiln is not only easy to operate but also saves labor costs?
- Because the vacuum kiln adopts a number of automatic technologies, the automatic loading car makes it easier and faster to load the wood into the kiln.
- The high-frequency machine is fully automated, allowing for smooth wood drying without the need for constant personnel supervision when the appropriate instructions are entered.
- We have professional senior engineers who will provide 24/7 online services, not only providing installation manuals but also one-on-one guidance and answering your questions at any time.
- We can go to your factory for installation at any time.
Feel free to subscribe to our YouTube channel for access to kiln tutorials, customer case studies from various regions, valuable customer feedback, and other engaging content whenever you like.
Have more questions please contact us
FAQ
When choosing a kiln for drying lumber, there are several factors to keep in mind. One is the size and type of wood you need to dry, as this will determine how large your kiln needs to be. You should also consider what type of controls you want on your kiln and if you will need to ventilate or insulate the space.
Contact us to recommend the most suitable size kiln for you
Step-By-Step Process:
Kiln drying lumber typically involves the following steps:
1. First, the wood is loaded into the kiln, which will usually be a large chamber with adjustable temperature and humidity controls.
2. Heaters are then used to heat up the air inside the kiln, causing moisture from the wood to evaporate and be removed. This process typically takes several hours, depending on the size and type of wood being dried.
3. Once the desired level of moisture has been reached, the kiln is allowed to cool down slowly in order to prevent cracking or warping as the wood contracts. This process typically takes several days.
4. Once the drying process is complete, the lumber can be removed from the kiln and used for a variety of purposes, depending on its final form and intended use.
Although kiln-drying lumber can be a time-consuming process, it is an important step in ensuring that the wood will retain its shape and color over time. If you are looking for high-quality wood products, it is definitely worth considering using kiln-dried lumber.
A few outcomes you can expect when constructing and assembling woodworking projects using wet lumber include warped wood and ugly broken joints. If you’ve decided to purchase this or bought green lumber to start a new project, You should consider drying the lumber as a crucial element of your woodworking plan.
Before starting any task, you must determine the moisture content in your lumber. With a moisture meter, you should aim at the following levels:
- Exterior wood: A acceptable moisture content ranges from 9 and 14 percent
- Interior wood: A suitable moisture content can range from 6 to 8%
The word “near enough” isn’t enough, especially when using wood for furniture production. Be aware that different kinds of wood differ in density, for instance, hardwood vs. softwood. When you measure the amount of moisture in the lumber piece, you must set your meter to match the type of wood you’re working with.
Improving The Quality Of Wood
One of the greatest advantages of kiln-dried wood is its proven high quality. Kiln-dried lumber is expected to withstand different weather conditions compared to those woods that missed out on undergoing the same process.
Through its process of absorbing moisture into wood products, it prevents the wood from deforming and warping over time, thus maximizing the money spent as well as eliminating the need to worry about the wood’s health during the sweltering summer or frigid winter months.
Extending The Life Of Wood Products
A kiln dried wood has a proven quality that is perfect for all types of conditions. Quality products mean remaining functional through the years. It ensures its longevity and durability for a long period of time without the worry of defects and problems.
Through the utilization of a kiln for drying wood, it gives the lumber product the potential for structural integrity that can be able to withstand any weather circumstances. With that, extending its life for a longer period of time for longer utilization and better value for money.
Kiln Drying Wood Kills Bugs
It is totally inevitable that a piece of wood might contain bugs and eggs inside it, especially for lumber that has been stored for a long period of time. These bugs may cause a lot of damage to lumber and wood, and as a result, might cause you a total headache.
Another benefit of kiln-dried wood is that bugs on wood are reduced.The heating process during wood drying has enough heat to kill these unwanted bugs and eggs that are inside the wood. A great relief, indeed!
We'd like to work with you
If you have any questions or request a quote, please send us a message. Our experts will reply you within 24 hours and help you choose your suitable wood drying kiln, and can also help you solve wood drying problems.
