Westeria is a German manufacturer of windsifting and conveying technology specifically designed for the Waste-to-Energy and recycling industry. The patented windsifting solution from Westeria – the technological leader – allows the separation of heavy fraction (contaminates) from the light fraction in one easy step.

Typically, these machines are installed in Waste-to-Energy applications after pre-shredding, screening, and ferrous metal removal steps to separate the high BTU value material from contaminants like rock, gravel, and nonferrous material, etc.
To increase the value of recycled materials and/or high BTU levels in fuel, Westeria offers a wide range of designs that can separate materials into 2, 3 or even 4 different fractions.
Westeria windsifting equipment can be found in over 500 installations worldwide. The unique design allows for a very compact machine with low energy consumption.
Westeria offers stationary, semi-mobile, and mobile configurations of the windsifter in many different sizes. They are used in different fields of applications like:
STATIC WINDSIFTERS
WINDSIFTER AirStar® evolution
The AirStar evolution sets new standards in terms of efficiency, precision and user-friendliness. It combines the latest innovations with Westeria’s decades of expertise in the field of wind sifting.
The entire design of the machine has been redeveloped from scratch and now allows even better access to all components. The large-area glazing allows for easy visual inspection. Despite its compact design, this windsifter remains one of the most robust and efficient systems on the market.
The air management system for perfect separation results
The introduction of the AirStar evolution marks a turning point in air separator technology, particularly with the innovative NotusAir air separation system. This system represents the pinnacle of precision engineering, developed to achieve unrivaled separation efficiency. NotusAir is characterized by its tailor-made components and intelligent design, which is based on precise control of the air flow to enable optimum separation results.

- 1Adjustable fan
The fan allows precise control of the air speed. The frequency control reduces energy consumption by over 30% compared to conventional air throttle valves and minimizes noise pollution at the same time. - 2Extra wide nozzle
NotusAir’s enlarged nozzle opening enables a wider and more even air flow, which contributes significantly to improving separation quality. - 3Optimized air guidance system
Carefully coordinated components in the AirStar evolution ensure that the air flow is directed into the lightweight chamber. Safe air recirculation is possible with a specially designed exhaust hood. - 4Central automatic parameter setting
A combination of horizontally movable separating drum and vertically adjustable feed belt, supplemented by adjustment of the nozzle angle and pressure control, enables highly precise adjustment of the separation process without the use of tools.

WINDSIFTER AirLift®
The AirLift separates what previously could not be separated. Materials with very similar specific densities are its specialty. This air classifier also ensures maximum efficiency when used upstream of the NIR classifier.
Air classifiers are a core element of systems for separating components of different weights contained in waste streams. Westeria’s AirLift vacuum air classifier is a particularly effective design.
The ultra-light separator enables sorting processes in which the specific weights and ballistic flight properties of the respective constituents differ only slightly. Applications include, for example, the recycling of PET bottles, where the valuable PET fraction can be cleaned with high efficiency and purity from light impurities such as labels made of PE film or paper. The AirLift also masters the great challenge of freeing compost from plastic contaminants outstandingly.
Advantages:
Higher efficiency than normal over band suction systems
MOBILE WINDSIFTERS
WINDSIFTER AirBasic®
The AirBasic brings the advantages of Westeria’s proven windsifting technology to a small, mobile machine. It is available in various options to ensure optimum separation results at any site. The material can be fed from any direction (180°). The AirBasic features a patented adjustable and precise nozzle system that works much more efficiently than comparable products on the market.
Wherever waste of various kinds, such as construction waste, compost, household waste, slag, or even scrap is separated, the AirBasic shows its full capabilities.
Advantages:
WINDSIFTER AirLift® move
Free from all impurities – more flexible than ever before!
Now also mobile! Westeria’s proven technology of the AirLift windsifter is now more flexible than ever. The AirLift move brings effective separation to any location. The ultra-light separator is already widely used as a stand-alone version for the removal of impurities. Materials with similar specific densities are easily separated by the unit. For compost processors, the AirLift move, therefore, enables the effective and efficient removal of films from the valuable organic material.
Advantages
Performance Specs at a Glance
| Feature | AirStar® Evolution | AirLift® | AirBasic® | AirLift® Move |
|---|---|---|---|---|
| Configuration | Stationary | Stationary | Mobile | Mobile |
| Specialization | High-efficiency separation of light/heavy fractions | Ultra-light impurities (labels, film) | Compact, flexible setup, modular, energy saving | Portable, for compost and film removal |
| Purity Level | Up to 98% | Up to 99% | Up to 98% | Up to 99% |
| Max Flow Rate | 400 m3/h | 320 m³/h | Varies | 100 m³/h |
| Applications | MSW, RDF, MRF, PRF, Household, Plastics, wood waste, scrap, minerals, compost | PET, compost, | C&D, household, scrap, compost, wood | Compost, organics |


