Rare Earth Magnet Recycling Gains Momentum as Japanese Firms Target Air Conditioner Compressors

Daikin

Rare earth magnet recycling is moving into Japan’s commercial air conditioning sector as Daikin Industries, Shin-Etsu Chemical, Hitachi and Tokyo Eco Recycle prepare a joint recovery initiative. The project will recover rare earth magnets from compressors used in commercial air conditioners and return the material to new magnet production.

The companies plan to develop automated recovery equipment in 2026 and start full-scale operations in 2027. Daikin aims to collect around 10,000 compressors a year and eventually recycle several tonnes of rare earth magnets annually.

Rare earth magnet recycling is strategically important because compressors use internal motors that contain neodymium-based magnets. These magnets are essential for high-efficiency air conditioners, electric vehicles, industrial motors and other electrified systems.

The initiative also addresses a gap in Japan’s recycling infrastructure. Daikin said there is currently no established framework in Japan for recovering rare earth magnets from commercial air conditioner compressors.

Compressor Motors Offer a New Urban Mine

Commercial air conditioner compressors are a practical target for rare earth magnet recycling because they are large, identifiable and collected through equipment replacement channels. This makes them easier to trace than many small electronic products.

Daikin will collect used compressors under the scheme. Tokyo Eco Recycle, working with Hitachi, will extract the rare earth magnets from the units. Shin-Etsu Chemical will then use the recovered magnets as raw material for new rare earth magnet production.

This structure creates a closed-loop model. It connects product collection, disassembly, magnet recovery and remanufacturing inside one coordinated supply chain.

The industrial meaning is significant. Japan is trying to recover strategic materials from domestic end-of-life equipment rather than relying only on imported rare earths. This can reduce exposure to supply disruptions and improve material security for manufacturers.

Neodymium magnets are particularly important because they support compact, high-efficiency motors. Air conditioner makers need these motors to reduce energy consumption, while EV and industrial motor producers need them for power density and performance.

The project could also become a model for other equipment categories. If companies can recover magnets efficiently from compressors, similar approaches may be applied to motors, pumps, factory equipment and vehicle components.

Automation and Policy Support Strengthen Japan’s Recycling Model

The companies plan to improve recovery efficiency through automation. AI-based image recognition and robotics will help optimise disassembly processes for different compressor models.

This is important because recycling rare earth magnets is not only a materials issue. It is also a dismantling and sorting problem. Magnet recovery becomes difficult when product designs, motor structures and fastening systems vary across models.

A centralised data system will manage the full process from collection to remanufacturing. This should improve traceability, recovery planning and quality control across the recycling chain.

The policy backdrop is also supportive. Japan’s environment ministry has allocated about ¥37.9bn, or $238mn, in its fiscal 2026 budget to promote recycling of metal resources, including rare metals and rare earths.

This shows that Japan views critical minerals recycling as both an environmental and economic security priority. Recycling reduces waste, but it also lowers dependence on concentrated foreign supply chains.

China still dominates much of the global rare earth supply chain, from mining and separation to metal conversion and magnet production. For Japan, domestic recycling can provide a supplementary source of magnet raw materials and reduce supply risk for strategic industries.

However, the scale will be modest at first. Recycling several tonnes of magnets annually will not replace primary supply. But it can create a repeatable industrial system that grows as collection networks, automation and remanufacturing improve.

The bigger value lies in building capability. Japan is connecting equipment makers, recyclers and magnet producers before supply stress becomes more severe.

The Metalnomist Commentary

Rare earth magnet recycling from compressors shows how industrial equipment can become a strategic materials source. Japan’s advantage will come from turning product traceability, automation and chemical expertise into a scalable recycling loop before rare earth supply risks intensify.