Walton is adopting advanced condenser technologies and alternative materials in its refrigerators as the industry moves beyond conventional copper-based cooling systems, according to a company feature article.

The technologies include aluminium, microchannel heat exchangers, zinc-aluminium-magnesium (ZAM)-coated steel and multi-layer protective coatings, which are designed to improve energy efficiency, durability and corrosion resistance, according to a press release.

Microchannel heat exchangers use flat aluminium tubes with multiple tiny channels for refrigerant flow, allowing a compact and lightweight design while maintaining effective heat transfer. The technology can also reduce refrigerant requirements.

ZAM coating provides steel with protection against moisture and corrosion, while additional polymer layers can further shield condenser components from dust, moisture and saline air.

The release said these technologies are particularly relevant in Bangladesh, where high temperatures, humidity, dust and coastal salinity can accelerate corrosion. It added that modern refrigerator performance depends on the integrated design of the condenser, compressor, refrigerant and evaporator rather than condenser material alone.