Investments in cooling systems across Bangladesh garment factories pay back capital costs within four years, according to a study released on Sunday. Temperature data collected over a six-month period across eight manufacturing facilities in Dhaka showed that indoor heat stress erased an average of 4.1 per cent of annual factory revenue.

Researchers at Cornell University’s Global Labor Institute found that physical modifications, including reflective roof paint, overhead insulation, and airflow ventilation, are commercially viable. Factory temperatures regularly climbed higher than outdoor readings, with the heaviest thermal load concentrated in pressing, ironing, and finishing lines.

Jason Judd, executive director of the Global Labor Institute, noted that suppliers considering heat mitigation have struggled to weigh upfront spending against operational savings. Over the past year, apparel brands have sought verified payback timetables while discussing mitigation costs, emissions targets, and alternative energy sources with manufacturers.

Apparel brands have spent years negotiating greenhouse gas targets and energy efficiency standards with suppliers. Adding physical climate adaptation to commercial contracts changes the financial equation. It shifts the focus from pure regulatory compliance to protecting factory throughput.

Paying for factory retrofits creates friction between Asian garment manufacturers and Western fashion labels. Factory operators run on thin unit margins. They hesitate to fund facility upgrades without long-term order commitments or higher purchasing prices from international buyers.

A heat resilience toolkit from the American Apparel and Footwear Association recommends that global brands co-fund factory modifications when direct commercial returns fall short of total setup costs. Nate Herman, executive vice president at the trade group, stated that brands must help protect workers across manufacturing networks as extreme heat events become frequent.

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