Japan's 'Human Refrigerator' Is Designed to Beat Extreme Heat. Here's How It Works

As global temperatures continue to rise, countries are looking for new ways to protect people from extreme heat. Japan, known for its innovative technology, has introduced a unique solution called the Human Refrigerator to help people cool down quickly after spending time outdoors.

The invention comes as heatwaves become more frequent across the world, affecting not only daily life but also the way people travel. Many tourists are now avoiding afternoon sightseeing and choosing cooler hours or different seasons for their trips.

What Is Japan's Human Refrigerator?

The cooling booth, officially known as the Do Hiemon Box, has been developed by Japanese refrigeration company SDRS. Standing about 2.1 metres tall, the booth looks similar to a large stainless-steel vending machine.

People can simply step inside, sit down, and spend around 10 minutes in the chamber, where the temperature is maintained at approximately 15°C. The cool air helps lower body temperature much faster than using a fan or even a regular air conditioner, according to the manufacturer.

Why Japan Introduced It

Japan has been experiencing increasingly severe summers, with temperatures crossing 40°C in several regions. In 2026, the Japan Meteorological Agency introduced the term Extreme Heat Day for forecasts predicting temperatures of 40°C or above, highlighting the growing impact of climate change. The cooling booth has been designed to reduce the risk of heat exhaustion and heatstroke, especially for people working outdoors.

Where Is It Being Used?

At present, the Do Hiemon Box is mainly being used at:

• Construction sites
• Warehouses
• Factories

The unit costs around 1.5 million yen (approximately ₹8.8-9 lakh) and features wheels, making it easy to move between locations. Despite its price, the manufacturer says its operating costs are relatively low.

Could Tourists Use It in the Future?

Although the cooling booth is not yet available for tourists, experts believe similar units could eventually be installed at busy public places, including:

• Railway stations
• Airports
• Theme parks
• Popular temples and shrines
• Marathon events
• Summer festivals
• Tourist attractions

Such cooling stations could provide much-needed relief for travellers exploring Japan during the hot summer months.

Climate Change Is Reshaping Travel

Extreme heat is becoming one of the biggest challenges for global tourism. Across Asia, Europe, and North America, travellers are changing their schedules to avoid peak afternoon temperatures and are increasingly planning vacations during cooler seasons. apan's latest innovation reflects how countries are adapting to climate change with practical solutions. If successful, the Human Refrigerator could become a common feature in public spaces and inspire similar technologies around the world.