Forget fans and portable air con — this Japanese human refrigerator could be the ultimate in heatwave relief and promises to chill you down to 41F

So it's come to this: a portable cooling box for use in warehouses, on construction sites, and on campuses.

Do Hiemon Box

  • The Do Hiemon Box will cool you down for 20 minutes
  • It blasts air on you at temperatures of 5°C or 41°F
  • The units are being sold to construction sites and golf courses

If you're in Japan, you have an alternative to air conditioning units and portable fans when it comes to staying cool in sweltering temperatures: a human-sized refrigerator that you can sit inside when the heatwaves get too much.

This is the Do Hiemon Box from Trusco Nakayama (via The Japan Times), and it'll blast your body with air cooled down to a refreshing 5°C or 41°F — about the same temperature as a chiller in a standard refrigerator.

It requires no installation, can be moved on wheels, and according to Trusco Nakayama it beats other solutions by cooling the entire body down evenly. After 20 minutes, the unit automatically switches off to prevent overcooling, and you're back out into the heat.

As per The Japan Times, a couple of hundred of these units have been sold across construction sites, golf courses, leisure facilities, and university campuses since the chamber went on sale earlier this year.

It'll cost you

You need a standard electrical outlet for this to work, and you also need access to the 1.5 million yen it costs (that's about $9,480 / £7,040 / AU$13,460). These personal cooling machines don't exactly come cheap.

The idea is that you get quick, temporary protection against heat exhaustion and heatstroke — a growing problem in our warming world — rather than using this as an air conditioned office or a space to relax in.

According to a Trusco Nakayama executive speaking to The Japan Times, enquiries about the fridge have come from as far afield as Germany and the US. The company is hoping to find more business at summer festivals and shopping malls.

Sign up for breaking news, reviews, opinion, top tech deals, and more.

Before long you might find yourself queuing up for a slot in the human fridge as well as for the loos at your next festival trip — another depressing sign of the consequences of climate change that show no signs of being reversed.

Google logo on a black background next to text reading 'Click to follow TechRadar'

Follow TechRadar on Google News and

add us as a preferred sourceto get our expert news, reviews, and opinion in your feeds.

An Apple MacBook Air against a white background

➡️ Read our full guide to the best laptops1. Best overall:

Apple MacBook Air 13-inch M52. Best budget:

Apple MacBook Neo3. Best Windows 11 laptop

Microsoft Surface Laptop 13-inch4. Best thin and light:

Lenovo Yoga Slim 9i5. Best Ultrabook

Asus Zenbook S 16

David Nield

Dave is a freelance tech journalist who has been writing about gadgets, apps and the web for more than two decades. Based out of Stockport, England, on TechRadar you'll find him covering news, features and reviews, particularly for phones, tablets and wearables. Working to ensure our breaking news coverage is the best in the business over weekends, David also has bylines at Gizmodo, T3, PopSci and a few other places besides, as well as being many years editing the likes of PC Explorer and The Hardware Handbook.

You must confirm your public display name before commenting

Please logout and then login again, you will then be prompted to enter your display name.