Heat sustainable

[Xinfu]

What adjective would you use to depict a person who feels comfortable even in high temperature environments, such as Thais and Sahara Desert people? And people who can dispense with air-cons in the summer.

??He is very heat sustainable??

Are there better expressions?

[Rusty]

heat tolerant
tolerant to the heat

The heat doesn't bother him.
He tolerates the heat.

heat acclimated
acclimated to the heat

He is acclimatized to the heat.

[Xinfu]

Thank you~