- 冷气机 lěngqìjī air conditioneran electric appliance used to lower indoor temperatures and regulate humidity; also known as [[冷气|冷氣|leng3 qi4]]
- 冷气团 lěngqìtuán cold air massA large body of air moving across the Earth's surface that is colder than the ground it travels over; often originating in polar regions, it causes local temperatures to drop.
- 冷气设备 lěngqìshèbèi refrigeration equipmentrefrigeration or air-conditioning facilities; equipment used to lower indoor temperatures, including units like freezers, air filters, and blowers
- 冷气旋 lěngqìxuán cold cyclonecyclone or low-pressure area where the air temperature at the center is lower than its surroundings
- 冷气房 lěngqìfáng air-conditioned roomAn enclosed room or space equipped with air conditioning
- 冷气衫 lěngqìshān warm clothingwarm clothes such as a padded jacket or cardigan worn to stay warm in air-conditioned environments, used especially in Hong Kong