1) The air-heating system in the house kept the rooms warm during the winter.

2) The industrial factory had an efficient air-heating unit to maintain a comfortable working environment.

3) The greenhouse used an air-heating system to regulate temperature for optimal plant growth.

4) The hotel rooms were equipped with individual air-heating controls for guests' comfort.

5) The aircraft hangar had specialized air-heating equipment to prevent condensation on the planes.

6) The office building's air-heating system malfunctioned, causing employees to complain about the cold.

7) The gymnasium installed a new air-heating system to provide better ventilation during workouts.

8) The restaurant invested in energy-efficient air-heating technology to reduce utility costs.

9) The laboratory used precise air-heating devices to maintain controlled conditions for experiments.

10) The sports arena had a powerful air-heating system to ensure spectators stayed warm during events.