The main benefit of an air conditioning system is that it allows you to keep your building at a comfortable temperature no matter what kind of weather you’re having. In your own home, a good air conditioning system allows you to enjoy whatever activities you like, without feeling uncomfortably hot or cold.
Being in a cool environment is beneficial to people with heart or lung disorders because overheating puts you at risk of heart attacks and breathing difficulties. People with allergies usually also benefit from being in an air-conditioned building. If a building like a home (or a hotel or guesthouse) is too hot, the occupants may have difficulty sleeping, or just sleep less well – so air conditioning in these places could make everybody feel much better.
People are more likely to go into buildings (shops, restaurants etc.) when the temperature inside is comfortable – and once they have gone into a building, those people are likely to spend their money. Workers are likely to be more productive when they are working in a comfortable environment, and they are more likely to get sick if the quality of the air in a building is poor.