Air-conditioning is higher status than no air-conditioning. Higher-status people are more likely to live with air-conditioning; lower-status people are more likely to live without it. Lower-status people will feel more inconvenienced by too much air-conditioning, because it is a greater shock for them. Complaining about too much air-conditioning is an evidence of lower status. People who want to seem higher-status will avoid complaining about air-conditioning (and maybe just dress warmer). If all high-status people agree that the air-conditioning is okay as it is, it will remain as it is, because higher-status people make the decisions.
Some form of signalling?
Air-conditioning is higher status than no air-conditioning. Higher-status people are more likely to live with air-conditioning; lower-status people are more likely to live without it. Lower-status people will feel more inconvenienced by too much air-conditioning, because it is a greater shock for them. Complaining about too much air-conditioning is an evidence of lower status. People who want to seem higher-status will avoid complaining about air-conditioning (and maybe just dress warmer). If all high-status people agree that the air-conditioning is okay as it is, it will remain as it is, because higher-status people make the decisions.