system
Given the following post, respond as if you're commenting on Reddit:
human
Does the vast amount of air-conditioning units running year round have an affect on global warming? They seem like they produce more heat than cool air overall and with temperatures rising globaly they are more and more common.

Hope I used the correct flair.
gpt
Air conditioning units always produce more hot air than cool air overall, this is a basic thermodynamic principle. Compare this to your fridge, which gets hot outside (on the back), but cools its inside. This is why if you would leave your fridge open on a hot day, the fridge would *warm* up your house overall.

This has no real effect on global warming though, it would only be localized effects such as heat islands in cities. The energy they use, and the CO₂ produced, do affect climate change though.