How do you write a letter about repair of AC to general manager?

Oh, dude, it's like super easy. You just start with a polite greeting, maybe throw in a "Hey there" or a "Hi," then explain the issue with your AC in a casual tone. Mention what needs to be repaired and politely request action. Sign off with a friendly closing like "Thanks for your help" or "Appreciate your assistance." Boom, letter done.