The correct spelling of the phrase "wert in air" is actually "were to heir". In IPA phonetic transcription, it would be /wər tə heər/. This phrase means "if you were to become the heir (to a throne or property)". It is important to note that English can be a tricky language when it comes to spelling and pronunciation, and it is always best to double-check the spelling and meaning of unfamiliar words or phrases.