Can I leave without a 30 day notice to my landlord if he didn't uphold his end of a verbal agreement lease?

Question Details: I moved into this apartment 4 months ago. The landlord and I had no written lease and only a verbal agreement. My only condition for moving in was that the A/C unit be replaced. He assured me that if it is something that needs to be taken care of then he will just have to go ahead and do it. Now, it still has not been replaced and I am moving out. I just now gave him my 30 days notice and told him that I would be moving out mid next month.

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