YORK AC unit rusted support arm
I'm thinking you'd be alright the way it is. An easy fix would be to go to your home store and find the rack where they have pieces of steel in various lengths and pick up a piece 1/8&quot; by 1&quot; by 36&quot; or whatever size is appropriate for your unit. Attach it underneath that top corner lip and wedge it into the concrete by the bottom lip. The bottom lip looks pretty corroded so no sense in trying to attach it there but a tight fit against the concrete should hold it firm. Spray it with some Rust-oleum that's a close match and you're good to go.