Cook bacon in a large skillet over medium heat until browned and crisp.
Drain cooked bacon on a paper towel lined plate. Crumble 4 strips and reserve remaining strips to top each burger.
In a mixing bowl combine the cooked crumbled bacon, Ranch seasoning mix, and shredded cheddar cheese.
Form seasoned beef into three ⅓ pound patties.
Place patties on air fryer grate. Make sure to leave space between each patty for air to circulate.
Air fry patties for 8 minutes at 400℉.
Cook patties to an internal temperature of 145-155℉.
Remove patties from the air fryer and top each one with sliced cheddar cheese.
Return patties to the air fryer and cook for an additional 2 minutes or until cheese has melted.
Serve on toasted buns topped with Ranch dressing, sliced bacon, lettuce, sliced tomato, and red onion, plus your favorite burger condiments.