New customer accounts and will call customers can typically expect a delivery in 3-5 business days. Automatic delivery propane customers rest easy knowing that Aero Energy is constantly monitoring the level of their tank and will schedule a delivery when they fall below 30%. Aero Energy relies upon a highly accurate formula based on past usage, number of occupants and weather patterns to ensure that automatic delivery heating oil customers receive timely deliveries. Additionally, Aero Energy offers emergency run-out deliveries for automatic customers.