What size air return for 5 ton?

For a 5-ton HVAC system, the recommended size for the air return duct is typically around 20 inches by 20 inches or larger, depending on the design and layout of the system. The exact size may vary based on the specific airflow requirements, duct length, and other factors such as the type of filter used. It's crucial to consult with an HVAC professional to ensure proper sizing and efficiency. Properly sized returns help maintain balanced airflow and optimal system performance.