Proper ventilation is crucial for ensuring your jobsite has healthy, clean air. Typical venting requirements ask that vent terminals be at least 1 foot from any door, window or inlet to the building and that the bottom of the vent terminal be at least 3 feet above any forced air inlet located within 10 feet. However, as efficiency standards increase, there are more special venting requirements for HVAC equipment that are designed to ensure optimal operation, sustainability and customer satisfaction. Venting can be complex, often involving specific maximum and minimum vent and air intake lengths.