How can I ensure that my HVAC system’s drain line is properly sloped to prevent water accumulation?

To ensure that your HVAC system’s drain line is properly sloped, check the manufacturer’s recommendations and local regulations for specific guidelines. As a general rule, the drain line should be sloped at a minimum of 1/4 inch per foot to ensure proper water flow. You can use a level and a string to check the slope of the drain line, and make adjustments as necessary. Additionally, ensuring that the drain pan is properly installed and level can also help prevent water accumulation.