Abstract: A drain guard is configured to block debris from entering a drain line of an HVAC unit. The guard includes a hollow body having a front side, a first side, a second side, and a back side defining an internal volume. A lip extending outward from a ridge formed at the convergence of the front side and the back side subsequently extends downward and parallel to the back side. The gap made between the back side and the lip may act as a receiving section for a sidewall of a drain pan so that the device may be stabilized. For further stabilization, cutouts are positioned in the back side and lip of the device so that a drain pipe connected to the drain pan may be seamlessly positioned adjacent the device.