We recently had custom base cabinets installed in our home. Some of the cabinets were placed on top of the floor heat vents. To get the heat out into the room, the installer cut in heat vents into the toe kick area of the cabinets. Well, this has become so inefficient. There is some heat coming out of the toe kick area, but the majority of the heat is still being retained under the base cabinet. Is there anything we can do to better vent out the heat into the room? We have a gas forced air furnace. The only thing I am doing now is leaving the base cabinets doors open.