This practical tip is motivated by Adelaide, where Stewart Kirby Design is based, having its forth consecutive day with temperatures in the mid-40s. If you have a split-system type refrigerative air conditioning unit, ensure the exhaust air is being directed away from the unit. I commonly see this type of unit installed in narrow walkways at the side of buildings where the exhaust air hits the adjacent fence and essentially bounces back into the air intake of the unit. This leads to the unit operating in much higher temperature air then necessary which adds to energy consumption and reduces performance. Ideally this type of air conditioner should be installed in open space, such as on a roof. However, if your air conditioner is already installed in a confined space, try installing an air deflector, as per the image above. These will need to be fabricated, but, as a temporary fix use materials you have already on hand, such as sheets of plywood, metal, etc and prop them in place. Your air conditioner will be happier and you will be cooler.