Modern cooker hoods are equipped with a good exhaust system to ensure the efficient removal of smoky air. The efficiency of an exhaust fan depends on how it is designed. An axial exhaust fan is shaped somewhat like a ceiling fan. It is less expensive than a centrifugal fan, which is more barrel-shaped. Centrifugal fans move more air and are quieter in operation than axial fans. Some higher-end cooker hoods include timers to shut off the fan after a specific amount of time has passed. Lighting is included in most cooker hoods, in the form of one or two incandescent or halogen bulbs. This type of feature adds another light source to a kitchen and can make it easier to see the food under the shadow of the hood itself. Often there are adjustable settings to brighten or dim the lighting, such as for use as a kitchen night-light. High fume collection capacity, ergonomically located controls, cooker lighting with low-energy bulb, effective grease filter, available in several widths as standard, low height which provides plenty of workspace under the hood are some features that make cooker hoods a highly preferred utility in today's kitchens!