Recessed lighting is a type of illumination source that is installed flush with the surrounding surface. The bulb is placed within the ceiling to become a non-obtrusive and inconspicuous source of illumination. It can blend in with any room since it is almost invisible. It can be used for focused task achievement and for ambient or accentuation purposes. Fixed recessed units are usually used as the primary illumination source in a room while it still allows other fixtures to be installed along with it like sconces, chandeliers, pendants and table lamps and floor lamps.

Ceiling flush units can be used almost anywhere in the house. They can be used in the kitchen, bedroom, bathroom, work areas, living room, hallways, stairwells, swimming pools, and even in cabinets to provide functional illumination only. They can also be installed in bookcases, entertainment centers and in galleries to provide spots to highlight a certain feature or object.

In using them for general illumination purposes, more units are needed to be installed since they often carry low wattage. The places and the distance apart they are installed are usually taken into consideration and given detailed planning by a professional to ensure that they will be optimized. They may be installed in a pattern of curved lines or alternating designs. The rims of the fixtures can also be customized to blend in with the room's design.

Display illumination using these pieces can also be achieved. Using smaller fixtures, you can place it directly over a painting or a table that displays your collection or family pictures. They can also be added to the bottom of a niche or sunken shelf that displays artwork. Some even have the feature to be focused in a certain direction.

They can also be installed beneath kitchen cabinets to illuminate the counter below. This way, the counter will be fully functional for other kitchen activities such as food preparation. It can also be used to point up kitchen wares that are on display such as your chinaware and crystal. Adding recessed illumination to certain areas in a room for task purposes is also helpful.

In choosing to install recessed lighting, one must consider the overall aesthetics, design of the room and the function you want it to perform. Desired effect must be considered when choosing the bulb wattage. Remember that you will be permanently placing holes in your ceiling to accommodate this type of illumination. This is a big decision should you ever want to replace your scheme for illumination. When changing or installing the bulbs, make sure all power sources are switched off to avoid accidents. Always follow the manufacturer instructions and wattage recommendations. Hire a professional (licensed electricians and engineers) in designing your illumination requirements and ensuring you and your house's safety. Wiring and fixture location are major renovations that your house would undertake so make sure to have an estimate of the total cost before having recessed lighting installed.