What Are the Lights in the Ceiling Called?

The Short Version

• Recessed lights (can lights or pot lights): Circular fixtures set directly inside holes cut into the drywall, sitting completely flat against the ceiling.
• Flush mount lights (dome lights): Fixtures mounted flat against the ceiling surface without any open space between the glass or shade and the drywall.
• Semi-flush mount lights: Fixtures that hang down a few inches on a short stem, leaving a visible gap of air between the fixture and the ceiling.
• Pendants, chandeliers, and track lights: Fixtures that suspend down into the room on cords, chains, or metal rods, or run along an adjustable track rail.

Lights Hidden Inside the Ceiling: Recessed, Can, and Pot Lights

If you look up and see a round glass lens or an open circular opening tucked up inside the drywall, you are looking at a recessed light. This is by far the most common type of ceiling light in modern kitchens, living rooms, and finished basements. Because the fixture sits up inside the ceiling cavity rather than hanging below it, it keeps the room looking open and uncluttered.

People use several everyday names for this style of light depending on where they live and who they are talking to:

• Can lights: This is the most common nickname in the United States. It comes from the metal can (the metal housing container hidden above the ceiling drywall) that holds the light socket and wiring out of sight.
• Pot lights: This is the standard term used across Canada and parts of the United Kingdom. It describes the deep, pot-shaped hole the fixture creates in the ceiling.
• Downlights: This is the term electricians and architects often use on building plans. It describes the focused cone of light that shines straight downward toward the floor.

A traditional recessed fixture has two separate pieces that you see and handle. The first part is the outer ring (the trim), which is the flat plastic or metal collar that covers the rough drywall gap around the ceiling hole. The second part is the interior bulb or reflector. Older setups use a standard screw-in bulb base (E26 medium base) that twists into a socket deep inside the can. Newer installations often use an all-in-one trim piece that snaps into place with spring clips, holding a built-in LED that cannot be unscrewed like an old lightbulb.

You might also have ultra-thin wafer lights. These look identical to traditional can lights from below, but they do not use a bulky metal can above the drywall. Instead, a slim disc roughly half an inch thick clips directly to the ceiling board, connecting to a small remote electrical box tucked out of sight in the ceiling space. If your fixture is completely flat, has no deep hollow cavity, and pulls straight down with two wire spring clips, you have a wafer downlight.

Lights Mounted Flat Against the Ceiling: Flush and Semi-Flush Mounts

Not every ceiling light hides inside the ceiling cavity. When a fixture attaches directly below the drywall to a hardwired fixture electrical box (an enclosure hidden in the ceiling that holds wiring), it falls into the surface-mount family. These are the workhorse fixtures found in entryways, bedrooms, hallways, and laundry rooms.

The two main styles differ by how far down they drop from the drywall:

• Flush mount: This fixture is mounted flat against the ceiling with zero gap above it. The base attaches tight to the ceiling surface, and a glass bowl, drum shade, or plastic lens covers the bulbs below. Many renters and homeowners playfully call the classic center-finial glass version a boob light. Modern flush mounts also come in drum shapes wrapped in fabric or sleek metallic rings.
• Semi-flush mount: This fixture is hanging down a few inches on a short stem or mini downrod. It has a flat ceiling canopy, a metal rod dropping roughly 4 to 12 inches, and then the shade or light cluster below. This leaves an open pocket of air between the top of the fixture and the ceiling drywall.

The difference between these two matters when you shop for a replacement. A flush mount is best for standard eight-foot ceilings because it stays high enough that tall people, raised arms, and opening closet doors will not hit it. A semi-flush mount works better in rooms with nine-foot or ten-foot ceilings. Because a semi-flush fixture sits below the ceiling plane, light bounces off the ceiling paint as well as shining down into the room, making the entire space feel softer and more evenly lit.

Inside these fixtures, you will find either standard threaded sockets that take replaceable lightbulbs or a flat metal tray holding a built-in LED. To find out what you have, unscrew the small decorative knob at the bottom of the glass bowl or twist the glass shade counterclockwise. If you see familiar threaded sockets, you can change the light warmth and brightness simply by swapping bulbs. If you see a flat yellow circuit board with small light diodes, the entire fixture is an integrated unit.

Lights That Hang or Aim: Pendants, Chandeliers, and Track Lights

When ceiling lights drop well below the ceiling surface or spread out across a metal rail, they serve a specific purpose such as highlighting a table, illuminating a counter, or washing an art wall with light. You can recognize these three distinct styles immediately by their shapes and mounting hardware.

Pendant lights hang down from the ceiling on a single wire cord, metal chain, or solid pipe. They typically feature a single shade or globe at the bottom. Pendants work as task lights, which means they deliver focused light to an exact work area below. You will most often spot them hung in pairs or trios over a kitchen island, suspended low over a kitchen sink, or hanging on either side of a bed instead of table lamps.

Chandeliers are larger, multi-branch hanging lights that hold several bulbs on multiple arms. While people often think of formal crystal fixtures in traditional dining rooms, modern chandeliers include simple wagon-wheel shapes, branching brass rods, and geometric cages with exposed filament bulbs. If a hanging light has multiple arms or light sockets spreading out from a central stem, it is a chandelier rather than a pendant.

Track lights consist of a long, narrow metal rail mounted to the ceiling that carries low-voltage or line-voltage electric current along its length. Several small directional light heads snap into the track. You can slide each head along the rail and rotate it to point in any direction. This makes track lighting popular for art galleries, living rooms with accent walls, and kitchens where you need to aim light at different prep counters simultaneously. If you want convenient path lighting without running extra ceiling tracks, many people also look at motion sensor lights for hallways and stairs to keep dark steps safe at night.

Quick Check Before Shopping for Replacements

Before you head to the home improvement store or order a new fixture online, take two minutes to write down the exact specs of your existing setup. Bringing the right numbers prevents the common headache of buying a light that will not fit your ceiling cutout or work with your wall switches.

1. Measure the physical opening: If you have recessed cans, measure the interior diameter of the metal can or the outer diameter of the trim ring. The most common residential sizes are 4 inches and 6 inches, though 3-inch and 5-inch models also exist. For surface mounts, measure the width of the round ceiling plate (the canopy) to make sure your new fixture covers the existing paint mark and ceiling box.
2. Check the bulb connection: Look at how the light source connects. Does it take a standard screw-in bulb base (E26 medium base), a smaller candelabra screw base (E12), a two-pin twist-and-lock base (GU10), or does it have a built-in LED with no removable bulb?
3. Pick your brightness in lumens: Lumens measure actual brightness, while watts only measure power draw. An older 60-watt incandescent bulb produced about 800 lumens. If you want a soft bedside glow, look for 450 lumens. For bright kitchen island prep, aim for 800 to 1,100 lumens per light head.
4. Choose your color tone or warmth (Kelvin): The color number on the box determines the mood of the room. A 2700K warm soft white feels cozy and slightly golden, making it ideal for bedrooms and living rooms. A 3000K warm white looks clean and neutral for bathrooms. A 5000K crisp daylight gives off a cool, bluish-white tone that works well in workshops and utility rooms.
5. Confirm color accuracy (CRI): The color rendering index shows how true skin, food, paint, and furniture appear under the light. Aim for 90+ CRI for bathroom vanity lights, kitchen prep areas, and task desks so colors do not appear dull or greenish.
6. Check the location rating: Fixtures labeled dry-rated belong in living rooms, hallways, and dry bedrooms. Fixtures marked damp-rated are sealed for steamy bathrooms, laundry rooms, and covered porches. Fixtures marked wet-rated are designed for direct exposure to water, such as open outdoor overhangs or directly inside shower stalls.

Safe Replacement Basics: Bulbs vs. Whole Fixtures

Knowing the name of your fixture helps you decide whether a project is a quick two-minute DIY job or something that requires extra safety steps. Replacing a regular bulb inside a ceiling light is simple, but replacing the entire hardwired unit requires shutting down power at the source.

When swapping a standard bulb in a recessed can or flush mount dome, turn off the wall switch and wait a few minutes for the glass to cool down. Use a sturdy stepladder rather than balancing on a rolling chair. If a recessed lightbulb sits too deep for your fingers to grip, press a small rubber suction-cup tool against the flat glass face to spin the bulb loose without tugging on the ceiling drywall.

If you plan to replace the entire fixture or install a modern wafer light, safety rules change. Always shut off the circuit breaker at the main electrical panel before touching any wiring. Never rely on the wall light switch alone, because switch wiring can still carry live voltage even when the toggle is off. Use a non-contact voltage tester to verify that no electrical current flows into the wires inside the electrical box before you disconnect anything.

If you are pairing new fixtures with automated wall dimmers or smart lighting systems, make sure you install an LED-compatible dimmer switch. Older wall switches designed for incandescent bulbs can cause newer LED ceiling lights to buzz, hum, or flicker when dimmed. If you open your ceiling electrical box and find brittle insulation, frayed cloth-covered wires, or no ground wire, stop working and call a qualified licensed electrician to bring the wiring up to current building codes.

FAQs

What is the difference between a can light and a flush mount?

A can light sits completely hidden inside a circular hole cut into the ceiling drywall, leaving only a flat trim ring visible. A flush mount attaches directly to the surface of the ceiling and hangs below the drywall without any gap above it. Can lights provide direct downlighting from inside the ceiling, while flush mounts use a glass or fabric shade to disperse light across the room.

How do I know if my ceiling light has a replaceable bulb or built-in LEDs?

Remove the outer glass cover, lens, or trim ring and look directly at the light source. If you see a bulb that screws into a threaded socket or twists into two small metal pins, your fixture uses replaceable bulbs. If you see a flat, bare circuit board dotted with tiny yellow squares and connected to internal wiring, your light has a built-in LED that cannot be unscrewed.

What is that round glass bowl light in rental bedrooms called?

That fixture is called a flush mount ceiling light, often referred to as a glass dome light. Many people jokingly call models with a decorative metal finial in the center a boob light because of their distinctive curved profile. They are inexpensive, easy to install, and remain one of the most common standard lights in apartment bedrooms and hallways.

Why is my new ceiling light buzzing or flickering?

Buzzing and flickering usually happen when modern LED fixtures are paired with an older wall dimmer switch that is not rated for low-wattage LEDs. Older dimmers adjust voltage in ways that disrupt LED power drivers, causing a visible flicker or a noticeable hum. Replacing the old wall control with an LED-compatible dimmer switch almost always solves the problem.