A medium base socket takes a light bulb you screw in and can swap. An integrated LED has the light source built into the fixture, so there is no bulb to change. Medium base gives you control over the light. Integrated LED gives you a slimmer fixture and nothing to replace until the fixture itself is done.
That is the short answer to medium base vs integrated LED. The longer answer is that neither one is better in every room. The right choice depends on how you want the fixture to look, how much control you want over the light, and what you expect to do on the day the light finally goes dim.
A medium base socket is the standard screw-in bulb holder used on 120-volt fixtures in North America. It is also called an E26 socket: the E stands for Edison screw, and the 26 is the diameter of the base in millimeters, which is roughly one inch. Any bulb sold with an E26 base fits it — an LED A19, a filament-style Edison bulb, a halogen, or an older incandescent.
Because the socket is a standard, the fixture and the light source are two separate purchases. You can put a warm 2700 K bulb in today and a brighter one in next year. You can raise or lower the output by changing the bulb rather than the fixture. And when the bulb finally fails, you replace a bulb, not the fixture on your wall. That is why medium base sockets are still the default on wall sconces and gooseneck lights.
Montclair builds most of its wall fixtures this way. Our wall sconces are specified around a medium base socket, which is why the same shade can be lit warm or cool depending on the bulb you choose. If you want the beam tightened as well, how a reflector shade aims that light is a separate lever you can pull.
An integrated LED fixture has its LED light source built into the fixture body. There is no socket and no bulb. The LED boards, the driver that powers them and the housing that carries heat away are engineered as one unit, which is why these fixtures can be made far slimmer than anything that has to make room for a screw-in bulb.
Integrated LED is what makes a slim picture light or a low-profile flush mount possible. It also lets the maker control the beam, the color temperature and the color rendering precisely, because they are not designing around whatever bulb a customer happens to screw in. The trade-off is that the light source is not user-serviceable. When the LED eventually dims past the point of being useful, the fixture is the thing you replace.
On our side of the catalogue, direct-wire LED picture lights are the integrated products. A picture light has to be slim, has to throw an even wash down a canvas, and has to be gentle on the artwork — three jobs that are much easier to engineer when the LED is part of the fixture. Our own product copy puts it plainly: the LED picture lights are designed to be kind to your art by eliminating harmful UV and infrared light. A bulb-based fixture cannot promise that, because the maker does not control the bulb.
|
Medium base (E26 socket) |
Integrated LED |
|
|---|---|---|
|
Light source |
Replaceable screw-in bulb (E26) |
LED boards built into the fixture |
|
Changing color temperature |
Buy a different bulb |
Fixed at manufacture |
|
Changing brightness |
Buy a different bulb |
Fixed at manufacture |
|
Fixture depth |
Set by the bulb it has to house |
Can be made much slimmer |
|
Beam control |
Comes from the shade and reflector |
Designed into the optic |
|
What you replace over time |
Bulbs |
The fixture |
|
ENERGY STAR minimum rated life |
Set by the bulb you fit |
L70 ≥ 50,000 h (inseparable luminaire) |
|
ENERGY STAR minimum warranty |
2 years (residential luminaire) |
3 years (inseparable luminaire) |
|
Typical Montclair use |
Sconces, goosenecks, Warehouse shades |
Direct-wire picture lights |
LEDs do not usually burn out the way an incandescent bulb does. ENERGY STAR describes what happens instead as lumen depreciation: the LED dims slowly, and its rated lifetime is set at the predicted point where light output has dropped by 30 percent. That figure is written as L70.
The ENERGY STAR Luminaires specification attaches numbers to it. To be certified, an indoor luminaire has to reach L70 at 25,000 hours or more and an outdoor luminaire at 35,000 hours or more. An inseparable luminaire — one whose LED cannot be removed, which is exactly what an integrated LED fixture is — has to reach 50,000 hours or more. The warranty minimums follow the same logic: two years for a residential luminaire, three years for an inseparable one. A medium base fixture has no such clock. The socket outlasts the bulbs, and you change bulbs when they dim.
Those hours are laboratory thresholds, not a promise about your hallway. ENERGY STAR is explicit that the higher the temperature at which LEDs are operated, the more quickly the light degrades and the shorter the useful life will be. An enclosed, poorly ventilated fixture will not reach the same number as a well heat-sunk one, which is one more reason how a fixture is actually built tells you more than the number on the box.
Usually not, and it is worth being blunt about it. In most residential integrated LED fixtures the LED board and the driver are not sold as consumer spare parts, and the housing is not designed to be opened. If the light fails inside the warranty window, the route is a claim with the manufacturer. Outside it, replacing the fixture is normally the practical answer.
There are exceptions. Some manufacturers, mostly in commercial and architectural lighting, do sell replacement LED modules or drivers for their integrated fixtures. If long-term serviceability matters to you, ask before you buy rather than after. It is a fair question and a good supplier will answer it.
This is the honest cost of an integrated LED, and it is why the format attracts as much criticism as praise. What you gain in form, you give up in repairability.
Both can be equally efficient, because in both cases the light is coming from LEDs. ENERGY STAR states that LED lighting products produce light up to 90% more efficiently than incandescent light bulbs, and that incandescent bulbs release 90 percent of their energy as heat. That gap is between LED and incandescent. It is not a gap between an integrated LED fixture and a medium base fixture with an LED bulb screwed into it.
Where an integrated design can pull ahead is heat and optics: the maker controls how heat leaves the LED and how the light is aimed, and both affect how much of the light produced actually lands where you want it. Where a medium base fixture pulls ahead is that you can fit a better bulb in five years, when better bulbs exist. Efficiency is not frozen at the moment of purchase.
We are not going to put dollar figures on this, because they move with the fixture, the bulb and your electricity rate. The shape of the cost is what matters, and the two shapes are different.
A medium base fixture is usually the lower purchase price, followed by a small repeating cost: bulbs. Choose the bulb badly and you pay for it in light quality. Choose it well and you can improve the fixture later for the price of a bulb.
An integrated LED fixture concentrates the spend up front and removes the repeating cost. There is nothing to buy and nothing to change until the day the fixture is finished, and at that point the replacement cost is the whole fixture rather than a bulb.
Neither of these is automatically cheaper. They are two different distributions of the same money.
• You want to be able to change the color temperature later.
• You want to choose the bulb style — a clear filament bulb reads very differently from a frosted A19 behind the same shade.
• You want a fixture you can keep for decades and service with an inexpensive part.
• You are matching an existing dimmer and want to pick a bulb that plays well with it.
• The fixture is a traditional or heritage style where a visible bulb is part of the look.
• The fixture has to be slim — picture lights and low-profile flush mounts.
• The beam has to be controlled precisely, as it does over artwork.
• You want a sealed unit for a damp or exposed location.
• You genuinely never want to think about a bulb again.
• Color rendering and consistency matter more to you than future flexibility.
We make both, and the split is deliberate rather than accidental.
Our wall and ceiling fixtures — gooseneck wall lights, Warehouse shades, flush mount lights and outdoor wall lights — are built around a medium base socket. These are spun-metal fixtures made to outlast the room they are installed in, and it would be a strange decision to build a fixture that lasts that long and then seal a non-replaceable light source into it.
Our picture lights go the other way. The direct-wire models are integrated LED because the job demands it, and the corded models sit in the same family. If you are still weighing it up, our product pages list the socket type for every fixture, so you never have to guess which format you are buying.
1. Do you want to change the color of the light later? If yes, medium base.
2. Does the fixture have to be slim, or aim light precisely at something? If yes, integrated LED.
3. What do you want to be holding in ten years — a fixture you can re-lamp, or a fixture you will replace?
4. If it is integrated, what does the warranty actually say? Ask for the number before you buy, not after.
Integrated LED means the LED light source is built into the fixture rather than screwed into a socket. There is no bulb to remove and no bulb to buy. The LED boards, driver and heat sink are part of the fixture, which is what lets integrated fixtures be made much slimmer than bulb-based ones.
An LED bulb is a light source you buy separately and screw into a socket. An integrated LED is the same technology built permanently into a fixture. Both are LED. The difference is whether the light source is a part you own separately or a part of the fixture itself.
Not in most residential fixtures. The LED board and driver are usually not sold as spare parts, so a failure inside the warranty period is a manufacturer claim and a failure outside it normally means replacing the fixture. Some commercial and architectural makers do sell replacement modules, so ask before you buy.
ENERGY STAR requires an inseparable certified luminaire to reach L70 — the point where light output has fallen by 30 percent — at 50,000 hours or more, with a minimum three-year warranty. Real-world life is shorter in hot or enclosed fixtures, because a higher operating temperature makes the light degrade faster.
They are very good at the jobs they are designed for: slim profiles, controlled beams, sealed housings and consistent color. They are a poor choice if you want to change the color temperature later or keep a fixture serviceable for decades. That is a design trade-off rather than a quality problem.
Still deciding which route is right for your space? Browse the full range of fixtures to compare medium base and integrated LED options side by side, or explore the available finishes to find the look that fits your home.
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