Quelle ampoule LED peut remplacer une ampoule halogène ?

Dans presque tous les cas, oui : gardez le même culot et visez un flux lumineux équivalent. Une ampoule à vis E27 se remplace par une LED E27, un culot à broches G9 par une LED G9. Seule la puissance affichée change, divisée par sept environ pour la même lumière.

Est-ce qu'un transformateur halogène est compatible avec les lampes LED ?

Cela dépend de la tension. En 220 V, il n'y a pas de transformateur : la LED se visse à la place de l'halogène. En 12 V, l'alimentation en place est souvent mise en défaut, parce que sa charge minimale ne correspond plus à la faible consommation d'une LED.

Puis-je mettre une ampoule LED sur n'importe quel luminaire ?

Presque partout, oui, mais deux contraintes reviennent : l'air chaud emprisonné dans un volume fermé et la place disponible sous l'abat-jour. Une LED chauffe moins qu'une halogène, et pourtant elle craint davantage l'absence d'aération. Le culot, lui, doit correspondre exactement.

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Replacing a halogen bulb with an LED: the right choice

This article is also available in French: Remplacer ampoule halogène par led

05/10/2026 · 9 min read · By the Designix team

First find the base of your halogen (E27, E14, GU10, G9 or G4) and the circuit voltage, 12 V or 220 V, before ordering anything. Then convert the wattage to lumens: a 50 W halogen is replaced by a 6 to 7 W LED. Finally, check the free space under the shade.

Which LED bulb can replace a halogen bulb?

In almost every case, yes: keep the same base and aim for an equivalent light output. An E27 screw bulb is replaced by an E27 LED, a G9 pin base by a G9 LED. Only the stated wattage changes, divided by about seven for the same light.

Halogen or LED: what to check before switching

	Your halogen	The LED to choose	The sticking point
230 V, E27 base (pendant, floor lamp)	halogen screw bulb	E27 LED 230 V	nothing: same socket, same supply
230 V, E14 base (small globe, wall light)	small-base halogen	E14 LED 230 V	the shade volume, which must let the bulb breathe
230 V, GU10 base (recessed spotlight)	GU10 halogen spotlight	GU10 LED 230 V	the body length in the spotlight, to measure beforehand
230 V, G9 base (short bulb)	G9 halogen	G9 LED 230 V	the width: some G9 LEDs are wider than the halogen version
12 V, G4 base (under-cabinet, small spotlight)	low-voltage halogen	G4 LED 12 V	the 12 V transformer, often incompatible
R7s linear halogen	linear halogen	R7s LED	the exact length of the lamp, to measure before ordering
Halogen controlled by a dimmer	halogen on an old dimmer	dimmable LED	the dimmer, designed for a resistive load

Which bases replace a halogen bulb?

Five bases cover most home light fixtures, and all exist in LED versions. Before comparing, let the old bulb cool down: a halogen stays hot long after it is switched off. The full procedure is described in changing a halogen bulb.

E27: large screw base, on floor lamps and pendants
G9: two thin pins, on ceiling lights and decorative fixtures
G4: small pin base, reserved for low-voltage setups
E14: small screw base, on bedside lamps and wall lights

Of the 266 references in our LED Bulbs collection as of 5 October 2026, a survey of 33 product pages ranks E27 at 42%, G9 at 27%, G4 at 24% and E14 at 15%. The warranty is also shown on the product page: 2 years on 73% of the survey, 5 years on 27%.

Recessed spotlights are a separate case. The GU10 base dominates there, and our range of GU10 LED bulbs covers both narrow and wide beams.

Why think in lumens rather than watts?

Because a watt measures consumption, not the light produced. A 50 W halogen delivers around 700 lumens, which a 7 W LED reaches easily. This reference point avoids choosing too weak and ending up with a dim room.

To light an entire room, it is better to calculate the amount of light needed point by point than to multiply sources at random.

Our selection of LED bulbs shows the output and colour temperature on every product page, base by base.

LED bulbs to replace your halogens, room by room

See the whole selection: LED Bulbs

Is a halogen transformer compatible with LED lamps?

It depends on the voltage. At 220 V, there is no transformer: the LED screws in where the halogen was. At 12 V, the existing power supply is often caught out, because its minimum load no longer matches the low consumption of an LED.

What to do when the installation is 12 V?

The transformer may refuse to start on too low a load: the LED stays off, flickers or hums. Three options, depending on what you want to keep in place.

Ferromagnetic transformer: high minimum load, often incompatible with an LED of a few watts
Electronic transformer: more tolerant, check the product page before buying
12 V bulb: the solution that leaves the installation as it is

If your halogen is low-voltage, the transformer is the first thing to check before ordering. To describe your installation, a few photos and the voltage are enough: we will reply with what to do next.

And if the installation is 220 V?

The replacement is direct: unscrew the halogen, screw in the LED. No transformer to change, no minimum load to respect. One point of caution remains, the dimmer, covered just below.

Point	12 V installation	220 V installation
Transformer	Present, to check	None
Replacement	12 V LED, or LED-compatible power supply	220 V LED, directly
Sensitive point	Minimum load	Dimmer compatibility

Replacing a halogen bulb with a dimmable LED

It all comes down to the dimmable mention. An LED not designed for dimming flickers, buzzes or switches off in steps as soon as the intensity is lowered. An LED stated as dimmable works, provided the dimmer accepts very low loads.

Why does my LED flicker or buzz?

The dimmer chops the current in a way the bulb's electronics do not interpret. Two outcomes: change the bulb, or change the dimmer. The problem cases are detailed in halogen replaced by a dimmable LED.

If the noise persists after changing the bulb, our help and after-sales service can point you to the right bulb-dimmer pairing.

How to recognise a dimmable LED bulb?

The mention is written in black and white on the product page: dimmable, dimmer, variable intensity. Without it, the bulb is not made for dimming, even if the base is identical. The term dimmable LED refers precisely to a bulb whose electronics accept a reduced supply.

Our range of dimmable LED bulbs groups these references, sorted by base and by white temperature.

Can I put an LED bulb in any light fixture?

Almost anywhere, yes, but two constraints keep coming up: hot air trapped in a closed volume and the space available under the shade. An LED heats less than a halogen, and yet it suffers more from a lack of ventilation. The base, meanwhile, must match exactly.

Closed volume and tight shade

A closed globe or a shade pressed against the bulb traps heat. In the survey of 33 references from our catalogue as of 5 October 2026, all are rated IP20: perfect in dry interiors, insufficient in a bathroom.

Closed volume: choose an LED whose product page states it accepts this type of fixture
Tight shade: measure the free height before ordering
IP20: the protection rating of all the references surveyed, to be kept for dry rooms

A living-room halogen lamp is most often converted with no change other than the bulb.

2700 K or 3000 K to get back a halogen's light?

A halogen glows at around 2800 K. To get that warmth back, aim for 2700 K. For a crisper result in a kitchen or an office, go up to 3000 K. The difference looks small, but it shows immediately.

This setting matters more than the wattage. On a glass pendant light, a white that is too cool freezes the material and flattens the rest of the room.

Which halogen bulb do you want to replace first?

Replacing a linear halogen bulb with an LED

A linear bulb is replaced like the others, with two details: the tube length and the supply voltage. These linear lamps equip bathroom fixtures, reading lamps and some ceiling lights, with an R7s base at each end.

Which linear LED length to choose?

Measure the tube including the pins: 78 mm and 118 mm are the two common lengths. An LED of another length will not fit the sockets, even if the wattage matches.

78 mm: small fixtures and bathroom mirrors
118 mm: reading floor lamps and tube ceiling lights
Output: aim for the lumens of the old linear bulb, not its watts

A high-power linear halogen bulb sometimes requires an LED with a wider body: check the space around the tube before ordering.

Does the voltage change anything?

Yes. Most linear bulbs run at 220 V, but furniture models exist in 12 V and require an LED designed for that voltage. A powerful halogen switched to LED lightens the load so much that the transformer may refuse to start.

These tubes often equip a bathroom wall light, where the protection rating matters as much as the base.

Before ordering your LED: the six checks

Note the base written on the socket or on the old bulb: E27, E14, GU10, G9, G4 or R7s.
Measure the available space: a tight shade or a shallow spotlight rules out some models.
Identify the voltage: 230 V on a standard socket, 12 V on a low-voltage fixture with a transformer.
Check whether the switch is a dimmer, and look for the dimmable mention on the packaging.
Choose the colour temperature: 2700 K for warm light, 3000 K for a crisper white.
Check the protection rating for a damp room or outdoors: IP20 is not suitable above a bathtub.

Our selection is reviewed by buyers; the Google listing for the business remains the quickest way to check who you are buying from.

Replacing a halogen with an LED: the questions that keep coming up

Can I replace a halogen bulb with an LED?

Yes, provided you keep the same base and the same voltage. Two points decide success: the output in lumens, which replaces wattage as a buying reference, and the power supply, since a low-voltage fixture with a transformer requires a compatible LED or a suitable driver.

Can I put an LED bulb in any light fixture?

Almost: check the base, the voltage and the space around the bulb. A tight shade or a shallow spotlight limits the models available. In a damp room, also check the protection rating of the socket and the bulb.

Is a halogen transformer compatible with LED lamps?

Not always. The ferromagnetic transformers found behind a 12 V halogen deliver a voltage that does not suit LEDs: the light flickers or does not come on. The solution is a 230 V LED or a suitable LED driver.

Which LED bulb can replace a halogen bulb?

The same base family, in its LED version: E27, E14, GU10, G9, G4 or R7s. In a survey of 33 references from our LED Bulbs collection as of 5 October 2026, the bases break down as follows: E27 42%, G9 27%, G4 24%, E14 15%. Then choose the colour temperature, and the dimmable mention if a dimmer is in place.