Summary
Understanding the difference between halogen and LED bulbs allows for informed choices: both technologies are compared here through energy consumption, lifespan, brightness, cost, and light quality, to facilitate error-free replacement.
LED vs Halogen Bulb: The Essential Differences
The difference between LED and halogen primarily lies in their operation. Halogen bulbs produce light by heating a filament, while LED technology relies on a semiconductor diode that emits photons with much lower energy consumption and very little heat.
How Each Type of Lamp Works
The difference between an LED and a halogen bulb is observed in their very principle: halogen uses a tungsten filament in a halogen gas, typically iodine or bromine, to create light through incandescence at around 2,800 K. Conversely, LED lamps work through electroluminescence, without unnecessarily dissipating energy as heat.
- Halogen: filament brought to incandescence, with 80 to 90% of energy converted into heat.
- LED: PN-junction semiconductor diode, with less than 10% of energy converted into heat.
- Efficiency: 12 to 20 lm/W for halogen, compared to 80 to 120 lm/W for LED.
- Simple benchmark: after use, a halogen bulb remains very hot, while an LED bulb stays warm or cool.
Among the different types of lamps, we find classic incandescent, halogen, compact fluorescent, and LED. Today, the choice comes down to a simple reality: LED has become the benchmark solution for domestic lighting in the European Union.
Luminous Efficacy and Consumption Compared
To compare lighting technologies, it's better to look at lumens than wattage. A 7W LED lamp provides 400 to 500 lumens, which is equivalent to a 50W halogen bulb, with approximately 85% reduced consumption.
Depending on the desired ambiance, the equivalence can vary: a 9 to 10W LED covers approximately 800 lumens, while a 13 to 15W LED replaces a 75W halogen. The right choice therefore depends on the desired brightness and the type of lamp already in place, more than on power alone.
| Criterion | Halogen bulb | LED bulb |
| Power consumed | 50 W | 7 W |
| Luminous flux | 400–500 lm | 400–500 lm |
| Efficiency (lm/W) | 12–20 | 80–120 |
| Lifespan | 2,000–4,000 h | 25,000–50,000 h |
| Heat emitted | 80–90% of energy | Less than 10% |
| Mercury / toxics | No | No |
In addition, LED technology maintains better efficiency when the lamp is dimmable and used with a compatible dimmer. Consumption then decreases consistently with the requested lighting level.
Halogen Banned: What the Regulations Say
The manufacture of halogen bulbs has been banned in the European Union since 2018. Since 2023, commercialization has focused on LED, which practically requires replacing each halogen bulb with an LED as soon as it reaches the end of its life.
As soon as one considers the usage duration, the difference becomes clear: LEDs are recycled through the WEEE stream, and their lifespan of 25,000 to 50,000 hours significantly reduces the frequency of replacement.
How an LED Effectively Replaces a Halogen Bulb
Replacing a halogen bulb with an LED is, in most cases, done without modifying the installation. The principle is simple: a retrofit bulb uses the same base as the old bulb and fits into the existing luminaire, provided that the voltage and the type of lamp are respected.
Choosing the Right LED Based on Base and Brightness
The choice is based on actual brightness, expressed in lumens, rather than wattage. If an LED bulb replaces a halogen tube, a spotlight, or a more conventional lamp, first note the indications on the old bulb: lumens, identical base, and voltage, then select a new bulb offering equivalent output.
- 20W Halogen: a 3 to 4W LED generally provides similar brightness with the same base.
- 50W Halogen: a 7 to 9W LED is usually suitable, in E27 or GU10 depending on the lamp.
- 75W Halogen: a 13 to 15W LED ensures a comparable lighting level, without an adapter if the base remains identical.
- Universal Voltage: Olibam LED bulbs operate at 90-260V, which facilitates their compatibility with French and European installations.
Once the color temperature is chosen, also check the luminaire's format: a wall light or a pendant light does not offer the same diffusion. Olibam references are available in an amber 2,200K version or a lighter shade, like this LED wall light designed to diffuse a warm accent light.
Dimmable LED and Dimmer Compatibility
If the installation includes a dimmer, opt for a bulb explicitly marked "dimmable": a non-compatible LED may flicker, lose stability, or wear out prematurely.
Olibam luminaires accept dimmable E27 models with fine brightness adjustment. In addition, a designer LED pendant light allows adjusting the lighting according to the desired ambiance, with more controlled variation than a filament halogen.
Replacing a 12V Halogen Bulb with a Transformer
To replace a halogen bulb on a 12V circuit, the existing transformer must be checked. The total consumption of the connected LEDs must remain between the minimum required load and approximately 60% of the transformer's maximum load; beyond that, the transformer must be replaced.
Conversely, if compatibility is confirmed, the replacement is direct with the same GU5.3 base, without additional wiring. Once the project is validated, the difference is mainly measured in terms of lifespan: up to 50,000 hours for an Olibam LED, compared to 2,000 to 4,000 hours for a halogen, with reduced consumption and fewer interventions.
To refine this choice, the ADEME guide details the selection criteria, particularly concerning consumption thresholds and efficiency labels: consult the LED vs Halogen page before selecting your bulb.
LED vs Halogen Light Quality for Your Home
The light quality of current LEDs closely approaches that of halogen, with a flexibility that this technology does not offer. The color temperature can vary from 2,200 K to 6,500 K, allowing the lighting of each room to be adjusted according to use and desired ambiance.
Warm White LED and Color Rendering Compared
Halogen remains the historical reference with a color rendering index of 100. In contrast, a high-end LED today reaches 95 to 98, which makes the difference almost invisible indoors. The choice comes down to a simple criterion: for a kitchen, a bathroom, or a workshop, opt for a bulb with a CRI higher than 90.
Unlike early generations, LED is no longer associated with cold light. The amber models offered by Olibam go down to 2,200 K, with a consumption of only 3 to 4 W: enough to find a warm white similar to old halogen lamps, without the same heat emitted or the same energy expenditure.
Adapting LED Lighting to Each Room
In relaxation areas, warm white between 2,700 and 3,000 K remains the most accurate benchmark. Living room, bedroom, dining room: this color temperature creates an enveloping light, similar to that of a halogen lamp, while limiting radiated heat and consumption.
For an office or a kitchen, a more neutral shade between 3,500 K and 4,000 K improves readability and visual comfort. Unlike halogen fixed at 3,000 K, a 4,000 K LED reduces visual fatigue during long work sessions.
An LED emits little heat, but good ventilation remains useful to preserve performance over time: to be favored in spaces where the bulb is installed in a recess or a closed volume, always checking the luminaire's compatibility.
Consumption, Cost, and Lifespan: LED vs Halogen
At comparable brightness, a 7W LED bulb consumes much less energy than a 50W halogen, which results in real long-term savings.
Over ten years, with 3 hours of use per day, the cost difference exceeds €790 per replaced bulb. The choice comes down to a simple point: a higher purchase price for LED, but reduced consumption and a significantly longer lifespan.
Real Savings Over 10 Years with LED
In detail, the consumption of a 50W halogen represents approximately €820 in electricity over ten years, compared to €120 for a 7W LED offering the same light. The savings can reach €20 per year per bulb: in a room equipped with ten spotlights, the gain exceeds €200 from the first year.
- Total halogen cost over 10 years: approximately €940 per bulb, including replacements.
- Total LED cost over 10 years: approximately €150 per bulb, including initial price.
- Replacement frequency: 5 to 6 halogen bulbs versus 0 to 1 LED bulb over the same period.
- Amortization: despite a higher initial price, LED becomes profitable from the first year with sustained use.
Halogen often gives the impression of an economical purchase, while its overall cost is higher. Conversely, LED is part of a sustainable logic: energy efficiency up to 7 times higher and a lifespan that can reach 50,000 hours for Olibam models guaranteed for 2 years. To choose between LED or halogen bulb, the figures provide a concrete benchmark.
Environmental Impact of LED Light
Its consumption, up to 90% lower than that of a halogen, reduces CO₂ emissions associated with electricity generation.
This long lifespan also changes daily use: a single LED bulb can replace 10 to 20 halogen bulbs over time, which limits waste and transport related to replacement. By choosing the right format and the right light temperature, it becomes possible to combine visual comfort, savings, and energy efficiency.
LEDs do not contain mercury or toxic gases, which facilitates their recycling in the standard WEEE stream. In practice, opt for a long-term solution: fewer replacements, better light output, and controlled operating costs. Olibam's selection of LED bulbs, E27 base, guaranteed for 2 years, is available online.
Frequently Asked Questions
What is the main difference between an LED bulb and a halogen bulb?
The difference primarily lies in their operation. A halogen bulb heats a tungsten filament in a halogen gas, thus converting 80 to 90% of its energy into heat, much more than into light. Conversely, an LED directly produces light through electroluminescence: its efficiency reaches 80 to 120 lm/W, compared to 12 to 20 lm/W for a halogen. Concretely, a 7W LED lamp can offer the same brightness as a 50W halogen bulb.
Is it possible to directly replace a halogen bulb with an LED?
Yes, in most cases. The choice depends on the compatibility of the base and format: a retrofit LED generally uses the same base as the old bulb, whether it's an E27, a GU10, or a GU5.3, allowing it to be installed in the same lamp without electrical modification. Once this is checked, rely on the brightness expressed in lumens rather than wattage. For a 12V spotlight with a transformer, simply check that the total load remains compatible with the existing equipment.
Is the light quality of an LED comparable to that of a halogen?
Depending on the desired ambiance, an LED bulb can offer light from 2,200 K, very amber, up to 6,500 K for a rendering closer to daylight. In terms of colors, quality models achieve a CRI of 95 to 98, while halogen remains at 100: the difference remains subtle in domestic use. At Olibam, the amber bulbs at 2,200 K are designed to reproduce the visual warmth of an old halogen bulb.