LED lighting: switching to all-LED, room by room

Check the base of every light point, E27, E14, G9 or GU10, then replace the most-used lamps first: kitchen, hallway, living room. Those are the ones that weigh on the bill and make the biggest difference to comfort. A fixture with an integrated light source cannot be replaced: it stays until the end of its life or gets changed entirely.

Where to start when switching to all-LED?

Start with the three most-used points in the evening: the living room ceiling light, the kitchen pendant, the desk lamp. You measure the comfort gap before extending to the rest of the home. Going through a living room and living space lighting project avoids buying the same mistake three times.

Which bulbs to replace first?

Three criteria decide the order: the number of hours lit, the height of the point, the difficulty of access.

• Kitchen: several hours a day, often with direct light on the worktop.
• Hallway and entrance: lit for short periods, but very frequently.
• Living room: the point that structures the room and serves in the evening, at 2700 K or 3000 K.
• Bathroom: deal with it next, checking the ingress protection before the colour.

An E27 bulb covers most ceiling lights and table lamps. The format is chosen after the room, never before.

Should you change everything at once?

No, and it is the best way to get it wrong. Replace in batches, keeping little-used points as they are until the end of their life. One check before buying: the dimmer. If it is old, an LED bulb not designed for it will buzz.

To frame needs room by room, choosing the right lighting for each room takes a quarter of an hour, once.

Do LEDs use a lot of electricity?

No. An 8 W LED bulb lights as much as a 60 W incandescent, for about a tenth of the energy drawn. Over three hours of daily use, the gap shows at the end of the year. Lighting nonetheless remains a modest item in a home.

Why lumens matter more than watts

Watts measure the energy drawn, lumens the light produced. Two bulbs of the same power therefore do not light the same. Three markers are enough on the packaging:

• Power, in watts, which weighs on the bill.
• Flux, in lumens, which tells the amount of light available.
• Temperature, in kelvins, which decides the mood.

To compare two references at equal power, our article on which bulb uses the least details the calculation.

What really uses energy in the home?

Heating, hot water and cooling come far ahead of lighting. Switching to all-LED will not turn a bill around on its own. On the other hand, spreading the right amount of light per square metre changes everything in how it feels, as our guide on the right number of lumens per m² explains.

Can you install LEDs everywhere in a home?

Almost everywhere. On a survey of 185 references from our catalogue as of 5 October 2026, 99% declare LED technology. The real question lies elsewhere. On the same survey, 29% show an E27 base, so a bulb that can be replaced, and 29% an integrated LED source, which cannot be replaced.

E27, E14, G9 and GU10 bases: what can be replaced

Identify it with the fixture switched off, by hand. Wide screw base for an E27, thin base for an E14, two short pins for a GU10. To tell them apart without dismantling, the different types of bulbs can be compared at a glance.

A ceiling spotlight is then replaced by a GU10 bulb of equivalent flux, without touching the housing or the recess.

Integrated sources cannot be replaced

A wall light with an integrated source keeps its LED until the end: nothing is dismantled, nothing is bought again. The survey of 185 references as of 5 October 2026 shows that 92% state a 2-year warranty, which bounds the manufacturer's commitment. Changing an integrated LED bulb remains possible on a few models, never the rule.

For wall lighting, the wall lamp with a bulb remains the most repairable choice. Product pages state technology, base, ingress protection and warranty, and the Designix Google listing gathers buyer feedback, kept up to date.

Switching to all-LED room by room

Each room is played on three sliders: the temperature in kelvins, the base, the ingress protection. A bedroom lives at dimmed 2700 K, a kitchen at a crisp 3000 K, a bathroom at IP44 minimum. Colour is chosen last, when the use is clear.

Bedroom and office: 2700 K, dimmer, indirect light

In the morning, light that is too cool wakes you badly. In the evening, a single ceiling light flattens the room. A bedroom fixture aimed at the wall, doubled with a reading wall light, handles both moments.

• 2700 K for ambient and waking light.
• A dimmer to lower the intensity without changing the fixture.
• An adjustable bedside wall light, at shoulder height, to read without lighting the other person.

When the two rooms follow each other, a bedroom and office lighting project handles both on a single plan.

Kitchen and dining room: 3000 K above the worktop

The worktop needs crisp light, the rest of the room a softer light. A kitchen pendant lowered to eye height lights the worktop without dazzling when standing. The meal itself is played at 2700 K, lower and warmer.

Warm white or cool white: the right temperature per room

2700 K leans yellow, 4000 K leans neutral white, 6500 K leans blue. To decide between white or yellow light depending on the room, a simple rule: the more the room is used to relax, the lower the temperature.

If you prefer to frame the project before buying your sources, the Designix team answers installation questions: simply ask a question before ordering.

What are the drawbacks of LED lamps?

Three come up: an integrated source that cannot be replaced, unpredictable dimmer compatibility, a very widespread IP20 rating. On the survey of 185 references as of 5 October 2026, 86% show IP20, against 4% in IP44 and 7% in IP65. A damp room is therefore prepared before buying, not after.

Does an LED bulb heat up and does it present a fire risk?

Yes, it heats up, but not through the glass: through the heat sink, at the back. This metal part evacuates the heat produced by the junction. The risk remains low if the power matches the socket and the fixture is not hermetically sealed. To go further, how an LED works explains the path of that heat.

Dimmer compatibility and overly cool tones

An old dimmer, designed for halogen, makes a non-compatible LED flicker or buzz. The second point is less bothersome: 6500 K, reserved for garages and worktops, cools a poorly lit living room sharply.