Choosing LED lighting for different rooms: what actually matters

Colour temperature and lumen output are the two numbers that matter

Colour temperature is measured in kelvin and tells you whether the light looks warm or cold. Below 3000 K is warm white, similar to an old incandescent bulb, and suits bedrooms and living rooms. Around 4000 K is neutral white, common in kitchens and bathrooms. Above 5000 K is cold white, closer to daylight, and works in workshops or garages rather than living spaces.

Lumens tell you how much light comes out, and this is the figure to compare, not watts. An old 60 W incandescent bulb produced around 700–800 lumens, and an LED replacement needs roughly the same lumen figure to feel equally bright, even though it draws far less power.

Wattage on an LED box tells you almost nothing about brightness. It only tells you how much electricity the bulb uses, which is why comparing two LED bulbs by watts alone is misleading.

A kitchen worktop needs different light from a dining table

The worktop where you chop vegetables and read use-by dates needs bright, neutral light, around 4000 K and 400–450 lumens per fitting, positioned so your own body does not cast a shadow over the surface. Under-cabinet strip lights solve this directly, since ceiling spots alone often leave the counter in shadow.

The dining table or breakfast bar can run warmer, around 3000 K, since this is where people sit rather than work, and warm light is more comfortable for eating and conversation. A pendant over the table at this temperature feels different from the cooking area, and that contrast is intentional, not a mistake.

If your kitchen currently has one central ceiling light and nothing else, that is usually the actual problem, not the bulb type. Adding a dedicated worktop fitting is a small electrical job, and it is the kind of task we quote as light fitting installation from 40 € per job.

Bathrooms need a damp-rated fitting, not just a bright bulb

Bathroom fixtures need an IP rating suited to a damp room, and this matters more than colour temperature or lumen count. Look for IP44 as a general minimum in a bathroom, and IP65 or higher for anything installed directly above a shower or bath, where it may get splashed or briefly wet.

The IP number on the box has two digits: the first is protection against dust and solid objects, the second against water. A fitting rated only IP20, standard for a living room lamp, is not safe to install in a bathroom, regardless of how good the light looks.

For colour temperature, neutral white around 4000 K works well near a mirror for shaving or applying make-up, since it renders skin tone more accurately than warm light. Because bathroom lighting is also electrical work near water, this is a job we recommend having done properly rather than as a weekend attempt, and it falls under our electrical work from 49 € per hour.

In the living room, dimmability matters more than fixture type

A living room gets used for several different things across a day: bright light for cleaning or reading, low light for watching television, something in between for guests. A dimmable fitting handles all of these, while a fixed-brightness fitting forces a single compromise for every use.

Not every LED bulb is dimmable even if the fitting has a dimmer switch, and using a non-dimmable bulb on a dimmer circuit can cause flickering or humming. Check the box for a dimmable symbol, and check that the dimmer switch itself is rated for LED loads, since older dimmers were built for incandescent bulbs and behave badly with LEDs.

Colour temperature here is largely a matter of taste, though most living rooms sit comfortably around 2700–3000 K. Layering several light sources at different heights, a floor lamp, a table lamp, a ceiling fitting, gives more flexibility than one bright central light and is worth planning before buying bulbs.

Hallways: a motion sensor saves more than a cheaper bulb

A hallway or entryway light is typically on for short bursts, someone passing through, rather than staying lit for hours, which makes a motion sensor a better investment than hunting for the cheapest bulb. Sensor fittings switch on automatically as you enter with your hands full of shopping, and switch off on their own if you forget.

For colour temperature, neutral to slightly cool white, 3500–4500 K, suits a hallway well, since this is a transitional space rather than one for relaxing, and slightly cooler light reads as more alert and practical.

In stairwells shared with neighbours, in an older Tallinn apartment building this decision often needs agreement through the korteriühistu rather than being one resident's choice, since it affects shared electrical circuits and common areas.

• Kitchen worktop: around 4000 K, 400–450 lumens per fitting, positioned to avoid shadows
• Kitchen dining area: around 3000 K, warmer and softer
• Bathroom: IP44 minimum, IP65+ above a shower or bath, around 4000 K near a mirror
• Living room: prioritise a dimmable bulb and a dimmer rated for LED loads over a specific colour temperature
• Hallway: motion sensor fitting, 3500–4500 K
• Check lumens and IP rating on the box before checking price

What you can safely ignore on the packaging

Terms like «premium», «ultra bright» or «energy master» on a box are marketing language with no fixed meaning, and they tell you nothing that lumens, kelvin and IP rating do not already tell you more precisely. Ignore them entirely when comparing products.

Claimed bulb lifespans in hours, often tens of thousands, are difficult to verify and rarely matter in practice, since most people replace fittings for style or brightness reasons long before a bulb actually fails. A stated lifespan figure is not worth paying extra for.

Colour rendering index, shown as CRI or Ra on some boxes, is worth a glance if you care about how accurately colours appear, useful near a mirror or a wardrobe, but it is a minor factor next to getting the kelvin and lumen figures right for the room.