Rooms feel wrong either because the light is in the wrong place or because it is the wrong colour. This room-by-room guide covers lumens, colour temperature, layers and dimmers.
Rooms tend to feel wrong for one of two reasons. The light is in the wrong place, so you work in your own shadow, or it is the wrong colour, so a cosy lounge looks like a waiting room. Both are fixable without rewiring, and neither depends on buying more expensive bulbs. This guide starts with the three numbers worth reading, then goes room by room.
Lumens measure brightness; watts measure the power a bulb uses. The US Department of Energy puts it plainly: lumens are a measure of the total amount of visible light, so buy by lumens. Natural Resources Canada agrees, with a 9-watt LED giving about the same light as a 60-watt incandescent, around 800 lumens.
| Light output | Old incandescent | ENERGY STAR LED (typical range) |
|---|---|---|
| 450 lumens | 40 W | 4.5 to 7 W |
| 800 lumens | 60 W | 5.9 to 10.5 W |
| 1,100 lumens | 75 W | 9.5 to 14 W |
| 1,600 lumens | 100 W | 10.5 to 18 W |
| 2,600 lumens | 150 W | Not given in the sources |
Kelvin (K) describes the colour of the white light. Lower figures are warmer and yellower, and higher ones cooler and bluer. The Department of Energy lists 2,700 K as warm, 3,000 K as soft, 3,500 K as neutral and 4,100 K as cool, the last usually found in offices and classrooms. Natural Resources Canada adds that residential LEDs range from about 2,000 K to 6,500 K.
CRI, the colour rendering index, runs from 0 to 100 and says how faithfully a light shows colours. The Department of Energy notes that ENERGY STAR-qualified bulbs must score 80 or more. That programme is a North American one, so in the UK or Australia read the CRI figure on the packaging directly rather than relying on a label.
Natural Resources Canada’s home lighting guide describes four layers, each ideally on its own control. Ambient light is the soft general fill that reduces shadows. Task light is extra brightness for reading, cooking or working. Accent light highlights art, plants or a textured wall. Decorative fittings, such as sconces or a chandelier, are chosen mainly for how they look.
A single ceiling light gives you only the ambient layer, and the brightness you choose to read by is the brightness you then sit in all evening. Separating the layers is cheaper than it sounds: a lamp for reading, a small light on a shelf and a dimmer on the ceiling fitting can all be changed without touching the wiring beyond the dimmer switch itself. Any switch or wiring change should be done by a qualified electrician.
| Room | Layers to aim for | Colour temperature guide | Practical note |
|---|---|---|---|
| Hallway and entry | Ambient plus a feature light by the door | Warm (about 2700-3000 K) | Downlights alone cast shadows; switches at both ends help |
| Living room | Lamps, indirect ambient light, accent | 2700-3000 K | Control glare where you read; dim for TV |
| Kitchen | General light plus task light under wall cabinets | Cooler light suits task areas, per NRCan | Separate controls rather than one switch |
| Dining area | Dimmed overhead plus wall or side lighting | Warm, 2700-3000 K | Do not rely on one pendant at full brightness |
| Bedroom | Soft ambient plus glare-controlled reading lights | Warm, 2700-3000 K | Dimmable bedside lights on separate switches |
| Bathroom | Light at the mirror from the sides, plus general light | No figure in sources; choose a high CRI | Keep the fan on a separate switch; check fittings are rated for damp areas |
| Home office | Even, low-glare general light plus a task lamp | About 3500 K | Place the screen to avoid reflections |
| Stairs | Even light with no dark steps | Warm (our suggestion) | Switches at top and bottom; low step lights |
None of the agencies we read gives a lumen target for each room, and any such figure on a product page depends on room size, wall colour and fittings, so we have not invented one. A practical method is to count your current fittings, look up what each bulb produces on its packaging, and adjust from there. If a room feels dim, add a layer before you buy a higher-lumen bulb for the same fitting.
Dimming is the cheapest way to make one fitting serve several moods, but not every LED dims. Check the bulb’s packaging for dimmable compatibility, and if your existing dimmer was installed for older bulbs, it may need to be replaced with one designed for LEDs. Natural Resources Canada does not cover how to test compatibility, so rely on the manufacturer’s lists for both bulb and dimmer.
Smart bulbs connected to your wireless network can be dimmed, or have their colour changed, from a phone, tablet or smart assistant, says NRCan. Plain lamps can be scheduled using a smart plug, though a plug only switches power on and off and cannot dim. Outdoors, NRCan mentions motion-sensing lights that switch on only when someone is nearby; for garden paths, see our guide to solar outdoor lighting.
Storage areas deserve a layer too. In pantries and cupboards, shelf lighting is one of the simplest ways to see what you own.
How we research. Based on manufacturer documentation and the sources listed below. Know Your Gadget did not test products for this article. See our editorial policy.
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