Room illumination

How much power is required to illuminate a room?

Lumen values on Paulmann packaging

Different rooms need different light. You should have more light in the kitchen or the bathroom than in the living room, and less in the hallway. A room decorated in light shades will require fewer lamps than a room with darker furnishings to achieve the same level of brightness.

Lumen (lm) is the unit of measurement of luminous flux and is therefore the decisive value for the brightness of a bulb.

For basic lighting we recommend the following values. They are based on averages measured over years of field experience and a range of tests which we conducted independently.

  • Basic lighting in the living room / hall           100 lm/m²
  • Basic lighting for kitchen / bathroom            300 lm/m²

The final touch is added to the basic lighting by additional light sources such as table lamps in the living room, under-cabinet lighting in the kitchen, or mirror lamps in the bathroom.

Many lights are dimmable, so you can adjust the lighting as desired.

When purchasing a new lamp you should also consider the luminous colour, as this describes whether the light is more yellowish/warm or bluish/cool. Cold luminous colours often seem brighter than warmer ones, but not as comforting.

  • Lumen
  • Dimmability
  • Luminous colour

Sample light plan 12m² living room with recessed lights


recessed lights
560 lm x 3 pc.
= 1.860 lm
= 140 lm/m²

Energy-saving bulb

3-piece set of recessed lights 920.01
3 x 240 lm x 2 sets
= 1.440 lm
= 120 lm/m²

Halogen 12 V

4-piece set of recessed lights 994.45
4 x 430 lm x 1 set
= 1.720 lm
= 143 lm/m²

Halogen 230V

6-piece set of recessed lights 988.80
6 x 292 lm x 1 set
= 1.752 lm
= 146 lm/m²