Lumens = Brightness

or light output, that’s it… simple

The brighter the unit the higher the Lumens.

The higher the Lumens perWatt the greater energy savings you’d get, typically you want an LED unit that can produce 70+ Lumens perWatt, or 70lm/W.

So- you want to know how much Lumens you need(?). The short answer, it depends. However, here are some examples of total light output from common commercial and industrial light sources

(NOTE: these are for example purposes only – the actual output can vary quite a bit)

Wattage (Watts or W) is the power required to operate a light fitting. So the rated wattage of a light source refers to the entire power consumed to drive the source, and lumens only refers to the light output of that source.

Warehouse lighting

Warehouse lighting

A 400W high bay for warehouse lighting you can get 38000 Lumens output

General task lighting

General task lighting

A 100W Incandescent bulb – for general task lighting applications: 1700 Lumens output

Office lighting

Office lighting

A 32W T5 or T8 Fluorescent tube – for office ceiling lighting – 1600 Lumens output

Street/area lighting

Street/area lighting

A 150W High pressure sodium bulb – for street/area lighting – 12000 Lumens output

What About LEDs????

Because LED uses far fewer Watts to generate the same light output as conventional lamps, it becomes a little tricky to establish which LED lamp to go for so that you don’t go blind from all the lumens. For example a conventional 60W lamp can be replaced by a 10W LED lamp, and on industrial specs you can achieve this with a 7W LED.

How many lumens do I need?

There is no firm answer-  but as we’re are here to help, below is an approximate guide to help you on your quest to have the perfect Photon (aka light).

REMEMBER! there are a few factors to have bare in mind including; room size and shape, height of ceilings, colour scheme, type of lamps & fitting, task areas and needs of the user. In many cases a mixture of general and task lighting will be required.

Here’s the basic guide – lumens required per Sq M (10.76 sq ft) for different room settings.

Area
Lumens/Sq M
Bedroom 300-400
Bedroom (Task) 700-800
Bathroom 500-600
Bathroom (Task) 700-800
Kitchen 300-400
Kitchen (Task) 700-800
Living Room 400-500
Hallway 300