# Comparing light fixture output

graywings123April 16, 2012

Can anyone tell me whether a light fixture using

four GU24 13-watt fluorescent bulbs

will produce more light than a fixture using

one 22-watt bulb and one 32-watt T9 circline bulb?

Is it simple math?

4x13=52

22+32=54

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brickeyee

Watts are not light output.

April 16, 2012 at 9:48AM
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graywings123

OK. So how can I figure out the answer? Do I try to find out the lumens?

If I look up "13 Watt GU24 Base CFL Light Bulb" I can find one for sale that has an output of 950 lumens

I can find a 32 watt T-9 circline bulb with an output of 1950 lumens and a 22-watt t9 circline bulb with 675 lumens.

So,

Is the answer to my question now:
4x950 = 3800 lumens
vs
1950 lumens + 675 lumens = 2625?

Or do bulbs of the same size vary in light output?

April 16, 2012 at 11:15AM
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brickeyee

Lumens would be a better measure, but even that can be affected by fixture design.

April 16, 2012 at 3:20PM
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