While the math for the cfl bulbs is simple the led bulbs are even more energy efficient and durable than compact fluorescent light bulbs.
27 watt fluorescent bulb equivalent.
The bulb can last up to 5000 hours 5x longer than other bulbs for years of normal use.
So to replace a traditional 60 watt bulb buy a 15 watt cfl.
Sterl lighting 2 bulbs fml27 65 fml 27 watt quad tube compact fluorescent light bulbs 6500k color temperature 4 pin gx10q 4 base 4 6 out of 5 stars 366 14 99 14.
Save on your electric bills.
Baltoro fml27 50 27 watt linear quad compact fluorescent cfl replacement bulb for sunlight desk or floor lamps fml27 ex d fml27ex n by baltoro llc 4 3 out of 5 stars 669 15 98 15.
60 watt incandescent 4 15 watts.
Eiko fml27 65 quadtube compact fluorescent light bulb 27 watts gx10q 4 base t 4 bulb 5 7 145mm mol 2 5mg mercury content 1400 approx initial lumens 10000 rated life pack of 2 4 4 out of 5 stars 76.
For example a correct replacement for a 60w incandescent bulb would be a 15 watt cfl bulb 60 1 4 15.
Philips led instantfit 4 foot t8 tube light bulb 1800 lumen 4000 kelvin 16 32 watt equivalent medium bi pin g13 base cool white 8 pack 544247 4000 kelvin 8 count 4 1 out of 5 stars 105 56 00 56.
Feit electric 27 watt equivalent pl cflni quad tube 4 pin plug in gx10q 4 base compact flurorescent tube light bulb daylight 6500k model bppl27f 65k 27.
Because fluorescent lights are often installed in high ceilings in commercial sites there are additional savings because the frequency of changing bulbs is greatly reduced.
You may need to go to two 75 watt equivalents in some ceiling fixtures to get the light you want.
The high tech 27 watt bulb with a c r i.
Color rendering index of 80 85 gives as much light as an ordinary 150 watt bulb but uses far less energy.