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Lighting our homes approximately costs one-fourth of our electrical bills. Energy-efficient bulbs/lights like CFL and LED will save us money in the long run by lesser power consumption compared to filament bulbs. Choosing the right bulbs can reduce our power bills and it is environment-friendly too. Understanding the differences between Compact Fluorescent Lamp (CFL) and Light Emitting Diode (LED) lights will make it easier in choosing suitable bulb for our usage. Before that, we should understand about specifications like “ Watts” and “Lumens” of bulbs/lights.

 

Watts - How much energy a bulb will consume when it is lit up? More Watts means more Energy consumption (i.e. electricity consumption).

Lumens - How much light a bulb will produce? More Lumens means more Brightness.

 

Working concept:

 

LED is a two-lead semiconductor light source, it has a positive (P) and negative (N) junction and so the name Diode. When current is passed through the diode's PN junction, electrons (present in this semiconductor device) are able to recombine with electron holes present within the device and releases (emit) energy in the form of light.

 

CFL – These bulbs are filled with mercury vapor and have a phosphorous coating inside the bulb surface. When electrical energy is passed, mercury vapor gets ionized and produce UV rays. These UV rays hit the phosphorous coating present inside the bulb surface and light is emitted.

 

Life span:

 

The average life span of a CFL is 8000 hours and LED is 25000 hours. Frequent ON/OFF switching will reduce the lifetime of CFL, but it's not the case with LED.

 

Power Consumption:

 

CFL requires more energy for Mercury ionization. 80% of its energy consumption is dissipated as Heat; LED requires less power because it emits light with the passage of current through the semiconductor material. CFL requires 13W power to produce 400 Lumens, whereas LED requires 7W power to produce the same Lumens.

 

Environmental & Health Impact:

 

CFL has hazardous materials like Mercury and Phosphorous - which are dangerous for the environment and living beings. If CFL breaks, clean-up and disposal of CFL is critical and to be done with at most care.

 

LED does not have any harmful materials like Mercury or Phosphorous. LED's semiconductors chip can be recycled easily; disposal of LED is also much easier.

 

Intensity:

 

Light rays emitted from CFL are Omnidirectional, i.e. the rays flow in all direction (360º). Diffusers or reflectors are used to keep these lights focused towards particular directions (or degrees). Usage of reflectors or diffusers may reduce the efficiency (light intensity or Lumens) of CFL after longer usage.

 

LED emits light in 180º, there is no need for any diffusers or reflectors to trap the emitted light and keep it focused. Since there is no diffuser or reflector the brightness of LED remains the same even after long usage.

 

Cost :

 

The initial cost of a CFL is lower than LED but LED lasts longer and the initial investment is nullified in less than a year. An Extended life span of LED reduces maintenance and replacement cost.

 

Conclusion:

 

LEDs outperform CFLs in almost every category, compared to filament bulbs both LED and CFL are efficient ways to light your home/office. Both will work with almost all kind of sockets, fixtures, and lamps we already own.

 

If you like a directional light for reading, working at home or cooking then you may prefer LEDs. For general home lighting like illuminating a room, CFL might be the right choice.

 

You can always use the combination of these bulbs in different parts of your home based on the lighting needs. For example, try LED for your kitchen, Home office desk and over Workspaces which needs sharper lighting; try CFL for your living rooms and bedrooms which needs better dispersion of light.