What Distinguishes LED Floodlight with Traditional Lamps

Which types of floodlights should I buy? How can I compare the performance of the LED floodlights? Why are prices so different? These are only a few questions asked, when people deal with the purchase of floodlights. In the following content, we focus on what really counts and how to compare floodlights.

Many people still remember the situation five years ago, you went to a store, a marketing specialist or an electrician said you needed a floodlight and the vendors asked if you wanted to have 70 watts, 150 watts, 500 watts, 1000 watts or 2000 watts. Quick advice and quickly was clear which performance would fit, lamps fit everywhere from any brand and the prices were very cheap. The fast development of LED has changed the selection and performance a lot, the prices vary massively and it’s even more difficult to make the right selection. 

Lumen, the indicator for the comparison of the flotation

It is no longer enough simply comparing the wattage or to use arbitrary conversion formulas. One of the most important elements to compare is the luminous flux with the unit LUMEN. The light current is the “light power” of a light source, in order to compare the different technologies, one has to consider the light deflection. Floodlights with halogen or gas discharge technology use a reflector that directs the light in the direction where it is required (loss of the reflector).

500w halogen vs 100w led

An incandescent lamp directs the luminous flux in almost 360 °, with the gas discharge lamp the reflector is used for the deflection and has losses. LED lights radiate directly and have no deflection of the luminous flux.

Light color brings different brightness of the floodlights

The light beam reproduces the whiteness of a light source, it describes the radiation distribution where light is visible to the human eyes. The color temperature is particularly interesting for daily lighting without high requirements.

Light color = color temperature + color reproduction

The color temperature describes the brightness distribution with the reference point of a standard black spotlight. The color temperature is characterized by Kelvin ranging from about 2,500 Kelvin to 8,000 Kelvin. The color temperature warm white has about 2,700 Kelvin and is the incandescent lamp, office light has about 4,000 Kelvin and pure white light in the laboratory is about 6000 Kelvin.

Light colors not only change the appearance of an illumination but also increase or decrease the luminous flux. It is decisive which light flux (lumen) is achieved at which light color. Very often, LED floodlights with cold light colors (> 6,000K) are more popular. You should always take a short consultation when buying LED floodlights.

Comparison of technologies

We assume that floodlights are now required in the low power range and compare the technologies to about 500 watts of halogen floodlights. In our comparison, we have fixed on the most common products and show in a simple listing the possibilities for comparing the technologies.

Halogen floodlight

The simplest and most well-known form of the floodlights is surely that of a halogen floodlight, by the simple technology of the high availability and the useful light output, halogen floodlights used to be the widely used floodlights. Simple technology and high automation requirements are the basic features of the halogen floodlights, the housing protects the light source, directs the light beam in the right direction and has the optimal conditions with the protection degree > IP55 for outdoor use.


  • Cheap in the acquisition.
  • Various services.
  • Warm light (3,000 K)


  • Short lifespan.
  • Poor light output.
  • High heat radiation.
400w halogen flood lamp

Gas discharge lamps

The first generation of gas discharge technology was the mercury gas discharge lamp which produced light via a gas and an ignition. For a very long time this technology was the standard in the industry, but the metal halide (HQI) technology developed very rapidly, which mercury clearly overshoot. Through the HQI floodlights, the economic lighting has got off to a good start and continues today. The third generation of gas discharge lamps technology is the sodium vapor gas discharge lamp, which is used especially in the lighting for streets area. The advantage here is a higher light output with the disadvantage of the color temperature of 2,000 Kelvin.


  • Cheap in price.
  • Various technologies and designs.
  • High robustness.
  • Usually high protection degree (IP65).


  • Long warm up time (up to 8 min).
  • Available only in specialized stores.
  • Not environmental friendly.
  • Poor color rendering.
HQI flood lamp

LED Floodlights

Constant improvements in LED technology has made LED floodlights more and more popular. Today’s LED floodlights are now in the fifth generation and thus offering the possibility to replace a halogen floodlight perfectly. The light output is already in a range which is adapted and also sufficient for indoor lighting.


  • Low energy consumption.
  • long lifetime.
  • High protection degree.
  • Instant on / off.
  • Instantaneous luminous flux.


  • Products quality various.
  • Higher acquisition costs.
ultra slim 80W led flood light

Conversion of the power of halogen (typical average):

  • Halogen floodlight 500 Watt => 150 Watt HQI metal halide floodlight
  • Halogen heater 500 Watt => 400 Watt Halogen ECO
  • Halogen spotlight 500 Watt => 50 Watt LED floodlight with 4,000 Kelvin
  • Halogen floodlight 500 Watt => 100 Watt sodium steam floodlight

Conclusion for the comparison of the floodlights

Clearly, halogen lamps can only be used to a limited extent! LED floodlights can be used for lighting in many areas, like classic path lighting. Smaller places, corridors and even parking lots can be optimally illuminated. Before buying LED lamps, special attention should be paid to the design, the cabling of the chip and the processing, since there are optically very many LED floodlights on the market, but the details bring considerable differences.

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