For the longest time possible the lights in use have been HPS (High Pressure Sodium). These have been used in households and even commercial settings. They are not costly but they have a very short lifespan of about 2,000 hours. Some don’t seem to mind the lifespan of these bulbs because their price is not high so replacing them frequently does not seem like much of a cost. Doing a computation of the amount spent on replacements will however reveal that it is not such a cheap practice. LED fixtures will last for about 10,000 hours. This means that there will be very minimal replacements and this will lead to more savings over time.
The quality of light produced by these two fixtures is very different. Lumens are a measure of the amount of light that is produced by a fixture. A standard 30W LED bulb will give about 2880 lumens while an 110W HPS bulb will produce 6935 lumens. It should be noted though that an LED light consumes a third of the energy consumed by an HPS light. This is why the 30W LED and the 110W HPS are pitted against each other. The 250W HPS produces 21,000 lumens and the 60W LED produces 6240 lumens.
Varying color temperature
These figures may seem to work in favor of the HPS since they seem to be producing a lot of light. The difference with these two kinds of light is that the color temperature is different. The HPS lights are mostly yellow and have a color temperature of around 2,000K. Lights that use LED fixtures have a color temperature of 6,500K and produce pure white light. This means that LED lights produce lighting that is crisper as opposed to the dim glow from HPS fixtures. LEDs are able to light up an area much better and therefore lead to better vision whenever they are used.
Both of these fixtures emit some heat but how it is dispersed into the atmosphere is what makes the difference. HPS bulbs become hot and you can even feel it in the light beam produced if you get close to it. LED fixtures have a heat sink that absorbs the heat and directs it outside onto the area around the casing so that it does not damage the fixture. This keeps the light cool at all times such that you may think that no heat is produced.
One more advantage that comes with LED fixtures is that they can also be used for solar lighting. The idea behind solar lighting is to save energy and so the proper type of fixture should be energy efficient. LED lights use a minimum amount of energy yet they produce a good amount of quality light. HPS use a lot of energy and so go against the idea of saving energy.
These two types of fixtures are hardly comparable even though they are both used for lighting. LED fixtures are much more efficient and have been proven to perform their task very well.
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