If you are looking for low energy replacements for your existing E27 light bulbs then the chances are you are going to enter into what I like to call 'comparison mode.' Simply put, you are going to begin comparing your existing light bulbs with their low energy equivalents in order to determine how much better they are. Everyone does it, but the problem is not everyone does it properly. We have prepared this article to illustrate the points of comparison between an E27 LED Bulb and its 50 watt equivalent to give you a helping hand.
The first thing you are going to compare is wattage. This is always the first thing everyone looks for as it immediately tells you how much power the bulb uses and therefore how cost-effective it is going to be to run. However, you should not be led into believing that wattage is indicative of brightness, especially with low energy LED Bulbs, as it is not. It is a measurement of power consumption. The E27 LED Bulb we are concerned with only uses 5 watts. It equivalent incandescent bulb uses 50 watts. The math is pretty simple, this equates to a 90 per cent energy saving.
So the E27 LED Bulb uses less watts, that that necessarily means it is brighter. You will be happy to know it does. To gauge and compare the brightnesses of these bulbs we need to look at something called the lumen output. Lumens are a measurement of the amount of visible light generated by a single light source. It is measured using a lumen metre. You will be surprised to learn that the lumen output on both of these bulbs is roughly similar. The lumen output for the E27 LED Bulb is between 390 and 430 lm, which is about the same as the 50 watt equivalent. That means they share an equal brightness, but the E27 LED uses significantly less power.
The next consideration is a lot less scientific; cost. Most customers are going to be immediately drawn to the sticker label, or up front cost, of the bulbs, which is perfectly natural. The E27 LED does cost more than its equivalent incandescent bulb, however, the true cost of these bulbs can only be calculated over time. Due to its higher energy use and short life span the 50 watt bulb will end up costing many times its originally value. The E27 LED Bulb uses much less energy and has a long life span of 30,000 hours, which means you will save money on your electric lighting bills and replacement costs.
Hopefully this article has give you some decent starting points on how to begin comparing and finding the best LED Light Bulbs to suit your purposes.