Light-emitting diodes (LED) are increasingly replacing conventional bulbs in public and industrial lighting systems. When replacing an HQL bulb of small to medium power (50W - 150W), the choice is often between an LED retrofit bulb, or a complete LED luminaire.

The lower price and the fact that it is much easier to retrofit an LED often speak in favour of this option. However, there are always those who are critical of retrofit technology and put forward well-founded reservations, although in many cases they also cling to prejudices that exist as a result of good lobbying.

This article deals with the advantages and disadvantages of retrofit technology, and is intended to help you make a more objective decision as to where this approach makes sense, and where it does not.

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