Electronic – Do I need to replace the transformer when switching from halogen to LED

led

Total noob question.

I have MR16 halogen downlights and want them replaced with LEDs. Someone told me that, if I simply replace the bulbs but not the transformer, then the power draw will still be the same (or perhaps not as improved as if I get new transformers or replace with newer GU10s with an integrated transformer).

Is this correct? Or nonsense? Am I over simplifying it and more information required?

Thanks.

Best Answer

The answer is, "maybe".

The issue is that MR16 halogens can come in one of 3 voltages - 12, 24, and 120 volts. You need to check to determine what your system uses. Then you must check to make sure your LED bulbs use the same voltage. If not, you have a choice: change your choice of LED bulb, or change the voltage. The latter may involve changing transformer, or possibly eliminating it altogether. It all depends on what you've got.