Hey all. \n\nMy first post so please be nice!\n\nCurrently most of our downlighters are Halogen MR16 and a number have failed because the electrician didn't use fire rated enclosures or secure the connblocks down so the blocks over heated and shattered. \n\nHow the house didn't burn down I'm not sure. \n\nI have replaced some (along with their transformers) with LEDs. I am now onto replacing the rest but plan to swap the MR16s out for mains voltage GU10 LEDs. \n\nSo here's the question: Can I just replace the lamp and lampholder or should I replace the housings as well? I am hoping because LEDs pump out less heat they should need be OK.\n\nThanks for all the replies.