I like the minimalist look of LED downlights but am concerned about the energy impact – losing heating and cooling through lots of holes in the ceiling. We're in Melbourne so we get the extremes - cold in winter and hot in summer! I know you cannot insulate over the light fittings as that would be a fire risk. Anyone got any thoughts as to how you can use downlights but still be energy efficient? I've seen pictures of track lighting in mags but to me it seems a little old fashioned.
I've always been under the assumption that due to the low power output of LED lights that heat isn't too much of an issue. However for peace of mind there are always downlight covers that you can purchase to give a bit of spacing between the downlight fitting and any insulation in the roof.
I've also known of people using old canned food tins as a very low budget D.I.Y. alternative to a downlight cover as well. Just need to poke a few extra ventilation holes here and there.