Some folk I know have a house with no less than 40 GU10 lamps (kitchen, bathroom, hallways) all rated at 25W which makes for a staggering 1KW.
I suggested that replacing the whole lot *now* with LEDs would pay for itself within a few months and reduce the amount of work involved in replacing them - one of 'em blows every few weeks, not surprisingly with so many involved.
They asked their tame electrician who (apparently) replied that LEDs would not be suitable. NB there are no dimmer switches involved.
The electrician doesn't get involved in buying or fitting replacements, so I can't see a motive for bogus advice.
Is there any valid reason for not dropping in a drop-in replacement LED lamp?