Minimising resource use is often counter-intuitive. For example, I moved into my present home fifteen years ago to find one of those slim wall-mounted WC cisterns that delivered a 3 litre trickle when the button was pressed. You had to flush it six times to get rid of a paper hanky. I replaced it immediately with an illegally modified high-level cistern that delivers 10 litres each flush, with a 2m head; powerful enough to drive an MP's fat wallet round the bend and into the downpipe. The water saving over 15 years is enough to supply a small African village.
The new Compulsory EU energy labelling regime is just taking hold. It's pointless. The factors people use when deciding a purchase of white goods are (1) dimensions - will it fit the space (2) finish - will it complement the decor and (3) capacity / speed / power / ease of use - will it make my life easier. The 'green' rating is nowhere. Which means our feudal lords are spending millions of our money in utterly pointless regulation; scrapping the energy labels would actually save more resources than printing them.
So for anyone still confused over energy labelling, here's what it means: