> Everything sold in last fifteen years is A class or better for efficiency.

In case you are unaware: The European efficiency rating system is in fact percentile-based on some fictional reference appliance which is adjusted every few years [0].

A fridge with an "A" rating you bought 15 years ago would not get an A rating today.

(This sounds weird, but fights the problem that when the system was based on absolute values instead of percentiles, nearly fridges started being rated A, A+, A++ or A+++ to the point that the scale was very opaque to consumers.)

[0] https://en.wikipedia.org/wiki/European_Union_energy_label#Re...