You no doubt already know the colourful labels from
refrigerators, washing machines and vacuum cleaners.
Now heat pumps are also required to carry the EU energy
he low-down on labels: energy efficiency ratings for individual
appliances range from very good (A++; from 2019: A+++) to
unsatisfactory (G), with a total of nine different levels. It’s now
possible to compare different heat generators directly with each
other. No sweat for the heat pump, though: it easily achieves top
ratings of up to A++/A+. By contrast, heating boilers (oil, gas,
biomass) are rated A at best, and as low as C or D in some cases.