The first step towards the optimization of energy consumption has been the classification of appliances according to their energy efficiency: today no one would buy a refrigerator, a washing machine, a TV if it were not in A grade (there are already commercially A+ and A++ grades), hence the step was short: apply the same logic to the buildings where we live.
The end user has become extremely sensitive to environmental issues and the impact that the use of fossil fuels continues to have on the global human habitat.
The mission of those who, like Air Clima, must meet the new demands, changes from "improve the comfort of people's lives" to "improve the comfort of people's lives with respect to the environment". It is not a change of slogan, but a radical transformation of the systems of heating/air conditioning that are proposed.