Energy efficiency

Energy efficiency today is a very exploited topic and as a beautiful story is sold everywhere, but do we really feel the benefits in our pocket and on our health? Do we really get what we paid for? Television ads and vendors persuade you to buy A+ or higher energy efficiency appliances, change old low energy lamps with energy efficient ones, or to use energy from the sun, earth, wind, waste water, etc. These are quite justified investments, but only if, the most predominantly cost in every building, costs for heating and cooling, are reduced before.