Using a heat pump instead of a boiler
A heat pump takes heat from an environment and converts it into heat you can use. You can warm up your house with it for example. Heat pumps are used more and more as a sustainable alternative to the traditional boiler. We often install energy efficient heat pumps that make use of sustainable refrigerants.
A heat pump system is practically a reverse cooler: heat is taken from the space inside the cooler, making it colder. This heat has to be released elsewhere. You can see this in your own home, in the tubes at the back of your refrigerator. When this concept is scaled up to industrial processes, making use of heat waste can save a lot of energy.