A mini-cut splits the action of a heating or cooling system to allow strange rooms to be controlled to strange temperatures… These are fantastic solutions that can entirely lower one’s weekly heating & cooling costs. Ductless mini-splits can lower weekly costs because one doesn’t need to set a temperature for the whole apartment or building if only one room is going to be occupied. Using a number of temperature sensitive elements & control units, the apartment or building can be divided into strange zones. The size & number of the zones are completely customisable based on the owner’s desires. Although greater zones will still require a lot of energy to change the temperature of relative to the outside conditions, the size is completely up to the owner, and more zones that are small in size can lower the energy costs in the long run because less energy is consumed to change the temperature of a small room. There is a trade-off in cost, however, because more zones mean more sensors & equipment to install, then in the long run, having each closed-off room as a zone is the most economical choice. Mini-cut infrastructure is implemented in many newly-constructed buildings right off the bat. The ductless nature of mini-splits also make them a fantastic choice for retrofitting homes that have older central heating & cooling infrastructure already installed. The only thing required for upgrade is a small drilled hole in the wall leading to where the outside refrigerant unit can be connected, however further, these types of systems can also be used on homes & buildings that currently have hydronic or radiant heating systems and older heating systems that might be using gas heat or oil heat.