Cost savings is the biggest reason why people switch. Mini splits and heat pumps are designed to be very efficient and operate without the need for repairs for a long time. So, not only will you save on energy bills, but you will also save on repair costs over the life of your system. Ductless units are also desirable for their ease of installation. Not having to install ductwork with a central HVAC system leads to huge cost savings on parts and labor. Additionally, ductless units are easily installed in buildings that weren't designed to accommodate central HVAC units.