Mini-split systems work by circulating refrigerant between the indoor and outdoor units. The refrigerant absorbs heat from the indoor air, cooling it down. The cooled air is then circulated back into the room. When the mini-split system is in heating mode, the process is reversed. The outdoor unit extracts heat from the air and transfers it indoors, where it is used to heat the room. If you ant to install a mini-split system in Baytown, TX, contact our professional plumbers.