As all of the parts such as pump, 3-way valve, enlargement vessel, Command unit and electric powered movement and back-up heaters are contained inside the indoor device, there is not any require to install these separately by using a hydrosplit. Heat energy from the outside air is absorbed and stored https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/