As the many parts for example pump, three-way valve, growth vessel, Regulate unit and electrical move and back-up heaters are contained inside the indoor unit, there isn't a need to install these separately having a hydrosplit. The ECOMOD 290HT range of monobloc air source heat pumps are available three chassis https://getsocialsource.com/story5900950/the-greatest-guide-to-r290-air-source-heat-pump