E2 Solution using Multi-heat source heat pump(Energy & Environment)
◦ Our multi-heat source heat pump uses hybrid heat sources of air & water, where as conventional heat pumps use a single heat source (air, hydrothermal, geothermal).
◦ E2 Solution has the world's first Heating, Ventilation, Air Conditioning (HVAC) technology that enables cooling, heating, and hot water supply with only one machine without an outdoor unit of air conditioner.

① As a Multi-heat source heat pump, efficiency up by over 50%
* Hourly heat production comparision : 462.6%(*1) improvement compared to boilers / 78.5%(*2) reduction in carbon emissions compared to boilers.
② World’s Top Efficiency (COP 3.7) (KITECH, 2018)
* Compared with COP(0.8~0.94) of existing boilers, efficiency up by four (4) times. / [REFERENCE, COP : Coefficient of Performance]
③ World's first prevention of frost sticking in winter without 4-way valve
* (eg. single air heat source heat pump) frost occurrence in the outdoor unit at subzero temperatures → Normal operation impossible (Rapid power consumption) → Continuity of work of melting the outdoor evaporator when frost sticking → vicious cycle of the rapid increase in power consumption regardless of heating.
④ Free production of condensed heated water by absorbing 100% of the waste heat in summer
* Prevention problems of outdoor unit of thermal radiation, fire from overheated, device falling.