Revin­cus has devel­oped a regen­er­a­tive energy sys­tem in the form of a heat exchanger for res­i­den­tial and com­mer­cial prop­er­ties that can recover energy stored in the form of heat from a wide vari­ety of liq­uid media. The com­pany focuses on recov­er­ing heat from waste­water, espe­cially from gray water such as shower, wash­ing machine or dish­washer wastewater.