Hydron Module Commercial Console Series ERC models offer an energy-efficient, ductless heating and cooling solution when individual, quiet control of the heating and cooling system is a priority. The Console Series is a good choice for water loop or geothermal applications, as it has no through-the-wall penetrations, and it boasts a small cabinet design. These models are a fit for schools, offices, and other structures where ductwork will not be feasible and quiet operation is necessary.