The new Bosch Hydronic Air Handlers create a more efficient, compact and advanced home heating system. By pairing the new air handler with Bosch Greentherm Condensing Tankless Water Heaters, homeowners can benefit from a more efficient heating system with a virtually endless supply of domestic hot water. The new air handler can replace furnaces with a ducted system, eliminating the need for a gas pipe, venting, and fresh air intake required for furnaces. It can also be used with 3-inch diameter high-velocity mini duct systems in retrofit applications, as well as in new construction. Combining both the Bosch Hydronic Air Handler and .95 EF-rated Greentherm Tankless Water Heaters results in an ultra-efficient heating and domestic hot water system.