Takagi Rinnai Natural Gas Boilers are generally the 1st choice for water heating needs in larger multifamily projects that include 35 or more units in a single building. They are well suited for installations in parking garage mechanical rooms, interior mechanical closets, or rooftop installations. The water heater portion operates just like any efficient gas water heater. But when space heat is required, a small pump circulates hot water through an air handler coil. A fan blows air across these coils, through the heating ducts and into the living space.
Combo systems are a natural for multifamily projects.
They require a fraction of the installation space of separate systems. Only the water heater needs venting, gas piping and combustion air. And since the air handler can be placed almost anywhere recessed in a wall or ceiling, dropped in a closet the need for ductwork is reduced. Combo systems are cost-efficient, low maintenance, safe and compatible with air conditioning equipment. Where It's Needed Zonal combo systems combine the efficiency of on-demand zonal heating with the economy of natural gas.