Rinnai CHS19980HCXIN Hybrid Water Heating System, 199,000 BTU, 80 Gallon Tank

This Rinnai Demand Duo H-Series hybrid pairs a 199,000 BTU condensing tankless engine with an 80-gallon storage tank. It suits restaurants, apartment buildings and other commercial sites that need a steady supply through busy hours on natural gas.

Because the tankless engine does the heating and the tank only stores water, the tank avoids thermal stress, which extends its service life and lowers the chance of leaks. Individual components can be repaired instead of replacing a whole system. The DuoSmart digital controller manages set temperature and recirculation without an aquastat, and the system is Wi-Fi capable.

Installation is simplified by a factory-fitted gas dirt leg, ready electrical access and a preassembled condensate drain. A swivel gas flex line turns 360 degrees for easy alignment with the supply. The CU199 engine reaches 97% thermal efficiency, meets Ultra Low NOx requirements and carries ENERGY STAR certification. The system weighs up to 30% less than a comparable high-efficiency tank.

Highlights

• Hybrid tank-tankless design keeps thermal stress off the 80 gal tank

• CU199 condensing engine with 97% thermal efficiency

• Ultra Low NOx compliant and ENERGY STAR certified

• DuoSmart controller handles temperature and recirculation, no aquastat needed

• Concentric, twin pipe, room air or common vent options

• Wi-Fi capable and recirculation capable

Specifications

Good to know

• Gas-fired appliance: it must be installed, vented and commissioned by a qualified installer in line with local codes and the manufacturer's installation manual.