Look at the NEW Rinnai I-SERIES Plus™ family of Solo and Combi High-Efficiency Condensing Gas Boilers that are Built for the PRO, by the PRO™. The perfect combination of reliability, technology and performance in one compact unit, the Rinnai I-SERIES Plus™ Combi Boilers are one of the few that deliver simultaneous domestic hot water and space heating. They feature 4 built-in zones for better comfort levels and 7 heating reset curves (6 standard, 1 custom) for consistent temperatures. Natural Gas

Rinnai has a full range of Commercial and Residential Boilers to meet every need! Our RCB·Series™ Commercial Boilers are available as both Floor-Standing or Wall-Hung units. A wide range of models are available – from 301K, up to 1MM BtU input – which can be cascaded to deliver up to 8MM BtU. With amazing energy saving performance of up to 98, thermal efficiency, and an industry-leading 10-year non-prorated warranty, they easily outperform other boilers in their class. Learn more about RCB·Serie

Save BIG with Rinnai's Q1 Contractor Rebates! Now until March 31, 2026, take advantage of these amazing promotions! SENSEI™ RX / RXP & RE•Series™ RE / REP Tankless Water Heaters 👉 $150 for each RXP or REP unit (comes with a built-in recirculation pump) 👉 $100 for each RX or RE unit Demand Duo® Hybrid Commercial Water Heating Solutions 👉 $250 for each Demand Duo® - H-SERIES or R-SERIES 👉 $500 for each Demand Duo® 2 RCB· Series™ Wall-Hung Commercial Boilers 👉 $250 for each RCB Wall-Hung Comme