The Gold Standard in Water Heaters
Discover the Unmatched Efficiency of Rinnai, North America's #1 Selling Tankless Water Heater, Now Available at Marks Supply!
Tankless Water Heating - The Next Generation
SENSEI® RX Series is a top-rated water heater, unmatched in efficiency and comfort. Install it indoors or outdoors, using either natural gas or liquid propane. Plus, its quick Bluetooth® setup offers hassle-free installation, ensuring limitless hot water and a smarter design.
Boiler Solutions For All Your Needs
The Rinnai I-Series is a compact unit, brilliantly merging reliability, technology, and performance. Whether you need heat-only or combination models, it ensures continuous hot water and home heating. Its small size facilitates quick installation in both new and existing homes. And its cutting-edge technology features a proportional valve for uninterrupted simultaneous delivery of domestic hot water and central heating.
Commercial-Grade Performance & Reliability Any Business Can Depend On.
The condensing CX Models achieve the highest standards of reliability and efficiency. This efficient tankless water heater comes standard on the Tankless Rack System and is also available in individual units.
Faster Setup
Installing PROs can connect to the SENSEI CX with their smartphone via Bluetooth® for quick, simplified set-up and registration without needing to connect to WiFi.
Highest Efficiency Available
CX models offer unsurpassed efficiency and energy savings with 97% thermal efficiency* and are Ultra Low NOx compliance. *Not AHRI certified.
Efficient Supplemental Heating For Homeowners
Rinnai offers various models for whole-home heating with quick and flexible installation. Our modulating technology provides energy-efficient heating, adjusting to minute temperature changes. Safety features include automatic shutdown for overheating or power issues, with added surge protection.
Rinnai residential and commercial solutions
available at Marks Supply