With Rinnai tankless water heaters, you never run out of hot water; Rinnai tankless can last twice as long as tanks, making them a better investment as well as increasing the value of your home; Rinnai tankless save money by using less energy and can fit almost anywhere in your home, saving valuable space; Tankless 101

Rinnai tankless hot water heaters are built to commercial-grade standards and each individual unit is tested for quality. So you may never need our industry-leading warranty and legendary support for the most important appliance in your home.

No-Hassle Hot Water, When and Where You Need It. With a tankless water heater, your home's cold water is heated only when you need it, and it stays hot until you're done using it. This results in a limitless hot water supply and little to no wasted energy usage. Flame ignites and heats two heat exchangers

Find your ideal Rinnai tankless water heater system; simply take a few minutes to answer questions about your home and we'll recommend a solution to best fit your needs.

Built to commercial-grade standards, Rinnai tankless water heaters are individually tested, backed by the industry's best warranty, and compact enough to fit any space.

Rinnai Electric Heat Pump Water Heaters | Ground-Breaking, Sustainable, Zero Emissions The REHP Series delivers consistent hot water by extracting heat from the surrounding air and converting it to hot water while producing zero emissions.

The SENSEI® RX Series is the most advanced Condensing Tankless Water Heater on the market that sets the standard for efficiency at 0.98 UEF and delivers the ultimate in lifestyle comfort, smart design, and unlimited hot water.

Rinnai tankless water heaters provide an endless supply of hot water (24/7) that is practically instantaneous and keeps your energy bills down. Plus, you don’t need a large space to accommodate it. A smaller footprint dedicated to the hot water heater allows you to place your tankless water heater where you want it (indoors or outdoors ...

Ensure You'll Never Wait for Hot Water. Intelligently enable recirculation in your home to have hot water faster when you need it. Rinnai tankless water heaters have built-in pumps with Smart-Circ™ Intelligent Recirculation™ that learns your schedule. No dedicated return line, no problem.

Commercial Water Heating Solutions. We start with completely custom, 100% guaranteed accurate system sizings, returning them within 48 hours of request. Add that to our rigorous product testing before shipping and the industry's leading warranty, and you'll see why Rinnai is the complete commercial water heating solutions for any business.