Upgrade Your Home; Upgrade Your Life

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.

Tankless Benefits

Looking to learn more?
Visit our Tankless 101 page
for deeper information.

The Right Solution for Every Need


Sleek, modern design and a range of features and benefits to fully satisfy the hot water demands of larger homes.

  • ENERGY STAR® Certified
  • Highest Water Output Options
  • Advanced Features and Design

Tank/Tankless Hybrid

The smart choice when it's time to replace a standard tank. Rinnai's Demand Duo® combines tank and tankless technology and offers a longer lifespan.

  • Energy Smart and Efficient
  • Flexible Installation Ideal for Tank Replacement
  • Lasts Longer than Traditional Tank


  • Demand Duo®
  • Condensing
View Models

Compare Tankless Models

Uniform Energy Factor
ENERGY STAR® Qualified
Built-In Recirculation Pump
Quick-Access Services
Wi-Fi Capable (module sold separately)
Condensing Tankless Water Heaters
0.93 0.91-0.93 0.85-0.90
CHS13080H H-SERIES Condensing +80 gallon storage
Professional Installation Recommended

Get the best product, professionally installed and maintained by the best — only from our PRO Network.