Rinnai Support 24/7/365

Endless Quality and Support

A World of Support Behind You

Beyond manufacturing the highest quality products, our people stand behind all that we make—before,during and long after installation.

  • 24/7/365 technical support for professionals
  • National network of independent dealers
  • On-staff engineers who can assist with choosing the right products and sizes

Customer Care team at 1-800-621-9419. We are available Monday through Friday, 8 a.m. to 8 p.m. EST. 

The Highest Standards of Quality

Rinnai employs more than 600 research and development engineers, all focused on uncompromising quality in design and manufacturing. Advanced automation and precision assembly processes have made our manufacturing facilities an industry model for efficiency. Throughout the world, our standards for quality remain unsurpassed.

  • Every product undergoes live testing before shipping
  • One of the few tankless water heater manufacturers with its own state-of-the-art Canadian Standards Association(CSA) Certified Testing Laboratory, including CSA accredited lab technicians
  • All products have been approved by the CSA and adhere to the strict standards of the American National Standards Institute (ANSI)

Learn more about why you should partner with Rinnai 

100 Years of Smart Comfort

For nearly a century, Rinnai has been fiercely committed to delivering a smarter kind of comfort. With headquarters in Japan and a network of 20 subsidiaries and 86 sales offices in 13 countries, this commitment has made us one of the world’s largest gas appliance manufacturers.Our value-added products continue to stay in step with the demands of a changing world.

Learn more about our history 


Federal Tax Credit Document

If you purchased a qualifying Rinnai product you may be eligible for a Federal Tax Credit. Click to download the 2021 Rinnai Manufacturer's Statement for Federal Tax Credit. Submit this letter with your proof of purchase when filing your taxes.