Suitable applications include:

  • Hotels and motels
  • Apartment blocks
  • Student accommodation
  • Shower blocks
  • Commercial kitchens
  • Commercial laundries


We recommend the installation of a Demand Duo system when hot water consumption has a predictable volume. This is usually based on the number of people living in a particular building and their hot water usage or industrial machines that require regular peaks of water.

The Demand Duo unit is often used on flow and return systems that distribute the water around a building.


The product information on this website (comprising product brochures, warranty information, installation manuals, diagrams, specifications and representations) relates to current products. This information may be different for superseded products. For superseded products please contact Rinnai to confirm product information.


Where to buy?

You can use the store locator on our website to find your closest store.

How do I contact Rinnai?

You can contact us at 1300 555 545 or email us using the “contact us” form on our website.

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