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    Millions of homes. One trusted name.

    As creators of New Zealand’s first electric continuous flow hot water system, Rinnai are a trusted household name for dependable, energy-efficient, hot water.

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    Black Rinnai Infinity A26 tankless water heater mounted on dark gray vertical paneled wall with connected pipe.
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    Just hot water

    Rinnai are a trusted name in hot water with quality hot water systems built for dependable performance and everyday wellbeing.

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    Rinnai hot water heater with black top and beige tank installed on outdoor wooden deck next to potted plant.

Rinnai

For over 50 years, Rinnai has supplied reliable hot water systems for New Zealand homes. From continuous flow units to efficient solar and heat pump systems, the Rinnai range is engineered for performance, energy efficiency and long‑term durability—giving you confidence in every install.

White Rinnai Infinity EF26 tankless water heater mounted on gray wall with copper pipes and green plant beside it.

Gas water heaters

Rinnai A Series gas hot water systems deliver continuous flow hot water on demand, providing a reliable supply that won’t run out. Building on Rinnai’s long-standing reputation for performance and efficiency, the A Series combines trusted technology with modern design, high energy efficiency, and easy installation and servicing—making it a dependable choice for New Zealand homes.

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Electric water heaters

Meet the future of hot water with the Rinnai Efinity—an all‑electric continuous flow hot water system delivering instant hot water on demand. Compact, energy‑efficient and reliable, it’s an ideal solution for modern installations where gas isn’t available, giving plumbers a flexible, future‑ready option on site.

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White Rinnai tankless water heater with digital display mounted on kitchen wall next to sink faucet.
Modern home exterior with cylindrical water heater on patio, overlooking green hills at sunset.

Heat pump water heaters

Rinnai HydraHeat® is a smart hot water heat pump solution that combines proven water heating expertise with efficient heat pump technology. Designed to significantly reduce energy use, HydraHeat® delivers reliable hot water while helping lower running costs and emissions. Built in New Zealand for local conditions, the system is easy to install and suitable for a wide range of homes, with eligibility for NZ Green Energy Loan support.

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Discover the benefits of Rinnai hot water

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Trusted for generations

Rinnai has been proudly delivering reliable hot water to New Zealand homes for over 50 years.

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Simple to install

Designed for easy retrofit and replacement, with solutions to suit every home.

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Rinnai expertise

Backed by decades of innovation and a reputation for quality you can rely on.

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Peace of mind

Feel confident with up to 12 years warranty on selected hot water systems.

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Visit your nearest plumbing branch

With more than 30 locations across New Zealand, there’s sure to be one near you.

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