Why Rinnai’s HydraHeat® Is NZ’s Smartest Hot Water Upgrade

Smarter Hot Water for a Smarter Home

If you’re building a new home or upgrading your existing hot water system, energy efficiency, performance, and sustainability are likely top of mind. That’s why the new Rinnai HydraHeat® Hot Water Heat Pump range, available through ATL, is generating major attention across New Zealand.

Engineered locally and already proven across the Tasman, HydraHeat® offers next-gen performance while dramatically reducing power bills and carbon output — all with the backing of one of NZ’s leading expert installers: ATL Electrical.

And cost doesn’t have to be a barrier. We have partnered with Q Card to offer flexible, interest-free finance on HydraHeat® installs — making it easier than ever to invest in a future-proof home. Plus, homeowners may also be eligible for government-backed green home loan funding through participating banks.

Why It Matters: Energy Use & Comfort Are Changing

Water heating accounts for around 30% of an average NZ household’s energy consumption. As power prices rise and environmental expectations grow, Kiwis are seeking smarter, cleaner alternatives that don’t compromise on convenience or comfort. Enter hot water heat pumps — the most efficient option available.

HydraHeat® represents the next leap forward: it’s NZ-designed, eco-conscious, and quiet enough to keep the neighbours happy — without sacrificing performance.

The Top 5 Reasons to Choose HydraHeat®

1. Massive Energy Savings — Up to 75%*

HydraHeat® is one of the most energy-efficient hot water solutions available in NZ. By drawing heat from the air (even in colder climates), it uses a fraction of the electricity compared to traditional electric or gas cylinders.

With gas prices continuing to skyrocket across New Zealand, many households are seeing steep increases in their monthly energy bills. Switching to a high-performance heat pump system like HydraHeat® offers a powerful way to reduce reliance on costly fossil fuels and future-proof your home against ongoing price hikes.

This results in up to 75% less energy use* for water heating, significantly lowering power bills — especially beneficial for larger families or homes with high demand.

Less energy. Less cost. Same comfort.

2. Engineered in NZ for NZ Conditions

Unlike many imported systems, HydraHeat® has been designed specifically for New Zealand’s climate and water use habits.

Its thermal stratification technology ensures hot water is available rapidly from the top of the tank — even while the bottom continues to heat. This means you get hot water fast, without waiting for the full tank to reach temperature.

Plus, built-in frost protection and defrost functions ensure year-round reliability in colder regions.

3. Retrofit-Ready or New Build Compatible

HydraHeat® isn’t just for new homes — it’s perfect for upgrades too. The split system design allows for flexible installation with indoor or outdoor tanks and minimal disruption during retrofit projects.

Whether you’re replacing a traditional cylinder, building your dream home, or planning an energy-efficient renovation, HydraHeat® have solutions that offer seamless integration with existing plumbing and layout configurations.

4. Installed by Experts – ATL

One of the key advantages of choosing HydraHeat® through ATL is having peace of mind with certified, local expertise.

ATL is one of New Zealand’s first authorised HydraHeat® installers, meaning:

• We’re trained directly by Rinnai

• We know the system inside and out

• We help you assess eligibility for green financing or assistance with finance through our Q Card partnership

• We offer clean, fast, professional installs and support

5. Quiet, Sustainable & Built to Last

The HydraHeat® range is a low-carbon, low-noise system that prioritises both environmental impact and everyday comfort. It uses just 150g of R290 natural refrigerant, a sustainable alternative to synthetic options.

The quiet operation also means it won’t disturb neighbours or dominate your home’s acoustic environment — ideal for residential installations.

Combined with rugged NZ-ready design, you get a system that’s built to last in both urban and rural environments.

Ready for a Smarter System?

HydraHeat® isn’t just another hot water system — it’s an intelligent, sustainable upgrade built for today’s homes. With huge energy savings, flexible installation, and NZ-specific performance, it’s the obvious choice for forward-thinking homeowners.

ATL makes it easy. We provide personalised advice, handle install and support, and help you make the most of this future-forward system.

Get in touch with ATL today to see which HydraHeat® product is right for your home.

*When a comparison calculation is made to a 250L standard electric hot water cylinder when heating water from 19°C to 55 °C