Rinnai Enviro Series Instantaneous Gas Hot Water System Review – 7-Star Efficiency & Sustainable Performance

Apr 21, 2023

The Rinnai Enviro Series has become a go-to choice for homeowners wanting efficient, environmentally conscious hot water. With 7-star equivalent efficiency, condensing technology, and three size options (16L, 26L, and 32L), it suits everything from small homes to large households.


🔑 Key Features

✅ 1. Exceptional Energy Efficiency

  • Up to 97% thermal efficiency thanks to condensing tech.

  • Recycles heat from flue gases – reducing waste and running costs.

  • Outperforms most electric and older gas storage systems in energy use.

✅ 2. Versatile Capacity Options

  • 16L – Ideal for 1 bathroom

  • 26L – Perfect for 2–2.5 bathrooms

  • 32L – Handles 3+ bathrooms

  • All models are continuous flow systems, so hot water never runs out.

✅ 3. Slimline, Coastal-Ready Design

  • Compact and wall-mountable for outdoor install.

  • Corrosion-resistant build makes it ideal for coastal homes.

  • Built-in pressure relief valve and neutralized condensate drainage.

✅ 4. Safety & Temperature Control

  • Factory pre-set at 50°C or 60°C to meet AS3500.4 safety regs.

  • Adjustable up to 75°C.

  • Puretemp™ tech keeps temps stable – no scalding surprises.

  • Anti-frost protection down to –30°C.

✅ 5. Environmental Benefits

  • Lower greenhouse emissions vs traditional systems.

  • Compatible with solar for boosted savings and green impact.

  • Consider pairing with a heat pump hot water system for maximum efficiency.

✅ 6. Superior Heat Exchanger Quality

  • Stainless steel exchanger = long-lasting and corrosion-resistant.

  • Excellent energy transfer and pressure control.

  • Backed by a 12-year heat exchanger warranty.


💰 Cost Considerations

Upfront Cost

  • Higher than basic models, but pays off with energy savings.

Long-Term Savings

  • Lower power bills + low maintenance = strong ROI.

  • May qualify for rebates depending on your location.


🔧 Maintenance & Durability

  • Stainless steel internals = minimal corrosion risk.

  • Built for 10–15+ years of use.

  • Maintenance-friendly with easy access and drainage.

🛠 Maintenance Tips

  • Clean air filter regularly.

  • Flush system to remove sediment.

  • Check relief valve and inspect for leaks every 6–12 months.

  • Always use a licensed plumber.


👨👩👧 Suitability by Household Size

🏠 Small Homes

  • 16L model is space-saving, ultra-efficient, and perfect for 1 bathroom.

🏡 Medium Homes

  • 26L model handles 2–2.5 bathrooms with ease.

🏘 Large Homes

  • 32L model can run 3+ taps at once – perfect for busy mornings.

🔁 LPG or Natural Gas

  • Available in both fuel types for regional or metro setups.


👍 Pros & Cons

Pros:

  • 7-star energy efficiency

  • Solar-compatible

  • Coastal-ready design

  • Multiple capacities

  • Long 12-year exchanger warranty

  • Puretemp™ stability and advanced safety

Cons:

  • Higher initial cost

  • Requires licensed installation

  • Solar integration may need professional setup


🧠 FAQs

1. What is the efficiency rating of the Rinnai Enviro Series?
Up to 97% thermal efficiency – equivalent to 7 stars.

2. Can I use it with solar?
Yes, it’s solar compatible, allowing integration with solar hot water systems.

3. What’s the warranty on the heat exchanger?
A 12-year warranty covers the stainless steel heat exchanger.

4. Is it suitable for coastal areas?
Yes – corrosion-resistant materials make it ideal for coastal environments.

5. What sizes are available?
Choose from 16L, 26L, or 32L, depending on your home’s needs.


✅ Final Verdict

If you’re after a future-proof, environmentally smart, and high-performing hot water system, the Rinnai Enviro Series is hard to beat.

✔ 7-star efficiency
✔ Endless hot water
✔ Smart safety features
✔ Corrosion-resistant build
✔ Suitable for solar integration


🚿 Ready for Installation?

At JR Gas & Water, we’re your local experts in Rinnai Enviro Series installations across Brisbane, Gold Coast, Ipswich, Logan, and Redlands.

👉 Get a quote online now and enjoy fast, professional service from Queensland’s Best Plumbers & Home Care Store 2023–2025.


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