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Rinnai InfinityB16 Natural Gas Hot Water System

The Rinnai 16L hot water system is ideal for homes with up to 1-7 people. Built tough with a NA tank and backed by a 10-year warranty, it's a reliable, efficient choice for everyday hot water.

🔥 Quick Specs & Benefits

  • 👥 Recommended Household Size: 1-7 people
  • 📏 Height: 571 mm
  • 📐 Width: 356 mm
  • 🔇 Noise Level: NA dB
  • 🌍 Made In: Japan
  • 🛡️ Main Cylinder Material: NA
Was $1,149.00, Now $909.00
🔥 Limited Stock: Only 5 left — order soon!
🚛 Free shipping with code "InstalledToday" at checkout.
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  • Verified Reviews: Rated 5 stars by real Australian customers
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Installed Today
Not sure if you need installation or a valve kit?

Answer a few quick questions and we will point you to the best order option before checkout.

Step 1 of 6
What do you need?
Choose whether you want supply only, supply + installation, or want help deciding.
Are you replacing an existing hot water system?
This helps us work out whether your order is likely a straightforward replacement or may need extra parts.
Are you replacing an identical system in the same location?
Same system type, similar size, and no relocation. If not, we will recommend a valve kit as the safer starting point.
Does your current installation meet current compliance requirements?
If no or unsure, we will recommend a valve kit or additional works as the safer starting point.
See what a compliant installation usually needs

Compliance items will change depending on the product type you are viewing.

    When would you like installation?
    Choose your preferred installation speed. We will try to preselect the closest matching install option below. If you want a specific business day, select that option and we will map it to the Same-Day / priority install option where available.
    Are you in Greater Brisbane / Gold Coast?
    Professional installation is only available in our current service area. Outside this area, we can still supply the product and valve kit if needed.
    Installed Today
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    Select the extras you want below. Installation timeframes and matching add-ons can be added before checkout.

    What’s included in standard installation?
    Select installation to view what is included for this product type.
      What add-ons do you need?
      Choose the options you want to add with this order.
      Delivery Check
      Required to confirm service area
      Where should we deliver?
      Enter your postcode below so we can confirm availability in your service area.
      Tax included. Shipping calculated at checkout.

      * Requested element size may come delivered separately to system for electric systems - All units supplied with factory with 3.6kW


      **Where a unit supplied is capable of supplying more than 50°C, a tempering valve must be installed on the property or purchased with the order.

      Compact. Efficient. Reliable.

      🔥 The Perfect Hot Water Solution for Small Homes & Apartments

      Looking for a sleek, energy-efficient hot water system for single-tap use? The Rinnai B16 is a 16L continuous flow gas hot water system designed to deliver unlimited, on-demand hot water without wasting energy. Whether you’re running a shower, filling the kitchen sink, or washing dishes, the Rinnai B16 ensures consistent temperature and efficient water flow every time.

      Compact & Lightweight – Fits in tight spaces6.2-Star Energy Rating – Lower running costs & higher efficiencyContinuous Flow – Never run out of hot waterJapanese Quality Design – Reliable & long-lasting performanceCompatible with Controllers – Precise temperature control

      💡 Enjoy endless hot water while conserving energy!

      🚀 Key Features & Benefits

      1️⃣ High Energy Efficiency – Save on Running Costs!

      The Rinnai B16 is an energy efficient solution that boasts an impressive 6.2-star equivalent energy rating, making it one of the most efficient gas hot water systems in its category.

      Heats water only when needed – No standby energy lossLower gas bills compared to storage systemsEco-friendly & cost-effective for long-term savings

      💡 Enjoy hot water without breaking the bank!

      2️⃣ Compact & Lightweight – Fits Anywhere!

      Measuring just 571mm (H) x 356mm (W) and weighing only 14kg, the Rinnai B16 is ideal for homes with limited space.

      Wall-mounted for a clean, clutter-free installation
      Perfect for apartments, townhouses & small homes
      Discreet external installation keeps your space tidy

      💡 A small unit with big performance!


      3️⃣ Continuous Flow – Hot Water On Demand

      Unlike traditional storage tanks, the Rinnai B16 heats water only when needed, ensuring endless hot water supply without storage limitations.

      No waiting for water to heat up
      Never runs out – Perfect for long showers
      Instant response with reliable water pressure

      💡 Enjoy uninterrupted hot water, even during peak times!


      4️⃣ Puretemp™ Technology – Ultimate Temperature Control & Safety

      The Rinnai B16 features Puretemp™ temperature stability technology, ensuring precise temperature control for safety and comfort.

      No unexpected temperature fluctuations – Safer for kids & seniorsController compatibility – Set & maintain your ideal water temperatureNo water flow restrictors needed – Ensures a smooth, steady stream

      💡 Stay in control of your water temperature with pinpoint accuracy!

      5️⃣ Reliable & Durable – Built for Australian Conditions

      Designed with superior Japanese engineering in a high tech facility, the Rinnai B16 ensures long-lasting reliability with a full copper heat exchanger for enhanced durability.

      12-Year Warranty on Heat Exchanger – Built to lastWeatherproof external installation – Tough against harsh Aussie climatesHigh-quality materials reduce maintenance & servicing costs

      💡 Peace of mind with a trusted brand & solid warranty!

      🌿 Environmental Advantages – Eco-Friendly Hot Water

      The Rinnai B16 hot water system is designed with the environment in mind. Its energy-efficient design significantly reduces greenhouse gas emissions, making it an eco-friendly choice for conscientious homeowners. By heating water only when needed, the system conserves energy and minimizes running costs, ensuring you get hot water without unnecessary waste. Additionally, the system’s compatibility with low-flow shower heads (WELS) helps reduce water waste and promotes water conservation. With an impressive 6+ star efficiency rating, the Rinnai B16 stands out as an excellent choice for those looking to reduce their environmental footprint.

      Reduces greenhouse gas emissions – Eco-friendly operationHeats water only when needed – Conserves energyMinimizes running costs – Saves money over timeCompatible with low-flow shower heads – Promotes water conservation6+ Star Efficiency Rating – Top-tier energy efficiency

      💡 Choose the Rinnai B16 for a greener, more sustainable home!

      📊 Control and Monitoring – Stay in Command

      The Rinnai B16 hot water system features advanced control and monitoring capabilities, allowing homeowners to stay in command of their hot water usage. The built-in temperature control with display and stability control ensures precise temperature management, preventing scalding and ensuring safe water temperatures for all household members. The system also includes a status operation monitor that displays performance metrics and alerts you to any issues that need attention, allowing for swift resolution of potential problems. With universal hot water controllers available, you can enjoy features such as the bath fill function and voice prompting, making it easy to manage your hot water usage with convenience and precision.

      Built-in temperature control – Prevents scalding and ensures safetyStability control – Maintains consistent water temperatureStatus operation monitor – Displays performance and alertsUniversal hot water controllers – Customize your hot water experienceBath fill function and voice prompting – Enhanced user convenience

      💡 Stay in control of your hot water with the Rinnai B16’s advanced features!

      🔧 Installation & Compatibility – Easy Setup

      🛠 Standardized Water & Gas Connections – Simplifies installation, including compatibility with natural gas systems like the Rinnai B16 Natural Gas Hot Water Heater 🛠 Compatible with Low-Flow Showers (3 Star - 7.0 to 9.0 L/min) – Eco-friendly performance, ensuring stable temperature and reduced water usage with a low flow shower head 🛠 No Restrictors Required – Enjoy strong, steady water flow 🛠 Compatible with Rinnai Controllers – Customize temperature settings for different taps

      💡 Professional installation recommended for best performance & compliance.

      🛠️ Maintenance and Support – Hassle-Free Ownership

      The Rinnai B16 hot water system is designed for hassle-free ownership, with a focus on maintenance and support. Its high-quality Japanese design and manufacturing ensure long-lasting and reliable performance. The quick connect system for water controller cables makes installation and maintenance straightforward and efficient. Additionally, the system comes with a comprehensive warranty, including a 3-year parts and labour warranty and a 10-year heat exchanger warranty. For domestic applications with two or more water controllers installed, an optional 5-year extended heat exchanger warranty is available, providing homeowners with added peace of mind.

      High-quality Japanese design – Reliable and durableQuick connect system – Easy installation and maintenanceComprehensive warranty – 3-year parts and labour, 10-year heat exchangerOptional extended warranty – Additional 5 years for heat exchanger

      💡 Enjoy hassle-free ownership with the Rinnai B16’s robust support and maintenance features!

      💰 Pricing & Running Costs

      Unit Price: ~$1,050 (varies by supplier)
      Installed Cost: ~$1,500-$2,000 (including professional installation)
      Running Costs: Lower than traditional storage systems due to on-demand heating

      💡 Invest in an energy-efficient system that saves money over time!


      📢 Final Verdict – Is the Rinnai B16 Right for You?

      The Rinnai B16 Continuous Flow Gas Hot Water System is a compact, efficient, and reliable solution for small households or apartments that require on-demand hot water.

      Best for:
      Small homes, apartments & townhouses
      Households needing hot water for one tap at a time
      Eco-conscious homeowners looking for lower running costs
      People who want a long-lasting, low-maintenance system

      Consider other options if:
      ❌ You need hot water for multiple taps at the same time – A larger system may be better
      ❌ You require an indoor installation – The Rinnai B16 is external only
      ❌ You want a solar or electric system – This unit is gas-powered only

      💡 Bottom Line: The Rinnai B16 is a highly efficient, reliable, and space-saving hot water system that provides endless hot water while keeping energy costs low!


      🛒 Order Your Rinnai B16 Today!

      Fast & Reliable Australia-Wide Shipping
      Professional Installation Available
      Competitive Pricing & Secure Checkout

      💧 Upgrade your home with the Rinnai B16 – Efficient. Compact. Reliable. 🚀

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        Hassle-Free Installation – Done Right by Trusted Experts!

        Need professional installation? We’ve got you covered! Our optional installation service connects you with our network of certified, trusted contractors, ensuring a smooth and stress-free setup.

        How It Works:

        🔹 Step 1: Select Installation Service
        Choose to include professional installation when purchasing your new system.

        🔹 Step 2: Pay for Installation Upfront
        Simply add the installation service prior to adding your product to cart —no hidden fees, no surprises.

        🔹 Step 3: We Assign a Certified Contractor
        We’ll match you with a licensed, experienced contractor from our network to handle the installation.

        🔹 Step 4: Schedule Your Installation
        The assigned contractor will contact you directly to arrange a convenient time for installation.

        🔹 Step 5: Direct Support When You Need It
        For any installation-related questions, your contractor is your first point of contact. If any issues arise, our team is here to help.

        🚨 Please Note: Installed Today supplies the product and connects you with a certified contractor for installation.

        We’re committed to delivering top-quality products and facilitating a seamless installation experience. Have product questions? Reach out to us anytime! 🔥

        Experience the "Installed Today" Difference with Our Verified Installers

        When you choose "Installed Today" for your installation needs, you're not just getting a product; you're gaining access to a network of rigorously verified installers dedicated to providing you with an exceptional service experience. Here's what you can expect when you opt for an installation by an "Installed Today" verified installer:

        Professional and Efficient Service

        • Prompt Communication: Our verified installers will contact you within 2 business hours of receiving your order details to confirm and begin scheduling your installation at the earliest convenience.
        • Expert Installation: All "Installed Today" installers are highly skilled and qualified, ensuring your product is installed according to the highest industry standards and specific regulations in your area.
        • Clear and Professional Communication: From the moment they receive your order until the completion of your installation, our installers maintain clear and professional communication, providing you with all necessary information regarding your installation.

        Peace of Mind

        • Insurance and Liability: Every "Installed Today" verified installer maintains comprehensive insurance coverage, giving you peace of mind knowing you're protected throughout the installation process.
        • Warranty and Quality Assurance: Enjoy a warranty on your installation, guaranteeing rectification work at no additional charge in the unlikely event of any deficiencies. Our installers strive to achieve a minimum 4.5-star average rating across major review platforms, reflecting our commitment to excellence and customer satisfaction.

        Customer-Centric Policies

        • Customer Dispute Resolution: In the rare event of a dispute, our installers are committed to acknowledging and initiating the resolution process within 1 business day, aiming for a swift and satisfactory resolution within 5 business days.
        • Rectification Work Timeframes: Should any rectification work be necessary, it will be acknowledged within 1 business day and completed within 2 business days, ensuring minimal inconvenience to you.

        Additional Services at Transparent Rates

        • Beyond Basic Installation: Our verified installers offer a range of additional services to complement your installation. All available services and their set rates are communicated upfront, ensuring no surprises.

        By choosing "Installed Today," you're not just installing a product; you're investing in a seamless, quality service that values your time and peace of mind. Trust in our verified installers to exceed your expectations with their professionalism, expertise, and commitment to excellence.

        This product description outlines the benefits and assurances provided by "Installed Today" verified installers, designed to inform and reassure customers about the high level of service they can expect.

        📦 Fast & Reliable Delivery – What to Expect

        🚛 Standard Delivery: 2-8 Business Days

        Express Delivery: 1-4 Business Days

        🔹 Super Fast Turnaround!90% of hot water orders in metro areas arrive within 1 business day! 🚀

        🔹 Weather Delays – Hot water systems can’t be shipped via courier in the rain, so delivery may be delayed during severe weather.

        🔹 Express Delivery Guarantee – If your express order takes longer than 1-4 business days, we’ll automatically adjust the timeframe to 2-8 days and refund your express shipping charge – no need to chase it up!

        🔹 Track Your Order – We’ll send you a delivery details as soon as your order is dispatched.

        Need help with your delivery? Get in touch – we’re happy to help! 😊

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