🏷️ Brand:
🔢 Model Number:
📦 Volume: L
📏 Width: mm
📐 Height: mm
🌍 Manufactured In:
🛠️ Heat Exchange Material:
🛡️ Cylinder/Heat-Exchange Warranty: Years
🔇 Noise Level: dBa
⚖️ Dry Weight: kg
📡 WiFi Controller:
⏲️ Built-In Timer:
💡 LED/LCD Status Indicator:
📊 Coefficient of Performance (COP):
⚡ Energy Source:
IMPORTANT - Default supply is Natural Gas — please leave a note at checkout if LPG is required where available.

Onsen 26 Continuous Flow Gas Hot Water System Installation – Brisbane & Gold Coast

Upgrade to reliable, energy-efficient hot water with the Onsen 26 Continuous Flow Gas Hot Water System, installed by JR Gas & Water.
Servicing Brisbane, Gold Coast, Logan, Ipswich, Moreton Bay and the Scenic Rim, our licensed gas fitters provide full supply and installation backed by a lifetime workmanship warranty.
Compact, efficient and available in both Natural Gas and LPG models, the Onsen 26 delivers continuous hot water on demand for busy Australian households.

Product Overview

The Onsen 26 offers high-efficiency hot-water delivery with a 6-star energy rating and advanced safety features.
Available in Natural Gas (ONHW26NG) or LPG (ONHW26LP) models, it delivers 26 L/min at a 25 °C rise—ideal for households of up to 5 people.
Its oxygen-free copper heat exchanger ensures long service life, while anti-frost protection allows reliable outdoor operation in cold weather.
Optional temperature controllers provide precision control and comfort, making the Onsen 26 a perfect combination of performance and value.

Key Features & Why They Matter

1️⃣ Continuous Flow Hot Water – Endless hot water for multiple outlets simultaneously.
2️⃣ Energy Efficient (6-Star Rated) – Lower running costs and reduced emissions.
3️⃣ Available for NG & LPG – Choose the gas type that suits your property.
4️⃣ Oxygen-Free Copper Heat Exchanger – Corrosion-resistant and built for durability.
5️⃣ Anti-Frost Protection – Safe, reliable operation year-round.
6️⃣ Compact Design (570 × 394 × 166 mm) – Easy wall-mount installation.
7️⃣ Adjustable Temperature Models – 50 °C preset or 60 °C adjustable versions.
8️⃣ High Flow Rate (26 L/min) – Ideal for medium to large families.
9️⃣ Custom Accessories Available – Recess boxes, flue diverters & anti-theft brackets.
🔟 10-Year Warranty on Heat Exchanger – Plus 3 years parts & labour.

Why Choose JR Gas & Water

✅ QBCC-licensed gas fitters & plumbers
✅ Same-day installation for in-stock units
✅ Old system removal included
✅ Gas compliance certificate issued post-install
✅ Transparent fixed pricing
🏆 ProductReview Award Winners 2023–2025

Our Installation Process

1️⃣ Book or request a quote
2️⃣ Old unit safely removed
3️⃣ New Onsen 26 system installed and tested
4️⃣ Gas compliance paperwork lodged
5️⃣ Site cleaned and operation explained

Technical Specifications

• Flow Rate: 26 L/min (at 25 °C rise)

• Gas Type: Natural Gas / LPG

• Model Numbers: ONHW26NG50 / ONHW26LP50 (50 °C preset), ONHW26NG60 / ONHW26LP60 (60 °C adjustable)

• Gas Consumption: 198 MJ/h

• Energy Rating: 6 stars

• Operating Pressure: 200–1000 kPa

• Connection Sizes: 20 mm (Gas/Hot/Cold)

• Dimensions (H × W × D): 570 × 394 × 166 mm

• Weight: 19 kg

• Warranty: 10 years on heat exchanger, 3 years parts & labour, 1 year on controllers

Who Is This System Best For?

✅ Families of 3 – 5 people
✅ Homes using Natural Gas or LPG supply
✅ Compact spaces needing wall-mount installation
✅ Properties wanting energy-efficient, continuous hot water

5 Common Questions About the Onsen 26

1. Is the Onsen 26 suitable for large households?
Yes — it delivers 26 L/min, enough for two bathrooms running simultaneously.

2. Can it be installed with LPG?
Absolutely — available in both Natural Gas and LPG versions.

3. Does it include frost protection?
Yes — built-in anti-frost protection for safe outdoor use.

4. Can I control the temperature?
Yes — models are available with preset or adjustable temperature options.

5. What warranty does it include?
10 years on the heat exchanger, 3 years parts & labour, and 1 year on controllers.

Order Your Onsen 26 Continuous Flow Hot Water System Today

Upgrade to the Onsen 26 Continuous Flow Gas Hot Water System for dependable, efficient and endless hot water.
Order online for fast delivery Australia-wide or contact JR Gas & Water for expert installation in Brisbane and the Gold Coast.

🔥 Instant Gas Hot Water System Package Selection Guide

(Please rotate your mobile device for easier viewing)

Choosing the right instant gas hot water system package depends on your current setup, whether plumbing or gas upgrades are needed, and if any relocation or compliance work is required. Use this guide to compare package levels and find the best match for your home.

We know things don’t always go to plan — and most customers aren’t plumbers — so we’re flexible and happy to adjust your installation package if needed.

💡 Which Package Is Right for You?

IMPORTANT: All online packages are for EXTERNAL installations only. For internal installations, please request a quote.

✅ Base – For compliant replacements of existing identical EXTERNAL instant systems
Best for like-for-like swaps where the existing system is fully compliant and the same make/model/series. No gas line changes, electrical work, or plumbing alterations.

🧰 Example: Replacing a Rinnai B26 with a Rinnai B26 on the same wall with compliant gas supply.

✅ Silver – For minor upgrades
Includes small plumbing adjustments and a new valve kit. No gas line modifications or system disposal. Designed for customers on a budget upgrading to a slightly different model.

🧰 Example: Replacing a Rheem 26 with a Rinnai B26 where the gas line is compliant but pipework needs modifying to suit and valves need replacing for warranty.

🏆 Gold – Best Seller – For standard installations
Covers everything needed for a standard upgrade: removal of old unit, plumbing changes, valves, and a tempering valve.

🧰 Example: Upgrading from an old Bosch 16P Instant to a new Bosch 16H that requires a tempering valve, with full plumbing refresh and removal of old unit.

💰 Sapphire – Best Value – For installations requiring gas upgrades
Everything in the Gold package plus gas line upgrades or a new gas main from meter to unit to ensure safe and compliant installation.

🧰 Example: Switching from a smaller capacity like a 13L to a larger 26L instant system that needs a larger gas main and full plumbing setup.

✅ Diamond – For major gas plumbing overhauls
Adds extended gas runs, upgraded regulators or meter connections and a new power point. Ideal for homes switching to gas or where old systems were severely non-compliant.

🧰 Example: Changing from electric to gas in a home with no current gas line in the right location, requiring a full line upgrade.

✅ Platinum – The ultimate package
Includes everything: relocation, extensive plumbing, and full gas installation or rerouting. Ideal for complex installs or new system placements.

🧰 Example: Moving the hot water system to the opposite side of the home and running a new gas line with full setup and all compliance.

🏆 Package Comparison Guide

🔧 Trusted Materials, Backed by Quality

We only use high-grade parts from reputable manufacturers:

• Valves – AVG, RMC, Rye Metal

• Copper Pipe – Kembla Type B, Crane

• PEX Plumbing – Ezipex

• Insulation – eFlex, K-Flex

• Brassware – Brasshards

• Gas Components – Bromic, EziPress, Viega

• Sealants – Loxeal

Let us know if you have any specific brands or components you’d like us to use.

🛠 Need Help Choosing?

Still unsure which package is right for your home?
The JR Gas & Water team is here to help.

👉 Click here to contact us

ZipPay – 6-Month Interest-Free on All Products

ZipPay allows you to buy now and pay later, offering flexible, interest-free payments for up to 6 months on all JR products. It’s easy to set up, and you can customize your repayment schedule to suit your budget. Payments can be made weekly, fortnightly, or monthly, with a $6 fee if the balance isn’t paid off by the due date​.

Humm – Up to 12 Months Interest-Free

Humm provides interest-free payment plans on purchases up to $30,000, perfect for both small and large buys. For items over $2,000, you can spread payments over 12 months. Humm also offers flexibility in scheduling payments based on when you get paid​

Afterpay – 8 Weeks, No Interest

With Afterpay, spread the cost of purchases across four equal installments, due every two weeks, over an 8-week period. There’s no interest, and as long as payments are made on time, there are no fees. Perfect for purchases between $100 and $1,500​

Plenti Finance – For Reclaim Systems Only

Plenti Finance is available exclusively for Reclaim Energy systems. This option offers tailored repayment terms with competitive interest rates, helping make eco-friendly choices more affordable. For more detailed information on Plenti’s terms and eligibility for Reclaim systems, visit the Reclaim Energy finance page​

If you're in Queensland and considering a new electric hot water system, JR Gas & Water is the company to choose. Here's why:

Experience and Expertise: JR Gas & Water has over 10 years of experience in the gas and plumbing industry. Their team of licensed and insured professionals is highly skilled and knowledgeable about all aspects of electric hot water system installation, maintenance, and repair. They can provide expert advice on the best system for your needs and ensure a smooth installation process.

Quality Products: JR Gas & Water uses only high-quality products from trusted brands to ensure your electric hot water system is reliable and efficient. They also offer a range of options to suit different budgets and requirements.

Competitive Pricing: JR Gas & Water offers competitive pricing for their electric hot water systems, ensuring that you get a great value for your investment. They also provide a detailed quote upfront, so there are no surprises or hidden costs.

Customer Service: JR Gas & Water is committed to providing excellent customer service. They are always available to answer any questions or concerns you may have and are committed to ensuring your satisfaction.

Local Business: JR Gas & Water is a locally owned and operated business in Queensland. By choosing them for your electric hot water installation, you are supporting a local business and contributing to the local economy.

Warranty and Guarantee: JR Gas & Water provides a warranty and guarantee on all their products and services, giving you peace of mind knowing that your system is covered in case of any issues.

Energy Efficiency: Electric hot water systems can be energy efficient, and JR Gas & Water can help you choose the right system for your needs. They can provide advice on energy-saving features and options, such as timers and thermostats, to help you save on your energy bills.

Safety: JR Gas & Water is committed to safety and ensuring that all installations are done to the highest safety standards. They are also familiar with local safety regulations and requirements, ensuring that your electric hot water system is installed safely and in compliance with all relevant codes.

JR Gas & Water is a reliable and experienced choice for your electric hot water system installation in Queensland. With a commitment to quality products, competitive pricing, excellent customer service, and safety, they can help you make the switch to a more efficient and cost-effective solution for your hot water needs. Contact them today to learn more about their services and how they can help you.