Gas Hot Water System: Instant Systems Supplied & Installed from $899
The Ultimate Guide to Choosing the Best Instant Gas Hot Water System
Thinking about upgrading to a continuous hot water system? Also known as instantaneous hot water systems, these tankless units heat water on demand, reducing energy costs and eliminating bulky storage tanks. Continuous hot water systems can last up to 20 years and operate without storage tanks, using a gas burner to heat water instantly as it flows through a heat exchanger when the tap is turned on. With a lifespan of up to 20 years, instant gas hot water systems are an efficient and space-saving solution for any home.
This guide covers: ✅ How instant hot water systems work ✅ Types & benefits of tankless systems ✅ Installation insights & costs ✅ Energy savings & efficiency ✅ Key factors to consider when choosing a system
What is an Instant Gas Hot Water System?
Imagine turning on the tap and getting instant, continuous hot water—that’s the power of an instantaneous hot water system. Unlike traditional storage water heaters that keep a large tank of water heated at all times, instant systems heat water only when needed, saving energy.
There are two main types of tankless hot water systems:
Gas systems are often more energy-efficient than electric storage heaters, with models like the Rinnai B26 outperforming many electric hot water heaters in cost and efficiency.
Electric hot water systems, while affordable and easy to install, are often compared to gas options for their potential off-peak energy use and suitability for various household needs.
How Does an Instantaneous Hot Water System Work?
When a hot water tap is turned on, the system kicks into action:
1️⃣ Cold water enters the unit through a pipe.
2️⃣ A gas burner (or electric element) heats the water as it flows through a heat exchanger.
3️⃣ A flow sensor and modulating valve ensure the water is heated to the right temperature.
4️⃣ Once the tap is turned off, the system shuts down, saving energy.
This on-demand process eliminates standby heat loss and makes these systems more energy-efficient than traditional storage tanks.
Key Benefits of Going Tankless
🔥 Energy Efficiency – Uses 24%-34% less energy than storage water heaters.
🌍 Lower Emissions – Gas models produce up to 75% fewer emissions than electric storage water heaters.
🏠 Space-Saving Design – No bulky storage tank, perfect for compact homes.
🚿 Endless Hot Water – Never run out, as long as the capacity meets your needs.
💰 Long-Term Savings – Lower running costs can offset the higher upfront price.
If you’re looking for long-term efficiency and a reliable hot water supply, an instant gas hot water system is a smart investment.
Is an Instant Gas Hot Water System Right for You?
Before switching to a tankless water heater, consider these factors:
✔️ Household Size – More people = higher hot water demand.
✔️ Number of Hot Water Outlets – Running multiple taps simultaneously may require a higher flow rate or multiple units.
✔️ Distance to Fixtures – Longer pipe runs can reduce flow rate.
✔️ Gas Supply & Ventilation – Ensure your home can accommodate a gas system.
If your home has high water usage, you might need a larger unit or multiple systems to ensure a steady flow.
Cost Breakdown: Installation & Running Costs
💰 Installation Costs
💡 Ongoing Energy Savings
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Instant systems use less energy, reducing running costs.
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Households switching from electric storage to gas instant can save up to $750 per year.
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Eliminates standby heat loss from storage tanks.
While the initial cost is higher, the long-term savings make it a cost-effective upgrade.
Energy Efficiency: Maximizing Savings
Maximizing energy efficiency is crucial when it comes to hot water systems. By choosing an energy-efficient system, you can significantly reduce your energy bills and minimize your environmental impact. Here are some tips to help you maximize savings:
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High Energy Ratings: Look for systems with high energy ratings, such as the 6.1-star energy rating of the Rinnai B26.
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Solar Hot Water Systems: Consider installing a solar hot water system, which can provide up to 80% of your hot water needs.
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Heat Pump Water Heaters: Use a heat pump water heater, which can be up to 3 times more efficient than traditional electric water heaters.
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Continuous Flow Systems: Install a continuous flow system, which only heats water when needed, reducing energy waste.
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Regular Maintenance: Regularly maintain your system to ensure optimal performance and efficiency.
By following these tips, you can maximize your energy savings and enjoy a more efficient hot water system.
How to Choose the Best Instant Gas Hot Water System
When selecting a system, consider:
📏 Size & Flow Rate
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Small homes (1-3 people, 1 outlet) → 16 L/min unit
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Larger households (more outlets) → Higher flow rate needed
🏆 Brand & Model
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Rheem & Rinnai are leading choices for durability and efficiency. Choosing the right Rheem hot water system for both residential and commercial needs ensures optimal efficiency and performance.
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Energy Star ratings help identify the most energy-efficient models.
Rheem hot water systems offer an extensive range of products, including electric, gas, solar, and continuous flow systems. Their long-standing reputation in Australia and commitment to quality and energy efficiency make them a trusted and innovative choice for consumers.
Gas Hot Water System Brands: Trusted Names in the Industry
When it comes to gas hot water systems, several trusted brands stand out in the industry. Here are a few:
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Rinnai: Known for their high-quality and energy-efficient systems, Rinnai is a popular choice among homeowners.
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Rheem: With over 80 years of experience, Rheem is a trusted name in the industry, offering a wide range of hot water solutions.
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Bosch: Bosch is a well-known brand that offers a variety of gas hot water systems, including continuous flow and storage tank models.
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Dux: Dux is a popular choice among homeowners, offering a range of gas hot water systems that are known for their reliability and efficiency.
These brands offer a range of gas hot water systems that cater to different needs and budgets. It’s essential to research and compare different models before making a purchase.
Installation Insights: What to Expect
Preparation:
✅ Ensure proper ventilation for gas systems.
✅ Allow clearance for airflow & maintenance.
✅ Install near gas & water connections to minimize modifications.
Installation Steps:
🔧 Connect system to gas line & water pipes.
🔧 Install pressure relief valve & water shut-off valve.
🔧 Test for leaks & temperature accuracy.
Pro Tip: A licensed plumber must install the system to ensure compliance and efficiency.
Maintaining Your Instant Hot Water System
⏳ Regular Check-Ups
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Annual inspections to check efficiency.
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Flush system to remove mineral buildup.
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Replace sacrificial anode every 5 years to prevent rust.
⚠️ Troubleshooting Common Issues
🚰 Fluctuating Temperatures? – Check flow rate & gas pressure.
🥶 Cold Water "Sandwich" Effect? – Minimize consecutive uses of hot water.
🔧 Low Pressure or Lukewarm Water? – May need strainer valve cleaning or thermostat replacement.
Troubleshooting and FAQs: Quick Fixes and Common Questions
Here are some common questions and quick fixes for hot water system issues:
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Q: Why is my hot water system not producing hot water?- A: Check if the system is turned on, and if the temperature setting is correct. Also, ensure that the system is properly installed and maintained.
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Q: Why is my hot water system leaking?- A: Check for loose connections or damaged pipes. Turn off the system and call a professional for assistance.
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Q: How often should I maintain my hot water system?- A: Regular maintenance is essential to ensure optimal performance and efficiency. Check your system’s manual for recommended maintenance schedules.
Some common issues with hot water systems include:
Regular maintenance and inspections can help identify potential issues before they become major problems.
Upgrading to an Instant Gas Hot Water System
Switching from a storage tank to an instant system requires:
✔️ Gas line upgrades (if necessary).
✔️ Venting adjustments for gas models.
✔️ Plumbing modifications for water supply compatibility.
Despite the higher initial cost, the energy savings and durability make it a smart long-term investment.
Solar Compatibility: Future-Proofing Your System
Solar compatibility is an essential feature to consider when purchasing a hot water system. Here are some benefits of solar-compatible systems:
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Reduced Energy Bills: Solar hot water systems can provide up to 80% of your hot water needs, reducing your reliance on traditional energy sources.
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Environmental Benefits: Solar hot water systems are a sustainable option that reduces your carbon footprint.
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Increased Property Value: Installing a solar hot water system can increase your property value and appeal to potential buyers.
When choosing a solar-compatible system, consider the following:
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High Solar Efficiency Ratings: Look for systems with high solar efficiency ratings.
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Compatibility with Existing Plumbing: Ensure the system is compatible with your existing plumbing infrastructure.
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Cost of Installation: Consider the cost of installation and any additional components required.
By future-proofing your system with solar compatibility, you can enjoy a more efficient and sustainable hot water solution.
Flexible Payment & Financing Options
To make upgrading easier, interest-free finance & payment plans are available.
💳 Buy Now, Pay Later options like Humm & Zip help spread the cost.
📆 Flexible payment plans allow weekly or fortnightly installments.
💡 Tip: Check the offer end date of interest-free finance plans to avoid unexpected charges.
Warranty and Support: Peace of Mind with Your Purchase
When purchasing a hot water system, it’s essential to consider the warranty and support offered by the manufacturer. Here are some things to look for:
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Comprehensive Warranties: Look for systems with comprehensive warranties that cover parts and labor.
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Dedicated Customer Support: Check if the manufacturer offers dedicated customer support and service.
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Reputable Brands: Ensure the system is backed by a reputable brand with a history of reliability and efficiency.
Some popular brands that offer excellent warranty and support include:
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Rinnai: Offers a 10-year warranty on their systems.
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Rheem: Provides a 5-year warranty on their systems.
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Bosch: Offers a 5-year warranty on their systems.
By choosing a system with a comprehensive warranty and dedicated support, you can enjoy peace of mind with your purchase and ensure a hassle-free experience.
The Bottom Line: Is an Instant Gas Hot Water System Worth It?
✔️ Lower running costs than traditional storage tanks.
✔️ Efficient, space-saving, and environmentally friendly.
✔️ Provides endless hot water for households of all sizes.
If you’re looking for a reliable, cost-effective, and energy-efficient hot water solution, an instant gas hot water system is a solid investment.
