Exhaustive Critical Review and Long-Term Case Study: Vulcan 135L 4 Star Gas Hot Water Efficiency

Is the Vulcan 135L 4 Star Gas Hot Water system a worthwhile investment for the long haul? Our Critical Review and Long Term Case Study Vulcan 135L 4 Star Gas Hot Water analysis dives into its performance, durability, and efficiency. Discover user experiences and real-world insights that will help you make an informed decision on this popular hot water solution.

Key Takeaways

  • The Vulcan 135L 4 Star Gas Hot Water system is known for efficiency and reliability, with varying long-term performance requiring occasional maintenance and serving households of different sizes.

  • Vulcan’s 135L system incorporates energy-efficient features, such as a specialized thermostat, and is designed for durability with steel jackets, protective lining, and a sacrificial anode to combat corrosion.

  • Installation of the Vulcan 135L system should be performed by professionals for safety and optimal operation, and the system’s maintenance should include regular checks, part replacements, and combating hard water buildup for extended longevity.

In-Depth Analysis: Vulcan 135L 4 Star Gas Hot Water System


The Vulcan 135L 4 Star Gas Hot Water system offers the following benefits:

  • Provides a constant stream of hot water at your command

  • Complex interplay of intricate components and engineering marvels

  • Delivers hot water efficiently and effectively

  • Reliable and durable system

  • Suitable for households of all sizes

To truly appreciate the value this system brings to your household, we need to delve deeper and examine it thoroughly.

Throughout this analysis, we will assess the system’s performance over time, delve into its energy efficiency, and gauge customer satisfaction. Through this journey, we aim to paint a comprehensive picture of the Vulcan 135L system’s viability over the long term. For those contemplating the installation of a new hot water system or the replacement of an existing one, we welcome you to our comprehensive dissection and analysis of the Vulcan 135L system.

Performance Over Time

When it comes to hot water systems, one of the most important considerations is how the unit performs over time. After all, a system that starts strong but fades rapidly can leave you in a cold shower when you least expect it. With the Vulcan 135L system, there have been reports of issues such as the need for relighting or troubleshooting the pilot light within 2.5 years of operation.

Additionally, some users have noticed persistent condensation on the burner, which could be an indicator of reduced heating capability. On the flip side, Vulcan 135L systems have demonstrated notable lifespan with units lasting up to 28 years, although there have been cases where replacement was necessary after 6 to 7 years. This range of experiences indicates that despite the general reliability of the Vulcan 135L system, regular maintenance and servicing might be required for optimal long-term operation.

Energy Efficiency Insights

Energy efficiency is another key factor to consider when examining the Vulcan 135L 4 Star Gas Hot Water system. With its 4-star energy efficiency rating, the system is recognized for its eco-friendly performance, potentially translating into long-term savings on energy bills by leading to lower gas consumption.

One of the notable features contributing to this energy conservation is a specialized thermostat that helps in maintaining the water at an optimal temperature. Designed to align with the usage patterns of Australian households, the Vulcan 135L system promotes efficient energy use without excess. This efficient use of energy not only contributes to reduced running costs but also aligns with the growing trend towards adopting more sustainable and environmentally friendly household practices.

Customer Satisfaction and Service

In our detailed analysis, it’s important to also focus on customer satisfaction and service experiences associated with the Vulcan 135L system. After all, a hot water system isn’t just about heating efficiency and energy ratings; it’s also about how it serves the people who use it regularly.

Customers have expressed high satisfaction with the Vulcan 135L system, recommending it to others due to its reliable performance and great value. The user-friendly controls facilitate easy temperature adjustments, enhancing the customer’s positive experience. The system’s affordability, priced between $1600 and $2000, is highly valued by households, indicating its excellent cost-effectiveness. Furthermore, backed by Vulcan’s warranty coverage and the manufacturer Rheem’s reputation for quality, the system has enjoyed a positive reception among customers, further underlining its status as a reliable hot water system.

Durability and Construction Quality: Vulcan's Built to Last Promise

Durability and Construction Quality of Vulcan 135L System

Having examined the performance and energy efficiency of the Vulcan 135L system, we will now concentrate on the system’s durability and construction quality. After all, the longevity and reliability of any appliance are directly tied to the quality of its construction.

Designed to resist variable water and heating cycle pressures, Vulcan’s water heater storage cylinders offer increased durability. The durable construction and weather resistance are standout features of the Vulcan Freeloader series that contribute to the system’s robustness. The Vulcan system’s balanced flue design enhances longevity. It also makes maintenance and servicing easier. These features showcase Vulcan’s commitment to providing a product that’s truly built to last.

Steel Jackets and Protective Lining

Delving into the specifics of the Vulcan 135L system’s construction, one of the key aspects that stand out is the use of steel jackets and protective lining. These elements play a pivotal role in enhancing the durability and longevity of the system.

Vulcan hot water systems, including the 135L model, use a storage hot water system with a cylinder made of high strength steel to endure the pressure variations from water and heating cycles. Adding to this robustness, a ceramic lining bonded to the inside of the steel cylinder acts as a defense mechanism against corrosion, further enhancing the longevity of the system.

This synthesis of steel jackets and protective lining ensures that the Vulcan 135L system not only delivers hot water efficiently but is also constructed for longevity.

Sacrificial Anode and Corrosion Resistance

The inclusion of a sacrificial anode also plays a significant role in enhancing the durability of the Vulcan 135L system. This small but vital component plays a significant role in protecting the metal tank from corrosion, thereby enhancing the overall lifespan of the system. The sacrificial anode attracts corrosive minerals to its magnesium, aluminium, or zinc construction, thus preventing these corrosive materials from attacking the metal tank. While anode rods typically last 3-5 years, factors like mineral-rich water or the use of water softeners can accelerate anode corrosion, thereby necessitating more frequent replacement.

By replacing the sacrificial anode every four to five years, depending on water quality and system usage, one can ensure efficient operation and avoid system failure.

Case Studies of Longevity

To truly understand the durability of the Vulcan 135L system, it’s beneficial to look at case studies that showcase the longevity of Vulcan hot water systems. These case studies provide tangible examples of the system’s potential for extended durability.

According to manufacturer reports and customer reviews, the Vulcan 135L Gas Hot Water Heater typically lasts a minimum of 7 years. However, there have been instances where Vulcan hot water systems have provided reliable service well beyond their expected service lifetimes. For instance, the Vulcan Hotshot 640135NO hot water gas heater has been reported to be in perfect working order for more than 14 years. These case studies highlight Vulcan’s commitment to durability and robustness, reinforcing its promise of a hot water system that’s built to last.

Installation and Setup: Getting Your Vulcan 135L Running

Installation and Setup of Vulcan 135L System

Having examined the performance, energy efficiency, and durability of the Vulcan 135L system, our focus now shifts to its installation and setup process. After all, the best hot water system in the world won’t serve you well if it’s not installed properly.

Vulcan provides comprehensive installation guidance and highly recommends professional installation to ensure safety and optimal operation. You can choose to include optional items like a tempering valve, pressure limiting valve, and non-return isolation valve with the Vulcan 135L system during installation. These items are available for added customization and functionality..

The purchase of a Vulcan system through Australian Hot Water even includes the cost of removing and disposing of the old hot water heater, enhancing the overall value proposition.

Installation External Model Number

The installation process of the Vulcan 135L system involves several key considerations, one of which is the installation external model number. This number is critical as it contains specific details on features and requirements to ensure compatibility with the site’s existing pipework.

By referring to the model number, installers can determine the system’s dimensions, necessary clearances, and ventilation requirements, contributing to the selection of an appropriate installation location. This attention to detail ensures the Vulcan 135L system is installed correctly, optimizing its performance and lifespan.

Professional Compliance and Safety

Professional compliance and safety are paramount during the installation process. The Vulcan 135L Gas Hot Water system, equipped with a gas burner, should be installed by a certified professional to ensure safe operation and peak efficiency.

A non-combustible and level surface must be provided for the system’s installation, along with appropriate clearances from combustible materials and proper ventilation to comply with safety standards. The professional installation guidelines for the vulcan gas models, including Vulcan Gas Outdoor 648 series 135-170 models and Vulcan Freeloader Owner’s Guide, are set forth by Vulcan in the installation instructions. These guidelines provide detailed instructions for a successful installation process, ensuring the safe usage of natural gas. With the vulcan gas models easy to follow guidelines, you can have peace of mind knowing your system is installed correctly.

Furthermore, Vulcan backs the repair and maintenance work conducted by their professional installers with a workmanship guarantee, providing peace of mind to the consumer.

Post-Installation Checklist

Once the Vulcan 135L system is installed, it’s crucial to perform a post-installation check to detect any potential leaks and confirm that the system is functioning properly. Understanding the location and operation of the gas shut-off valve is critical for safety during an emergency.

After installation, it’s also important to check the temperature settings to ensure water is not excessively hot, reducing the risk of injuries from scalding. Regular inspection of the temperature and pressure relief (TPR) valve is necessary to identify any continuous leakages, which could necessitate the replacement or adjustment of the valve.

By adhering to this post-installation checklist, you can ensure the smooth operation of your Vulcan 135L system.

Maintenance and Upkeep: Preserving Your Vulcan System

Once your Vulcan 135L system is up and running, the focus shifts to maintenance and upkeep. Regular checks and part replacements are crucial for maintaining the high efficiency and longevity of your Vulcan system.

For maintaining high efficiency over time, customers can conveniently schedule regular services for their Vulcan 135L system online. The temperature and pressure relief valve, along with other safety features such as temperature relief valves, are vital for the Vulcan 135L system, ensuring consumer protection and long-term satisfaction. Furthermore, Vulcan’s expansive service network ensures efficient and expedited repairs or replacements for parts covered under the heater’s warranty.

Regular Checks and Balancing Flue Cleaning

Maintaining a Vulcan 135L existing hot water system requires scheduling professional inspections on an annual or bi-annual basis. This can help identify any potential issues early on, preventing more significant problems down the line.

Temperature and pressure relief (TPR) valves in Vulcan systems should be checked biannually by the owner and should be operated every six months to ensure they function correctly. Cleaning the balanced flue is also important as part of regular maintenance to ensure the safe and efficient management of exhaust gases.

By adhering to these maintenance practices, you can ensure the longevity and efficient operation of your Vulcan 135L system.

Replacing Parts: When and Why

Certain components of your Vulcan 135L system may require replacement over time. For instance, Vulcan recommends replacing the sacrificial anode of their hot water systems every five years to prevent premature tank failure. Indicators of sacrificial anode depletion include unusual noises, clogged taps, or water that is rusty and has an odor, suggesting tank corrosion that requires anode inspection or replacement.

Furthermore, the normal operation of the TPR valve includes releasing a small amount of water during the heating cycle. However, excessive discharge is abnormal and requires attention. Immediate replacement of the TPR valve is crucial if it is stuck, fails to release water, or remains open after testing.

Regular replacement of parts can help maintain the system’s optimal performance and prolong its lifespan.

Combating Hard Water and Mineral Build-Up

One of the challenges that any hot water system faces is hard water and mineral build-up. These can impede system efficiency and heating performance. Signs of mineral build-up in gas water heaters include inconsistent water temperatures, unusual noises like rumbling or popping, and rusty or discolored water output.

For areas with hard water, your Vulcan 135L system will need regular system flushes and clearance of obstructions to maintain optimal performance and efficiency. Regular cleaning of air filters and coils is also crucial to minimize efficiency loss due to mineral build-up. By combatting the impact of hard water, you can ensure the longevity and efficient operation of your Vulcan 135L system.

Cost-Benefit Analysis: Vulcan 135L 4 Star System Value Proposition

Cost-Benefit Analysis of Vulcan 135L 4 Star System

Having covered the performance, energy efficiency, durability, installation, and maintenance of the Vulcan 135L system, we now turn to its cost implications. A cost-benefit analysis will help us understand the value proposition of the Vulcan 135L 4 Star system, taking into account the initial investment, long-term savings, and warranty coverage.

The average price for the Vulcan 135L Hot Water Tank varies from $1200 to $2,000. The Vulcan 135L Gas Hot Water Heater is marketed with a key selling point of delivering high quality and proven technology at a very affordable price. Additional installation costs may include expenses for:

  • pipe upgrades

  • concrete slabs

  • leveling materials

  • system lifting

  • carpentry

  • building alterations

These potential costs should be taken into consideration when planning for the installation of the system.

Initial Investment vs. Long-Term Savings

In evaluating the Vulcan 135L system’s value proposition, it’s vital to balance the initial investment against potential long-term savings. While the system’s price tag may seem steep at first glance, its energy efficiency and robust construction make it a worthwhile investment, especially for family use.

The estimated annual running cost for a Vulcan 135L hot water system utilized by a family of four is approximately $950. Maintenance costs, such as replacing relief valves in the Vulcan system, are typically between $300 to $400. When you factor in these costs and consider the system’s energy efficiency and lifespan, it becomes clear that the Vulcan 135L system offers significant value over the long term.

Warranty Period and Coverage

One of the key factors to consider when evaluating the Vulcan 135L system’s value proposition is its warranty coverage. The Vulcan 135L Gas Hot Water Heater comes with a substantial warranty that includes different types of coverage to protect the consumer’s investment and provide assurance of the product’s durability.

Consumers receive a 7-year warranty specifically for the hot water system’s cylinder, serving as a testament to the product’s longevity and Vulcan’s commitment to reliability. In addition to the cylinder warranty, customers are offered a 3-year labour warranty on the cylinder, further reducing potential long-term maintenance costs.

The warranty also covers all other components of the Vulcan 135L for a period of 1 year for domestic installations, mitigating early expenses that could arise from repairs or parts replacement.

Affordability and Energy Rebates

The 4-star energy efficiency rating of the Vulcan 135L system might qualify it for energy rebates, thereby increasing its affordability. Integration with renewable energy sources like solar not only reduces the Vulcan 135L’s carbon footprint but also potentially qualifies it for additional incentives.

To accommodate different financial situations, the Vulcan 135L Gas Hot Water Heater offers financing through the Brighte Personal Loan, improving its accessibility. When you factor in the potential energy rebates and financing options, it’s clear that the Vulcan 135L system offers an affordable solution for households seeking a reliable, energy-efficient hot water system.

Same Day Hot Water Service: Vulcan's Commitment to Convenience

As we near the conclusion of our extensive review, it’s important to highlight Vulcan’s dedication to convenience, embodied in their same-day hot water service, emergency response, and routine service scheduling. These services underline Vulcan’s dedication to ensuring minimal disruption to your hot water supply and a seamless customer experience.

Installed Today provides 24/7 availability for emergency hot water heater replacement services, showcasing their commitment to rapid response in urgent situations. In the event of a hot water emergency, Vulcan ensures a swift response time backed by a qualified national technician network.

Customers can conveniently schedule a service for their Vulcan 135L hot water system for the same day if contacted prior to 8am or arrange it online at their convenience, through the ‘Installed Today’ program.

Emergency Response and Replacement

Vulcan’s emergency repair services for hot water systems include:

  • Contacting their support center for rapid resolutions to urgent problems

  • An emergency response team consisting of verified and certified plumbers

  • The ability to handle both electric and gas system repairs

This quick and efficient response allows for minimal disruption to your hot water supply, ensuring that you can get back to your routine as soon as possible. With Vulcan, you can rest assured knowing that in the face of an emergency, you have a team ready to respond swiftly and effectively.

Scheduling Regular Services

Regular servicing is essential to maintain the efficiency and lifespan of your Vulcan 135L system. Vulcan hot water system owners can schedule regular maintenance checks by contacting the company’s service team directly or arranging for maintenance with licensed plumbers who specialize in servicing Vulcan products.

Regular servicing is crucial to identify and address potential issues early, aiding in the prevention of sudden system failures. Vulcan recommends annual servicing for continuous flow hot water systems, while storage systems typically require a service every five years.

By adhering to a regular servicing schedule, you can ensure the longevity and efficient operation of your Vulcan 135L system.


As we reach the end of our comprehensive review, it’s clear that the Vulcan 135L 4 Star Gas Hot Water system is a remarkable blend of performance, energy efficiency, durability, and convenience. From its 4-star energy rating to its robust construction, the Vulcan 135L system ensures reliable hot water supply while keeping energy consumption in check.

Whether you’re considering installing a new hot water system or replacing an existing one, the Vulcan 135L system makes for a compelling choice. Its affordable price, coupled with potential energy rebates and financing options, makes it an accessible solution for households of all sizes. Additionally, with comprehensive warranty coverage and a commitment to same-day hot water service, Vulcan ensures a seamless customer experience. As you weigh your options, consider the Vulcan 135L system - a hot water solution that truly delivers on its promise of performance, efficiency, and reliability.

Frequently Asked Questions

Are Vulcan hot water systems good?

Yes, Vulcan hot water systems are considered good due to their high quality, affordability, durability, and availability of replacement parts locally.

Is Rheem better than Vulcan?

It depends on your priorities and budget. Vulcan has a solid warranty and is affordable, while Rheem offers better energy efficiency and a longer warranty at a higher price. Consider your needs and budget before making a decision.

Who makes Vulcan hot water systems?

Vulcan hot water systems are made by Rheem, which is a top brand in hot water storage heaters.

How long does the Vulcan 135L system typically last?

The Vulcan 135L Gas Hot Water Heater typically lasts at least 7 years, but many have provided reliable service beyond this timeframe. It's important to note that individual experiences may vary.

What are some potential issues with the Vulcan 135L system?

Potential issues with the Vulcan 135L system include the need for relighting or troubleshooting the pilot light within 2.5 years of operation, and persistent condensation on the burner, which may indicate reduced heating capability. It's important to monitor these potential issues for optimal system performance.

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