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Introduction to Tankless Water Heaters

Tankless water heaters provide immediate hot water without relying on a storage tank, functioning on an as-needed basis.

In contrast to traditional tank water heaters, tankless systems employ high-powered elements to quickly heat water during its flow through the device.

Understanding the advantages and limitations of tankless water heaters will help determine if they are the best option for your home. Considerations such as initial costs, energy savings, flow rate, and installation requisites are crucial when evaluating tankless heaters.

Bossley Park Plumbing provides critical information to help you discern whether a switch from a conventional water heater to a tankless system is a wise choice for your home.

How Do Tankless Water Heaters Work

Tankless hot water systems work by heating your water supply directly on demand, which means if you use a lot of hot water, it promptly heats water that you need, without storing any surplus in a tank. When someone turns on a hot water tap in the home, a flow sensor detects the water flow and activates an electrical circuit to power the heating elements inside the unit.

The cold water enters the tankless heater and as the water flows by, it is heated by high-powered heating coils or burners that rapidly increase the water temperature. They only heat the water as water flows through the system at a given time, without storing any hot water.

Tankless heaters can increase water temperatures between 28 and 38 degrees Celsius, guaranteeing a consistent and infinite hot water supply.

Their compact, space-saving design also lends flexibility for creative installation options.

By only heating water on demand rather than maintaining a full water tankless systems, Tankless models are more efficient, often rendering tankless water heaters more eco-friendly as they avoid standby heat loss and can achieve energy efficiency of over 90%. Tankless heaters have built-in computers and sensors to control the heating process based on variables like the incoming water temperature and flow rate.

Benefits of Tankless Water Heaters

One of the major perks of tankless water heaters is their reduction of standby heat losses, which offers higher efficiency than storage options, ensuring an efficient hot water supply. This allows the hot water heater of the tankless variety to achieve energy factors over 0.90, meaning over 90% of the energy heat contributes directly to heating the water.

A tankless water heater can effectively avoid standby energy losses associated with maintaining a continuously heated volume of water, ensuring your hot water usage needs are met efficiently.

For households mindful of their hot water use, considering water heaters tankless in design, enlisting services like ours can help save money on annual water heating expenses by 24-34% when switching to a tankless system.

They continue to be recognised as tankless water heaters best for homes with daily ondemand hot water demands of more than usual as well. The compact, on-demand operation makes them a perfect complement to various type water heating solutions like solar panels for any home striving to diminish its energy costs and environmental footprint.

The continuous flow technology of tankless water heaters ensures a steady stream of hot water without interruption.

As soon as you turn on the hot water tap, they trigger to provide hot water sans a hot water tank, heating the flow to your preferred temperature. For conventional tank heaters, you eventually run out hot water stored and must wait for the tank to reheat before experiencing instant hot water again.

Tankless units ensure an endless supply of hot water, eliminating worries about shortages during peak demand. This makes them ideal for larger homes with greater hot water requirements. No more cold showers or waits to wash dishes ever again!

Tankless water heaters not only excel in energy efficiency but also save physical space compared to larger traditional models. The compact design of tankless heaters allows for flexible installation in small spaces like utility closets or walls.

Freed up floor area offers homeowners greater options for basement or garage storage, creating storage solutions tailor-made to their needs. In Sydney where space is valuable, tankless water heaters under home warranty are an excellent choice to maximise room and secure limitless hot water.

Energy Efficiency

Tankless water heaters offer superior energy efficiency, despite the higher initial cost compared to traditional tank models. This is because tankless heaters avoid standby thermal losses associated with keeping a tank of water constantly hot.

Tankless systems are notably energy efficient, with energy factors often exceeding 0.90, indicating that more than 90% of the consumed energy directly heats the water. Households using less than 550 litres of hot water daily can significantly cut annual heating bills by 24-34% with a tankless heater, one of the best for energy savings.

The improved efficiency of tankless gas water heaters leads to reduced energy bills and a more eco-friendly household. Their greener operation, attributable to how these heaters use energy, also helps reduce carbon emissions for environmental benefits.

Endless Hot Water

A key advantage of tankless water heaters is the provision of continuous, on-demand hot water. As soon as a hot water tap is turned on, the unit activates to rapidly heat the flowing water. This technology ensures you’ll never experience a shortage of hot water during a shower or laundry.

In contrast to traditional tank systems that eventually exhaust stored hot water, tankless models deliver an ongoing supply as needed. With their instant, unlimited supply, tankless water heaters meet the hot water needs of larger homes and manage simultaneous usage across multiple outlets.

The constant flow ensures every bathroom and tap benefits from gas tankless water heaters, as the heater can provide uninterrupted access to hot water.

Space Savings

There may also be costs for electrical upgrades to handle the power demands or venting for gas models.

Installing a gas tankless water heater, with an appropriate fuel source, often requires professional expertise to ensure the system is tailored to fit your specific needs. Gas electric considerations are important, as natural gas models, which can often be more cost-effective than purely electric systems, need suitable gas lines, proper exhaust venting to safely remove fumes, and strategic placement consideration to meet all hot water requirements. Electric models, such as an electric tankless water system, can require a dedicated 240V circuit with sufficient amperage for optimal operation.

Regular maintenance, including annual flushing, is necessary to maintain efficiency and prevent scale accumulation in tankless heaters. Gas models also require the pilot light and burners inspected, and parts like igniters and thermocouples that may need replaced more frequently, checked and substituted as needed. So while maintenance is straightforward, it requires diligence compared to passive storage tank water heaters.

Upfront Costs

A downside of tankless water heaters is their higher initial purchase cost in comparison with traditional storage tank models. Tankless units range in price from approximately $800 to $3,500, influenced by fuel type, flow rate, and the intricacy of installation.

Installation Considerations

Key conssting gas lines must be properly sized, or new lines installed, to deliver adequate gas flow.


Gas models require proper exhaust venting to remove combustion byproducts. Venting must be sized and positioned correctly for optimal performance.

Water Filters

Whole-home water filters protect the heat exchanger from scale buildup and debris that can reduce efficiency.

With strict specifications to meet, it’s highly recommended to have tankless water heaters installed by qualified professionals like the experts at Bossley Park Plumbing. Their extensive experience ensures the system your plumber installs is set up right the first time.

Maintenance Requirements

While tankless water heaters are highly reliable, they do require some annual maintenance to maximise performance and lifespan. Key tasks include:

Flushing the Heat Exchanger

Annual flushing is essential to remove scale buildup and debris from inside the heat exchanger. Buildup impedes water flow and heat transfer, reducing efficiency. Flushing should use descaling solutions specific to tankless heaters.

Inspecting Gas Components

Annual inspections are critical for gas models to ensure safe operation of the burner and to replace any worn components. Regular inspections and maintenance prevent potential issues by keeping all components in excellent condition.

Checking Electrical Connections

Electric tankless water heater units require checking power connections to contacts remain intact and wires are secure. This prevents electrical faults that could disrupt hot water delivery.

A modest investment in servicing tankless units yields reliable performance for years. Bossely Park’s qualified technicians handle all maintenance needs to optimise your system.

Making the Switch to Tankless

When deciding whether to switch to a tankless water heater, the first step is evaluating your household’s hot water requirements. Key aspects you do need to consider include:

Hot Water Usage

Analyse your peak and daily hot water usage to size your tankless unit properly. Units are rated on maximum flow rates, so ensuring you choose one that aligns with the volume water heaters use in your household is critical.

Home Compatibility

Consider if electrical/gas lines can support a tankless unit or if upgrades are needed. Also check there is adequate space for installation and proper ventilation for gas models.

Hiring a Qualified Plumber

Tankless water heater installation is complex, calling for qualified experts like the pros at Bossley Park Plumbing. Their extensive experience ensures your new hot water system’s proper setup and maintenance for reliable performance.

Though tankless heaters have a higher initial cost, the resultant energy savings over time can render them a prudent investment for suitable homes. Contact Bossley Park Plumbing to evaluate if going tankless aligns with your household’s needs and budget.

Conclusion: Is Tankless Right for You?

When comes to deciding whether to install a tankless water heater, the crucial factors hinge on your household’s hot water needs, installation expenses, and ongoing operational costs.

Tankless units provide superior energy efficiency and endless hot water but have a higher upfront investment. They make the most sense for your homes with significant hot water usage, sufficient electrical/gas capacity, and adequate space.

Carefully evaluate your daily hot water demand and consult qualified plumbers like the experts at Bossley Park Plumbing. They can assess your home’s compatibility and provide advice on whether tankless technology aligns with your budget and lifestyle needs.

To explore your options further and determine if switching to tankless is right for your home, Contact Bossley Park Plumbing today for everything you need know before you buy, to schedule a consultation. Call 1300 349 338 or email jobs@bossleyparkplumbingservices.com.au to connect with their team of professional plumbers.

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