A working hot water system is a big part of modern comfort. But like all home appliances it doesn’t last forever.

Knowing when to replace it is important to keep enjoying hot water. Here are five strong reasons to consider replacing your hot water system.

Woman using hot water

Dollar Wise Plumbing and Gas is your go to place for plumbing and gas services especially for hot water system installations and repairs. Our experienced team makes sure your home has reliable and efficient hot water.

We work with many types of hot water systems including tankless, solar, heat pump and traditional tank systems. At Dollar Wise we care about giving good service and keeping our customers happy and safe.

We’ve built a name for being the reliable choice for hot water system plumbing over many years. With modern tools deep knowledge and a focus on customer needs Dollar Wise Plumbing and Gas is the top choice for hot water system services.

Choose Dollar Wise for a smooth, affordable and long lasting solution for your hot water needs.

Ageing System 

Hot water systems last around 8 to 12 years depending on how good they are and how well they are looked after. As they get older, parts can wear out or rust making the system less efficient.

An old system might not heat water well or take longer to do so. It might also break down more often leaving you without hot water and facing big repair bills. If your water starts to look discoloured or tastes metallic it might be time to replace the system.

Rising Energy Bills

Hot water systems can make your energy bills go up. An old or failing system can use more energy to heat water. This can make your bills higher.

New hot water systems are usually made to use less energy. They use modern tech to lower energy use which can also lower your bills.

By swapping your old system for a new, energy saving one you can enjoy hot water without worrying about cost. Plus energy saving systems are better for the environment reducing your home’s carbon footprint.

Inconsistent Hot Water Supply

Having hot water when you need it is important especially when it’s cold. If your hot water is too hot, too cold or takes too long to get hot your system might be failing.

Problems like a broken heating part thermostat issues or build up inside the tank could be the cause. Getting a new system will give you reliable hot water.

New models have better technology for quick and accurate heating giving you comfort whenever you need it.

Frequent Repairs

If your hot water system breaks down a lot and needs many repairs it’s likely getting old. Each repair costs money for parts and for the work done.

Over time these costs add up and getting a new system may save you money. Also dealing with repairs can be stressful and time consuming.

Man installing hot water system

A new system with a new warranty gives you peace of mind and reliable performance. Modern systems often have longer warranties too which means less worry about repair costs.

Advancements in Technology

Hot water system technology has gotten better over time aiming to work better, save energy and be easy to use. Modern systems often have smart controls you can use on your phone to change temperature set heating times and check energy use.

This helps you get hot water the way you want while using less energy. New systems also have better safety features like anti scald technologies and better pressure relief valves for safer use.

They also help in reducing greenhouse gas emissions which is good for the environment. Modern hot water systems can also use renewable energy like solar or heat pump technology which lowers operating costs and is better for the environment.

Cost Benefit Analysis

Investing in a new hot water system may feel like a big expense at first. However when compared to the ongoing costs of fixing an old inefficient system it often turns out to be a more budget friendly choice in the long run.

Here’s a breakdown of the costs:

Repair Costs:

    • Let’s say the average repair cost is AUD 300 and you need repairs every six months. Over three years you would spend AUD 1,800 on keeping the old system running.

Increased Energy Bills:

    • An inefficient system can also increase your energy bills. If we assume an extra cost of AUD 15 per month due to inefficiency over three years this adds up to AUD 540.

Replacement Parts:

    • The cost of replacement parts can also add up. If we assume an average cost of AUD 150 per year this amounts to AUD 450 over three years.

Total Cost over three years: AUD 2,790

New System Cost:

    • A new energy efficient hot water system may cost around AUD 1,200 to AUD 1,800 depending on the type and model.

Reduced Energy Bills:

    • A new system could save around AUD 15 per month or more on energy bills amounting to a saving of AUD 540 over three years.

Total Cost over three years: AUD 1,660 to AUD 2,260 (including purchase price)

The comparison above shows that investing in a new system could save you money over a period of time.

Besides you get the added benefits of a reliable hot water supply and better energy efficiency.

Types of New Hot Water Systems

There are different types of hot water systems available now because of new technology. Here are the main types:

  • Tankless (On Demand) Systems: They heat water only when you need it which can save a lot of energy. They are small and give endless hot water but might find it hard to supply many taps at once.
  • Heat Pump Systems: They use heat from the ground or air to warm the water. They save a lot of energy but can cost more at first. They work best where it’s warm.
  • Solar Water Heaters: They use sunlight to heat water which is good for the environment and can save money on energy. They can cost more at first but local discounts might help lower the price.
  • Traditional Tank Systems: They are common and usually cheaper to install. But they can use more energy and need more space.

Comparing these systems in terms of cost, energy-saving, space needed, and ease of installation can help decide what’s best for you.

Impact on the Environment

Getting a new energy saving system is good for reducing harm to the environment. New systems use less energy which lowers carbon emissions.

For example tankless systems don’t heat water all the time which saves energy.  Also  heat pump and solar systems use renewable energy which is good for the environment.

Many new models use eco  friendly materials and last longer which reduces waste. Getting a modern, energy saving hot water system is a step towards a greener home.


Replacing an old or broken system with a new one is a smart choice for a better home saving money in the long run and getting reliable hot water.

It’s good to check your current system against the reasons given above.

If your system has any of these issues getting a new advanced, energy saving hot water system is a wise decision.

The cost of a new system is worth it because of the long term benefits like lower energy bills, less repair costs, better safety and always having hot water when you need it.

hot water system