water heater leak

Know When to Replace a Hot Water Tank in 2023 (Expert Guide)

We all hate those “uh-oh” moments. After a couple of minutes in the shower, your hot water system begins to run cold. Or how about you start noticing sounds emanating from your hot water system or there are leaks around it your tank, or you see the water coming from it is a rusty color.

When you are faced with any of those situations, don’t say “uh-oh” any longer. Those are warning signs that are telling you it may be time to have a new hot water system in your Sutherland Shire home.

So we’ll explain these and other signs to help teach you what you need to know about replacing a hot water heater tank, and how much it may be as far as replacement water heater or hot water system installation costs with updated hot water system prices.

Replacing a Hot Water Tank? Here Are Some Clues to Help

The average water heater is under warranty for anywhere from five to 15 years. That’s an indication that the manufacturer believes is the average lifespan of the unit.

And in truth, the average water heater will give you from eight to 14 years of dependable use until its parts can begin to wear down.

That’s not to say that with proper usage and yearly preventive maintenance, your appliance may give you more years than average. It might.

If you notice any of the following warning symptoms in your hot water heater tank, it may be time to consider replacing it with a new one. Here are the following warning symptoms and let them be your guide to replacing a hot water heater tank:

rusty-water1. Warm or cold water

If you notice that your hot water system is not heating water properly, it could be a sign that the heating element is faulty and needs to be replaced. The heating element is responsible for heating the water in the tank, and if it is not functioning properly, it can lead to lukewarm or cold water. Additionally, if there is not enough hot water, it could be a sign that the tank is too small for your household’s needs or that there is a problem with the thermostat.

2. Dip tube issues

The dip tube is a plastic tube that runs from the cold water inlet to the bottom of the tank. Its job is to direct cold water to the bottom of the tank where it can be heated while keeping it separate from the hot water that has already been heated. If the dip tube is not functioning correctly, it can lead to cold water leaking into the hot water supply. This can result in lukewarm or cold water coming out of your hot water system, even if the hot water heater tank is full.

3. Discolored water

If you notice that the water coming from your hot water system is discolored, it could indicate that rust or corrosion is present within your tank. This can occur over time as tanks made of steel can develop rust. To determine if rust is present, you can check for signs of rust around your tank. If you see rust, it is likely that rust is present on the inside as well, and the quality of your water may be impacted. In this case, it is important to consider hot water system replacement or a hot water system installation.

rusty-water-tank4. The tank’s age

As we mentioned above, the average lifespan of most units is from eight to 14 years, depending on the type of unit you have. Your hot water system should clear the warranty for years. You should have your best local affordable Sutherland Shire plumber perform preventive maintenance on your appliance annually once you’ve purchased it or moved into your home. This service is even more critical if your water heater has survived past its manufacturer-suggested warranty. Failing to do so could see you needing hot water tank replacement earlier than you’d like.

5. Failing drain valve

Hot water tanks contain several parts, and sediment and debris can naturally collect and flow with the water, building up over time within the tank. This can cause clogs and damage to the system. As part of annual preventive maintenance, flushing the drain valve can help prevent excessive sediment buildup and keep your tank functioning properly. If the drain valve is failing or not functioning correctly, it can lead to more significant issues with your hot water heater and mess up your hot water system.

6. Tank leaks

If you discover leaks in your tank, it is likely that something is broken or damaged and the tank will need to be replaced. Leaks can lead to further damage, and if not addressed promptly, can result in flooding and water system damage to your home. Regular inspection and maintenance from professional plumbers can help detect potential issues before they escalate to this level, potentially saving you from costly hot water system repairs or hot water replacement.

Replacing a Water Heater? Here’s the Average Cost:


If you are considering having a new hot water system, it is important to have an understanding of the potential cost involved. The hot water system installation costs or replacement costs of a hot water system can vary depending on several factors, including the type and style of the model you choose.

There are several types of hot water systems available, including electric hot water systems, gas hot water systems, solar hot water systems, and heat pump system varieties, as well as storage tank and on-demand tank models. The cost of each type can vary significantly, with some types being more expensive than others.

In Australia, the cost of replacing a hot water system can range from $450 to $5,000, depending on the type and style of the model you select. The most common type, which is the storage tank model powered by either gas or electric, is typically the least expensive option. On the other hand, the more high-end solar hot water systems and heat pump water heater can cost anywhere from $3,300 to $5,000 or more.

When considering the cost of replacing your hot water system, it is important to factor in the long-term savings that can be achieved by investing in a more energy-efficient model. While the initial cost may be higher for some models, the savings in energy costs over time can make up for the difference.

It is always best to consult with a professional plumber to determine the best hot water system installation or hot water system replacement option for your specific needs and budget. They can provide expert guidance on the various types and styles available and recommend the best option for your home and household’s needs.

Related article: Hot Water Tank Replacement Costs

When It’s Time for Hot Water Tank Replacement, Trust the Pros

Hot water is an essential component of modern-day living, and a reliable hot water unit is a necessity for any home or business. Over time, tanks can begin to show signs of wear and tear, and eventually, they will need to be replaced. When this time comes, it’s important to trust the experts to ensure a smooth and stress-free tank replacement process.

At Damien McEvoy, we have years of experience in hot water systems replacement, hot water repairs, and hot water installation. We understand the importance of having a reliable and efficient hot water system, and we are committed to providing our clients with the best possible water service.

If you’re unsure whether or not you need hot water unit replacement, our team of reliable and experienced plumbing professionals can help. We can assess the condition of your current hot water unit and provide you with honest and informed advice on whether or not a replacement is necessary. We’ll take the time to answer any questions you may have and provide you with a range of options to fit your budget.

When it comes to hot water unit replacement, our team of hot water specialists has the expertise and resources to get the job done right. We can help you choose the right size and type of tank for your home or business, and we’ll ensure that the hot water installation is completed to the highest possible standards.

In addition to hot water replacement, we are also experts at hot water system repairs and any type of hot water system installation you may desire. We work with all makes and models of water heaters, including conventional tank models and tankless water heaters, and we can provide you with the best water service.

So if you’re experiencing emergency plumbing services on your hot water systems and think it may be time for hot water unit replacement or hot water repairs, don’t hesitate to call us today for a free no-hassle consultation. We’ll work with you to find the best solution for your hot water needs and ensure that your hot water problems are under control.

About The Author


Matt Little is an Australian-born entrepreneur who started his journey as a plumber. With a passion for innovation and creativity, he turned his career towards business and is now a content manager and co-owner at Damien McEvoy Plumbing. Matt's diverse background and unique perspective have made him a valuable asset to his team and a thought leader in his field.

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