If you're wondering whether it’s time to say goodbye to your current hot water system, here are a few telltale signs to look out for.
Let’s face it: There are few things more jarring than starting your day with an unexpected cold shower. In most Aussie homes, the hot water system is one of those “set and forget” appliances. But like all good things, even your trusty old hot water unit has an expiry date.
If you’ve been wondering whether it’s time to say goodbye to your current hot water system, here are a few telltale signs to look out for—plus what to do next if a replacement is on the cards.
1. It's Just Getting Old
Hot water systems aren’t designed to last forever. Most traditional storage systems last around 8–12 years, while instantaneous (tankless) systems might stretch to about 15 years if properly maintained.
If yours is nudging the 10-year mark—or older—it might be time to consider an upgrade before it fails completely. After all, no one wants to be left without hot water in the middle of winter!
Tip:
Not sure how old your system is? Check the serial number on the manufacturer's label—it often includes the year of manufacture.
2. Rusty or Discoloured Water
Turned on the hot tap and noticed rusty, murky water? That’s usually a red flag. It could be internal corrosion inside the tank, especially if your home has a traditional steel storage system.
While a bit of brown water now and then could be from the pipes, consistent rust-coloured water means it’s time to get it checked. A rusty tank is a ticking time bomb that could leak or burst when you least expect it.
3. Leaks Around the Base
A little condensation or a few drops now and then might not be anything serious. But visible leaking around the base of the unit? That’s a clear sign something’s wrong—most likely a crack or corrosion in the tank. Once that starts, there’s no turning back. You’ll need to replace the unit before it floods your laundry or patio.
4. Hot Water Runs Out Too Quickly
If your household hasn’t changed in size but the hot water doesn’t stretch like it used to, your system might be losing efficiency. Sediment build-up at the bottom of the tank can reduce capacity, making it seem like you’re running out of hot water faster. Or the heating element might be struggling to keep up.
In either case, a professional can inspect it—but if the unit is on the older side, a replacement might be more cost-effective than repairs.
5. Strange Noises
Gurgling, banging, popping—your hot water system shouldn't sound like it’s boiling a cauldron. These noises are often caused by mineral build-up, especially in hard water areas. While flushing the tank might help in some cases, repeated noise usually indicates wear and tear that isn’t worth fixing.
6. Rising Energy Bills
An old, inefficient hot water system can chew through electricity or gas, leaving you with rising energy bills. Upgrading to a modern energy-efficient unit, like a heat pump or solar hot water system, can save money in the long run—not to mention reduce your home’s carbon footprint.
So, Should You Repair or Replace?
It depends on a few things:
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Age of the unit
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Cost of repairs vs. replacement
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Frequency of issues
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Energy efficiency of the current system
If your system is relatively new and it’s a minor fix, a repair might be worth it. But if it’s over a decade old and showing multiple signs of failure, replacement is usually the smarter option.
Ready to Replace? Don’t DIY—Call a Tradie
Swapping out a hot water system isn’t a weekend DIY job (tempting as it might be). In Australia, it’s actually illegal to install or replace a hot water system without a licensed plumber and electrician. You need someone qualified who knows the ins and outs—from selecting the right size and type, to safe installation and council compliance.
But finding the right tradie can feel like a job in itself… unless you use ServiceSeeking.com.au.
Why Use ServiceSeeking?
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Quick quotes from local licensed plumbers
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Read reviews and compare ratings
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Competitive pricing—tradies compete for your job
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Fast turnaround—many are available same or next day
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Peace of mind—you know they’re verified and insured
Instead of ringing around or trawling through social media, you can post your job in a few minutes and let the pros come to you.
Final Thoughts
If your hot water system is on its last legs, don’t wait for it to give up completely. A well-timed replacement can save you stress, money, and one seriously unpleasant shower. Keep an eye out for the warning signs, and if it’s time to make the switch, you’ll want a reliable tradie who knows what they’re doing.
Jump onto ServiceSeeking.com.au to get quotes, compare your options, and book someone local who can sort it out—before your hot water runs cold for good.
