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Author: Jamie Thornton, Home Maintenance and Lifestyle Blogger
Brisbane winters are mild. I know, I know. People from other Australian cities roll their eyes when we complain about the cold. But here’s the thing nobody tells you when you move to Southeast Queensland: Brisbane homes are not built for cold weather. And that creates its own set of problems when the temperature drops.
I learned this the hard way a few winters ago when I woke up to no hot water on a particularly cold July morning. Turned out the pilot light on my hot water system had gone out, something that apparently happens more often in winter than any other time of year. A simple fix once I knew what it was. But it sent me down a rabbit hole of figuring out what else I should actually be maintaining on my home’s plumbing during the cooler months.
Turns out, quite a bit.
Why Winter Plumbing Maintenance Actually Matters in Brisbane
Brisbane doesn’t get the freezing temperatures that cause burst pipes in colder climates. But that doesn’t mean your plumbing is completely off the hook during winter.
A few things happen during the cooler months that are worth paying attention to. Hot water systems work harder. Water pressure can fluctuate. Pipes that run through exposed areas like under elevated homes or along external walls can be more vulnerable than you’d expect on a cold night. And because Brisbane homes are often older, built in an era when plumbing standards were very different, the systems themselves may already be operating closer to their limits than you realise.
Add in the fact that most people have longer, hotter showers in winter (guilty), run more hot water overall, and the whole hot water system is under more sustained pressure than during the warmer months.
It’s also just good timing. Winter is quieter. The garden isn’t demanding your attention every weekend. It’s actually a great season to do a proper walk around and check things you’d normally overlook.
Start With Your Hot Water System
This is the big one. And it’s where most winter plumbing problems in Brisbane homes originate.
According to the team at Watermark Plumbing, hot water systems are the number one call-out during Brisbane winters, making an annual check before the cold months one of the simplest ways to avoid an emergency.
Hot water systems, whether electric storage, gas storage, or heat pump, have a component called a pressure relief valve. It’s a safety device that releases excess pressure from the tank. Over time these valves can corrode, leak, or fail entirely, and most homeowners have never once looked at them.
The pressure relief valve should release a small amount of water when tested, then stop. If it drips continuously or doesn’t move at all, it needs attention. This is a job for a licensed plumber rather than a DIY project, but knowing to check it puts you ahead of most people.
Also worth doing: check around the base of your hot water unit for any signs of rust, moisture, or corrosion. A small patch of discolouration on concrete can be easy to ignore. But it can also be the first sign that your unit is nearing the end of its life.
Hot water systems typically last somewhere between eight and fifteen years depending on the type, water quality, and how well they’ve been maintained. If yours is getting toward that upper end and you’re noticing anything unusual, winter is a good time to get it assessed before it fails on a cold morning.
Check Your Exposed Pipes
Brisbane homes, particularly older Queenslanders and post-war houses, often have pipes running through subfloor spaces, along external walls, or in roof cavities. These aren’t as well insulated as pipes running inside walls and they’re more exposed to temperature changes overnight.
Brisbane doesn’t get frosts often, but it does get them occasionally, particularly in the western suburbs, the foothills around Samford, and other slightly elevated areas. A temperature that dips close to zero overnight is enough to cause problems with older or already weakened pipes.
Walk around the outside of your home and look at any visible pipework. Are there signs of previous repairs? Discolouration on the pipe surface? Any sections that look bowed or under stress? These things are easy to miss when everything is working fine but they become expensive problems quickly if a pipe gives way.
Look at Your Outdoor Taps and Garden Connections
Most Brisbane homeowners have at least one outdoor tap and possibly connections for irrigation systems or garden hoses. These are often the last things to get any attention during a maintenance check.
Give your outdoor taps a look over. Turn them on and off to check they’re not dripping or stiff. A dripping outdoor tap might seem like a minor annoyance but it wastes a surprising amount of water over a season and can indicate a worn washer that’s about to fail more completely.
If you have an irrigation system, winter is often when it gets used less frequently. Pipes that sit without regular water flow can develop issues that aren’t immediately obvious. Running the system through its full cycle every few weeks, even if the garden doesn’t strictly need it, keeps everything in working order and lets you spot any problems before the weather warms up and you actually need it.
Check Your Water Pressure
This one surprises people. Water pressure can fluctuate more in winter, partly because cold water is denser and behaves slightly differently in pipes, and partly because demand on the local water network changes.
Too-high water pressure is actually one of the most common causes of plumbing damage in homes. It stresses joints, wears out washers and valves faster, and can shorten the life of appliances like dishwashers and washing machines.
You can buy a simple pressure gauge from a hardware store for a small cost and attach it to an outdoor tap to check your home’s pressure. The acceptable range for residential properties in most Australian states is around 500 kilopascals or less. Your water authority’s website will have the specific guidance for your area. Urban Utilities, which services much of Brisbane and the surrounding region, has useful information on pressure and general water system maintenance on their website at urbanutilities.com.au.
If your pressure is consistently high, a plumber can install a pressure limiting valve, which is a relatively inexpensive fix that protects your whole plumbing system.
Don’t Forget the Drains
Winter in Brisbane brings rain. Sometimes a lot of it. And drains that are partially blocked by leaf litter, built-up debris, or years of soap and grease accumulation can handle light use fine but overflow when they’re suddenly being asked to deal with significant water volume.
Clear your external drains and gutters before the wet weather arrives. It’s the kind of job that takes an afternoon and saves you from a much bigger problem later.
Inside the house, it’s worth flushing your drains with hot water periodically through winter. Kitchen drains in particular accumulate grease and fat that solidifies more readily in cooler weather. A flush of boiling water every few weeks keeps things moving.
If you’ve got slow drains anywhere in the house, winter is the time to address them rather than waiting until the problem gets worse. A drain that’s draining slowly is a drain that’s on its way to not draining at all.
Check Toilet Cisterns for Slow Leaks
Here’s one most people genuinely never think about. A slow leak from a toilet cistern into the bowl wastes a significant amount of water without ever being visible on the floor. The water just trickles quietly into the bowl and disappears.
The test for this is almost embarrassingly simple. Put a few drops of food colouring into the cistern. Don’t flush. Wait about fifteen minutes and then check the bowl. If the colour has appeared in the bowl without flushing, you have a leak. Usually this is a worn flapper valve, which is an inexpensive repair.
Given water bills in southeast Queensland have been rising steadily, fixing a leaking cistern is the kind of thing that pays for itself quickly. Seqwater publishes useful household water saving guidance that’s worth a look at seqwater.com.au.
Consider Getting a Professional Inspection
I’m a big believer in understanding your own home. Knowing where your water meter is, where your main shutoff valve is, what your pipes are made of. That knowledge is genuinely useful in a crisis.
But there’s a limit to what a homeowner can assess without proper equipment and training. A licensed plumber doing a proper inspection can check things like water pressure at multiple points in the system, the condition of internal pipe joints, the state of your hot water system’s anode rod (which protects the tank from corrosion and should be replaced periodically), and any early signs of root intrusion in drainage pipes.
If your home is more than twenty or thirty years old and you’ve never had a professional plumbing inspection, winter is genuinely a good time to book one. Not because something is necessarily wrong, but because knowing the actual state of your plumbing is useful information.
In Queensland, you can verify that any plumber you hire holds a current licence through the Queensland Building and Construction Commission at qbcc.qld.gov.au. It takes about thirty seconds to check and it’s always worth doing before letting anyone work on your home.
Know Where Your Main Shutoff Is
This is less a maintenance tip and more basic preparation. But I’d be doing you a disservice if I left it out.
Do you know where your home’s main water shutoff valve is?
If a pipe bursts or a fitting fails, the first thing you need to do is turn off the water supply to the house. If you don’t know where that valve is, finding it under pressure (no pun intended) while water is spraying somewhere it shouldn’t be is not fun. I know this from experience.
Find it now. Make sure it actually turns and isn’t seized from years of sitting in the same position. If it is seized, get a plumber to service it. A shutoff valve that doesn’t shut off is worse than not having one.
A Few Small Things Worth Doing This Weekend
Not everything on this list requires a professional or even much time. Here are some genuinely quick wins:
Check under every sink for signs of moisture, drips, or discolouration. It takes two minutes and catches small leaks before they become large ones. Check the seals around your shower and bath. Cracked or missing silicone lets water into the wall cavity where it causes damage that’s invisible until it’s expensive. Run hot water to all the taps in rooms that aren’t used often to keep the traps full and prevent any sewer gas from working its way back.
Brisbane’s winters are short. The season where these issues are most likely to show up is only a few months long. A bit of time spent checking things over now genuinely reduces the chance of a cold morning problem that could have been avoided.
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