Hot water systems work hard behind the scenes to keep your showers warm and dishes clean, but they’re often out of sight and out of mind − until something goes wrong.
Just like your car needs regular servicing to run smoothly, your hot water system also benefits from routine maintenance. But is it really necessary? And how often should it be done?
In this blog, we’ll break down why servicing your hot water system is important, what’s involved in a typical service, and how it can save you from unexpected breakdowns or costly repairs.
Whether you have a gas, electric, or solar unit, keeping your system in top shape can extend its life and improve efficiency. Let’s dive into why regular hot water system servicing is worth your time.
How Often Should You Service a HWS?
As a general rule, it’s a good idea to service your hot water system every 12 months. Regular servicing helps catch small issues before they turn into big, expensive problems. It also ensures your system is running efficiently and safely.
However, how often you should service your unit can depend on the type of system you have. For example, gas and electric storage systems typically need a professional check-up once a year, while continuous flow (instant) systems may require less frequent attention.
Solar hot water systems often need servicing every two years, but the booster components may need annual checks. Always check the manufacturer’s recommendations for your specific unit.
If your hot water has been unreliable or showing signs of trouble, don’t wait − book a service sooner rather than later. Staying on top of maintenance can help you avoid cold showers and costly replacements down the line.
What’s Involved in a HWS Service?
A professional hot water system service covers more than just a quick look-over − it’s a detailed check-up to ensure everything is working safely and efficiently.Here’s what a typical service usually includes:
- Inspection for leaks, rust or damage to the tank and pipes.
- Testing the temperature and pressure relief valve (TPR valve) to ensure it’s operating correctly.
- Flushing the tank to remove built-up sediment that can affect efficiency.
- Checking the anode rod (in storage tanks), which helps prevent corrosion.
- Examining electrical or gas components for safety and function.
- Inspecting thermostats and temperature settings for accuracy.
- Looking for signs of wear or ageing that might lead to future problems.
- Cleaning and checking solar panels or boosters (for solar systems).
Regular servicing helps extend the life of your system, lowers your energy bills, and reduces the risk of sudden breakdowns.
Signs Your System Needs a Service
Not sure if your hot water system needs a service? There are a few telltale signs that it might be time to call in a professional. Keep an eye out for the following:
- Inconsistent water temperature – Fluctuating between hot and cold? That’s a red flag. It could be your TPR valve.
- Strange noises – Banging, gurgling or rumbling sounds can signal sediment build-up.
- Discoloured or rusty water – This could indicate corrosion inside the tank.
- Low hot water pressure – A drop in pressure might point to blockages or internal issues.
- Leaks or pooling water – Even small drips can lead to big problems if left unchecked.
- Hot water running out quickly – If your system isn’t keeping up like it used to, it’s time for a check-up.
- A sudden spike in energy bills – An inefficient system works harder, costing you more.
If you notice any of these signs, don’t ignore them – book a service to prevent bigger issues down the line.
Benefits of Regular Servicing
Regular servicing of your hot water system might seem like just another chore, but it can actually save you time, money and stress in the long run. Here are some of the key benefits:
- Improved energy efficiency – A well-maintained system doesn’t have to work as hard, reducing your power bills.
- Longer system lifespan – Regular checks help prevent wear and tear, meaning your system can last years longer.
- Fewer breakdowns – Catching issues early reduces the chance of sudden failures or emergency repairs.
- Consistent hot water – Keep your showers hot and reliable with a system that runs smoothly.
- Better water quality – Removing sediment and inspecting internal parts helps maintain cleaner, fresher water.
- Enhanced safety – Regular inspections can identify gas or electrical faults before they become hazardous.
A little maintenance goes a long way in keeping your hot water system running safely and efficiently.
Can You Service a HWS Yourself?
While there are a few basic checks you can do at home, most hot water system servicing should be left to the professionals. You can visually inspect your system for obvious signs of damage, such as rust, leaks or strange noises.
It’s also fine to check the temperature setting or gently test the pressure relief valve − just be careful, as hot water is involved. However, anything involving gas, electricity or plumbing connections should always be handled by a licensed technician.
These systems are more complex than they appear, and attempting DIY repairs could void your warranty, cause injury, or even make the issue worse. Regular professional servicing ensures that your system is safe, efficient, and up to code.
So, while it’s great to keep an eye on things, it’s best to leave the hands-on work to the experts for peace of mind and long-term performance.
What Happens If You Don’t Service It?
Skipping regular servicing for your hot water system might not seem like a big deal – until something goes wrong. Over time, minor issues can build up and lead to costly or even dangerous problems.
Here’s what can happen if you don’t service your system:
- Reduced efficiency – Sediment build-up makes your system work harder, increasing energy use and bills.
- Shortened lifespan – Without maintenance, parts wear out faster and the entire system may need early replacement.
- Unexpected breakdowns – Small faults can turn into big failures, often when you need hot water most.
- Leaks and water damage – Undetected corrosion or pressure issues can cause leaks that damage your home.
- Poor water quality – Rust, sediment, or bacteria can affect the cleanliness and safety of your hot water.
- Safety risks – Gas or electrical faults left unchecked could pose serious hazards.
Regular servicing helps you avoid these headaches and keeps everything running smoothly.
Keep Your Hot Water System in Top Shape
Hot water systems are easy to take for granted – until something goes wrong. But with a little regular servicing, you can keep yours running smoothly, efficiently, and safely for years to come.
Whether it’s an electric, gas, or solar system, routine maintenance helps prevent unexpected breakdowns, keeps your energy bills in check, and extends the life of your unit. While you can do basic visual checks yourself, it’s always best to leave the full service to a licensed professional.
If you’ve noticed strange noises, inconsistent water temperature, or your system just hasn’t been looked at in a while, it’s probably time for a check-up. A well-maintained system means fewer cold showers, less stress and more peace of mind. So, don’t wait for a problem – get ahead of it with regular hot water system servicing.
Please note: This information is provided for advice purposes only. Regulations differ from state to state, so please consult your local authorities or an industry professional before proceeding with any work. See our Terms & Conditions here.
FAQs About Servicing Hot Water Systems
Do you have any questions about hot water system maintenance? We’ve got answers to the most commonly asked questions right here.
If you’re noticing things like inconsistent water temperature, strange noises, rusty or discoloured water, or water running out faster than usual, it’s a good idea to book a service. Even if everything seems fine, most systems should still be checked once a year to catch any hidden issues early.
You can do a few basic checks, like looking for leaks or testing the pressure relief valve, but most servicing tasks should be handled by a licensed professional. Hot water systems involve plumbing, gas or electrical work, and doing it yourself could be unsafe or void your warranty.
A standard service usually takes about 30 to 60 minutes, depending on the system and whether any issues are found. It’s a small-time investment for a lot of peace of mind.
