What to Do If You Have No Hot Water – A Plumber’s Guide

There’s nothing worse than stepping into the shower, only to be hit with freezing water. If your hot water system has suddenly stopped working, don’t panic – we’re here to help! At Plumbing on the Peninsula Pty Ltd, we’ve helped countless locals across the Mornington Peninsula get their hot water running again.

Here’s what you need to know when you’re faced with no hot water.

Common Reasons Your Hot Water System Isn’t Working

1. Power or Gas Supply Issues

If your electric hot water system isn’t working, the first thing to check is your switchboard. A tripped circuit breaker could be cutting power to the unit. For gas hot water systems, check that your gas supply is on and that other gas appliances (like your stovetop) are working.

2. Pilot Light is Out (Gas Systems)

Gas hot water systems rely on a pilot light to stay lit. If the pilot light has gone out, your unit won’t heat water. Some modern systems have electronic ignitions, while older units may require manual relighting.

3. Thermostat Problems

Your system’s thermostat controls the temperature of your water. If it’s faulty, your hot water may be too cold, too hot, or not working at all. A plumber can test and replace the thermostat if needed.

4. Sediment Build-Up in the Tank

Over time, sediment and mineral deposits can collect in your hot water system, especially in older units. This reduces heating efficiency and can eventually block the system completely.

5. A Leaking Hot Water System

If you notice water pooling around your system, it could be a sign of a leak. Leaks can occur due to age, corrosion, high pressure, or damaged valves. Even a slow, unnoticed leak can cause your hot water system to work overtime, leading to a significant increase in your water and gas bills. If the system is constantly losing water, it has to refill and reheat more frequently, using up unnecessary energy.

Beyond increased utility costs, leaking water can cause serious damage to your home. Over time, moisture buildup can lead to mould growth, wood rot, and structural damage in the surrounding areas. If the leak is severe, it can even result in burst pipes or flooding, leading to expensive emergency repairs.

To prevent further damage and unnecessary costs, it’s crucial to call a professional plumber immediately if you suspect a leak. A quick fix now can save you from major repairs and higher bills down the track.

How to Fix a Hot Water System That’s Not Working

🔹 Check the Power or Gas Supply – Reset circuit breakers and ensure your gas supply is active.
🔹 Inspect the Pilot Light – If it’s out, follow your manufacturer’s instructions to relight it.
🔹 Adjust the Thermostat – Try setting it to 60°C and see if that restores hot water.
🔹 Look for Leaks – If your system is leaking, turn off the water supply and call a plumber immediately.
🔹 Flush the System – If you suspect sediment build-up, a professional can flush the tank to restore efficiency.

When to Call a Plumber?

Some hot water issues can be easily fixed, while others require professional repairs. If you notice:
✅ A persistent lack of hot water
✅ low hot water pressure
✅ Strange noises coming from the system
✅ Rusty or discoloured water
✅ A leaking hot water unit

Then it’s time to call Plumbing on the Peninsula. We offer fast and reliable hot water repairs across the Mornington Peninsula.

Need Hot Water Fast? Call Plumbing on the Peninsula!

As a small, local, family-run business, we understand how important reliable hot water is for your home. If your hot water system isn’t working, give Aaron a call on 0413 947 906, and we’ll have you back in hot water in no time!

📍 Servicing Mornington Peninsula & surrounding areas
💦 Hot water repairs, replacements & new installations
✅ Trusted, professional, and affordable service

For expert hot water services, trust Plumbing on the Peninsula Pty Ltd!