Hot Water Issues: Do You Need A Plumber Or Electrician?

There is nothing worse than turning on the tap and finding there is no hot water. Whether you are trying to take a shower, wash the dishes, or run a bath, hot water is a daily essential. When something goes wrong, it can be hard to know who to call first.

This guide helps you decide whether to call a plumber or electrician when your hot water system is not working. From common faults to warning signs, we break down what each trade handles and how to get the issue fixed fast.

Do You Have No Water at All

If you turn on the hot tap and no water comes out, this is usually a plumbing issue. The problem may be caused by:

• A water supply disruption

• A blockage or clog in the pipes

• A faulty valve or fitting

• An airlock in the system

Try This First

Check the cold water inlet valve on your hot water system. This is usually located on the lower side of the tank. If the valve is turned off, switch it back on and test the tap again. If it is already on, or the problem persists, it is time to call a licensed plumber.

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Is Water Coming Out But It Is Cold

If water flows from the tap but it is cold, the problem is likely electrical, especially if you have an electric storage hot water system. The heating mechanism may not be working properly.

Here is how to check:

Step 1: Have you used all your hot water

If your system is on an off-peak electricity tariff, it only heats water overnight. Using too much water in the morning or throughout the day might mean you have simply run out. Wait until the next cycle to see if it heats back up.

Step 2: Test the temperature pressure relief valve

Open the relief valve slightly (usually at the top of the tank) and let water run down the pipe. Feel the water with care.

• If the water is cold, the issue is likely electrical

• If the water is tepid or warm, the tank is heating but the hot water is not reaching your taps, which suggests a plumbing issue

Step 3: Look for signs of electrical failure

If your water is consistently cold, and there are no leaks or blockages, the issue may be:

• A faulty thermostat

• A tripped circuit breaker

• A blown element

• A timer or off-peak setting that needs adjusting

In these cases, it is best to call a licensed electrician with experience in hot water systems.

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Relief Valve Leaking

All hot water systems release a small amount of water from the pressure relief valve. This is normal and prevents pressure build-up in the tank.

However, if the valve is leaking more than 500 millilitres per day, this may indicate a plumbing problem.

Common causes include:

• Worn or damaged relief valves

• Excessive internal pressure

• Faulty fittings or corroded pipework

A licensed plumber can test the system, replace the valve if needed, and ensure everything is operating safely.

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Who to Call: Plumber or Electrician

Here is a quick reference guide for the most common hot water issues:

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FAQs

Why is the water rusty or dirty

Discoloured hot water is usually caused by internal corrosion in the tank or pipes. If the rust is coming from the inside of the system, it is often a sign that your tank may be reaching the end of its life.

Call a plumber to inspect the system and test your pipes. They can recommend whether to flush the tank or replace the unit.

Will I need to replace my entire system

Sometimes, yes. If your hot water system is more than ten years old, breaks down often, or no longer meets the needs of your household, it may be time to upgrade. Other signs you may need a new system include:

• Increasing energy bills

• Water that never reaches full heat

• Visible corrosion or leaks

• Reduced water pressure

Your plumber or electrician can provide a full assessment and help you choose the best system for your home.

How often should I service my hot water system

We recommend booking a service once a year. Regular maintenance:

• Reduces the risk of breakdowns

• Keeps the system working efficiently

• Helps extend the life of the tank and its components

During a service, a licensed plumber or electrician will inspect all major parts, test the relief valve, check for leaks, and clean out any sediment build-up.

Which type of hot water system is best

That depends on your household size, energy preferences, and budget. Common options include:

• Electric storage systems – Easy to install and reliable

• Gas hot water systems – Fast recovery times and good for large households

• Instantaneous or continuous flow – Heat water on demand with no storage tank

• Solar hot water systems – Use the sun to reduce energy bills, often with an electric or gas booster

Oceanside Services can assess your home and help you choose the right model.

Can you repair gas hot water systems

Yes. In addition to licensed plumbers and electricians, our team includes qualified gas fitters who can diagnose and repair gas hot water systems. If your unit is not heating, leaking, or needs replacing, we will handle everything from diagnosis to installation.

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Call Oceanside for Both Plumbing and Electrical Help

Hot water problems can be stressful, especially when you are not sure who to call. At Oceanside Services, we have qualified plumbers, electricians, and gas fitters on staff. That means one call to us is all it takes to diagnose and fix your hot water issue properly.

Whether the problem is electrical, plumbing, or both, we have the skills to sort it out quickly and safely.

Call 07 5391 3580 or book online to get your hot water flowing again.