Hot Water System Repairs – What You Need To Know Before Calling A Professional Sydney Plumber

Hot Water System Repairs – What You Need To Know Before Calling A Professional Sydney Plumber

Hot Water Systems Overview

Hot water system repair or replacement can be expensive, so it’s important to arm yourself with information to get the most value for your money. While some hot water issues may be as simple as changing the thermostat settings, others may need water or gas leak repair or tank clean-up. Whatever the problem, it’s essential to get help from qualified plumbers who can accurately diagnose and repair the hot water system.

We’re going to take you through the most common hot water problems and how to tackle them. With some essential maintenance and safety tips to help you out when water heaters start acting up.


The Most Common Hot Water Problems

Most hot water problems make themselves known by no or slow hot water pressure, funky odours and changes in the water colour.

Read on to find some of the more frequent hot water issues and how to deal with them.

  • Why is my hot water not turning on?

    The thermostat might be set too low, or there could have been a power surge that ‘fried’ it. Either way, if you don’t see any spark when pressing the buttons, the chances are the problem lies with something else like a blown fuse or a tripped circuit in your home’s wiring system — a quick fix as long as they’re rectified quickly!


    You can try to fix the problem yourself if you’re feeling confident with basic repairs, but it’s best to let an expert handle this type of situation. When your pilot light is off or there’s no heat output from any source—even after checking everything else—call a professional for help! Your home may have issues due to pipe leaks which could lead to further damage in time without quick attention by somebody who knows what they are doing. Also, keep safety concerns at heart and never attempt work involving high voltage electricity.


    Lastly, if you smell a foul odour like rotten eggs near the heater accompanied by hissing sounds, you probably have a gas leak. In such instances, shut off the main gas supply switch and call in a hot water heater specialist immediately.

  • Smelly Or Discoloured Water

    Smelly water in the water heater arises when the water is left in the tank for long periods. It causes bacteria which needs to be flushed out, and the tank requires cleaning to remove the smell. To determine if the smell is coming from the heater, take some water from the cold tap. If only the hot water smells, then the issue lies in your hot water tank.


    Discoloured water is caused by sediment build-up in the hot water tank and requires the tank to be flushed to remove it. If left too long, it solidifies and collects at the bottom of the heater, restricting water flow and eventually damaging the system and the anode rod.


    Routine servicing, flushing the tank twice a year and maintaining a consistent temperature of the water helps prevent sediment buildup.

  • Unusual Sounds

    When you’re dealing with a noisy water heater, there are two most likely causes. The first is too much pressure inside and tight valves or relief tubes that don’t let it out fast enough when needed; this can be dangerous since high-pressure fluids will leak if left unchecked. The second could be a humming sound in electric heaters when the heating element is loose, this can be fixed by tightening it.


    Other hot water issues include unit and tank leakages, poor performance due to incorrect installation and malfunctioning elements or components. Timely repairs and preventive maintenance ensure a longer lifespan and lower repair costs down the track.

  • Old Hot Water System

    Is your hot water system over 8 years old?

    Frequent hot water repairs for lukewarm hot water, slow pressure and leakages can be more expensive in the long run. Consider investing in a good-quality hot water system that meets your requirements and space. It gives you the convenience of year-round hot water without the hassle of ongoing repairs with only routine maintenance for optimum functionality.


    Older water heaters consume more electricity and fuel, adding to the operating costs and needing continuous replacements to keep them functioning. On The Go Plumbing installs all types of hot water systems, offering expert recommendations to meet your hot water needs according to your budget with maximum energy efficiency.

Hot Water System Repairs And Replacement


On The Go Plumbing offers expert hot water installation, repair and maintenance services across Sydney by local and licensed plumbers. Whether you need emergency assistance for gas leaks or same-day hot water repair services, our reliable plumbers are only a call away.

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