Every homeowner knows the trepidation that often sinks into your stomach when you turn on the tap and lukewarm water begins to trickle out. You wait, hoping for the gush of hot water, but it never comes. If you’re experiencing your gas hot water not working, know that you’re not alone – this problem is more common than you think. And with the importance of hot water for everyday tasks, it’s only natural to feel alarmed and unsure about how to handle the situation.

Usually, when your gas hot water system gives up on you, it’s due to a specific reason – it could be a problem with the gas supply, a faulty thermostat, an issue with the pilot light, or perhaps your hot water system simply needs a bit of TLC. Luckily, understanding the common issues that affect gas hot water systems and their remedies is the first step to getting that satisfying blast of hot water back.

Quick summary

Your gas hot water may not be working due to issues with the gas supply, a malfunctioning thermostat, a problem with the pilot light, or heavy wear and tear. Recognising these problems and seeking professional intervention is essential to restoring hot water supply in your home.

What Could Potentially Go Wrong With Your Gas Hot Water System

Let’s dive a bit deeper into why your gas hot water might stop working. Problems can arise from numerous sources, but the most likely culprits are a disrupted gas supply, a defective thermostat, a malfunctioning pilot light, and the effects of continuous usage over time.

Understanding these typical issues can help you diagnose the problem faster and make informed decisions when seeking professional assistance. Fortunately, experts at Hot Water Now, are always at hand to offer the advice and services you need.

How to Diagnose Common Gas Hot Water Issues

Detecting the issue causing your gas hot water system to go cold can be as straightforward as checking the pilot light, inspecting the gas supply, or examining the thermostat. Here’s more on how to diagnose these issues:

  • One or All Outlets? If you have hot water in your shower but no hot water coming from your kitchen tap, it may not be your gas hot water system at all. A blocked or corroded kitchen tap should be replaced instead.
  • Gas Supply: If the gas isn’t flowing into your system, obviously, your water won’t heat up. Check whether other gas-powered appliances in your home are working. If they aren’t, this could indicate a wider issue with your gas supply.
  • Thermostat: The thermostat controls the water temperature in your system. A faulty thermostat may not detect when the water needs heating and hence fail to activate the heating mechanism.
  • Pilot Light: The pilot light is responsible for igniting the gas burner in your hot water system. If it goes out, your system loses its ability to heat water.

Professional And Effective Remedies To Get Your Gas Hot Water Working Again

In most cases, getting your gas hot water system back to its optimal performance will require professional assistance. Many homeowners hesitate to contact professionals, fearing the potential costs of hot water repairs. However, availing professional services can help avoid leading from one issue to a potentially more severe one, which could cost you more in the long run.

Experts will carry out a thorough inspection of your system, identifying and rectifying the issues causing the malfunction. They may even recommend a hot water system replacement, particularly if your system is old and frequently malfunctions due to wear and tear.

When Should You Reach Out To Professionals

It’s smart to seek professional help if your gas hot water system isn’t working, especially if you don’t know how to safely diagnose and rectify the problems yourself. Keep in mind, dealing with gas appliances requires a certain level of expertise and safety awareness. Hence, trying to fix these issues alone can be risky.

The moment you notice a change in your hot water supply, it’s recommended to get in touch with professionals. Some signs indicating that your system needs professional attention include incredibly low hot water pressure, water that’s too hot or too cold, and weird noises coming from the system. For a comprehensive understanding of these signs, this guide on low hot water pressure and hot water system leaks is a perfect place to start.


In conclusion, dealing with a gas hot water system that’s not working is undoubtedly frustrating. However, understanding the common causes can help you identify the problem faster and find the appropriate remedy. Remember, the key to restoring your hot water supply lies with an experienced team of hot water professionals.


Save time and $$$ with a no obligation quote from top Brisbane plumbers. It takes just 30 seconds.

So if your hot water system is giving you cold shoulders, contact Hot Water Now. Our team of hot water plumbers are dedicated to delivering timely, efficient and reliable services to get your system back in order. Visit our site today and request a quote!

For more insights into maintaining hot water systems, check out our blog post on types of hot water systems. To learn more about gas hot water systems, this guide from the U.S. Department of Energy also offers extensive information.

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