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Boiler Breakdown: What to Do If Your Heating System Fails

There’s nothing worse than your heating system breaking down, especially during the colder months. Whether you’re waking up to a cold house or office on a winter’s morning or your hot water cuts out just when you need it most, a boiler breakdown can feel like a major inconvenience.

But don't worry - Smart Heating are here to help you understand what to do when things go wrong with your home heating system.

First Things First: Stay Calm and Assess the Situation

The first thing to do when your boiler isn’t working is to stay calm. In many cases, boiler issues can be resolved quickly and knowing what steps to take can help prevent further damage.

Here’s what you can do right away:

  • Check The Thermostat

Sometimes, the issue is as simple as the thermostat being set too low or accidentally turned off or batteries need replacing.

  • Check For Error Codes

Modern boilers often display error codes to pinpoint the issue. Identifying error codes to our engineers helps diagnose and fix problems more quickly.

  • Look for Leaks

If you notice water leaking from your boiler, it’s important to turn the system off immediately to avoid further damage.

Why Is Your Boiler Not Working?

There are several, common reasons your boiler might stop working. Whether you have a traditional, hydrogen, next-gen, LPG or heat pump system, the causes can vary. Here’s a quick overview:

  • Low Water Pressure

This is a common issue and can cause the boiler to shut down. It’s easy to check and often can be resolved by topping up the pressure via the filling loop.

During colder months, your condensate pipe can freeze, causing your system to lock out. If you spot an ice block, defrosting the pipe should help get the system back to normal.

  • Faulty Thermostat

If the thermostat isn't reading the right temperature, your heating might not kick in as expected.

  • Broken Pump or Motor

If your boiler’s circulation pump or motor isn’t working, it could prevent hot water from circulating through your radiators or taps.

  • Pilot Light Issues

For older boilers, if the pilot light goes out, your system won’t heat. Checking the pilot light and reigniting it (safely) can sometimes solve the issue.

When to Call a Heating Engineer

If your boiler isn’t working despite simple troubleshooting, it’s time to call a professional. Smart Heating are here to help you with repairs, no matter what type of system you have.

Here’s when you definitely need to call us:

  • The Boiler is Leaking

Leaks can cause serious damage to your home and your heating system, so it’s important to address them quickly.

  • Error Codes Persist

If the boiler keeps displaying an error code you can't resolve, professional assistance is needed to ensure the system is running safely.

  • Boiler is Making Strange Noises

Unusual noises like banging or gurgling can indicate a buildup of air or sludge in the system or even a fault with the pump.

Whatever your heating system is powered by, we can get it back in working order. We understand different types of heating systems and can diagnose and repair issues quickly.

Should You Repair or Replace Your Boiler?

Sometimes, a breakdown might signal the end of your boiler’s lifespan, especially if it’s an older unit. If your system is over 10-15 years old frequent boiler repair services may become more costly than a replacement.

Here are a few things to consider when deciding between repair and replacement:

  • Age Of the System

Older boilers, especially traditional ones can be less efficient and more prone to breakdowns. Newer, next-gen systems or heat pumps may be worth considering for long-term savings.

  • Frequency of Breakdowns

If you’re always having issues with your current boiler, it might be time to think about upgrading to something more reliable and energy efficient.

  • Efficiency

Newer boilers, including hydrogen and heat pumps, are more energy-efficient and can be more suited to the energy use of your lifestyle, meaning they can save you money on your heating bills.

We can help guide you through the decision-making process, whether that means repairing your existing system or upgrading to a more modern, smart heating solution.

Prevent Future Boiler Breakdowns

To avoid a heating system breakdown in the future, regular boiler maintenance is key. We recommend annual boiler servicing to keep your system running safely, smoothly and efficiently. This can help identify potential issues early, before they turn into costly repairs.

During a service we:

  • Check boiler pressure and gas flow

  • Inspect for leaks and signs of wear

  • Ensure safe operation and efficiency

  • Clean components to keep the system running smoothly

A boiler breakdown can be frustrating, but with the right help, it doesn’t have to ruin your day. Whether you have a traditional boiler, hydrogen-ready system, hybrid or split system, LPG boiler or heat pump, Smart Heating are here to diagnose and fix the issue.


Are you based in Norwich or the surrounding areas? If your boiler isn’t working properly, get in touch with us today on 01603 457009 to find out how we repair or upgrade your heating system.

Book a service or maintenance check with us now - and enjoy a warmer, more cost-efficient home.

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