Boilers are essential for keeping homes warm, especially during winter. However, like any appliance, they can develop issues over time. Recognising the warning signs can save you from unexpected breakdowns and costly repairs. Here are five common signs your boiler might need attention.

Leaks

Water leaks are a common sign of a malfunctioning boiler. These could be due to corroded pipes or high-water pressure. While adjusting the pressure might fix minor issues, a corroded pipe may require replacement, with costs potentially reaching £700. Regular inspections can help detect leaks early, minimising repair costs.

Unusual Noises

Strange noises, such as banging or humming, can indicate issues within your boiler. These sounds may result from limescale build-up, trapped air or loose components. For example, a limescale-induced blockage might require a power flush, costing around £450, while trapped air or loose parts could necessitate a standard boiler repair.

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Faulty Pilot Light

A faulty pilot light can prevent your boiler from functioning correctly. Common causes include a blocked jet or a dirty flame sensor. Cleaning the sensor may resolve the issue, but replacement costs are relatively low at around £100.

Bad Smells

Unpleasant odours, such as a metallic scent or rotten egg smell, could signal a gas leak. This is a serious issue requiring immediate attention from a Gas Safe engineer. Gas leaks pose a severe safety risk, potentially leading to explosions. Never ignore unusual smells from your boiler.

No Hot Water or Heating

If your boiler fails to produce hot water or heat, there may be issues with the thermostat, water pressure or diverter valve. A broken thermostat typically costs £180 to replace, while a ruptured diverter valve could set you back £300-£700. These problems are inconvenient, but addressing them quickly can restore comfort to your home.

Regular maintenance is key to preventing major boiler issues. Acting on these signs promptly can save you money and ensure your home stays warm during winter.