Boiler Making Noise

Boiler Making Noise – Causes and How to Stop It

Is your boiler making noise that wasn’t there before? Strange sounds like banging, whistling, or humming can be worrying. While some noises are harmless, others may signal bigger problems. In this article, we’ll explore why boilers make noise, what different sounds mean, and when to call a professional.

Common Noises Boilers Make

Each type of noise often points to a specific issue. Let’s take a closer look:

Banging or Knocking

Banging sounds, often called kettling, usually happen when limescale builds up inside the heat exchanger. This restricts water flow, causing steam bubbles that collapse noisily.

Whistling or Hissing

Whistling, sometimes called boiler whistling, can be caused by trapped air or a partially closed valve. It may also result from high water pressure or limescale.

Humming or Vibrating

Humming noises might indicate a loose component, such as a pump or fan. Vibrations can also occur if the boiler isn’t secured properly or if pipework is under strain.

Gurgling

Gurgling often points to trapped air or a frozen condensate pipe. This may restrict the flow of water and create bubbling noises.

Is a Noisy Boiler Dangerous?

While not always dangerous, unusual boiler noises should never be ignored. Left unchecked, they may lead to bigger problems like system damage, reduced efficiency, or even full breakdowns.

How to Fix a Boiler Making Noise

Depending on the noise, some simple steps may help:

• Bleed your radiators to remove trapped air.
• Check water pressure and adjust if necessary.
• Inspect for visible leaks or loose pipework.

However, if noises continue or worsen, it’s best to contact a professional heating engineer who can safely diagnose and repair the problem.

Preventing Boiler Noise

Annual servicing helps prevent most noisy issues. During a service, engineers check for limescale, worn parts, and airlocks, ensuring your boiler runs quietly and efficiently.

Plumble Can Help with Your Noisy Boiler

If your heating system is making strange noises, Plumble is here to help. Our experienced engineers work across Kent, diagnosing and repairing noisy boilers quickly and safely. Contact us today to arrange a visit and enjoy a quieter, more reliable heating system.