Glasgow Gas Engineers

Some common signs that you may need your boiler repaired.

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A boiler plays a crucial role in your home by supplying heat and hot water whenever you require it. However, similar to other appliances, it may encounter issues as time goes on. Identifying the early warning signs of boiler problems can assist you in preventing expensive repairs and keeping your home comfortable and secure. Below are the main indicators that suggest it might be time to reach out to a professional for boiler repairs.

Heating or Hot Water Issues

• No heat or hot water at all
• Inconsistent temperature or pressure
• Water takes longer than usual to heat

Unusual Noises

Banging, whistling, or gurgling sounds could mean:
• Air in the system
• Kettling (limescale build-up)
• faulty pump

Leaks or Drips

• Water pooling around the boiler indicates a leak
• Could be due to a broken internal part or corrosion

Error Codes or Warning Lights

• Many modern boilers display a fault code or flashing warning light
• Refer to the user manual or look up the code online.

Boiler repair blog

Low Boiler Pressure

• Your pressure gauge should usually be around 1 to 1.5 bar
• If it’s too low, it could be due to a leak or pressure relief valve issue

Radiators Not Heating Properly

• Cold spots or radiators that don’t heat at all may mean air in the system, sludge build-up, or pump problems.

Boiler repair blog

Unusual Increase in Energy Bills

• An inefficient or malfunctioning boiler can consume more fuel

Boiler Keeps Turning Off (Short-Cycling)

• Can be caused by thermostat problems, water pressure issues, or pump failure

You Smell Gas or Burning

• This is an emergency. Turn off the boiler and call a Gas Safe registered engineer immediately.

What to Do If You Notice These Signs:

• Check the boiler pressure and reset it (if safe to do so)
• Bleed radiators if they’re not heating fully
• Call a qualified heating engineer for diagnosis and repair

If you’re unsure or don’t feel comfortable troubleshooting, it’s best to book a service – contact us today.

If you have any questions contact Glasgow Gas Engineers today!

POSTED: 13/06/25