Check the basics first

Before calling a professional, there are a few simple checks you can carry out safely. Start by checking that your thermostat is set correctly and that the heating is switched on. Sometimes settings are accidentally changed or programmed timers may be preventing the system from operating.

Next, check the boiler pressure. Low pressure is a common cause of heating failure and is often displayed on the boiler gauge. If the pressure is below the recommended level, this may prevent the system from working properly.

Look for error codes or warning lights

Modern boilers are designed to alert you when something is wrong. If your boiler display is showing an error code or warning light, make a note of it. These indicators can help identify whether the issue is related to pressure, ignition, or another fault.

Do not attempt to reset the boiler repeatedly, as this can sometimes make the problem worse. If the system does not restart after a single reset, professional assistance is recommended.

Check for frozen condensate pipes

During very cold weather, condensate pipes can freeze, particularly if they run externally. A frozen pipe can cause the boiler to shut down as a safety measure.

If you suspect this is the issue, gently thawing the pipe using warm water can sometimes resolve the problem. Avoid using boiling water or direct heat sources. Once thawed, you may be able to reset the boiler and restore heating.

Ensure the gas supply is working

If you have a gas boiler, check that other gas appliances in your home are working. If nothing is operating, there may be an issue with the gas supply.

If you smell gas or suspect a leak, do not attempt any checks yourself. Turn off the gas at the meter if safe to do so, ventilate the area, and contact the emergency gas service immediately.

When to call a professional heating engineer

If basic checks do not restore your heating, it is time to call a qualified heating engineer. Issues such as faulty components, circulation problems, or internal boiler faults require professional diagnosis and repair.

Continuing to operate a faulty heating system can risk further damage or safety concerns, particularly during prolonged cold periods.

How to stay warm while waiting for repairs

If your heating stops working in winter, there are steps you can take to stay comfortable while waiting for repairs. Close doors to retain heat in occupied rooms, use additional blankets, and dress in warm layers.

If you have safe alternative heating sources, use them carefully and never leave them unattended. Keeping the home as warm as possible is especially important for young children, elderly residents, and those with health conditions.

Preventing future winter heating breakdowns

Many winter heating failures can be avoided with regular servicing and maintenance. Annual boiler servicing helps identify potential issues early, ensuring your system is prepared for colder months.

Routine maintenance improves efficiency, reliability, and safety, reducing the risk of unexpected breakdowns when you need heating the most.