Winter is just around the corner, and your boiler is back to working at full capacity. During this season, boiler breakdowns tend to happen more often. Prevention is key — a malfunction can quickly mean no heating or hot water, unexpected repair costs, higher energy use, and in some cases even unsafe situations. Fortunately, many of these issues are easy to prevent. In this article, you’ll discover the most common winter boiler problems and practical tips to keep your heating system running smoothly all winter long.
Which boiler problems occur most often in winter?
Cold temperatures and frost put your boiler and pipes to the test, increasing the risk of malfunctions or breakdowns. Below you’ll find the most common winter issues, along with practical prevention tips.
Low boiler pressure
Low water pressure in your heating system is a common issue during winter. It can cause your boiler to work inefficiently or even shut down completely. Check your boiler pressure regularly — the ideal level is between 1.5 and 2 bar. If the pressure is too low, top it up via the filling loop and bleed the radiators if needed. Always follow your boiler’s manual, as the procedure can vary depending on the model.
Frost damage to pipes
During severe frost, pipes located outdoors or in unheated areas can freeze. Frozen pipes cause blockages and may shut down your boiler. You can prevent this by properly insulating the pipes with insulation sleeves. If a pipe has already frozen, thaw it carefully using a hair dryer or warm towels. Never use hot water, as this can damage the pipe.
Problems with the fan or flue outlet
Modern boilers use a fan to safely discharge exhaust gases. In winter, leaves or precipitation can block the flue outlet, causing the boiler to shut down automatically. Check regularly to ensure the outlet is free of dirt or obstructions, especially after snowfall or storms. A clear flue outlet ensures your boiler operates safely and reliably.
Sensor or thermostat issues
Thermostats and sensors regulate the temperature in your home, but in winter, fluctuating temperatures or an outdated thermostat can cause uneven heating. Make sure your thermostat is properly set, and consider upgrading to a smart thermostat for more precise control and even heat distribution. In many modern boilers, such as those from Intergas, the thermostat can easily be adjusted or replaced for a more efficient heating system.
Boiler maintenance and prevention
Prevention is better than repair. Regular maintenance is essential to keep your boiler running smoothly during the winter. HR Installatietechniek recommends scheduling a maintenance service at least once a year. During this visit, we identify and resolve early signs of wear or malfunction right away, helping you prevent breakdowns and keep your boiler running efficiently and economically.
Want to be sure of a warm and comfortable home this winter? Easily schedule a maintenance appointment or contact us for personal advice from one of our technicians.
Having a boiler issue? In the next step, you’ll find out what you can check yourself before calling a technician.
What to do when your boiler breaks down in winter
Experiencing a boiler malfunction? Unfortunately, this happens more often during the winter months. Below, you’ll find the steps you can take yourself to rule out the most common causes.
Important: safety always comes first. If you smell gas or see smoke, turn off the boiler, leave the room immediately, and contact the emergency service or your network operator.
First steps when a malfunction occurs
- Check whether the water pressure is between 1.5 and 2 bar.
- Make sure the thermostat is working properly (check the batteries and settings).
- Reset the boiler once, following the instructions in your boiler’s manual.
Is the problem still not resolved? Check out our detailed guide:
What to do when your boiler breaks down?
When should you call a technician?
Contact a technician if:
- The malfunction returns immediately after a reset.
- You suspect a gas or water leak.
- There is no hot water or heating.
- Pipes keep freezing, or the water pressure keeps dropping.
Our heating engineers are on hand quickly and professionally during the winter period, so you won’t be left in the cold for long. For emergencies, call us right away or get in touch via the contact form.
Frequently Asked Questions (FAQ)
Conclusion
Boilers have a tougher time in winter, which makes malfunctions more common. With regular maintenance, the right water pressure, properly insulated pipes, and a clear flue outlet, you can prevent most problems. Adjust your thermostat in time, and if issues persist, call a heating engineer. This way, you’ll keep your boiler safe, efficient, and reliable throughout the entire heating season.
Need help or want to schedule maintenance? Call us right now for emergencies or make an appointment through the contact form. We’ll quickly get your home warm and safe again.