As summer draws to a close and the temperature begins to drop across the North East, most of us start thinking about turning the heating back on.
But there’s one question worth asking before the first properly cold morning arrives:
Is your boiler actually ready for winter?
Your boiler may have spent much of the summer doing relatively little compared with the demands placed on it during winter. Once temperatures fall, it can suddenly be expected to provide heating and hot water every day.
That’s why early autumn is a great time to give your heating system a simple health check.
The Energy Saving Trust recommends checking that your boiler and heating are working before temperatures fall and considering a boiler service if you haven’t already had one during the year.
Here are seven checks you can make now that could help identify a problem before you really need your heating.
1. Turn Your Heating On Before You Actually Need It
It sounds obvious, but this is probably the most important check on the list.
Don’t wait until you’re freezing.
Turn your central heating on and allow it to run properly. Check that the boiler fires up as expected and that your radiators begin getting warm.
Walk around the property and check each radiator.
You’re looking for things such as:
- Radiators that remain completely cold
- Radiators taking significantly longer to heat than others
- Cold areas across a radiator
- Unusual noises from the boiler or heating system
- Heating that switches off unexpectedly
- Error or fault codes appearing on the boiler
A short test now gives you time to investigate a problem rather than discovering it when the heating becomes essential.
The Energy Saving Trust similarly recommends switching the heating on before winter if it has been off during summer to make sure there aren’t any problems.
2. Check Your Boiler Pressure
If you have a sealed central heating system, take a look at the pressure gauge or digital pressure reading on your boiler.
The correct pressure varies between appliances, so always refer to your boiler manufacturer’s instructions.
As general guidance, many domestic boilers operate at around 1 to 1.5 bar when the system is cold.
If the pressure is unusually low, your heating may not operate correctly.
A one-off pressure adjustment isn’t necessarily a sign of a serious problem. However, if you’re regularly having to top the pressure back up, it’s worth having the system investigated.
Repeated pressure loss can indicate an underlying issue rather than something that should simply be continually topped up.
Likewise, unusually high pressure should be investigated rather than ignored.
If you’re unsure how to repressurise your particular boiler, don’t guess. Check the manufacturer’s instructions or ask a heating engineer.
3. Check How Your Radiators Are Heating
Once the heating has been running for a while, check your radiators throughout the house.
They don’t necessarily all need to feel identical, but obvious cold areas can tell us something isn’t quite right.
For example, a radiator that’s cold towards the top can indicate trapped air and may need bleeding.
Other patterns of uneven heating can point towards different issues within the heating system, which may require professional investigation.
Also check that thermostatic radiator valves (TRVs) move freely and that radiators aren’t being blocked unnecessarily by large furniture.
Heating controls and TRVs can help control how and when different areas of your home are heated.
If you’ve bled your radiators, remember that the boiler pressure may need checking afterwards.
4. Listen to Your Boiler
You know your home better than anyone.
If your boiler suddenly sounds different, don’t automatically ignore it.
Some noise during operation is completely normal. However, new or excessive:
Banging, knocking, gurgling, whistling or vibrating
can be worth investigating, particularly when accompanied by poor heating performance, pressure problems or fault codes.
The important word here is new.
If your boiler has started behaving differently from normal, it can be an early indication that something within the boiler or wider heating system requires attention.
Finding the cause before winter is generally much more convenient than waiting until it develops into a loss of heating or hot water.
5. Test Your Heating Controls
Sometimes what appears to be a boiler problem is actually a control problem.
Before winter, check your:
- Room thermostat
- Programmer or timer
- Smart thermostat
- Thermostatic radiator valves
- Heating schedules
Make sure the time and programmed heating periods are correct and that the boiler responds when you request heat.
If you use a smart thermostat, it’s also worth checking the app, batteries where applicable and connection to the heating system.
Correctly configured heating controls can also prevent unnecessary energy use by heating your property when you actually need it. The Energy Saving Trust advises setting the room thermostat to the lowest comfortable temperature for your needs, typically between 18°C and 21°C for most people.
And turning the thermostat up higher doesn’t make the house warm up faster.
6. Look for Leaks or Signs Something Has Changed
Take a few minutes to visually inspect the areas you can safely see around your boiler, radiators and heating pipework.
You’re looking for anything that wasn’t there previously, such as:
- Water around the boiler
- Damp patches
- Drips from visible pipework
- Corrosion
- Water around radiator valves
- Unexplained pressure loss
Even a relatively small leak shouldn’t simply be ignored.
And if boiler pressure suddenly drops significantly, the Energy Saving Trust advises that this could indicate a leak within the radiator or underfloor heating system and recommends having the system inspected.
Don’t remove the boiler casing or attempt to investigate internal gas components yourself.
Gas boiler work should be carried out by an appropriately qualified Gas Safe registered engineer.
7. Check When Your Boiler Was Last Serviced
Finally, ask yourself:
When was the boiler actually last serviced?
If you can’t remember, it’s probably worth checking your records.
An annual boiler service isn’t simply about waiting for something to go wrong.
A service gives an engineer the opportunity to inspect the boiler, check its safe operation, assess its condition and identify issues that may be developing.
The Energy Saving Trust recommends having a gas boiler serviced annually by a Gas Safe registered engineer and notes that annual servicing may also be required to maintain some manufacturer warranties.
Having this done before the busiest part of winter also means any problems identified can potentially be dealt with before you’re relying heavily on the heating every day.
What Are the Warning Signs Your Boiler May Need Attention?
Not every boiler issue results in an immediate breakdown.
We’d recommend arranging professional investigation if you’re experiencing things such as:
- Boiler repeatedly losing pressure
- Heating or hot water cutting out
- Unexplained fault codes
- Unusual noises
- Radiators failing to heat correctly
- Leaks around the boiler or heating system
- Boiler repeatedly requiring resetting
- Heating controls not communicating correctly
- A noticeable change in how the system performs
These symptoms don’t automatically mean you need a new boiler.
In many cases, the first step is simply proper fault finding and diagnosis to establish what’s actually causing the problem.
That’s why at Dynamic Heating we prefer to diagnose the fault properly before recommending unnecessary replacement work.
Don’t Wait for the First Freezing Morning
Your heating system is easy to forget about during summer.
Then suddenly autumn arrives, temperatures fall and your boiler goes from relatively light use to becoming one of the hardest-working appliances in your home.
A few simple checks now can give you confidence that everything is operating as expected.
And if something doesn’t seem right, you’ve got an opportunity to deal with it before you’re without heating on a cold winter morning.
At Dynamic Heating, we provide boiler servicing, fault finding, repairs and heating system support for homeowners across Whitley Bay, North Tyneside and the surrounding North East.
Why We Love Being a Plumbing & Heating Company on the North East Coast
Whether you simply want your boiler serviced ahead of winter or you’ve noticed something that doesn’t seem quite right, our approach is straightforward:
Proper diagnosis. Clear advice. Quality workmanship.
Get in touch with the Dynamic Heating team and we’ll be happy to help get your home ready for the colder months.
FAQs
Should I service my boiler before winter?
If your boiler hasn’t received its annual service, early autumn can be a sensible time to arrange one. It allows the boiler to be checked before the period when you’ll typically rely on your heating most heavily. Annual servicing by a Gas Safe registered engineer is recommended for gas boilers.
What pressure should my boiler be?
This depends on the boiler, so check the manufacturer’s instructions. As general guidance, many domestic systems are normally around 1–1.5 bar when cold. Regular pressure loss should be investigated rather than continually topping the boiler up.
Why is the top of my radiator cold?
A cold area at the top of a radiator commonly indicates trapped air. Bleeding the radiator may help, although you should check the boiler pressure afterwards. If radiators continue to heat unevenly, further investigation may be required.
Should I leave my heating on all day in winter?
For homes with a boiler, keeping the heating running constantly generally uses more energy than heating the property when required. Using your programmer and thermostat allows you to control when your home is heated.
Can I repair my own gas boiler?
You can perform normal user checks described by the boiler manufacturer, but work involving the gas appliance itself should be left to a suitably qualified Gas Safe registered engineer.