After months of enjoying warm, sunny days, there is definitely now a whisper of autumn in the air and, while we might not quite be at the momentous stage of turning the central heating on once again, it is certainly not far off.
Granted, boiler problems, heating and electrics might not be the most glamorous aspects of your home, but ensuring they are in tip-top condition will make life run so much smoother and avoid running into any nasty surprises just when you come to rely on them the most.
Rather than waiting until you fire up your central heating system this autumn to discover something is amiss, take action now. Our essential checklist lays out everything you need to do to ensure no last-minute panics lie ahead – just a warm, cosy home.
1. Carry out a trial run
The wisest thing to do, according to Michael Zohouri, founder of Pyramid Eco, ahead of the cooler seasons is to carry out a dummy run – even if the outside temperatures are still feeling rather balmy. "The easiest check is to just turn your central heating system on for 20 or 30 minutes and see if the boiler fires up properly and every radiator starts getting warm. If you hear any banging, gurgling, or whistling it should be investigated by a professional. You don’t want the test of your heating to be on the first freezing evening of the year. That’s when every heating engineer is busy with breakdowns. Finding a fault early gives you much more time to get it sorted."
Ben Rawson, heating expert at Electric Radiators Direct, agrees that this soft-launch approach is a good one. "One of the most important checks is to ensure you switch your heating on before the cold weather arrives, to make sure everything is working correctly. Running your boiler and central heating system for an hour or two now gives you the opportunity to spot any issues early, whether that's a radiator that isn't heating up properly, unusual noises from the boiler, or a fault message appearing on the display. Testing the system before temperatures drop means you'll have time to arrange repairs if needed, rather than discovering a problem on a cold day."
Michael Zohouri is the founder of Pyramid Eco, bringing over a decade of experience to the company. His expertise spans energy-efficient retrofitting projects, including insulation, solar and heat pump installations.
Ben Rawson is the Operations Director at Ignition Group, home of Electric Radiators Direct and Ecostrad. With extensive experience overseeing product quality, compliance and technical standards, Ben is a leading voice on electric heating in the UK. His background spans manufacturing processes and rigorous testing protocols, giving him a deep, practical understanding of how electric heating solutions perform in real homes and businesses.
2. Check your boiler pressure
The boiler really is the beating heart of your heating system – being aware of the signs your boiler is about to break down can help you stay one step ahead.
"Check the pressure gauge while the heating is cold," advises Michael Zohouri. "Most boilers will normally sit around 1 to 1.5 bar. If you have to constantly repressurise a boiler there’s probably a reason for it. It could be a leak or another problem."
"I would recommend homeowners check the boiler pressure before testing the boiler, as lower pressure might stop the boiler from operating or 'firing up' in the first place," adds Charanjit Mannu, a director at Elec Training. "If in doubt, check the manufacture's instructions to confirm what the pressure setting should be."
Charanjit Mannu is Director of Elec Training, a West Midlands-based electrical training provider. In his role he works across electrical training, electrical safety and installation standards
3. Assess each and every radiator
If you have radiators, as opposed to another type of heat emitter, such as underfloor heating, these are a great indicator of how your central heating system is performing.
"Switch the heating on and walk around the house checking each radiator," suggests Michael Zohouri. "If the top stays cold while the bottom gets warm, there may be trapped air and the radiator could need bleeding. A radiator that stays completely cold could be a stuck thermostatic valve or another circulation issue."
"If the radiator feels cold at the top but warm at the bottom, it usually indicates that air is trapped inside, which prevents hot water from circulating properly," picks up Ben Rawson. "To resolve this, you’ll need to bleed the radiator to release the trapped air. If the air keeps coming back, even after following this step, it could indicate a small leak or an issue with the system. In this case, you will need to call for a professional to take a closer look.
"A commonly overlooked job is cleaning your radiators," adds Ben. "Dust and dirt can build up over time and reduce heat output, which may mean your heating has to work harder to keep rooms warm. Use a soft cloth to wipe away dust and, for radiators with fins or convectors, use a long, thin brush to remove any hidden build-up."
This handy brush makes cleaning dust and debris out of radiators a doddle. Measuring 80cm long, it is also useful for getting lint out of the tumble dryer or washing machine.
4. Be on the lookout for leaks
Leaks, anywhere in your central heating system, are a major red flag and need to be dealt with before cold weather hits when preparing your home for winter.
"Take a few minutes to inspect visible pipework, radiators and the area around the boiler for signs of leaks, corrosion or damp patches," says Ben Rawson. "Even small leaks can impact the performance of your central heating system and are much easier to deal with before your heating is in constant use during winter."
"When doing your walk around the house, keep an eye out for damp around pipework and radiator valves," adds Charanjit Mannu. "At the same time, listen out for unusual noises and visually inspect any accessible external condensate pipes."
5. Review your controls and thermostats
Along with your boiler and heat sources themselves, it is important to take some time to assess your controls too.
"Test the thermostat, programmer and look for thermostatic radiator valve problems rather than assuming they still work properly after sitting unused over summer," advises Michael Zohouri. "If you use a smart thermostat, autumn is also a good time to review your schedule rather than simply switching last winter’s settings back on."
"Not all boiler problems are isolated to the boiler. Some of the external issues we see could be a broken thermostat, programmer or other non-functioning heating controls," says Charanjit Mannu. "These all could prevent a working boiler from responding. Some of the easy fixes we recommend are to make sure wireless thermostats have working batteries, ensure summer and winter daylight saving has not affected schedule settings, and check individual radiator controls as they can become unresponsive."
"If you use electric radiators, check that plugs are securely connected, cables aren't damaged, and sockets show no signs of wear or overheating," adds Ben Rawson.
6. Book a boiler service now
Having your boiler serviced is one of the most important things you can do to keep your central heating system in perfect working order – waiting until winter to find out boiler replacement is on the cards is highly unadvisable.
"If your annual service is due, I would definitely book it before the colder weather arrives," says Michael Zohouri. "Once it gets colder, everyone switches the heating back on. It’s when heating engineers are at their busiest and it can be harder to get an appointment. A service gives you the chance to catch any small problems before they become an emergency call-out in the winter."
"If your boiler hasn't been serviced within the last year, autumn is the ideal time to arrange one," agrees Ben Rawson. "An annual service can help identify wear and tear, ensure the system is operating safely and reduce the likelihood of unexpected breakdowns during the colder months."
FAQs
How long does a boiler service take?
An annual service should be something on every homeowner's to-do list ahead of colder weather – it is well worth paying for boiler service costs to save issues cropping up in the depths of winter.
The good news is that it doesn't take long either, as Michael Zohouri, founder of Pyramid Eco, explains. "It depends on the boiler, but it’s usually around 30 to 60 minutes for a proper service. The engineer needs time to carry out safety and performance checks. It can take longer though if they find a fault that needs further investigation."
While you are checking over your central heating system, make sure you also check that your carbon monoxide alarm is working and familiarise yourself with the most common signs of a carbon monoxide leak in order to keep your household safe.
