The first chilly evening of autumn is when most of us flick the heating on and hope for the best. The short answer to getting your heating ready for winter in Hertfordshire and Essex is to run it for a test before you need it, check the pressure, bleed any cold radiators, set your controls and book a boiler service if it’s been more than a year. Those few steps catch most problems while there’s still time to fix them.
Why it’s worth testing the heating early
A boiler that has sat idle through the summer can behave differently once it’s asked to work every day. Pumps can stick, valves can seize and air can collect in radiators. Finding that out on a mild October afternoon is far better than discovering it on a frosty morning when engineers are at their busiest.
Turn the heating on for an hour or so, with the thermostat turned up, and walk round the house. Every radiator should get warm from top to bottom, and the boiler should fire up and run without unusual noises.
Your homeowner checklist
These are safe, simple checks anyone can do:
- Check the boiler pressure. On a sealed system, the gauge usually sits somewhere around 1 to 1.5 bar when cold. Your boiler manual gives the exact range.
- Feel each radiator. Cold at the top usually means air, and bleeding it should help.
- Check your thermostat and timer. Clocks drift, batteries run out and summer settings get left on.
- Look at the TRVs. Thermostatic radiator valves can stick after months on a low setting. Turn each one fully up and down a few times.
- Look for drips. Check under the boiler, around radiator valves and along any visible pipework.
- Clear around the flue and vents. Leaves, plants and garden furniture shouldn’t block the flue outside or any vents inside.
- Test your carbon monoxide alarm using its test button, and check the expiry date.
Jobs that need an engineer
Some things look simple but aren’t homeowner jobs. Leave these to a qualified engineer:
- Anything inside the boiler casing
- Flue repairs or adjustments
- Pressure that keeps dropping after you’ve topped it up
- Repeated lockouts or fault codes
- Radiators that are cold at the bottom, which often points to sludge
Any work on a gas boiler must be carried out by a Gas Safe registered engineer. Oil boilers should be looked after by an OFTEC registered technician. If you smell gas, leave the property and call the National Gas Emergency Service on 0800 111 999.
Why an autumn service makes sense
An annual service is the best way to spot worn parts before they fail. The engineer checks combustion, cleans components, tests safety devices and looks at the flue. It also keeps most manufacturer warranties valid. Booking in early autumn means any parts can be ordered and fitted before the weather turns properly cold.
Winter heating in Hertfordshire and Essex homes
Our area has a real mix of heating systems. Towns like Bishop’s Stortford and Sawbridgeworth are mostly on mains gas, while many villages around Saffron Walden, Dunmow and Takeley rely on oil. If you’re on oil, add two jobs to the list: check how much fuel is in the tank and give the tank and base a quick look over. Look for cracks, rust, a sinking base or oil staining. If the tank is past its best, our oil installations page covers the replacement tanks we fit.
Frequently asked questions
When should I turn my heating on for the first time?
There’s no set date, but testing it in September or early October is sensible. Run it for an hour or so with the thermostat turned up, so you know it works before you need it. If something’s wrong, you’ll have time to get it sorted before the busy winter period.
What should my boiler pressure be in winter?
Most sealed systems sit at roughly 1 to 1.5 bar when cold, rising a little when the heating is on. Check your boiler manual for the exact figures. If the pressure keeps falling after you’ve topped it up, there may be a leak or a faulty valve, which needs an engineer.
Do I need a boiler service every year?
Yes, once a year is what manufacturers recommend, and it’s usually a condition of the warranty. A service checks the boiler is burning safely and efficiently and spots worn parts early. Autumn is a good time, before the boiler is working hard every day through the winter.
Should I bleed my radiators every autumn?
Only if they need it. If a radiator is warm at the bottom and cold at the top once the heating’s on, bleeding should help. If it’s cold at the bottom or cold all over, the problem is likely sludge or a valve, and bleeding won’t fix it.
Get your heating ready for winter
If your heating’s due a check before the cold weather arrives, give us a call on 01279 771981 or drop us a message and we’ll get your boiler service booked in.