Is your radiator feeling colder at the top than the bottom? Before you reach for the phone to call an expensive heating engineer, there's a remarkably simple solution that could have your radiator pumping out heat again in minutes - and save you up to £150 in call-out charges.
The Secret Most Homeowners Miss
When radiators develop cold spots, particularly at the top while the bottom remains warm, it's almost always caused by trapped air in the system. This common issue prevents hot water from circulating properly, leaving you shivering and contemplating costly professional help.
Your Step-by-Step Guide to Radiator Revival
What You'll Need:
- A radiator key (available for less than £2 at any hardware store)
- A small cloth or towel
- A container to catch any drips
The Simple Process:
- Turn your heating system off completely and wait for radiators to cool
- Locate the radiator valve - it's usually a small square nut at the top of your radiator
- Place your cloth and container beneath the valve to catch any water
- Insert your radiator key and turn it slowly anti-clockwise
- Listen for the hissing sound - this is the trapped air escaping
- Close the valve quickly once water begins to trickle out consistently
- Check your boiler pressure and top up if necessary
Why This Simple Trick Works Wonders
Trapped air creates pockets that block the flow of hot water through your radiator. By bleeding the system, you're allowing water to circulate freely again, restoring full heating capacity. It's the equivalent of burping your central heating system!
When to Call the Professionals
While bleeding radiators solves most cold spot issues, persistent problems might indicate deeper issues. If multiple radiators remain cold after bleeding, or if your boiler pressure keeps dropping, it might be time to consult a Gas Safe registered engineer.
Remember: Regular radiator maintenance not only keeps you warm but also improves your system's efficiency, potentially saving you money on energy bills throughout the winter months.
