British Gas Expert: Fix Radiator Cold Spots with a 97p Tool
Fix cold radiators with a 97p tool, says British Gas

An energy expert from British Gas has shared a simple and cost-effective method to tackle a common winter heating woe: cold spots in your radiators. The solution involves a tool that can be purchased for as little as 97 pence.

How to Identify a Radiator Needing Bleeding

According to Peter Knowles, a technical repair engineer at British Gas, there are clear signs that your radiator needs attention. You likely need to bleed your radiator if it has cold spots, particularly at the top, makes gurgling noises, or heats up more slowly than others. This is typically caused by trapped air inside the system, which prevents hot water from circulating properly.

The Essential 97p Tool and Safety First

The only specialised equipment required is a radiator key, available from retailers like Screwfix for around 97p. Before starting, Peter Knowles emphasises crucial safety steps. You must turn your heating system off completely and allow the radiator to cool down to avoid the risk of being scalded by hot water. It is also wise to have an old towel and a small container ready to catch any water that escapes during the process.

Step-by-Step Guide to Bleeding Your Radiator

Once prepared, locate the small bleed valve on the side of the radiator. Insert the key and turn it anti-clockwise, but only slightly. "Open it only a little until you hear a hissing sound – this is the trapped air escaping," advises Knowles. When the hissing stops and a steady trickle of water appears, quickly tighten the valve clockwise to close it. It is vital not to open the valve too far, as this can cause a significant drop in your boiler's pressure. Repeat the process on any other radiators showing similar symptoms.

If the problem persists after bleeding, there may be a more complex issue with your central heating system. In such cases, British Gas recommends contacting a Gas Safe registered engineer for a professional assessment.

This practical advice comes at a time when households are facing increased energy costs. The price cap has recently risen, meaning a typical household paying by direct debit now faces an annual bill of around £1,758 for gas and electricity. Efficient heating is therefore more important than ever for managing expenses.

In a separate energy-saving tip, British Gas smart energy engineer Jessica Rawstron suggested making the most of residual heat from your oven. "Once dinner comes out of the oven, we all close the door again. But why waste that heat? Leave the oven door open and let the heat transfer slowly into your kitchen," she said, while cautioning to keep children and pets safely away.