Monday 25 January 2016

How To Bleed Your Radiators

High fuel costs and falling external temperatures can quickly place a drain on household finances, especially when the central heating system is not working efficiently.

Radiators that feel cooler at the top than the bottom and those emitting a banging noise are tell tale signs that you've got air trapped in your system, however it only requires a simple, DIY response to put things right. 



Bleeding radiators, including our cast iron radiator range, involves opening a small valve on the radiator to release air. Here, we walk you through the simple steps to resolve the problem. 

1.     Start by turning off your central heating. 

2.     Locate the bleed valve at the top of the radiator on either the right or left side. This might be brass and hand operated on modern cast iron radiators or need a screwdriver/radiator key on modern steel units. 

3.     Open the bleed valve until water starts to bubble out. Having an old tea towel to cover the open valve will stop dirty water spraying on to your walls or dripping out on to your flooring. This water may be very hot, so be careful to avoid scalding.

4.     With a tea towel ready in one hand, use the other hand to turn the bleed valve about a half turn anticlockwise to open it. When the water starts rushing out, quickly place the tea towel over the hole from where the air is escaping. 

5.     As soon as water starts escaping, close the bleed valve as quickly as possible. 

6.     Topping up the central heating system may be necessary, as bleeding radiators can cause some loss of pressure within the central heating system. 

7.     There should be a pressure gauge for the system near to your boiler. For most domestic hot water heating systems this should read between 1.5 and 2 bar. If the pressure reading is below this level, open the valve that lets water into your central heating system until the gauge returns to the desired pressure level.


8.     Simply turn your heating back on for a warmer more efficient home.

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