As with other boilers, you’re aiming for a pressure of between 1 and 1.5 bars so if your boiler pressure is lower than this, you’ll need to top up the pressure. You can do this using the instructions earlier in this guide, but it’s likely you’ll need to use a filling loop as discussed in our ‘how to repressurise a Worcester boiler’ section. Other types of boiler So, what are the reasons you may need to repressurise a boiler? There are two main causes of low boiler pressure, the first of which is that you have recently bled your radiators. This allows air to escape your system, lowering the pressure. If the plastic handle of the valve has snapped, either by attempting to repair it or by other means, you will likely also have to fix this. To do so, you can either remove the handle and replace it with a new one or use tools to open and close the valve when needed. This may become quite tiring and annoying, however, so replacing your old handle is likely the more convenient of the two options.

If you need to repressurise your Worcester boiler often you have a problem that you need to get fixed. The boiler seems to be working ok otherwise but obviously just the issue of the water coming out the bottom! Yes, it is quite important that you install it correctly, with the filling loop valves being the right way around. This is due to the design making each side fit a specific part of the boiler, so getting it wrong could cause an issue or for you to do something wrong. You may need tools such as a spanner to tighten the boiler filling loop and make sure nothing can get out or leak. Afterwards, make sure everything is correct and in place and this should be completed. Similarly, bleeding your radiators can lead to a loss of boiler pressure, so it’s important to re-pressurise your boiler afterwards.

What does repressurising a boiler mean?

Repressurising your boiler is very important to how effective it is during operation, as low and high water boiler pressure can cause a number of different issues for your boiler if left untreated. If your Worcester boiler is losing pressureyou will have a leak somewhere on your heating system or the pressure relief valve is letting the water out. Unfortunately, some idiot at Worcester Bosch thought it would be a good idea to use a key to repressurise their boilers.

Open a drain-off valve on the Worcester boiler or central heating system with a hose attached and let the pressure drop. Do not open both filling loop valves fully straight away as the water pressure in the house might be too much for the boiler and cause the boiler pressure to shoot up too much. Boilers are designed to control your central heating system, funnelling water throughout your home to warm your radiators and supply hot water to your taps. They’re essential to keeping things running smoothly but can start to lose pressure over time. Repressurising a boiler involves topping up the water level in your central heating system to allow it to function properly. Low pressure will mean that your water won’t run as effectively as it should, meaning that you will be paying your heating bills for a certain standard of running efficiency that you aren’t getting. High boiler pressure could end up damaging your boiler and its system as it won’t be used to the high pressure that it is currently running at. Open both of your filling valves using their handles (you may need to use a screwdriver) to allow cold water to flood your systemYour boiler’s filling loop means that you can easily adjust your boiler pressure to get to the correct level for your boiler’s and your well-being. Is the way it is installed important? Repressurising a Worcester boiler is an easy job. It can save you from having to pay a plumber to do such an easy task. If you have to keep repressurising your Worcester boiler, you should get that problem found and fixed as soon as possible. Worcester 87161045910 CHARGING KEY / FILLING KEY ASSEMBLY 8716102872 - WORFIL. The Heatxchange are suppliers of GENUINE Worcester parts and spares. When installed by a Worcester Bosch Accredited Installer with a Greenstar System Filter. The Greenstar 1000 and Greenstar 2000 guarantee is available as standard to both Excelerate members and non-WAI's, when fitted with any brand of system filter. Terms and conditions apply. Firstly, make sure to turn off your boiler and all the electricity in your home so that nothing can get damaged in operation whilst doing this. Afterwards, insert your filling loop key after opening the hatch and place the filling loop in the correct area.