Maintaining the correct pressure in your boiler is essential for its efficient and safe operation. If you notice that the pressure gauge on your boiler is indicating low pressure, it’s important to repressurise it promptly to avoid potential damage. Here’s a step-by-step guide on how to repressurise your boiler:

Step 1: Turn Off the Boiler

Before attempting to repressurise your boiler, ensure that it is switched off and completely cool to avoid any risk of burns or injuries.

Step 2: Locate the Filling Loop

Most modern boilers are equipped with a filling loop, which is a flexible hose that connects the cold-water mains to the boiler. The filling loop is usually located underneath the boiler or nearby.

Step 3: Open the Filling Loop Valves

Using a flathead screwdriver or a wrench, carefully open both valves on the filling loop by turning them anti-clockwise. This will allow cold water from the mains to enter the boiler system.

Step 4: Monitor the Pressure Gauge

Once the filling loop valves are open, watch the pressure gauge on your boiler. The ideal pressure range is typically between 1 and 1.5 bar but refer to your boiler’s manual for specific pressure recommendations.

Step 5: Repressurise the Boiler

Slowly open one of the filling loop valves until the pressure gauge reaches the desired level. Be careful not to over pressurise the boiler, as this can cause damage to the system.

Step 6: Close the Filling Loop Valves

Once the pressure gauge reaches the correct level, close both valves on the filling loop by turning them clockwise with a screwdriver or wrench.

Step 7: Check for Leaks

After re-pressurising the boiler, check for any leaks around the filling loop valves or other connections. If you notice any leaks, tighten the connections or seek professional assistance if necessary.

Step 8: Turn On the Boiler

Once the boiler is repressurized and checked for leaks, you can safely turn it back on and resume normal operation.

Conclusion

Repressurising your boiler is a simple procedure that can be done quickly and safely with the right tools and knowledge but if you run into difficulties or are not confident about represurisung your boiler get in touch and our expert engineers will be glad to help.