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My boiler is losing pressure – what should I do?

Posted on by Rudkin & Herbert Team

repair or replace boilerIf your boiler starts to lose pressure, there’s no need to panic. Depressurised boilers are common faults which, here at Rudkin and Herbert, are commonly seen and repaired. It is important, however, that you’re able to identify the root of the problem so that it can be dealt with swiftly and safely. This article will explain why your boiler is losing pressure, and inform you of the steps you need to take to rectify the issue and prevent your boiler from suffering further damage.

Why is my boiler losing pressure and what should I do?

Ideally, the pressure gauge on your boiler should be showing between 1 and 1.5. If the needle is below this, It may indicate a problem. However, this is not always the case. To test whether a fault may have occurred, you should first attempt to repressurise your boiler. This is usually done by adding water into the filling loop, but may not always be the same for every boiler. You should refer to the instruction manual for the boiler or contact the manufacturer to check how to repressurise your boiler.

If your boiler continues to lose pressure after you have added water, this likely indicates that there is a leak somewhere in the system. Carefully investigate the area and see if you can identify any leaks coming from your boiler. If you don’t spot a leak coming from the boiler, check radiators around the house as these can also sometimes contribute to a loss of pressure.

If you’ve located a leak, it may be possible to fix this yourself. However, we recommend only fixing a leak if you know how, or else you may contribute to further damage. Most importantly, if you find a leak, switch off the boiler at the mains. This will reduce further damage to your boiler and your home. If you don’t think you can fix the boiler yourself, call a Gas Safe registered engineer as soon as possible.

If you haven’t located the leak, it’s possible that the pressure release valve is damaged or broken. The pressure release valve is a special mechanism within the boiler that removes excess water as a safety precaution when the boiler’s pressure gets too high. This excess water travels down a pipe that actually leads to the outside of your house. If the pressure release valve is broken then we strongly recommend you do not attempt to fix this yourself, as that may potentially involve opening the boiler up. Contact a gas-safe registered engineer and they will be able to assist you further.

How much will it cost and how long will it take to fix my boiler?

There are many different factors involved in calculating the cost to fix your boiler. Typically, an older boiler will usually cost more to fix due to the parts being more difficult to obtain. Also, prices will vary depending on which parts of the boiler have been damaged and therefore need to be replaced. This is why it is very important to contact a Gas Safe registered engineer, such as the professionals in our expert team at Rudkin & Herbert as soon as possible, as the water can spread if left and can further damage other parts.

At Rudkin and Herbert, we have over 20 years of experience conducting professional boiler and central heating services. We are fully equipped to handle a range of maintenance issues and also provide professional bathroom designs, plumbing and renewable energy services. For more information, contact our friendly team today.