What to do When Your Boiler’s Water Pressure is Low

Finding low water pressure in your boiler can sometimes feel like a puzzle. It’s not always clear why it’s happening, but it’s a puzzle you’ll need to solve if you want to restore warmth to your home.

There are many reasons why your boiler’s water pressure may have dropped — and you’ll find all of them in this article. Read on to discover the causes of low water pressure in boilers and plan some effective steps you can take to resolve the issue.

Understanding Low Water Pressure in Your Boiler

Your boiler’s water pressure is crucial for circulating hot water through pipes and radiators, keeping your home cosy and comfortable. However, when the pressure drops too low, the system can struggle, leading to inadequate heating or, in some cases, a complete system shutdown. 

Various factors can contribute to this drop in pressure, from leaks in the system to recently bled radiators or even a natural decline over time.

Steps to Diagnose and Fix Low Water Pressure

• Check the Pressure Gauge

Start by examining the pressure gauge on your boiler. A reading below 1 bar indicates low pressure, signalling that it’s time to take action.

• Locate and Fix Leaks

Inspect your heating system for any signs of leaks. These can often be the culprit behind falling pressure levels. If you find a leak, it’s best to contact a professional for repairs.

• Repressurise Your Boiler

If there are no visible leaks, the next step is to repressurise your boiler. This can usually be done by adjusting the filling loop to allow more water into the system until the gauge reads between 1 and 1.5 bars.

• Bleed Radiators

Air trapped in your radiators can also affect your boiler’s pressure. Bleeding your radiators to release any trapped air can help restore pressure balance.

• Annual Boiler Service

Regular maintenance is key to preventing pressure issues. An annual service by a qualified engineer can keep your system running efficiently and spot potential problems before they lead to low pressure.

Advanced Troubleshooting and Professional Support

• System Reset

Sometimes, a simple reset can reinvigorate your boiler’s performance. Refer to your boiler’s manual for instructions on safely resetting the system.

• Check for System Updates

Older boilers may suffer from pressure issues more frequently. Consulting with a heating expert can provide insights into whether your system could benefit from updates or replacement parts.

• Professional Leak Detection

If leaks are suspected but not visible, a professional from PJH Co. can employ advanced leak detection techniques, ensuring that even the most elusive leaks are found and fixed.

• Water Pressure Regulator Adjustment

A professional can assess and adjust your water pressure regulator if necessary, ensuring it’s set correctly for optimal boiler operation.

For persistent issues, or if you’re unsure about performing any adjustments yourself, Consult with PJH Co. Our experienced engineers are adept at diagnosing and resolving all manner of boiler pressure problems, ensuring your system operates safely and efficiently. With our comprehensive boiler services, including maintenance, repairs and installations, we ensure your heating system is in top condition all year round.

Contact us today to schedule a service or for expert advice on managing your boiler’s water pressure.