Disclaimer
Want to make your hot air heating system more energy efficient? This guide covers what homeowners need to know about boosting energy efficiency in hot air heating systems: practical tips, maintenance advice, and upgrade options to help you save money and reduce your carbon footprint. At 0800 Homefix, we specialise in optimising heating systems to ensure they deliver maximum efficiency and comfort for your home.
If you’re seeing the Baxi E119 fault on your boiler’s display, it means your central heating system is suffering from low water pressure. This is one of the most common issues we deal with at 0800 Homefix, and fortunately, it’s usually a quick fix-if you know what to look for. The E119 fault is especially common on the Baxi combi boiler, and this guide applies specifically to this model. In this guide, we’ll cover everything from what causes low pressure to how you can fix the E119 error code on your Baxi boiler safely and efficiently.
What Does the Baxi E119 Fault Code Mean?
The E119 error code indicates that the boiler’s pressure has dropped below the minimum required level-typically under 1.0 bar. This is known as a low pressure fault, meaning the system doesn’t have enough water circulating through it, which prevents the boiler from firing up and heating your home.
You might see the message:
E119 on Baxi boiler display
Or hear the boiler trying to start but immediately shutting down
This is a built-in safety mechanism to prevent damage to internal components.
Common Signs of Baxi Boiler Low Pressure
Alongside the E119 code, look out for these symptoms:
No hot water or heating
Radiators staying cold
Gurgling or sloshing sounds in the pipes
Boiler showing a pressure gauge below 1.0 bar
Boiler display showing Baxi boiler low pressure E119
It’s important to bleed radiators regularly to remove trapped air, which helps maintain system pressure and can prevent faults like E119.
If you’ve just bled radiators or haven’t topped up your boiler for a while, you’re especially likely to run into this fault.
Causes of the Baxi E119 Error Code
At 0800 Homefix, we regularly attend callouts for Baxi boilers showing E119 faults. The usual culprits include:
Recent radiator bleeding – which lowers pressure
Small leaks in pipework or joints – often invisible
Water leakage from pipes or radiators – causing loss of system pressure
Faulty pressure relief valve – letting out too much water
Expansion vessel problems – unable to maintain pressure
Airlocks – trapping water and interrupting flow
Pressure drop and pressure changes in the system are often caused by trapped air or water leakage, leading to pressure problems that can trigger the E119 fault.
How to Fix the E119 Error Code Baxi Boiler
Here’s how to safely repressurise your Baxi boiler and clear the E119 error:
Locate the filling loop – a braided silver flexible hose usually beneath the boiler. Some Baxi combi boilers have a green lever or a Baxi Easy Filling Link (easy filling link) to increase pressure easily-these are designed for straightforward use by a qualified engineer or homeowner.
Open both valves slowly – you’ll hear water begin to fill the system.
Watch the system pressure/boiler’s pressure gauge – aim for the correct pressure of 1.0–1.5 bar for safe operation and to ensure the boiler heats water to the desired temperature.
Close the valves – once the correct pressure is reached.
Reset the boiler – the reset button is usually found on the control panel. The E119 error should now disappear.
⚠️ Warning: If you’re unsure at any point or notice water leaking from any part of the boiler, stop and call a professional.
Baxi Boiler Showing E119 Again and Again?
If the E119 fault keeps returning even after topping up the pressure, it’s likely there’s a deeper issue. If your boiler continues to lose pressure or you notice pressure drops, water leaks, visible leaks (including from end caps), or a boiler leak, these pressure problems may indicate a more serious issue:
Leaking radiators or pipework
Faulty PRV or expansion vessel
Internal seal deterioration
Slow drip from an isolation valve or joint
This is when 0800 Homefix can help. To ensure safety, a professional engineer, qualified engineer, or heating engineer-such as a Gas Safe engineer or Gas Safe registered engineer-should be consulted for professional advice. Our qualified heating engineers and professional heating engineers can diagnose and repair persistent faults. If the problem persists, seek professional advice to address underlying issues safely and effectively.
Our Expert Baxi E119 Repair Services
With 0800 Homefix, you get:
Same-day service for E119 pressure faults
Leak detection and sealing
Expansion vessel replacement
PRV and gauge diagnostics
Pressure system resets and testing
Regular maintenance of your boiler system can help prevent boiler fault codes like the E119 boiler fault and other error codes. 0800 Homefix offers comprehensive maintenance and repair services to keep your system running efficiently.
We stock parts for Baxi boilers and resolve most E119 faults on the first visit.
How to Prevent the E119 Fault in Future
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Check pressure monthly – especially in winter.
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Book an annual boiler service – to spot developing issues.
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Install a magnetic filter – to reduce corrosion and sludge buildup.
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Top up pressure after bleeding radiators – every time.
Maintaining proper pressure levels helps ensure an efficient heating system that uses less energy.
If your boiler is old or frequently develops faults, upgrading to a new boiler can be a cost-effective way to improve efficiency and reduce energy bills.
Typical Repair Costs for Baxi E119 Fault
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Pressure top-up and reset: £60–£90
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Leak detection and seal: £120–£250
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Expansion vessel replacement: £200–£300
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Pressure relief valve replacement: £100–£180
After any repair, it’s important to monitor your boiler’s pressure and performance over the next few weeks to ensure the issue is fully resolved and prevent further problems.
0800 Homefix always provides upfront pricing and cost-effective repairs.
Helpful Resources
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Baxi Official Support: https://www.baxi.co.uk
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Gas Safe Register: https://www.gassaferegister.co.uk
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UK Boiler Maintenance Advice: https://www.gov.uk
Frequently Asked Questions
What does Baxi E119 fault mean?It means your boiler has low water pressure and can’t operate until it’s topped up.
Can I fix the E119 error myself?Yes-repressurising is usually a safe DIY fix, but call a professional if the fault returns.
Is low pressure dangerous?While not immediately dangerous, it can cause boiler inefficiency, damage, or ignition failure over time.
Can my boiler have too much pressure?Yes, too much pressure or extremely high pressure in your boiler can be dangerous. If the boiler pressure rises above the recommended range, it can damage the boiler, cause leaks, or even lead to system failure. Always keep boiler pressure within the manufacturer’s guidelines.
Why does my Baxi boiler keep losing pressure?This usually points to leaks, faulty valves, or a weak expansion vessel.
How quickly can 0800 Homefix fix the issue?We offer same-day service and fix most E119 faults in under an hour.