Combi Boiler: Installation, Repair & Servicing
Get in touchAt Boiler Services, we offer expert installation, repair, and servicing for combi boilers, ensuring efficient and reliable heating for your home.
Whether upgrading to a new energy-efficient combi boiler or needing prompt repairs, our Gas Safe registered engineers are ready to deliver professional service at competitive prices.
We provide comprehensive servicing to keep your boiler running smoothly, prevent breakdowns, and extend lifespan.
Contact us today for a free quote or to schedule a service, and enjoy the peace of mind that comes with our quality workmanship and dedicated customer care.
How Much Does It Cost To Install A Combi Boiler?
The cost to install a combi boiler typically ranges from £1,500 to £3,000, depending on factors like the boiler’s brand, size, and energy efficiency rating.
Basic installations of entry-level models can cost around £1,500 to £2,000, while premium models or installations requiring significant modifications to pipework or ventilation can cost upwards of £3,000.
Labour accounts for a portion of the total cost, and prices vary depending on your location and the job's complexity.
If you would like a more accurate cost, contact a member of our team today for a free, no-obligation quote.
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What Factors Affect The Price Of Combi Boiler Installation?
Several factors can affect the price of combi boiler installation, including:
Boiler brand and model: Premium brands tend to be more expensive.
Labour costs: Vary by region and complexity of installation.
Property type: Larger homes or those with difficult access may require additional labour.
Existing system: Upgrading from a different boiler type (e.g., system boiler) may involve extra pipework costs or heating system changes.
Flue and ventilation requirements: Additional components may increase the cost.
What Is Included In A Standard Combi Boiler Installation?
A standard combi boiler installation includes removing the old boiler, installing the new combi boiler, and making all necessary connections to the gas, water, and heating systems.
A standard combi boiler installation includes:
Old boiler removal: The existing boiler and associated pipework are disconnected and safely disposed of.
New boiler installation: The new combi boiler is installed, connecting it to the mains gas supply, water, and heating system.
Flue and ventilation installation: Ensuring the boiler has adequate ventilation to expel exhaust gases safely.
Testing and commissioning: The engineer will test gas pressure, check for leaks, and ensure the system is working efficiently.
Certification: You will receive documentation, such as a Building Regulations Compliance Certificate, to confirm the boiler meets safety standards.
What Are The Benefits Of A Combi Boiler Compared To Other Boilers?
The benefits of a combi boiler compared to other types of boilers include:
Space-saving design: Combi boilers don’t require a separate hot water cylinder or cold water storage tank, making them ideal for homes with limited space.
On-demand hot water: They provide instant hot water directly from the mains, so there’s no need to wait for a tank to heat up.
Energy efficiency: Combi boilers are highly efficient because they only heat water when needed, reducing energy waste.
Lower installation costs: Fewer components mean simpler and quicker installations, resulting in lower labour costs than systems or conventional boilers.
Reduced water pressure issues: Combi boilers generally offer better water pressure, especially in homes with fewer taps or showers being used simultaneously, as they take water directly from the mains.
Simplified maintenance: Combi boilers require less maintenance than traditional systems, as they have fewer components and no separate storage tanks.
Ideal for smaller homes: They are well-suited to properties with lower hot water demand, such as flats or small houses.
These features make combi boilers popular for many homeowners seeking efficiency, convenience, and cost-effectiveness.
How Long Does A Combi Boiler Installation Take?
Depending on the complexity of the job, installing a combi boiler can take 1 to 2 days.
A straightforward replacement may take just one day, where an existing combi boiler is swapped for a new one.
However, if additional tasks are required, such as relocating the boiler, upgrading pipework, or converting from a system to a regular boiler, the project may extend to two days or more.
What Are The Common Problems With Combi Boilers That Require Repair?
Common issues with combi boilers that require repair include:
Low water pressure: Often due to leaks or a faulty pressure relief valve.
No hot water: Caused by issues with the diverter valve or thermostat.
Boiler not turning on: This can be due to electrical faults or a malfunctioning ignition.
Strange noises: "Kettling" caused by limescale build-up in the heat exchanger.
Leaking water: A sign of broken seals or a faulty component within the boiler.
How Much Does It Cost To Repair A Combi Boiler?
Combi boiler repair costs can range from £100 to £500, depending on the nature of the problem.
Minor issues, such as fixing a leak or re-pressurising the system, might cost around £100 to £200, while more complex repairs, such as replacing the heat exchanger or pump, can cost £300 to £500.
Extensive repairs may not be cost-effective for older boilers, and replacement might be a better option.
How Can I Troubleshoot Minor Combi Boiler Issues Myself?
You can troubleshoot minor combi boiler issues by following these steps:
Check the thermostat settings: Ensure that the thermostat is set to the correct temperature and is turned on. Sometimes, simple user errors with the thermostat can cause the boiler to stop working correctly.
Reset the boiler: If your boiler has stopped working unexpectedly, look for the reset button and press it. This can often resolve minor electronic faults.
Check the pressure gauge: The boiler should be between 1 and 1.5 bar. If it’s too low, you may need to re-pressurise the system. Most boilers have a filling loop or lever that allows you to add more water to the system to top up the pressure.
Bleed the radiators: If your radiators aren’t heating up properly, trapped air may be the issue. Bleeding the radiators releases this air and can restore proper heating. A radiator key releases air from the bleed valve until water flows smoothly.
Check for error codes: Many modern combi boilers display error codes on their digital panels. Refer to your boiler’s user manual to decode these messages and determine whether the issue is something you can fix, like resetting the system or if it requires professional assistance.
Inspect the pilot light (for older boilers): If the pilot light has gone out, follow the manufacturer’s instructions to relight it. Contact a Gas Safe registered engineer if it frequently goes out or burns yellow instead of blue.
If these steps don’t resolve the issue or you notice gas smells, water leaks, or strange noises, you must call a qualified technician.
When Should I Call A Professional For Combi Boiler Repair?
If you notice any serious or persistent issues that can’t be resolved through basic troubleshooting, call a professional for combi boiler repair.
Signs to call a professional include:
There is no heating or hot water despite resetting the boiler or adjusting the thermostat.
Low pressure that won’t stabilise even after re-pressurising the system.
Unusual noises, such as banging, whistling, or gurgling, may indicate problems with airlocks, kettling, or the pump.
Water leaks around the boiler can point to faulty components like seals or valves.
Pilot light problems, such as going out frequently or burning yellow, can signal gas supply issues.
Error codes displayed on the boiler’s control panel that you don’t understand or can’t resolve.
Gas smells or carbon monoxide alarm activation, both of which require immediate emergency attention.
In these cases, it is essential to call a Gas Safe registered engineer to ensure your boiler is safely and correctly repaired.
How Often Should A Combi Boiler Be Serviced?
A combi boiler should be serviced once a year to maintain its efficiency, safety, and performance. Manufacturers recommend annual servicing, which is required to keep warranties valid.
Regular servicing helps to detect any potential issues early, such as leaks, low pressure, or worn parts, which can prevent costly breakdowns.
It also ensures the boiler runs efficiently, reducing energy consumption and lowering heating bills. Servicing also involves safety checks, such as testing for carbon monoxide leaks, ensuring proper ventilation, and checking gas pressure.
What Is Included In A Combi Boiler Service?
A combi boiler service includes a comprehensive inspection and maintenance of key components to ensure safe and efficient operation.
Visual inspection: The engineer examines the boiler for any visible damage, leaks, or signs of wear on external components, such as the seals and pipes.
Internal component check: The heat exchanger, burner, flue, and ignition system are inspected for issues like blockages, corrosion, or debris build-up and cleaned if necessary.
Gas pressure test: The engineer measures the gas pressure to ensure it meets safety standards and operates efficiently.
Flue and ventilation check: The flue is checked for blockages or leaks to ensure the boiler is safely expelling harmful gases.
Safety checks: The engineer will test for carbon monoxide leaks and confirm that the safety devices, such as the pressure relief valve, are functioning properly.
System performance tests: The boiler’s thermostat, controls, and radiator connections are tested to ensure they work correctly and deliver the right heat output.
Certification and report: After the service, the engineer provides a service report detailing the work carried out and noting any issues that may need addressing.
This thorough inspection ensures your combi boiler remains safe, energy-efficient, and compliant with manufacturer warranties.
Why Is Regular Servicing Of A Combi Boiler Important?
Regular combi boiler servicing is essential for ensuring the system's safety, efficiency, and longevity.
Safety: An annual service includes checks for gas leaks and carbon monoxide emissions, which can pose serious health risks if undetected. The engineer ensures the boiler is ventilating correctly and operating safely.
Efficiency: Regular servicing keeps the boiler running efficiently by cleaning components like the burner and heat exchanger. A well-maintained boiler uses less energy, reducing fuel consumption and heating bills.
.Prevents breakdowns: Servicing helps detect minor issues before they escalate into major, costly repairs or complete breakdowns, saving you from unexpected inconvenience and repair costs.
.Maintains warranty: Many manufacturers require annual servicing to keep the warranty valid. Failing to do so could result in you being responsible for repair or replacement costs in the event of a failure.
Regular servicing enhances safety, maintains efficiency, prevents breakdowns, and ensures compliance with warranty conditions.
How Much Does It Cost To Service A Combi Boiler?
The cost to service a combi boiler typically ranges between £60 and £120 in the UK. The exact price depends on location, the service provider, and whether additional repairs or parts are needed.
Larger companies may charge closer to the higher end of the spectrum, while independent engineers might offer lower rates.
Some companies also offer service plans, which cost around £150 to £250 per year and include annual servicing and cover for repairs.
Ensuring the engineer is Gas Safe registered is essential, as this ensures the service is conducted safely and legally.
Regular servicing keeps your boiler in optimal condition and can help you avoid costly repairs in the long run.
How Do I Choose The Right Combi Boiler For My Home?
To choose the right combi boiler for your home, consider:
Size of your home: Larger homes may require a boiler with a higher output.
Hot water demand: High hot water usage requires a more powerful combi boiler.
Energy efficiency: Look for boilers with high-efficiency ratings (ErP A-rated).
Brand reliability: Choose reputable brands known for durability and support. Consulting a Gas-safe engineer can help you determine the best option for your needs.
Consult with a Gas Safe registered engineer such as ourselves to ensure the boiler meets your home's requirements and complies with local building regulations.
Are there any government grants or incentives for upgrading A new Combi boiler?
There are currently no specific government grants for gas boilers. However, under the ECO4 scheme, low-income households may qualify for funding to replace inefficient boilers with new models.
Additionally, grants such as the Boiler Upgrade Scheme (BUS) are available, but they focus on low-carbon alternatives like heat pumps.