Replacing an outdated boiler can save you up to 30% on energy usage. We install only premium, high-performance boilers from trusted manufacturers such as Worcester Bosch and Vaillant, offering superior reliability, long term efficiency, and smart compatibility.
Every new boiler installation in Teddington is designed around your property’s specific needs, and includes:
Most like-for-like boiler replacements can be completed in one full working day, typically around 8–10 hours. More complex projects — such as converting from a regular or system boiler to a combi boiler, upgrading pipework, or relocating the boiler — will usually take longer. Following a site survey by one of our Gas Safe registered engineers near you in Teddington, we confirm the exact timescale before work begins.
A boiler replacement is usually the better long-term option if your boiler is old, inefficient, breaking down regularly, or becoming increasingly expensive to maintain. In many cases, continued repairs offer poor value compared with installing a modern, efficient boiler. Our local gas engineers near you will always assess whether repair or replacement is the most sensible and cost-effective solution for your home.
The cost of a new boiler installation near you in Teddington depends on the boiler type, existing system, and whether any upgrades are required. For realistic, like-for-like installations, typical price ranges are:
These figures reflect genuine pricing from Gas Safe registered engineers near you, rather than misleading headline “from” prices.
A typical combi boiler replacement near you includes:
Final installation costs are confirmed following a site survey at your Teddington property.
Installing a new boiler sooner can reduce running costs, improve reliability, and lower the risk of breakdowns during colder months. Modern A+++ boilers are significantly more efficient, quieter, and often come with longer manufacturer warranties. Delaying replacement can lead to higher energy bills and unexpected failures — particularly during peak winter demand.
A boiler replacement is usually the better long-term option if your boiler is old, inefficient, breaking down regularly, or becoming increasingly expensive to maintain. In many cases, continued repairs offer poor value compared with installing a modern, efficient boiler. Our local gas engineers near you will always assess whether repair or replacement is the most sensible and cost-effective solution for your home.
Converting to a combi or system boiler can free up space, remove tanks or cylinders, and significantly improve water pressure. However, conversions involve more work than a straight replacement and typically add £1,000–£1,500 on top of a like-for-like installation due to additional pipework and labour.
Typical boiler conversion costs by system type
Approximate ranges for boiler conversions carried out by local gas engineers near you in Teddington are:
System → Combi: £1,550 – £5,600 (average around £3,600)
Whether you’re upgrading a combi, system, or regular boiler or System Conversion in Teddington (converting from one type to another) our Gas Safe Registered engineers provide:
Ideal for customers wanting maximum performance or servicing older or high-demand boilers.
An A-rated boiler is a modern, high-efficiency appliance designed to minimise energy waste. An A-rated boiler installation ensures the boiler is correctly sized, installed, and commissioned by Gas Safe registered engineers near you, helping to reduce fuel bills and environmental impact.
We carry out full boiler installations, boiler replacements, system upgrades, and conversions throughout Teddington. This includes combi boiler installations, regular and system boiler replacements, control upgrades, efficiency improvements, and full commissioning. Our local gas engineers also advise on the most suitable boiler type for your property.
Yes. We specialise in combi boiler installations near you in Teddington. This includes removing the existing boiler (and cylinder if applicable), upgrading pipework where required, installing the new combi boiler, and fully testing and commissioning the system.
Yes, provided your property is suitable. A combi conversion may require upgrades to gas supply pipework, changes to water feeds, and removal of the hot water cylinder and tanks. Our Gas Safe registered engineers in Teddington assess suitability during the survey and explain the full scope of works before proceeding.
Relocating a boiler typically adds £1,000+ to the installation cost. This is because moving a boiler usually requires:
Larger properties and longer pipe runs can increase costs further.
Typical timescales are:
Exact timelines are confirmed during the survey by our local gas engineer near you.
Alongside boiler replacements, we can upgrade your entire heating setup. Our services in Teddington include:
Full central heating installations, including radiators and pipeworkSmart thermostat installations such as Hive and Nest, including multizone controlUnderfloor heating installations and repairs, including smart integrationsHigh efficiency controls and zoning to reduce energy waste and enhance comfort
Not always, but in some heating systems a powerflush may be recommended.
Over time heating systems build up sludge and corrosion debris inside radiators and pipework. This sludge is created when internal corrosion produces a black magnetic deposit called magnetite.
If this contamination enters a new boiler, it can block the heat exchanger, pressure relief valve, motorised valve or diverter valve, pump and damage multiple boiler components. Poor system water can also invalidate the manufacturer’s warranty
Boilergurus carries out a chemical system flush with every boiler installation to remove loose debris.
If the system is heavily contaminated, a powerflush may be recommended.
Learn more here:
https://boilergurus.com/what-
https://boilergurus.com/what-
In most cases existing radiators can remain when installing a new boiler.
However, that depends on:
• Radiator condition
• Sludge levels
• Whether valves are leaking
If radiators are heavily contaminated internally, they may need cleaning or replacing.
Yes. In many homes the existing heating pipework can remain when installing a new boiler.
However, pipework may sometimes need upgrading if:
• Gas pipework is undersized
• Pipes are heavily restricted with sludge
• Pipe layout is unsuitable for modern heating controls
During a boiler installation near Teddington, the pipework is assessed to ensure the system operates safely and efficiently.
No. A new boiler is simply the heat source for the heating system. It produces hot water but does not control how that heat is distributed through the radiators.
If some radiators are cold or heating unevenly, the cause is usually related to:
• Radiator balancing
• Sludge inside radiators
• Faulty radiator valves
This is a common misconception — replacing a boiler does not automatically fix distribution problems within the heating system.
Radiators may need balancing so that hot water flows evenly through the system.
You can read more here:
https://boilergurus.com/what-
Heating systems often contain sludge and corrosion debris which can damage a new boiler if left inside the system.
For this reason, a chemical system flush is normally carried out during boiler installation.
If the system is heavily contaminated a powerflush may be recommended.
Learn more here:
https://boilergurus.com/what-
https://boilergurus.com/what-
Yes. A magnetic filter is strongly recommended when installing a new boiler because it helps protect the boiler from sludge and magnetite circulating through the heating system.
Over time, radiators and steel pipework can produce a black magnetic sludge called magnetite. If this debris enters a new boiler, it can block the heat exchanger, reduce efficiency, and damage internal components such as the pump.
A magnetic filter captures this sludge before it reaches the boiler, helping to:
• Protect the heat exchanger and pump
• Improve heating system efficiency
• Reduce sludge circulation through the system
• Help maintain the manufacturer’s warranty
Magnetic filters are commonly installed alongside a chemical flush during boiler installation near Teddington to help protect the new heating system long term.
Yes, this is required for the manufacturer’s warranty, installation instructions, and Gas Safe Register regulations.
All flues must:
• Be supported every 1 metre with compliant flue brackets
• Have inspection hatches installed at flue extension joints
• Have all flue joints properly supported
A motorised valve controls the flow of hot water through the heating system, directing it to the radiators, hot water cylinder, or separate heating zones within the property.
These valves work together with thermostats and heating controls to ensure heat only goes where it is needed.
Typical signs of a faulty motorised valve include:
• Heating not coming on
• Hot water not heating
• One heating zone not working
• Heating and hot water coming on together incorrectly
Motorised valves are commonly found on:
• System boilers
• Conventional/regular boiler systems
• Zoned heating systems
A motorised valve is different from a diverter valve motor inside a combi boiler.
A motorised valve is installed externally on the heating pipework and controls heating zones and hot water circuits throughout the property.
A diverter valve motor is located inside a combi boiler and switches the boiler between heating radiators and producing hot water for taps and showers.
Learn more here:
https://boilergurus.com/what-is-a-motorised-valve-and-what-does-it-do/
https://boilergurus.com/what-is-the-difference-between-a-motorised-valve-and-a-diverter-motor-valve/
As part of boiler installation and replacement, we also provide:
Full heating system upgrades, including radiators and pipeworkInstallation of thermostats and zoning controlsUnderfloor heating installations, repairs, and smart control setup Transparent: Every job includes before & after photo evidence
All work documented in professional digital reports
Proactive: We flag any issues before they become costly
Reliable, professional, and highly rated by homeowners and landlords alike
Whether you are booking an Annual boiler service, a Premium strip-down, or a Landlord Gas Safety Certificate in Teddington, our Gas Safe Registered engineers are here to help.
Upgrade your home with a reliable, efficient, and modern heating system in Teddington from Boilergurus. Whether you’re replacing an old boiler or upgrading your full central heating system, our engineers are here to help.
We install trusted manufacturers such as Worcester Bosch, Vaillant, Baxi other leading brands that meet modern efficiency and reliability standards. Our local gas engineers near you explain the differences between models, warranties, and price points so you can make an informed decision.
Yes. All boiler installations are completed in line with current Building Regulations and Gas Safe requirements. We also notify Building Control where required and provide all relevant certification.
Yes — our combi boiler installers near Teddington service includes safe removal of your old unit, fitting of your new A-rated boiler, full system flush, and operational testing. We handle every step professionally and dispose of old units responsibly.
Absolutely. Once the the boiler is installed, we walk you through how your new boiler and controls work, explain the settings, and answer any questions so you’re confident using the system
Upgrading through our A-rated boiler installation service means lower bills, quieter operation, fewer repairs, and a smaller carbon footprint. You’ll also enjoy better heating control and peace of mind with manufacturer warranties up to 10 years.
Older properties often require safety-critical upgrades, including:
These works are not optional upsells — they are required to meet Gas Safe regulations, ensure correct boiler performance, and maintain manufacturer warranties.
Yes. All boiler installations are carried out by fully Gas Safe registered engineers near you. Every installation includes:
Parts and Labour warranty length is typically 10 to 12 years dependent on the boiler brand and model.
