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New Boiler Prices & Warranties in London & Kent

Compare new boiler prices in London and Kent for selected models from Vaillant, Worcester Bosch, Ideal, Baxi, Main and Glow-worm, with indicative installed prices and manufacturer warranty options. GX7 can help you choose a suitable boiler based on your property, hot-water demand and existing heating system.

Prices shown on this page are starting prices only. Your final written quotation will depend on the boiler model, system type, installation requirements and any additional work identified during assessment. Free first annual service (carried out by GX7 around 12 months after installation) and a wireless thermostat included with every new boiler installation.

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• Worcester Bosch Accredited 

• Vaillant Advance Installer

Compare New Boiler Prices in London & Kent by Brand

GX7 installs boilers from established UK heating manufacturers. Compare selected models, starting prices and warranty options from the brands below before requesting a tailored quotation.

Vaillant Boiler Models, Prices & Warranties

GX7 is a Vaillant Advance Installer. Warranty availability depends on the selected boiler model, installation requirements and Vaillant terms.

Vaillant ecoFIT pure

Outputs: 25 / 30 / 35kW
Suitable for: Small to medium homes
Installed from: £2350
Warranty: Up to 10 years*
Best for: Compact installations / cupboard-fit applications

Vaillant ecoTEC pro

Outputs: 24 / 28 / 30kW
Suitable for: Small to medium homes
Installed from: £2350
Warranty: Up to 10 years*
Best for: Straightforward combi replacements

Vaillant ecoTEC plus

Outputs: 25 / 30 / 35/ 40kW
Suitable for: Medium to larger homes 
Installed from: £2350
Warranty: Up to 10 years*
Best for: Higher-specification Vaillant installations

*Prices shown are indicative starting prices only. Final pricing depends on the boiler model, system type, flue and pipework requirements, controls and any additional work identified during assessment. Guarantee availability depends on the boiler model, installer eligibility, registration, installation requirements and Vaillant terms.

Worcester Bosch Boiler Models, Prices & Warranties

GX7 installs selected Worcester Bosch boilers for suitable homes across London and Kent. Compare popular models below, then request a tailored quotation based on your property, hot-water demand and installation requirements.

GX7 is a Worcester Bosch Accredited Installer. Warranty availability depends on the selected boiler model, installation requirements and Worcester Bosch terms.

Worcester Bosch Greenstar 1000

Outputs: 24 / 30kW
Suitable for: Smaller homes and straightforward combi replacements
Installed from: £1650
Warranty: 5 years*

Best for: Budget-conscious installations and compact spaces

Worcester Bosch Greenstar 4000

Outputs: 25 / 30kW combi
Suitable for: Small to medium homes
Installed from: £2500
Warranty: Up to 10 years*
Best for: Popular mid-range combi replacements

Worcester Bosch Greenstar 8000+

Outputs:30–50kW range depending on variant
Suitable for: Larger homes and higher hot-water demand
Installed from: £2650
Warranty: Up to 12 years*
Best for: Premium installations and higher-demand households

Prices shown are indicative starting prices only. Final pricing depends on the boiler model, system type, flue and pipework requirements, controls and any additional work identified during assessment.

Ideal Boiler Models, Prices & Warranties

GX7 installs selected Ideal boilers for suitable homes across London and Kent. Compare popular models below, then request a tailored quotation based on your property, hot-water demand and installation requirements.

Ideal Atlantic Combi

Outputs: 24 / 30 / 35kW
Suitable for: Small to medium homes
Installed from: £1650
Warranty: 5 years*
Best for: Straightforward, budget-focused combi replacements

Ideal Logic Max Combi2

Outputs: 24 / 30 / 35kW
Suitable for: Small to medium homes
Installed from: £2300
Warranty: 10 years*
Best for: Mid-range installations with a longer standard warranty

Ideal Vogue Max Combi

Outputs: 26 / 32 / 40kW
Suitable for: Medium to larger homes depending on output
Installed from: £2400
Warranty: Up to 10 years*
Best for: Premium Ideal installations and higher hot-water demand

Prices shown are indicative starting prices only. Final pricing depends on the boiler model, system type, flue and pipework requirements, controls and any additional work identified during assessment.

Baxi Boiler Models, Prices & Warranties

GX7 installs selected Baxi boilers for suitable homes across London and Kent. Compare popular models below, then request a tailored quotation based on your property, hot-water demand and installation requirements.

Baxi 400 Combi 2.1

Outputs: 24 / 30 / 36kW
Suitable for: Small to medium homes
Installed from: £1650
Warranty: 5 years*
Best for: Straightforward, value-focused combi replacements

Baxi 600 Combi 2

Outputs: 24 / 30 / 36kW
Suitable for: Small to medium homes
Installed from: £1850
Warranty: 7 years*
Best for: Mid-range installations with a longer warranty

Baxi 800 Combi 2

Outputs: T24 / 30 / 36kW
Suitable for: Medium homes and higher hot-water demand, depending on output
Installed from: £2350
Warranty: 10 years*

Best for: Higher-spec Baxi installations

Prices shown are indicative starting prices only. Final pricing depends on the boiler model, system type, flue and pipework requirements, controls and any additional work identified during assessment.

Glow-worm Boiler Models, Prices & Warranties

GX7 installs selected Glow-worm boilers for suitable homes across London and Kent. Compare popular models below, then request a tailored quotation based on your property, hot-water demand and installation requirements.

Glow-worm Compact Combi

Outputs: 24 / 28kW
Suitable for: Smaller homes and compact installations
Installed from: £1650
Warranty: 5 years*
Best for: Cupboard-fit and value-focused combi replacements

Glow-worm Ultimate₃ Combi

Outputs: 30 / 35kW
Suitable for:Small to medium homes
Installed from: £2000
Warranty: up to 10 years*
Best for: Mid-range combi installations with higher hot-water demand

Glow-worm Energy System

Outputs: 12 / 15 / 18 / 25 / 30kW
Suitable for: Homes using a separate hot-water cylinder
Installed from: £2300
Warranty: up to 10 years*
Best for: System-boiler replacements and homes with higher hot-water demand

Prices shown are indicative starting prices only. Final pricing depends on the boiler model, system type, flue and pipework requirements, controls and any additional work identified during assessment.

Boiler Installation Types & Starting Prices

The cost of installing a new boiler depends on whether you are replacing a like-for-like system or converting to a different type. Below are the standard installation categories GX7 provides, with indicative starting prices for labor and materials.

Combi to Combi Swaps

Combi Conversions

Boiler Relocations

Full System Installations

Replacing an existing combi boiler in the same or similar location, subject to the existing flue, pipework and installation requirements.

Converting a conventional (tank-fed), system or back boiler to a combi. Water tanks and cylinder removed where no longer needed. Price confirmed after a free survey.

Moving the boiler to a different location. Final cost depends on the new position, flue route, gas supply, condensate drainage and pipework alterations.

A new boiler with wider heating-system work where required, such as radiators, controls and associated pipework.

Installed from: £1650

From £2,500 · 5-year, from £2900 (10 year gurantee) · power flush incl.

Installed from: £2500

Quotation required

Prices shown are indicative starting prices only. Final pricing depends on the plumbing layout, property size, and any additional labour required for safety or regulation compliance.

What’s Included in a GX7 Boiler Installation

GX7 Services Ltd provides complete boiler installation packages for homeowners in London and Kent. Every installation is carried out by our own Gas Safe registered engineers, ensuring compliance with current building regulations and manufacturer specifications for your new heating system.

Gas Safe Registered Engineers

All GX7 boiler installations are performed by our qualified Gas Safe registered engineers to meet technical requirements.

Manufacturer Warranty Options

We register your new boiler with the manufacturer so you can access the available warranty period for your specific model.

Building Regulations Compliance

We notify the local authority through Gas Safe, providing you with the necessary Building Regulations compliance certificate.

System Cleaning & Protection

Each installation includes a chemical flush and the addition of central heating inhibitor to protect the internal pipework.

Controls & Flue Components

We supply the required flue components and basic heating controls needed to operate your specific boiler model correctly.

Post-Installation Commissioning

Our engineers complete the required commissioning checks and provide a demonstration of how to work your new boiler controls.

Please Note: The accessories and additional materials included in your quote depend on your property and boiler model. Premium filters or advanced smart controls are quoted as optional extras.

Boiler Prices & Warranties FAQs

Answers to common questions about new boiler pricing, installation and manufacturer warranties.

Get Your Boiler Quote

Tell us a little about your property and current heating system. GX7 will review your requirements and provide suitable boiler options with a written quotation.

Preferred boiler brand
Current boiler type
Combi
System
Regular / Heat Only
Back Boiler
Not sure
What do you need?
Replace my existing boiler
New boiler installation
System to combi conversion
Relocate my boiler
Not sure / need advice

No obligation. Final pricing is confirmed after assessment of the installation requirements.

Prefer to speak to us? Call GX7 or message us on WhatsApp.

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