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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• 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.
*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.
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.
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.
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.
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.
No obligation. Final pricing is confirmed after assessment of the installation requirements.
Prefer to speak to us? Call GX7 or message us on WhatsApp.














