Scope of Works
The works will include:
Isolate gas, water and electrical supplies
Drain down existing heating system as required
Remove and dispose of existing conventional boiler
Supply and install new A-rated high efficiency conventional boiler (e.g. Worcester Bosch / Vaillant / Ideal – or equivalent)
Connect to existing:
Flow and return pipework
Gas supply
Electrical supply
Reconnect to existing hot water cylinder and heating system
Install new flue (standard horizontal flue up to 1 metre)
Install new magnetic system filter
Install new system inhibitor
Fill, bleed and pressurise system
Test for gas soundness and safe operation
Full commissioning to manufacturer’s instructions
Register appliance with Gas Safe and Building Control
Issue Gas Safe certificate and Benchmark logbook
Fixed Price
Conventional Boiler Replacement (Supply & Install):
£2,395.00 + VAT
What’s Included
✔ New conventional boiler
✔ Standard flue kit (up to 1m)
✔ Magnetic filter
✔ Inhibitor chemicals
✔ Removal and disposal of old boiler
✔ Gas Safe certification
✔ Manufacturer warranty registration (typically 5–10 years, subject to brand)
What’s Not Included (Exclusions)
This fixed price assumes a standard, like-for-like installation.
The following are not included and may incur additional charges if required:
Power-flushing of the heating system
Replacement or upgrade of hot water cylinder
Replacement of radiators or pipework
Upgrading gas pipe sizing
New flue routes, vertical flues, or flues over 1m
Condensate pumps or complex condensate routing
System conversions (e.g. combi to conventional or vice versa)
Electrical upgrades or new circuits
Asbestos removal
Making good to decorations, boxing-in or cupboards
Any structural alterations or carpentry works
Online Booking Conditions
This online fixed-price quote is based on the following assumptions:
The existing boiler is a conventional (heat-only) boiler
The new boiler is installed in the same location
Existing pipework, flue route and gas supply are compliant and serviceable
No major system faults are present
If, upon attendance, the installation is found to be non-standard or outside the scope, we will advise of any additional costs before proceeding with works.
No work will continue without client approval.
Access & Preparation
The client must ensure:
Clear and safe access to the boiler location
Gas meter and stop taps are accessible
Electricity is available on site
Hot water cylinder and airing cupboard are accessible
Payment Terms (Online)
Full payment required at time of booking
Booking confirms acceptance of this quotation and terms
Installation date confirmed upon payment
Important Notes
This is a fixed price for standard installations only
Any non-standard works will be quoted separately
Manufacturer warranty is subject to system condition and compliance
In some cases, a powerflush may be required to maintain warranty
All works carried out in accordance with Gas Safe regulations
Optional Online Add-Ons
You can bolt these onto your checkout:
Powerflush: £550 + VAT
Smart Thermostat (Hive/Nest/Tado): from £220 + VAT
Hot Water Cylinder Replacement: from £850 + VAT
Vertical Flue Upgrade: from £250 + VAT
