Worcester Bosch accredited support
Boiler installation and replacement
FirstForGas installs gas, oil, and LPG boilers across Dursley, Gloucestershire and surrounding areas, helping homeowners choose an efficient system that suits the property and the way they use it.
Why people replace their boiler
Frequent breakdowns or rising repair costs
Poor heating performance or unreliable hot water
An older boiler that is costly to run
A property change that needs a different setup
Gas boilers
Efficient gas boiler installation for town and village homes that need dependable heating and hot water.
Guarantee
Up to 10-year guarantees on selected Worcester Bosch models.
Oil boilers
Specialist replacement and installation work for off-grid properties across Dursley and the surrounding area.
Guarantee
Available with Worcester Bosch oil-fired installations.
LPG boilers
Practical LPG options for rural homes that need a reliable alternative to mains gas.
Guarantee
Advice on the appliance, controls, and the setup that best suits the property.
Why Choose an Accredited
Worcester Bosch Installer?
As accredited installers, FirstForGas can offer extended guarantees that standard installers cannot. The goal is not just swapping one box for another. It is making sure the system is sized properly, installed neatly, and set up to run efficiently.
- Advice on suitable boiler size and system type
- Removal of the old boiler where required
- Neat installation with clear commissioning checks
- Guidance on controls, running costs, and aftercare


Peace of Mind
All our engineers are Gas Safe (54544) and OFTEC (2384) registered, giving homeowners a clear basis for confidence when replacing or upgrading a heating system.
Book a Free SurveyHow the process works
Clear advice up front, tidy installation, and no guesswork afterwards.
Survey and quote
We look at the property, current system, and fuel type so the recommendation fits the home rather than forcing a one-size-fits-all option.
Installation day
The installation is completed neatly and safely, with attention to the surrounding pipework, controls, and the wider heating system.
Commissioning and handover
We test the system, explain the controls, and make sure you know what has been installed and how to get the best from it.
What helps us quote quickly
Your postcode and the current fuel type.
Whether the boiler is a like-for-like replacement or part of a wider upgrade.
Any known issues with pressure, hot water, radiators, or controls.
Local coverage
Boiler installation support across Dursley, Gloucestershire and surrounding areas.
If your current boiler is unreliable, inefficient, or no longer right for the property, we can advise on replacement options and arrange a practical next step.