Overview of boilers in the UK
The current state of gas and oil boilers in the UK, the 2035 gas boiler phase-out timeline, and when replacing your boiler still makes sense versus switching to a heat pump.
Types of boiler
Combi, system and regular boilers explained — how each type works, which suits your home size and hot water demand, and the pros and cons of each.
New boiler costs
What a new boiler costs in the UK in 2026 including installation, typical price ranges by boiler type, and what factors affect your quote.
Boiler efficiency ratings
How boiler efficiency is measured, what A-rated means in practice, and how much you could save by upgrading from an old G-rated boiler.
Boiler vs heat pump
An honest comparison of sticking with a gas boiler versus switching to a heat pump — covering upfront cost, running costs, grants, disruption and carbon savings.
Hydrogen-ready boilers
What hydrogen-ready boilers are, whether the hydrogen grid is actually coming, and whether you should factor hydrogen into your next boiler decision.
Boiler grants & funding
Financial support available for boiler replacements and heating upgrades, including ECO4, the Warm Home Discount and local authority schemes.
Servicing & maintenance
How often to service your boiler, what a service includes, typical costs, and how regular maintenance extends boiler life and keeps your warranty valid.
Finding a Gas Safe installer
How to find a Gas Safe registered engineer, what credentials to check, and how to compare quotes from trusted boiler installers in your area.
Common boiler problems
The most common boiler faults, what error codes mean, when to repair versus replace, and how to troubleshoot issues before calling an engineer.