Best boiler brands UK 2026: Worcester, Vaillant, Ideal
An independent look at the main UK boiler brands for 2026: reliability data, warranty conditions, real fitted prices, and why the installer matters more than the badge.
Read the guide →Why is my boiler making noises? Banging, kettling, gurgling
What banging, kettling, gurgling, humming and whistling from a boiler each mean, which you can fix yourself, and which need an engineer sooner rather than later.
Read the guide →Boiler not working: no heating or hot water? Causes and fixes
No heating, no hot water, or neither? Work out which fault you have, what you can safely check yourself, and when a Gas Safe engineer is the only fix.
Read the guide →Boiler service cost UK 2026: what you should pay
What a boiler service costs in 2026, what a proper one actually includes, how to spot a rushed job, and whether an annual cover plan beats paying as you go.
Read the guide →How to check an engineer is Gas Safe registered
Three ways to check a gas engineer is Gas Safe registered, what the ID card should show front and back, and the warning signs of someone who is not.
Read the guide →Combi vs system vs regular boiler: which is right for your home?
A plain-English comparison of combi, system and regular boilers, with the questions that actually decide which one suits your home, hot water demand and mains pressure.
Read the guide →How much does a new boiler cost in the UK? (2026 guide)
What a new boiler really costs in 2026, including the unit, installation and hidden extras, plus how to keep the quote down and what to check before you sign.
Read the guide →Boiler pressure low? How to repressurise it (step by step)
How to repressurise a boiler safely in under 10 minutes, how to find your type of filling loop, and what a pressure that keeps dropping is telling you.
Read the guide →Is boiler cover worth it? An honest look at the maths
What boiler cover costs, when it pays off and when it does not, the six exclusions that catch people out, and a simple way to run the numbers for your boiler.
Read the guide →Landlord gas safety certificate (CP12): cost and rules
Who needs a CP12, what it costs in 2026, the 28-day and 2-month rules, what an engineer checks, and the penalties for letting a property without one.
Read the guide →Signs your boiler needs replacing: 9 to watch for
Nine signs a boiler is on its way out, which ones mean act today, and a simple way to score whether yours is worth repairing or replacing.
Read the guide →What size boiler do I need? A kW guide for UK homes
How boiler kW is really decided, a sizing table by number of bathrooms and radiators, and why most boilers fitted in UK homes are bigger than they need to be.
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Boiler advice & guides
Costs, boiler types, servicing and how to choose an engineer.