Boiler Service Cost & Choosing a Plumber
What things should cost, and how to pick a firm that won't make it worse.
What a boiler service should cost
Between £70 and £120 across the UK for a standard domestic gas boiler, with London at the upper end and Greater Manchester nearer the lower. Ours is £89, fixed. If someone quotes £45, ask what is included, a genuine service requires a calibrated flue gas analyser and takes the better part of an hour, and neither of those is free to the firm doing it.
A service and a safety certificate are not the same thing
This is the most expensive misunderstanding in domestic plumbing. A CP12 safety check confirms the appliance is safe right now. A service cleans the burner and heat exchanger, checks seals and combustion, and is what actually extends the boiler's life and keeps the manufacturer warranty valid. Many people pay for the certificate believing they bought the service, and find out when a warranty claim is refused.
What legitimately changes a price, and what should not
Access, parts and time legitimately change it. A pipe under a solid floor genuinely costs more than one under a sink. What should not change it is the hour of the day: a firm charging a night premium is making a pricing choice, not covering a cost. And a price that moves after work has started, without a new decision from you, is the mechanic behind almost every horror story.
The four questions that protect you
Is there a call-out fee? Is that price fixed or an estimate? Does it include parts? Will I have it in writing before work starts? A reputable firm answers all four without hesitating, on the phone, before sending anyone. If the answer to the last one is no, keep dialling, that single question filters out most of the bad outcomes.
Check the register, not the logo
Anyone can put a Gas Safe logo on a van. The register at gassaferegister.co.uk takes thirty seconds and shows the individual engineer's licence and the specific appliance categories they hold. Match the card they carry on the doorstep to the register entry. A professional expects you to ask and is not remotely offended by it.
Typical UK call-out fees and hourly rates, what legitimately moves them, and the questions that stop you being overcharged at 2am.
What "emergency response" really means, and the honest ranges for London and Manchester.
The five checks that separate a professional from a phone number on a lamppost.
Real 2026 prices, what changes them, and the things a certificate is not.
Seven tools that handle most small plumbing jobs, and the ones to leave to the trade.
What you can safely do yourself, what is false economy, and what is actually illegal.
What the job involves, what to expect from a good one, and the questions worth asking at the door.
How much is a boiler service?
Is a boiler service worth it?
How much does an emergency plumber cost?
How do I know if a plumber is overcharging?
Water where it
shouldn't be? Call.
A person answers, not a menu. You'll have an arrival time and a price range before you hang up.
020 3674 8514Or WhatsApp 07865 292684, photos help us bring the right parts
