Emergency Heating Engineer Cost in 2026 (UK)
An emergency heating engineer typically costs £100–£180 for the first hour in 2026, with out-of-hours, weekend and bank-holiday call-outs starting around £150 before parts. Most breakdowns — a failed pump, a stuck diverter valve, a lockout on the PCB — are fixed in one visit, so the total is usually the call-out plus one or two parts. Here is what an emergency visit costs in 2026, the common repairs and their prices, and how a service plan can save you money.
2026 emergency heating engineer cost breakdown
| Item | Typical price (2026) | Notes |
|---|---|---|
| Standard call-out (first hour) | £100–£180 | Daytime, weekday |
| Out-of-hours / weekend call-out | £150–£300 | Evenings, weekends, holidays |
| Additional labour (per hour) | £60–£100 | After the first hour |
| Replace circulating pump | £250–£400 | Parts + labour |
| Replace diverter valve | £250–£450 | Common combi fault |
| Replace PCB (control board) | £300–£600 | Model-dependent |
| Fix a leak / re-pressurise system | £90–£200 | If no major part needed |
What you actually pay for
An emergency bill is usually the call-out (which includes the first hour) plus any parts and extra labour. Because most heating faults are diagnosed and fixed in a single visit, the realistic total for a typical breakdown is £150–£450. Big-ticket parts like a PCB or heat exchanger push it higher, at which point it is worth weighing repair against replacement on an older boiler.
How to keep the cost down
- Try the basics first: check the pressure gauge, the thermostat and the fuse before calling out — a re-pressurise you can do yourself is free.
- Book in-hours if it is safe to wait: a weekday daytime visit avoids the out-of-hours premium.
- Get the part price up front: ask for the parts cost before authorising, and whether a repair is worth it on an old boiler.
- Consider a service plan or cover: an annual plan spreads the cost and often includes call-outs.
Repair or replace?
If your boiler is over 10–12 years old and the emergency repair runs into several hundred pounds, a new boiler may be the better spend — modern units are more efficient and come with a long warranty. For a newer boiler, a one-off repair is almost always the cheaper route.
Emergency call-out costs at a glance — 2026
Source: BestBuilders 2026 regional cost model · 519 UK towns
Full 2026 rate card
| Item | Typical cost (2026) | Notes |
|---|---|---|
| Weekday daytime call-out (first hour) | £100–£180 | Then £60–£100 per extra hour |
| Evening call-out | £150–£250 | Unsocial-hours premium |
| Weekend or bank holiday | £180–£300 | The most expensive slot |
| Thermocouple / ignition electrode | £120–£250 fitted | Common quick fix |
| Central heating pump | £200–£350 fitted | Includes the part |
| Diverter valve (no hot water) | £180–£350 fitted | Classic combi fault |
| Fan replacement | £200–£400 fitted | |
| PCB (circuit board) | £250–£500 fitted | The repair-or-replace decision point |
| Typical all-in single-visit repair | £150–£450 | Call-out + part + labour |
Genuinely urgent vs waits-until-Monday
Call immediately: any smell of gas (0800 111 999 first — free, 24h), water pouring from the boiler or pipework, or no heating with vulnerable people in a cold house. Usually waits: a pressure drop you can top up, a radiator cold at the top (bleed it), an error code that clears on restart, or no hot water in a house with an immersion backup. Waiting for a weekday daytime slot saves £80–£150 on the identical repair.
Repair or replace? The threshold
The rule that serves homeowners best: if the boiler is over 10 years old and the repair quote passes £300–£400 — a PCB, heat exchanger or multiple parts — put the money towards a new boiler instead. A £450 PCB on a 12-year-old boiler buys you the next failure, not a fixed boiler; a £1,900–£3,200 replacement resets efficiency, parts and warranty in one go.
Avoiding the premium: checklist
- Bleed radiators and check the filling loop pressure (1–1.5 bar cold) before calling anyone.
- Photograph the error code — many engineers diagnose from it over the phone and arrive with the part.
- Ask the call-out fee, hourly rate and parts markup before booking — reputable firms answer instantly.
- An annual service (£80–£120) catches most failures before winter does.
- Out of warranty and breakdown-prone? Compare a cover plan against simply saving the premium.
Red flags
- “Condemned” verdicts with pressure to replace on the spot — always fine to get a second opinion unless it is gas-unsafe (which must be tagged and documented).
- Cash-only engineers with no Gas Safe card shown.
- Open-ended hourly rates with no cap or estimate in writing. Get quotes from vetted engineers instead.
FAQs
Get 3 Free Heating Quotes
BestBuilders matches you with up to 3 vetted heating engineers. Compare quotes for repairs and replacements — no cost, no obligation.