Central Heating Engineers

£89 to £168.50+VAT per hour

Gas Safe and OFTEC central heating engineers. Whole-system design, repair, power flushing, smart controls, and upgrades. On site within 2 hours. No call-out fee.

On site within 2 hoursPhone answered within 20 minutesNo call-out fee1-year parts guaranteeGas Safe registeredNo work over budget without your approval

What central heating engineers handle

Central heating is more than just the boiler. It's the whole system — boiler, flue, pipework, radiators, thermostats, zone valves, pumps, and cylinders — working together. Problems can appear in any component, and the fix often involves more than one.

We handle full systems from design through install, repair, and ongoing service. For single-component work see our boiler repair or heating engineer callout pages.

Whole-system services

  • Full system design + install
  • System repairs (multi-component faults)
  • Power flushing (£350-£800 +VAT)
  • Cold radiator diagnosis + rebalance
  • System upgrades (combi conversion, zoning)
  • Smart heating control retrofits
  • Annual service + efficiency audit
  • Hot water cylinder replacement

Central heating pricing — 2026

Standard call-out and travel included. Prices exclusive of VAT. Larger jobs quoted per project after site survey.

This page

Engineer labour

£89 to £168.50

+VAT per hour

Power flushing

£350 to £800*

+VAT * site conditions

Boiler installation

from £1,800*

+VAT *

Call-out fee

FREE

Travel always included

All prices exclusive of VAT. Ranges reflect typical jobs. Final price quoted before any work begins.

* Power flushing varies with system size and contamination level; boiler installation pricing depends on existing system + any pipework upgrades, system alterations, or safety improvements required. Any additional work outside the original scope is clearly explained, separately quoted, and approved by you before it starts. No work exceeding the original budget is undertaken without your consent.

How we work

Five steps. No surprises. No pressure.

1

Call or book

Phone answered within 20 minutes. Free quote form.

2

Engineer arrives

Gas Safe engineer on site within 2 hours.

3

Free diagnosis

We check, explain, and quote a fixed price.

4

Work done

Most jobs completed first visit — common parts on the van.

5

Guaranteed

1-year parts guarantee on everything we fit.

Where we cover

We work from our Watford HQ across Hertfordshire and North London. Further afield is quoted separately.

Primary service areas

Central heating engineer FAQs

What do central heating engineers do?

Central heating engineers design, install, repair and service whole heating systems — boiler, radiators, thermostatic valves, zone controls, pumps, cylinders, pipework, and flue. We handle full system work, not just individual component repairs.

How much do central heating engineers charge?

Labour is £89 to £168.50 per hour +VAT. Most jobs are quoted as a fixed price after free on-site diagnosis. Whole-system repairs or power flushes are quoted per job.

What is a power flush?

A power flush cleans sludge and debris from your entire central heating system — radiators, pipework, and boiler. Improves heating efficiency, cures cold spots, and extends boiler life. £350 to £800 +VAT depending on system size and contamination level.

Should I upgrade my whole heating system?

Usually not necessary — most heating systems last 20+ years with regular servicing. Consider upgrading if: your boiler is over 15 years old, you have cold radiators despite a good boiler, radiators are noisy or sludgy (power flush first), or you are moving from oil to gas / system to combi.

Do you install smart heating controls?

Yes — we install and integrate smart thermostats, zone controls, and programmers (Hive, Nest, Honeywell, Tado, Heatmiser and others). Typical retrofit integrates with your existing boiler — no boiler replacement needed.

Do you cover oil central heating?

Yes — we are OFTEC registered for oil heating. See our <a href="/oil-boilers">oil boilers</a> page for oil-specific service, repair, and installation details.

How long does a whole-system install take?

A like-for-like boiler swap is typically 1 day. A full central heating install (new boiler, rads, pipework) is 3-5 days depending on house size. Power flushes are 1 day. Smart control retrofits are usually half a day.

Could the final price be more than the quoted range?

For a standard repair or service, no — the price we agree is the price you pay. For larger jobs like power flushing or whole-system installations, pricing depends on site conditions. If unforeseen work is needed (e.g. pipework found to be corroded), we explain it, quote separately, and only proceed with your approval.

Central heating system issue?

Engineer on site within 2 hours. Phone answered within 20 minutes. No call-out fee.