One fixed price for the whole job — not the hours

Combi Boiler Replacement Fair Price

Typical trade: gas engineer. Move the sliders and answer the questions.

Describe the job or snap a photo — AI fills in the sizes

Type of swap
Boiler level
Power flush the system?

Fair fixed price for the whole job

£1,780

Fair range: £1,566 – £2,100

9 radiators

Realistic time on site

1.2 days

Crew / total hours

1 · 9.0 h

Labour (9.0 h × £40)
£360
Materials
£1,370
Disposal of old boiler
£50

Over £2,626? Ask why in writing.

  • Not registered (Gas Safe or local equivalent)
  • Warranty not registered in your name

Insist on

  • One written fixed price for the full scope — no open-ended hours.
  • Deposit of 10–20% at most; balance after you inspect the work.
  • Any extra work agreed and priced in writing before it starts.
  • A straight combi swap is a one-day job; conversions take 2–3 days.

Estimate for an experienced, insured tradesperson. Local prices vary — adjust the hourly rate for your area.

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