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Independent UK planning guide

Boiler replacement costs in the UK

Replace a domestic boiler, including standard controls, flushing and commissioning.

Get site-specific quotes

Typical UK range

£2,200–£4,500

Straightforward jobs

From £1,800

Typical site time

1–3 days

Build the allowance

How to read this price

Starting allowance

For a straightforward, accessible job with a standard specification.

From £1,800

Typical UK project

An early planning range before a tradesperson inspects the property.

£2,200–£4,500

Likely programme

Site time varies with preparation, sequencing, approvals and drying periods.

1–3 days

These figures are early UK planning allowances. They are not a substitute for an itemised quotation after inspection.

Control the variables

What can change the quote?

Fuel type and required registration

Pipework route and system condition

Controls, flushing and balancing

Commissioning and certification

Before accepting a quote

Ask for these details in writing

  • Labour, materials and VAT
  • Preparation and protection
  • Access equipment and waste
  • Named provisional allowances
  • Testing and certification
  • Programme and payment stages
  • Making good and decoration
  • Warranty and snagging process

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