Install summary
Combi boiler install at a glance
A short reference. The full guide with line-item costs, day-by-day process, and how to choose a Gas Safe fitter is at /installation.
Headline numbers
Like-for-like swap
£800 to £1,500
1 day
Relocation
£1,200 to £2,000
1 to 2 days
Conversion
£1,500 to £3,000
2 to 3 days
For the full breakdown including powerflush pricing, magnetic-filter recommendations, flue work, the day-by-day process, and how to vet a Gas Safe fitter, head to the full installation guide.
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