When comparing boiler installation quotes, make sure you're comparing the same things. A £799 boiler-only quote vs a £1,299 fully-installed quote may actually be the same final price once the cheaper one is fully costed.
What should be included in a complete boiler installation quote
- The boiler unit (supply)
- Installation labour
- New flue and flue fittings
- Magnetic filter (Adey MagnaClean or equivalent)
- Inhibitor dosing
- Commissioning and testing
- Gas Safe certificate
- Building Regulations notification
- Manufacturer warranty registration
- Removal and disposal of old boiler
Common extras to watch out for
Smart thermostat: Not always included — ask specifically. Add £149–£250 if not included.
Magnetic filter: Sometimes quoted as an optional extra. We include it as standard.
Power flush: If required, this is an additional service typically quoted separately.
Additional pipework: If rerouting is needed, this should be itemised clearly.
Our pricing
All our quotes are all-in: boiler, installation, flue, filter, inhibitor, certificate, and disposal. Use our instant calculator for a fixed all-in price in under 2 minutes — no surprises.
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