Why quotes for the same job can differ between engineers
When two quotes for the same job land at different figures, the difference usually comes down to what is actually included rather than one engineer simply charging more for the same work. Reading the scope of each quote matters more than comparing the bottom line alone.

Where differing heating quotes usually comes from
One quote might include a magnetic filter, a scale reducer, full system flushing and smart controls as standard, while another lists only the boiler swap itself with those items as separate options. Warranty length, whether removal and disposal of the old appliance is included, and how much pipework or making-good work has been allowed for can all differ between quotes covering what looks superficially like the same job.
Who should undertake the work
- Gas appliance work must be completed by a suitably qualified Gas Safe engineer
- Oil appliance work should be completed by a suitably qualified OFTEC technician
- Jamie Crawford Heating states both Gas Safe and OFTEC registration
Things worth knowing about differing heating quotes
- Included extras such as filters or controls vary between quotes
- Warranty length and registration are worth checking as part of the total offer
- Removal and disposal of the old appliance may or may not be included
- Allowance for pipework work or making-good differs between surveys
- A lower headline figure sometimes reflects a narrower scope of work
Questions we get asked
- Should I always choose the cheapest quote?
- Only after checking it covers the same scope of work as any other quote you're comparing it against.
- What should I ask an engineer to clarify?
- Ask exactly what is included — filter, controls, disposal, warranty length and any allowance for unexpected pipework issues.
Related help pages
- Cost driversFilters and system protection: what they do and why they're specified
- Quote structureWhat should be included in a fixed heating quote
- Cost driversWhen pipework upgrades are needed and why
- Survey processWhat happens during a heating survey
- Pump diagnosticsCentral heating pump failure and pump seizure explained
- Service frequencyHow often a boiler actually needs servicing
Services that cover this
Where we deal with this
Get differing heating quotes looked at properly
Where this leaves you: Compare scope, not just totals — the cheapest figure on paper is only a fair comparison once you know what it actually includes.
Use the enquiry form to describe the appliance, fault code and what changed before the problem started.
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