The short answer
If your boiler is working, serviced and not ancient, you probably don't need to replace it before selling. If it's broken, very old, or likely to be flagged by a surveyor, replacing it – or at least getting it serviced and documented – can make the sale smoother.
What buyers and surveyors look at
Buyers often use an old boiler as a negotiating point, asking for a price reduction to cover replacement. See boiler paperwork explained.
- Age and condition of the boiler
- Service history
- Gas Safe installation certificates
- Building Regulations compliance
- Warranty status
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When a new boiler makes sense
A new boiler with a transferable warranty can be a selling point.
- The boiler has failed
- It's over 15 years old and unreliable
- Your survey is likely to flag it
- You want to avoid renegotiation
Costs vs benefits
A new boiler costs £2,000–£4,500. It may not add that amount to your price, but it can help secure a sale and avoid reductions. See the cost to replace a gas boiler and how long gas boilers last. Get quotes from local boiler installers.
