Condition
Can You Sell a House With a Faulty Boiler?
Yes — you can sell a house with a faulty or old boiler. It does not legally stop a sale (you do not need a working boiler to sell your own home), but a survey will note it and a buyer may negotiate. Your options: repair or replace it for the best price and widest market, get a quote and price for it, or sell as-is to a cash buyer who factors a new boiler (typically £1,500-£3,500+) into the offer and completes in weeks.
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- £1,500-£3,500+typical new boiler cost
- Nolegal barrier to selling
- 7-28 dayscash sale as-is
Does a faulty boiler stop a sale?
No. There is no legal requirement to have a working boiler to sell your home (a gas safety certificate is a landlord obligation, not a seller’s — see gas safety certificate). A faulty or old boiler is a condition and negotiation issue, not a legal barrier. A buyer’s survey will flag it, and the buyer may factor in the cost of repair or replacement, but the sale can proceed normally.
Repair, replace, or price for it
| Option | Best when |
|---|---|
| Repair | The fault is minor and cheap to fix |
| Replace | The boiler is old/inefficient; you want top price |
| Price for it (with a quote) | Selling as-is on the open market |
| Sell to a cash buyer | You want speed and no outlay |
A new combi boiler typically costs around £1,500-£3,500+ installed, depending on the system — knowing the figure lets you control any negotiation.
Should you replace the boiler first?
Replacing makes sense if the boiler is old or inefficient and you want the widest market and best price — a new boiler with a warranty is a positive selling point and a better EPC contribution. But it is a real outlay, so weigh it against simply reflecting the cost in the price. For an inherited, tired or already-discounted property you do not intend to improve, pricing for the boiler or selling as-is is often the smarter, faster choice. A working boiler also helps viewings (a warm home shows better).
Disclosure and evidence
You should disclose a known boiler fault on the property information form, along with any heating issues. Provide what you have — service history, the boiler’s age, any recent repairs, and installation/warranty paperwork. Transparency reduces the chance of a late renegotiation when the buyer’s survey finds the fault, and protects you from a claim. A recent boiler service or quote for replacement, offered voluntarily, reassures open-market buyers.
Selling a house with a broken boiler fast
If you would rather not arrange boiler works, a cash buyer will purchase the house as-is, factor a new boiler into the offer, and complete in 7-28 days without a mortgage lender to satisfy. This suits inherited, empty or tired properties where you do not want to spend on improvements before selling. You disclose the fault, accept a price reflecting it, and gain a quick, certain sale. See selling in poor condition.
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Written & reviewed by Lisa Hayes, Founder
Lisa Hayes is the founder of Ready Steady Sell and an independent UK home-selling expert with over a decade helping homeowners weigh cash house buyers, property investors and the wider fast house-sale industry — without pressure or hidden fees. Every guide is reviewed for accuracy under our editorial standards.
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Frequently asked questions
Straight answers, no sales talk
Can you sell a house with a faulty boiler?
Yes. A faulty boiler does not legally stop a sale of your own home, though a survey will note it and a buyer may negotiate. You can repair, replace, price for it, or sell as-is to a cash buyer.
Do I need a working boiler to sell my house?
No. There is no legal requirement to have a working boiler to sell your own home. A gas safety certificate is a landlord obligation, not a seller’s.
Should I replace the boiler before selling?
Replace it if it is old or inefficient and you want the best price and widest market; otherwise get a quote and price for it, or sell as-is to a cash buyer.
How much does a new boiler cost?
Typically around £1,500-£3,500+ installed, depending on the boiler type and system. Knowing the figure helps you control any price negotiation.
Do I have to declare a faulty boiler?
You should disclose known boiler and heating faults on the property information form. Concealing them can lead to a renegotiation when the survey finds them, or a claim.
How fast can I sell with a broken boiler?
A cash buyer can complete in 7-28 days, buying as-is and factoring a new boiler into the offer.