Your oven has started playing up and the quote from the engineer feels uncomfortably close to the price of a new appliance. Before you swipe the card either way, it helps to run the numbers against a simple framework. The right answer depends on age, safety, energy label and how long you plan to stay in the property, not just the price of the part. Here is how to decide whether to repair or replace your oven without regret.
Quick answer
Repair your oven if the fault is a common wear part (element, thermostat, fan motor, door seal), the appliance is under eight years old, and the repair costs less than half the price of a comparable new model. Replace if it is over ten years old, has multiple failing parts, has a cracked enamel cavity, or shows any electrical safety issue like scorch marks or repeated RCD trips.
The 50 percent rule (and when to break it)
The classic guideline is the 50 percent rule: if a repair costs more than half the price of a like-for-like replacement, buy new. It is a good starting point, but not the whole story. Factor in the oven’s age, how long you plan to stay in the property, energy efficiency ratings, and whether the fault is likely to recur within twelve months.
A ten-year-old built-in oven with a failed fan motor is a different conversation to a three-year-old model with a snapped door hinge. The first is at the tail end of its service life; the second has years left. Modern ovens typically last 10 to 15 years with normal domestic use, so a fault at year eight or nine is often the start of a cascade rather than an isolated event.
Read also: Oven not heating up? Troubleshoot before you call
Common faults worth repairing
Not every fault is a death sentence. These issues are usually straightforward and cost-effective to fix, even on older ovens. Spare parts for major UK brands – Bosch, Neff, Zanussi, Beko, Hotpoint, AEG – are widely stocked, and most swaps take under an hour.
- Failed heating element (top or bottom) – typically £40 to £90 fitted
- Broken thermostat causing wrong temperatures – £60 to £120 fitted
- Noisy or seized fan motor – £80 to £150 fitted
- Perished door seal letting heat escape – £25 to £60 fitted
- Faulty oven light or bulb holder – under £30
- Broken door hinge on a modern oven – £40 to £100 fitted
If you have a reputable local engineer, ask for a diagnostic call-out first before authorising the work, and check whether they charge the call-out separately or absorb it into the repair. Ask for the removed part back – it is your appliance.
Signs you should replace
Some symptoms point firmly toward buying a new oven rather than throwing money at the old one. Consider replacing when you see:
- Persistent burning smells that survive a deep clean and new seal
- Enamel cavity that is chipped, rusted, or cracking
- Multiple electronic control failures on the same unit within a year
- Repeated tripping of the RCD or scorch marks around the plug
- An oven over ten years old with a major fault
- Parts no longer available from the manufacturer
Safety-related issues are non-negotiable. If a Gas Safe or qualified electrician flags a fault as unsafe, replace rather than patch – that is what insurance policies expect and what building regulations require.
Read also: How to measure for a built-in oven
Running the numbers: a quick worksheet
Grab a pen. Note the repair quote, the price of an equivalent new oven, the age of your current appliance, and its energy label. Then work through:
- Divide the repair cost by the new oven price. Over 50 percent? Lean replace.
- Add the age of the oven. Over 10 years plus a costly repair? Lean replace.
- Check the energy rating. A jump from D to A can pay back over five years, especially with electricity prices where they are.
- Consider installation. A like-for-like gas swap needs a Gas Safe engineer and a Building Regulations Compliance Certificate.
- Add disposal cost. Councils charge £20 to £40 for large appliance collection, or the retailer will remove for free with a new delivery.
If two or more indicators point to replace, that is your answer.
Read also: Best ovens to buy in 2026 (UK guide)
Common mistakes to avoid
People lose money in the same three ways when this decision goes wrong. First, paying a repair bill on an oven already past its sensible life – a £180 fan motor on a twelve-year-old oven usually buys twelve more months, not five more years. Second, replacing a perfectly good three-year-old oven because a £45 element sounds like a nuisance. Third, choosing a new oven purely on headline price and missing the running-cost difference between an A and a D-rated model.
If you rent, check the lease before spending anything. Faulty appliances supplied by the landlord are usually their responsibility to repair or replace – not yours.
When to call a professional
Diagnose before you decide. A £60 to £90 diagnostic visit from a manufacturer-approved engineer gives you a written fault code, a genuine parts quote and a professional opinion on remaining life. That is money well spent even if you go on to replace, because it stops you buying a new oven for a £30 fault you could have fixed.
Never DIY inside a gas oven. Element swaps on an electric oven are within reach for a confident DIYer, but anything involving the gas supply or high-voltage wiring is a Gas Safe or qualified electrician job.
Conclusion
Deciding whether to repair or replace your oven is really a question about age, safety, and total cost of ownership over the next five years. When the numbers say replace and you are moving to gas, book a certified installer through our gas cooker installation service in London so the new appliance is fitted safely and legally from day one.
