
Boiler Repair or Replacement? How to Decide in Selsey
Not sure whether to repair or replace your boiler? Here is how to decide, from a Selsey heating engineer with 27 years of experience.
When a Repair Makes Sense
If your boiler is under 10 years old and the repair is minor (such as replacing a pressure relief valve or a thermistor), repairing is usually the right choice. A simple repair by a Gas Safe engineer typically costs between £100 and £150 plus parts.
If your boiler is still under warranty, the repair may even be covered. Check your warranty terms or contact us to find out.
When Replacement Is the Better Investment
If your boiler is over 10 years old, frequently breaks down, or needs a major repair like a new heat exchanger, replacement is usually more cost-effective. A new Worcester Bosch boiler with a 12-year guarantee will give you peace of mind and lower energy bills.
As a rough rule: if the repair cost is more than half the cost of a new boiler, or your boiler is over 12 years old, replacement is the better choice.
The Hidden Cost of Old Boilers
Older boilers are significantly less efficient. A 15-year-old boiler may be only 65% efficient, meaning 35p of every pound you spend on gas is wasted. A new A-rated Worcester Bosch boiler is over 90% efficient, which can save you hundreds of pounds per year on energy bills.
When you factor in the savings on energy bills and the reduced risk of breakdowns, a new boiler often pays for itself within 5-7 years.
Get Expert Advice in Selsey
Still not sure? Send us a message on WhatsApp with your boiler make, model, and the issue you are experiencing. We will give you honest advice on whether a repair or replacement is the best option for your home and budget.
Related Services
Frequently Asked Questions
Need a Boiler Quote in Selsey?
Send us photos on WhatsApp and get a fixed price in minutes.
Get Fixed Price on WhatsAppRelated Articles
Why Does My Boiler Keep Losing Pressure in Selsey?
A boiler that keeps losing pressure is a common problem in Selsey homes. Here are the most likely causes and what you should do.
Read More Boiler InstallationHow Much Does a Boiler Installation Cost in Selsey in 2026?
A complete guide to boiler installation costs in Selsey and the Manhood Peninsula for 2026. Learn what affects pricing and how to get a fixed quote.
Read More Boiler Installation7 Signs You Need a New Boiler in Your Selsey Home
From rising energy bills to strange noises, here are the top warning signs your boiler needs replacing.
Read MoreGet a Fixed Boiler Quote in Minutes
The fastest way to get a price. Send 4 quick photos and skip the home visits.
Please include photos of:
- ✅ Current Boiler
- ✅ Pipework underneath
- ✅ Flue (outside if possible)
- ✅ Gas meter


