Combi boiler
Heats water on demand, straight from the mains. No hot water cylinder, no tanks in the loft.
Best for: Flats and most 1 to 3 bedroom homes with one bathroom, or two with a larger model.
Read more →Boiler replacement · Croydon
Boiler replacement in Croydon
Old boiler on its last legs, or already given up? We replace combi, system and regular boilers across Croydon, and leave you with a cleaner, more efficient system than the one we found.
Gas Safe registeredNo. 567789Free quote · 1 of 20 Saved
Prefer to talk? Call 020 3856 8293
- Gas Safe No. 567789Check us on the register
- Fixed written quoteThe price you agree is the price
- Building Regs notifiedCertificate posted to you
- Warranty registeredWith the manufacturer, for you
Replacing, not just swapping
A new boiler on an old system needs some care
The boiler is the part everyone sees, but it sits on a system of pipes and radiators that may be decades old. Fitting a brand-new boiler onto sludgy, untreated water is the fastest way to shorten its life, and manufacturers know it: most won’t honour a warranty unless the system has been cleaned and treated.
So a replacement starts with what you have. We look at the type of boiler, where it sits, how the flue leaves the house and the state of the system, then recommend the right replacement. In many Croydon homes that’s a straight swap. In others it’s a chance to get rid of the tanks, move the boiler out of a bedroom cupboard, or upgrade the controls.
Which boiler?
Which replacement boiler?
Usually the same type you have now, unless there’s a good reason to change.
System boiler
Heats a hot water cylinder, usually in an airing cupboard. Mains-fed, so no loft tanks.
Best for: Bigger homes with two or more bathrooms in use at the same time.
Read more →Regular boiler
Also called heat-only or conventional. A cylinder plus cold water tanks in the loft.
Best for: Older homes with low mains pressure, or where the pipework is built around it.
Read more →Why people replace
The most common reasons we replace a boiler in Croydon
It has broken down for good
A failed heat exchanger or an obsolete part can make repair uneconomical. Tell us it’s urgent and we’ll prioritise.
It’s old and unreliable
Boilers from the early 2000s and before are far less efficient than a modern condensing boiler and get harder to fix.
Bills are too high
A new A-rated boiler with good controls uses less gas to do the same job.
Renovating
A new kitchen, loft conversion or extension is the ideal time to move or upgrade the boiler.
What’s included
Every replacement, done to the regulations
Old boiler removed
Disconnected safely, taken away and disposed of properly, along with any old tanks or cylinder we take out.
System cleaned
Old radiators are full of sludge that kills new boilers. The system is flushed and dosed with inhibitor, as the regulations and every manufacturer require.
Magnetic filter
Fitted under the boiler to catch the sludge and rust that circulate in older systems, before it reaches the heat exchanger.
Controls that meet Boiler Plus
Every new gas boiler in England needs time and temperature controls, and a combi needs an extra energy-saving measure such as a smart thermostat with optimisation.
New flue, fitted to the rules
Flue position is tightly regulated near windows, doors, boundaries and under eaves. We check it, and fit a new flue kit with the boiler.
Frost-proof condensate pipe
Condensing boilers drain water through a small pipe. Run outside, it can freeze and shut the boiler down in a cold snap, so we route and size it to avoid that.
Benchmark checklist
The commissioning record for your boiler, filled in and signed. Manufacturers ask for it before honouring a warranty claim.
Building Regulations certificate
Fitting a boiler is notifiable work. We notify Building Control through the Gas Safe Register, and you get a compliance certificate in the post.
Warranty registered
Most manufacturers need registering within 30 days of fitting or the warranty is shorter. We do it for you, in your name.
How it works
How a replacement works
- 1
Tell us about your boiler
Two minutes in the quote form: what you have, where it is, how big your home is. Add a photo of the boiler and the flue if you can.
- 2
Get a fixed price
A Gas Safe engineer reviews it and calls you with a written quote and a recommendation. If anything needs checking, we pop round first.
- 3
Installation day
We protect the floors, take the old boiler out, fit and commission the new one, clean the system and show you the controls.
- 4
Paperwork sorted
We register the warranty with the manufacturer and notify Building Control through the Gas Safe Register. Your certificate arrives by post.
FAQ
Boiler replacement questions
My boiler has broken down. Should I repair or replace it?
If it’s under about ten years old and the fault is a common part, a repair usually makes sense. If it’s older, has needed several repairs, or the part is obsolete, the repair money is usually better put towards a new boiler. We’ll give you both options honestly.
How quickly can you replace a broken boiler?
It depends on the boiler and what we have on the books that week. Tell us in the quote form that it’s broken down and you need it urgently, and we’ll tell you the earliest date when we call.
Do I have to change to a combi?
No. If you have a system or regular boiler and it suits your home, replacing it with the same type is quicker and cheaper. We only suggest a conversion when it makes sense for how you use hot water.
Will my radiators need replacing too?
Usually not. Most radiators are fine once the system is cleaned. We’ll point out any that are corroded, leaking or too small for the room, but it’s your choice.
What happens to my old boiler?
We disconnect it, take it away and dispose of it properly, along with any tanks or cylinder we remove.
More boiler help
- Boiler installationNew boilers fitted across Croydon
- Combi boilersHot water on demand, no tanks
- ConversionsSystem, regular or back boiler to combi
- Boiler repairBreakdowns, leaks, fault codes
- Boiler servicingAnnual service and landlord certificates
- Installation costWhat decides the price
- Emergency repairNo heating or hot water today
- Landlord certificatesAnnual gas safety record (CP12)
- Power flushClear sludge, fix cold radiators
- Moving a boilerNew room, new wall or the loft
Get a price for your replacement boiler
Answer a few quick questions, add a photo if you can, and a Gas Safe engineer will come back to you with a price.