Croydon · CR0 · Greater London
Quote online, pick your boiler and have a Gas Safe registered engineer install it at your Croydon home – next-day fitting is often possible. Replacement gas boilers in Croydon cover combi swaps in flats and terraces, system boilers for larger houses, back boiler removals and complete heating upgrades.
Croydon has Victorian villas, flats above shops, town-centre towers and family semis across CR0 and the surrounding postcodes. We install Worcester Bosch, Vaillant, Ideal, Baxi and Viessmann boilers to suit each type.
In flats and converted houses, shared or awkward flue routes often decide the model, and a compact Vaillant ecoFIT pure or Ideal Logic Max gives us flexibility. Victorian villas with older pipework may need a powerflush before the new boiler goes on. Family semis in Shirley and Addiscombe are usually a straightforward Worcester Bosch Greenstar 4000 combi swap.
Replacement boiler prices in Croydon depend on the home more than the postcode. A flat in the town centre needs a different job to a four-bedroom house in Purley, and flue length, pipework condition and the type of controls all change the figure. Like-for-like combi swaps start from £1,759 fitted, while Worcester Bosch Greenstar 4000 packages start from around £2,450. What you see online is what you’re charged. Nothing gets added once the engineer arrives.
| Installation type | What’s involved | Price from | Time on site |
|---|---|---|---|
| Like-for-like combi swap | Replace an existing combi in the same position, with new flue, filter and controls | £1,759 | 1 day |
| Conventional or system to combi | Remove tanks and cylinder, cap off pipework, fit combi and upgrade gas supply if needed | £2,350 | 1–2 days |
| Back boiler replacement | Remove back boiler and fire, make good, fit new boiler in a new location | £2,795 | 2+ days |
| System boiler with cylinder | Suited to larger homes with multiple bathrooms; new or replacement unvented cylinder | £2,995 | 1–2 days |
| Boiler relocation | Move the boiler to a loft, garage or new room with new gas, flue and condensate runs | £2,250 | 1–2 days |
These are starting prices for a standard installation by a Gas Safe registered engineer; your online quote confirms the exact cost for your home.
Get a new boiler on finance in Croydon from £23.26 a month. As an example, a £1,799 boiler spread over 10 years at 9.9% APR works out at £23.26 per month. Shorter terms plus interest-free and buy now, pay later options are available, subject to status. See our boiler finance options for the full details.
Housing in Croydon changes every few streets. These are the three jobs we fit most, and what usually works best for each.
A compact combi in a kitchen cupboard keeps the footprint small. We check ventilation, the flue exit and the freeholder’s requirements first.
Bigger houses with two bathrooms usually suit a system boiler with a cylinder, so showers stay strong while someone runs a bath.
Straight combi swaps often work well here, with a filter and controls upgrade to cut running costs.
Local boiler installers
Croydon is south London’s largest borough by population, with a busy town centre of towers and shops surrounded by Victorian villas in Park Hill and Addiscombe, Edwardian terraces in Thornton Heath and sweeping 1930s semis towards Purley and Coulsdon. New Addington and Selsdon add post-war estates and homes on the edge of the North Downs.
Many Croydon homes have been converted into flats, extended into lofts or opened out at the back, and each change affects the boiler. When we price replacement boilers in Croydon we survey the property, check the flue route and look at hot water demand first, so the fixed price covers the right boiler.
Choose your boiler and installation day online and your Gas Safe registered engineer does the rest: removing and disposing of the old boiler, fitting and commissioning the new one, and registering the guarantee, with Building Control notified for you before they leave.
Croydon runs from Victorian villas near the centre to 1930s semis and downland edges around Selsdon and Coulsdon. These are the points we raise most often here.
Croydon tap water is very hard, so scale builds quickly in combi heat exchangers. Where hardness in your postcode is above 200ppm, we fit a scale reducer with a combi boiler.
Large villas in Park Hill and Addiscombe often have original pipe runs and boilers in awkward spots. We assess the whole system before we quote.
Town-centre flats may rely on communal risers or short flue routes. We check what the building allows and fit a compact combi where it suits.
Many Croydon houses are split into flats. We check flue positions against neighbouring windows and your lease before work starts.
Interwar semis often have roomy airing cupboards, so a combi swap can be straightforward. We still check mains flow before we recommend one.
Higher ground around Selsdon and Coulsdon can be windy and cold. We insulate external condensate pipes so they do not freeze.
Our Gas Safe engineers cover all of Croydon and the surrounding area, including Purley, Coulsdon, Thornton Heath and Selsdon. See all our service areas.
Red pin: Croydon town centre. Green pins: nearby towns we cover — tap a pin to see how far each town is from Croydon. The shaded circle shows roughly 8 miles around Croydon.
We also cover London as a whole, plus neighbouring Sutton (about 4 miles), Bromley (about 5 miles) and Merton (about 6 miles).
Often as soon as the next day, depending on the boiler you choose and engineer availability in the CR0 area. Complete the online quote, select a date that fits, and if there’s no heating or hot water we prioritise your booking.
All CR0 postcodes plus CR2, CR5, CR7, CR8 and SE25, including Purley, Coulsdon, Thornton Heath, Addiscombe and South Norwood, and nearby areas such as Sutton, Bromley and Mitcham. We are part of a nationwide network of Gas Safe engineers, so we can cover the wider area as well.
Croydon tap water is very hard, usually well above 200ppm. Check your postcode on your supplier’s hardness checker. Where levels are above 200ppm, we fit a scale reducer with a combi boiler, as Building Regulations guidance advises.
Yes. We strip out the back boiler and fire, seal the old flue and pipework, and make everything safe before the new boiler goes in. A new condensing combi or system boiler is installed in a better-placed spot. Allow a little longer than for a straight swap. You’ll know how long it will take before we begin.
A boiler replacement is notifiable under Building Regulations and your Gas Safe registered engineer handles the Building Control notification, so a compliance certificate follows. Planning permission is not normally needed for a like-for-like swap, though in a Croydon conservation area such as Park Hill or Addiscombe, check with Croydon Council first if a new flue is needed on a front wall.
Yes. Boiler finance in Croydon includes interest-free, 9.9% APR and buy now, pay later options, with deposits from £0 – see our boiler finance page. All finance is subject to status.
Yes. Disposal is included: your old boiler, and any tanks or cylinder no longer needed after a combi conversion, are removed safely.
All boilers we install come with a manufacturer-backed warranty, typically between 5 and 10+ years depending on the model. Keeping it valid usually means an annual service – our boiler cover plans take care of that for you.
Yes. If there’s no mains gas at your property, we can fit an oil or LPG replacement. We use OFTEC registered engineers for oil and Gas Safe registered engineers with LPG competence for LPG. See our oil boiler installation and replacement and LPG boiler installation and replacement pages for more detail.
Tell us about your home, see fixed-price replacement boiler packages for Croydon and book the installation date that suits you – all online, in a few minutes.