Boiler service in Croydon

For a boiler service in Croydon, book a Gas Safe registered engineer once a year and check who supplies your water. North and central Croydon are on Thames Water, while SES Water supplies from South Croydon southwards. Both supply hard water from chalk, so combis need a hot water check. Town centre flats may also have hidden flues.

PostcodesCR0, CR2, CR5, CR7, CR8

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Homes in Croydon

Croydon is large and mixed. Central Croydon has towers and office blocks converted into flats, plus new build schemes around East and West Croydon stations. Thornton Heath and Norbury have Victorian and Edwardian terraces. To the south, Selsdon, Sanderstead, Purley and Coulsdon are mostly 1930s semis and detached houses, many with system or regular boilers. The borough is run by Croydon Council.

Two water companies, both hard

Croydon sits across two water supply areas. Thames Water covers the north and centre and says all the water in its region is hard. SES Water, Sutton and East Surrey Water, supplies an area running from Morden and South Croydon southwards, drawing on chalk wells. SES publishes average hardness for each of its zones through a postcode lookup.

Your water bill tells you which company you are with. Either way, a combi in Croydon should have its hot water flow checked at the service, and any scale reducer on the cold feed should be looked at. Our post on combi boiler limescale filters explains the options.

Town centre conversions and towers

Many offices in central Croydon have been turned into flats, and new blocks have gone up near the stations. Boilers in these homes are usually compact combis in utility cupboards. In flats built or converted since 2000, flues sometimes run through ceiling voids. The HSE flues in voids guidance says an engineer who cannot inspect a hidden flue must treat the boiler as at risk. Check with your managing agent whether hatches are fitted before booking.

Some blocks use communal heating instead of individual boilers. If you have no gas meter for your flat, ask your building manager.

Southern suburbs with cylinders

Interwar houses in Selsdon, Purley and Coulsdon often have system or regular boilers with hot water cylinders, more radiators and longer pipe runs. A service covers the boiler plus the pump, valves and cylinder controls. Older open vented systems collect sludge, so a magnetic filter clean is worth adding if radiators are cold at the bottom.

Central Croydon blocks often need a fob or concierge sign in for contractors, so tell us when you book. In the southern suburbs, most houses have driveways, which makes visits simpler. If your boiler is in a garage or a loft, check there is a light and safe access. Landlords with Croydon lets can book the yearly gas safety check and a full service at the same time.

Croydon also has many lets. Landlords need the yearly gas safety check on each gas appliance and flue, with copies to tenants within 28 days.