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When a boiler starts breaking down regularly or no longer heats your home as it should, replacing it can offer greater reliability and better control. RCB Heating & Cooling provides professional boiler installation in Carshalton, with honest advice on suitable systems and careful workmanship throughout the job.

We install complete boiler systems in renovated homes, extensions and newly built properties. Every system is planned around the building’s size, heat requirements, number of radiators and expected hot-water use.

Keeping an ageing boiler running can become costly when faults occur more frequently. Our boiler replacement service in Carshalton includes assessing the existing system, removing the old appliance and installing an appropriate modern unit.

Combi boilers provide heating and hot water from one compact appliance, with no need for a separate cylinder. They’re suitable for many homes where space is limited, although we’ll check the water pressure and household demand before recommending one.

A properly sized modern boiler can use energy more effectively than an outdated system. We can also install compatible heating controls, giving you greater control over temperatures and helping you avoid heating rooms unnecessarily.
Carshalton has a varied mix of properties, from period homes near Carshalton Ponds to family houses around Carshalton Beeches and post-war properties in The Wrythe. Some homes still contain older pipework, while others have been extended without the boiler being upgraded to match.
Before recommending a replacement, we inspect the whole heating system. We look at the current boiler, radiators, accessible pipework and controls, then discuss any problems you’ve noticed. These might include slow heating, pressure loss, inconsistent hot water or radiators that never become fully warm.
We’ll explain which boiler options suit the property and provide a clear quotation before starting. During installation, we protect the working area, keep disruption manageable and remove the existing appliance where agreed.
Once the new boiler is fitted, we test the heating and hot water thoroughly. We’ll also explain how to use the controls, including setting heating schedules and temperatures.
If the existing appliance can still be repaired economically, we provide boiler repair in Carshalton. An annual boiler service in Carshalton can also help identify wear and operating issues before they result in an unexpected breakdown.
RCB Heating & Cooling is a Which? Trusted Trader with more than 3,600 completed projects and excellent reviews from customers on Google.
Our base in Sutton means Carshalton is part of our immediate local service area. We understand the heating arrangements found in local flats, terraces, family homes and extended properties. This familiarity helps us spot practical considerations early, including restricted access, ageing pipework and changes to the original heating demand.
Customers value our reliable appointments, straightforward explanations and tidy workmanship. We recommend what the property needs and don’t add unnecessary work to the quotation.
Areas We Cover
We install and replace boilers throughout Carshalton, including Carshalton Beeches, Carshalton on the Hill and The Wrythe. We also serve Sutton, Wallington, Hackbridge, Beddington, Cheam and other nearby areas.

We assess the existing boiler, heating system and your household’s requirements.

We explain the suitable boiler type, output and available control options.

You receive a written quotation describing the agreed work and cost.

We remove the old appliance if required and fit the new boiler carefully.

We test the heating and hot water, demonstrate the controls and answer your questions.

A standard replacement can often be completed within one day. Moving the boiler or changing the system type usually takes longer.
Boiler output depends on the property’s heat demand, number of radiators, bathrooms and hot-water use. We calculate this during the survey.
It may be, provided the water pressure and flow can meet your household’s requirements. Larger homes with several bathrooms may need a different setup.
Yes. We’ll assess the age, condition and nature of the fault before explaining which option offers better value.
Not necessarily. Existing radiators can normally remain if they’re in good condition and provide sufficient heat.
Yes. Annual servicing helps identify developing problems and may be necessary to keep the manufacturer’s warranty valid.
If you’re considering a new or replacement boiler in Carshalton, contact RCB Heating & Cooling to arrange a home survey. We’ll assess the current system, explain the suitable options and provide a clear quotation. We also cover all surrounding areas and postcodes, including Carshalton, Carshalton Beeches, The Wrythe, Sutton, Wallington, Hackbridge, Beddington and Cheam, across the SM1, SM2, SM3, SM5 and SM6 postcode areas.

£15
inc vat
For keeping warranty valid
£22.80
inc vat
For basic protection
£32.40
inc vat
For reliable family heating
£42
inc vat
For total coverage
£66
inc vat
Covering plumbing, drains and more
Features
Annual Boiler Service
Priority Service & Call Outs
Free of Charge Call Outs
1 Free Callout
Boiler and all internals
Labour Cost Discount
10%
100%
100%
100%
Replacement Part Discount
10%
20%
100%
100%
Loyalty Discount
10%
20%
30%
30%
Discount on new boiler installation**
10%
30%
50%
50%
Annual System Water Test
Annual System Anti Corrosion Treatment
Circulation pump
Thermostatic radiator valves
Timer/thermostat
Hot Water Cylinder
Radiators
Heating pipework
All gas supply pipes
System Powerflush (every 5 years)
Plumbing
Drains
Home Electrics
Optional Add-Ons
Unvented Cylinder Service
(Additional £6+VAT)
Gas Fire Service
(Additional £7.50+VAT)
Electrical Cover
(Additional £9+VAT)
/month + VAT
For keeping warranty valid/month + VAT
For basic protection/month + VAT
For reliable family heating/month + VAT
For total coverage/month + VAT
Covering plumbing, drains and moreready to upgrade your heating system?
Contact RCB Plumbing Ltd today to discuss your heat pump care plan.

RCB Plumbing serves local homes and businesses with honest advice, prompt response, and professional workmanship every time.
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