07815 577546 ghslondon@gmail.com Mon–Sat 7am–8pm Gas Safe 552913 AboutServices Areas Our WorkReviewsContact07815 577546Get a Free Survey Home / Services / Boilers & HeatingBoiler installation, servicing & repairs · South East London & NW Kent # Boiler InstallationSpecialists inEltham & SE London A new Vaillant, Baxi or Worcester Bosch boiler from £1,600 + VAT, fitted by a Gas Safe registered father-and-son team. Free survey, fixed-price written quote within 24 hours, and up to 10 years' manufacturer warranty depending on the model. Book My Free Survey 07815 577546 Google 4.8 from 18 reviews · Checkatrade 10/10 · Gas Safe 552913 Gas Safe Reg. 552913 19 years' experience 2-year workmanship guarantee Up to 10 yrs Manufacturer warranty, model dependent Insured Public & employers' liability Service overview ## A boiler sized, fitted and explained properly Your boiler heats your home and, in most houses, your hot water. When it's old, unreliable or inefficient, you notice it every day: radiators that take ages to warm, showers that run lukewarm and a boiler that seems to need a repair every winter. Greenwich Heating Solutions installs and replaces gas boilers, services them and repairs heating systems. We're approved installers for Baxi, Vaillant and Worcester Bosch, with Vaillant our preferred brand. Depending on the model, manufacturer warranties run up to 10 years, and every installation also carries our own 2-year workmanship guarantee. Gas work must by law be carried out by a Gas Safe registered engineer. GHS is Gas Safe registered under number 552913 and holds ACS gas qualifications, G3 unvented hot water qualifications and Water Regulations qualifications, which covers combi boilers, system boilers and unvented cylinders. Josh runs the business and works alongside his father. Customers regularly mention the same things: turning up on time, clear explanations of how the new controls work, and leaving the area clean and tidy. One customer noted that Josh resolved a gas supply pressure issue to the boiler during the install and did not charge extra for it. ### Who it's for - Homeowners with an old or unreliable boiler - Households wanting to switch from an open-vented system to a combi - Anyone adding a smart thermostat such as Hive - Landlords and homeowners needing annual servicing ### When you need it - Before winter, when a breakdown is most disruptive - When repair costs on an ageing boiler keep adding up - When hot water or heating becomes unreliable - When your boiler is due its annual service What goes wrong ## Why an ageing boiler gets more expensive the longer you wait Boilers rarely fail at a convenient time. Most breakdowns happen when the heating is working hardest, in the depths of winter. ### Winter breakdowns An old boiler under full load in January is the one most likely to fail, leaving you without heating or hot water while you wait for parts. ### Rising repair bills Heating repairs are £120 + VAT for the first hour. On an old boiler, repeated call-outs and parts can soon approach the cost of a replacement. ### Wasted gas Older boilers and poorly set-up controls burn more gas to deliver the same warmth, and that shows up on every bill. ### Safety risks Gas appliances that aren't serviced or are fitted by unregistered installers put your household at risk. Only use a Gas Safe registered engineer. ### Low pressure & poor hot water Problems like gas supply pressure issues or failing components reduce performance until the boiler locks out altogether. ### Lost warranty cover Many manufacturer warranties depend on annual servicing. Skip it and you may lose the cover you paid for. ### Common mistakes we see - Waiting until the old boiler fails completely in mid-winter - Choosing a boiler on price without checking it suits the property - Keeping an open-vented system when a combi would suit better - Missing annual services and losing warranty cover - Not asking for a fixed, written price before work starts - Using someone who isn't Gas Safe registered Our process ## How your new boiler gets fitted - 01 ### Free survey Josh visits, checks your existing system, flue, gas supply and hot water needs, and recommends the right boiler. - 02 ### Fixed-price quote A written, fixed-price quotation within 24 hours of the survey, including anything like a system conversion or smart thermostat. - 03 ### Installation The old boiler is removed and the new one fitted with pipework tidied. Many replacements are completed in a single day. - 04 ### Testing & commissioning Gas tightness, flue and system checks, with the boiler commissioned to the manufacturer's requirements. - 05 ### Handover & guarantee We explain the controls, register the warranty and leave the area tidy. Your 2-year workmanship guarantee starts from day one. Installations normally require a 50% deposit, with the remaining 50% payable on completion. We accept bank transfer, card and cash. What you get ## What a properly fitted boiler gives you ### Quick installs Customers describe replacements done in one day and conversions in just over half a day, so disruption is kept to a minimum. ### Gas safety Gas Safe registered 552913, with ACS, G3 unvented and Water Regulations qualifications. ### Longevity Vaillant, Baxi and Worcester Bosch boilers with manufacturer warranties of up to 10 years, depending on the model. ### Lower running costs A modern boiler set up correctly with good controls uses gas more efficiently than an ageing one. ### Reliable heating Radiators warm up and hot water is there when you need it, without the recurring winter call-outs. ### Peace of mind A fixed price agreed before work starts and a 2-year workmanship guarantee on the installation. In detail ## Boilers and heating systems explained The right boiler depends on your home, how many bathrooms you have and how you use hot water. Here's what we look at. ### Combi boilers A combination boiler heats water on demand and provides central heating from one compact unit, with no hot water cylinder or loft tanks. It frees up space and suits many flats and houses with one main bathroom. ### System boilers and unvented cylinders System boilers work with a hot water cylinder and suit homes with more than one bathroom where several taps may run at once. With an unvented cylinder, hot water is delivered at mains pressure. Our G3 qualification covers the installation of unvented hot water cylinders. ### Open-vented to combi conversions Many older homes still have an open-vented system with tanks in the loft. Converting to a combi removes the tanks and cylinder and simplifies the system. One customer described how Josh and his father converted their open system to a combi in just over half a day and cleaned up afterwards. ### Brands we install We're approved installers for Baxi, Vaillant and Worcester Bosch, and Vaillant is our preferred brand. Manufacturer warranties run up to 10 years, depending on the model chosen. ### Smart thermostats and controls Good controls help any boiler work better. We install smart thermostats such as Hive and explain how to set them up, so you can control the heating from your phone and avoid heating an empty house. ### Boiler servicing An annual boiler service starts from £95 + VAT. It checks the boiler is operating safely and efficiently and helps keep your manufacturer's warranty valid. ### Heating repairs Heating repairs are £120 + VAT for the first hour, then £50 + VAT per additional half-hour. Parts, materials and additional works are charged separately where applicable. If a repair doesn't make sense on an older boiler, we'll say so and give you a replacement price instead. ### Where we work Boiler installations and servicing are focused on South East London and North West Kent: Eltham, Welling, Blackheath, Greenwich, Chislehurst, Petts Wood, Bickley, Sundridge Park, Bromley, Beckenham and Dulwich. ### Related services & areas - Air-source heat pumps: a low-carbon alternative to gas, with Boiler Upgrade Scheme access for eligible customers. - Air conditioning: home cooling from £1,500, zero VAT until 31 March 2027. - All heating & cooling services: air conditioning, boilers and heat pumps compared. - Areas we cover, covering 14 towns across South East London and Kent. - Customer reviews - read what homeowners say about Josh's work. - Greenwich Heating Solutions home | heating, cooling and renewables in one place. ### Boilers & Heating near you - Boilers & Heating Eltham - Boilers & Heating Welling - Boilers & Heating Blackheath - Boilers & Heating Greenwich - Boilers & Heating Chislehurst - Boilers & Heating Petts Wood - Boilers & Heating Bickley - Boilers & Heating Sundridge Park - Boilers & Heating Bromley - Boilers & Heating Beckenham - Boilers & Heating Dulwich - Boilers & Heating Sevenoaks - Boilers & Heating Westerham - Boilers & Heating Tunbridge Wells FAQ ## Boilers & Heating questions ### How much does a new boiler cost? ### How long does a boiler replacement take? ### Is the boiler survey free? ### Which boiler brands do you fit? ### What warranty and guarantee do I get? ### How much is a boiler service? ### How much do heating repairs cost? ### Can you convert my old system to a combi? ### Are you Gas Safe registered? ### When can I contact you? Next step ## Get a warm, reliable home before winter Book a free boiler survey and receive a fixed-price written quote within 24 hours. Honest advice, a tidy install and a 2-year workmanship guarantee. 07815 577546 - Gas Safe registered 552913 - F-Gas registered and qualified - 2-year workmanship guarantee - Google 4.8 from 18 reviews · Checkatrade 10/10 from 12 reviewsPrefer to read more first? Visit our contact page. Heating, cooling and renewables for homeowners across South East London and Kent. ### Contact - 07815 577546 - ghslondon@gmail.com - Based in Eltham, SE9 - Monday to Saturday, 7am to 8pm - Sunday: closed ### Services - Heating & cooling services - Air conditioning installation - Boiler installation & servicing - Air-source heat pump installation - Heating engineer reviews - Areas we cover in SE London & Kent - Our installation work - About GHS ### Areas Eltham · Welling · Blackheath · Greenwich · Chislehurst · Petts Wood · Bickley · Sundridge Park · Bromley · Beckenham · Dulwich · Sevenoaks · Westerham · Tunbridge Wells © 2026 Greenwich Heating Solutions Ltd. Gas Safe registered 552913 · F-Gas registered · Checkatrade member Privacy PolicyTerms & ConditionsCookie PolicyContact 07815 577546Free Quote