Mon–Sun, 8:30am–5:30pminfo@harrisonejonesheating.co.uk 07523 7382850151 384 5908 HomeAboutServices Areas ReviewsContact Us07523 738285Get a Free Quote New Boilers Fully Fitted from £1,299 with Immediate Installation and a FREE Gas Safety Certificate HomeGas EngineerBoiler ReplacementBoilers # Boiler Replacement in Liverpool: Old Unit Out, Right Boiler In, Certified the Same Day Straight swaps and full conversions from £1,299 fully fitted, with the old boiler removed and disposed of, the system flushed and protected, and a FREE Gas Safety Certificate on completion. Get a Free Quote07523 738285 Gas Safe registered no. 576059 · fixed written price · FREE Gas Safety Certificate Gas Safe registered Registration no. 576059 · licence no. 3715984 Fixed written prices Agreed before work starts, no hourly rates Boilers from £1,299 Fully fitted, immediate installation available FREE Gas Safety Certificate With every new boiler installation Open 7 days Mon–Sun, 8:30am–5:30pm Overview ## What This Service Is, and Who It Is For ### What it is Boiler replacement is the removal of an existing appliance and the installation of a suitable modern replacement: either a like-for-like swap in the same position, or a conversion that changes the system type or the boiler's location. It includes decommissioning and removing the old unit, correcting gas, flue and condensate to current standards, cleansing and protecting the system, commissioning, certification and warranty registration. ### Who it is for Households whose boiler is beyond economic repair or unreliable, people who have been quoted for a repair that costs a meaningful fraction of a new appliance, owners of old back boilers and floor-standing units, and landlords replacing appliances that repeatedly fail inspection or generate callouts. ### When you need it When repairs are recurring, when parts are obsolete, when the boiler has been condemned or is showing combustion problems, when it cannot keep up with the household, or when you want to replace on your terms rather than in an emergency. ### Why it needs a registered engineer Replacement is where the specification decisions get locked in for a decade or more, and where regulations have usually moved on since the old unit was fitted. Flue distances, condensate routes, gas pipe sizing and system protection all need to meet current standards, not the ones that applied when the old boiler went up. A swap done to the old standard is a swap that will cause problems. Related services - Boiler Installation - Back Boiler Removal & Replacement - Heating System Upgrades - Boiler Service Areas we cover - Liverpool - Knowsley - Prescot - Halton - St HelensTowns we cover West Derby, Belle Vale & Netherley, Clock Face & Sutton Manor, Tarbock Green, Hough Green, Huyton, Kirkby, Halewood, Whiston, Rainhill, Eccleston Park, Newton-le-Willows, Widnes, Runcorn, Woolton, Allerton, Childwall, Wavertree, Garston, Speke, Crosby, Bootle, Aintree, Maghull, Birkenhead Speak to an engineer Mon–Sun, 8:30am–5:30pm 07523 738285Get a Free Quote The cost of leaving it ## What Happens If This Gets Left Delaying a replacement past the point of sense costs money twice: once in repairs, once in the emergency you eventually have. ### Risks and escalating costs - Money spent on repairs to an obsolete appliance does not reduce the cost of the replacement you will still be buying. - Once a part is no longer manufactured, a single failure ends the boiler regardless of how much you have already spent on it. - An old boiler with deteriorating combustion is a genuine safety matter: a cracked heat exchanger or blocked flue can spill combustion products into the room. - Emergency replacement in a cold snap removes your choice of model, date and price, and leaves the house cold in the meantime. - In a rental, an appliance that fails a gas safety inspection has to be dealt with immediately, and immediate is always more expensive than planned. ### Mistakes we are called out to fix - Replacing like-for-like on output without rechecking the property's heat loss since it was insulated, glazed or extended. - Leaving the old sludged system unflushed and connecting a brand-new heat exchanger to it. - Reusing an old flue or condensate arrangement that no longer meets current requirements. - Not checking whether existing gas pipework can carry a higher-input appliance. - Sinking a large repair bill into an appliance already at the end of its life, on the advice of whoever was going to do the repair. Our process ## How We Carry Out the Work, Step by Step - 1 ### Step 1: Assessment and honest repair-versus-replace advice We inspect the existing appliance and system, tell you what has failed and what it would cost to repair, and show you the replacement figures alongside it so the decision is yours with real numbers in front of you. - 2 ### Step 2: Specification and fixed price Recommended boiler type, output, controls and any pipework, flue or condensate corrections, all written down with a total price from £1,299 fully fitted. - 3 ### Step 3: Removal and installation System drained, gas isolated, old boiler decommissioned and removed for responsible disposal, new appliance mounted, gas, flue and condensate brought up to current standards, magnetic filter fitted. - 4 ### Step 4: Flush, dose and commission System cleansed and dosed with inhibitor, boiler commissioned to manufacturer figures, combustion readings recorded, tightness test performed and radiators re-balanced. - 5 ### Step 5: Certification, warranty and clean-up FREE Gas Safety Certificate issued, Benchmark record completed, manufacturer warranty registered on your behalf, controls explained, old boiler and packaging taken away. What you get ## The Difference It Makes ### From £1,299 fully fitted A complete replacement price agreed in writing, with the old appliance removed and disposed of included. ### Right specification, not just a swap Output rechecked against the property as it is today, and the flue, gas and condensate brought up to current standards. ### System protected from day one Flush, inhibitor and a magnetic filter, so the new heat exchanger is not fed by the old system's debris. ### FREE Gas Safety Certificate Issued with every installation, giving you documented proof of a safe, certified appliance. ### Warranty registered for you The manufacturer cover is put in force at handover rather than left as a job you have to remember. ### One day for most swaps Straight replacements are usually completed in a single day, with conversions typically two. In detail ## Boiler Replacement Scenarios and Technical Detail A straight combi-for-combi swap in the same position is the quickest replacement, but it is rarely purely mechanical. Modern appliances have different clearance requirements, different condensate arrangements and often different flue diameters, and the gas supply must be verified against the new appliance's rated input rather than assumed adequate. We also take the opportunity to correct anything the previous installation got wrong, because with the boiler off the wall, that work is far cheaper than it will ever be again. Back boiler removal is common in Merseyside's older housing. These units sit behind a fireplace with a gas fire on the front, and removal means decommissioning the appliance, sealing or reinstating the chimney and flue arrangement correctly, and relocating the new wall-hung boiler to a practical position: typically a kitchen or utility wall where flue and condensate can be routed properly. It changes pipework routes, so it takes longer than a wall-hung swap and needs proper survey rather than a price over the phone. Conversions change system type as well as appliance. Going from a conventional system with loft tanks and a cylinder to a sealed combi means removing tanks, capping redundant feeds, fitting an expansion vessel and pressure relief, and adapting pipework. Going the other way: combi to system boiler and unvented cylinder: is the right move for households where two showers run at once. Either way we measure mains flow and pressure first, because the decision rests on that measurement, not on preference. Boiler relocation deserves its own thought. Moving a boiler from a bedroom cupboard or an awkward loft position to a kitchen or utility wall improves servicing access, shortens the flue run, and gets the condensate somewhere sensible. It adds pipework and making good to the job, and it is far cheaper to do at replacement time than as a separate exercise later. If your current position has always been a nuisance, tell us at survey. ### Residential and commercial properties Domestic replacements: houses, flats, HMOs and rental properties: are our routine work. Small commercial premises running domestic-type appliances are also covered; confirm the property type when you enquire so we can advise on the correct certification. ### Variations of this service - Like-for-like boiler swap Same position, same system type, with gas, flue, condensate and system protection brought up to current standards. - Back boiler and floor-standing removal Old back boilers and floor-standing units removed and replaced with a modern wall-hung appliance in a practical position. - System conversions Conventional to sealed combi, or combi to system boiler with an unvented cylinder for multi-bathroom homes. - Boiler relocation Moving the appliance to a better position for flue routing, condensate discharge and future servicing access. ### Materials, parts and equipment - Worcester Bosch, Vaillant, Baxi and Heatline boilers - Manufacturer flue kits and plume management components - Magnetic system filters and central heating inhibitor - Expansion vessels, pressure relief valves and filling loops - Unvented cylinders and associated safety controls where specified - Programmable, wireless and smart thermostats Questions ## Boiler Replacement: Frequently Asked Questions How much does boiler replacement cost in Liverpool?From £1,299 fully fitted, including removal and disposal of the old appliance and a FREE Gas Safety Certificate. The final price depends on the boiler chosen and whether the job is a swap, a conversion or a relocation, all of which is set out in your written quote. Should I repair my boiler or replace it?We give you both numbers and the reasoning. If the appliance is sound and one part has failed, repair usually wins. If parts are obsolete, the heat exchanger is compromised, or the repair costs a large share of a new installation, replacement is the better spend. How long does a boiler replacement take?A straight swap is usually a single day. Conversions, back boiler removals and relocations typically take two days, and we state the expected duration in the quote. Do you take the old boiler away?Yes. The old appliance is decommissioned, removed and disposed of responsibly, along with all packaging, as part of the price. Can I move the boiler to a different room?Usually yes, and replacement time is the cheapest moment to do it. Relocating to a kitchen or utility wall often improves flue routing, condensate discharge and future servicing access. We assess the pipework implications at survey. Will my radiators and pipework need replacing too?Not normally. We check the system's condition and sizing, cleanse and protect it, and tell you honestly if any part of it will hold the new boiler back rather than discovering it afterwards. What warranty do I get?The manufacturer's warranty for the boiler you choose, registered by us at handover. The term varies by brand and model and is confirmed in your written quote. Do you replace boilers in rental properties?Regularly. We work to appointment slots that suit tenants and email certification straight to the landlord or managing agent the same day wherever possible. Still not sure? Send us the details or ring 07523 738285. Your next step ## Get Your Fixed Price in Writing Send us the details and we'll come back with a clear price, or ring now if you're without heating or hot water. - Gas Safe registered no. 576059 · licence no. 3715984 - 25 Bardley Cres, Tarbock Green, Liverpool L35 1RJ - 07523 738285 · 0151 384 5908 - info@harrisonejonesheating.co.uk - Mon–Sun, 8:30am–5:30pmCall 07523 738285 ### Request your free fixed price Takes under a minute. No pushy sales visit, no obligation. Or call us direct on 07523 738285 · 0151 384 5908 Gas Safe registered heating and boiler engineers serving Liverpool, Knowsley, Halton, St Helens and the wider Merseyside area. Contact - 25 Bardley Cres, Tarbock Green, Liverpool L35 1RJ, United Kingdom - 07523 738285·0151 384 5908 - info@harrisonejonesheating.co.uk - Mon–Sun, 8:30am–5:30pm Services - Central Heating Installation - Central Heating Repairs - Radiator Installation - Heating System Upgrades - Boiler Installation - Boiler Replacement - Boiler Repairs - Boiler Service - Gas Safety Certificate - Landlord Certificate - Gas & Hob Installation - Boiler Installer - Boiler Swap - New Boiler - Emergency Boiler Repair - Combi Boiler Installation - System Boiler Installation - Gas Fitters - Gas Fire Service - Gas Fire Repairs - New Boiler Cost Guide - Boiler Installation Merseyside - Worcester Bosch Boiler Repair & Servicing - Radiator Replacement & Supply and Fit - Heating Engineers Liverpool - Baxi Boiler Repair & Servicing - Vaillant Boiler Repair & Servicing - Back Boiler Removal & ReplacementWhat We Do - Gas Engineer - Gas Safety - Central Heating - Boiler Supplier - Heating Contractor - Plumber Areas We Cover - Liverpool - Knowsley - Prescot - Halton - St Helens - All areas we coverCompany - About us - Our work - Heating advice - Reviews - Contact - Privacy policy - Terms & conditions - Cookie policy - Cookie settingsGet a Free Quote © 2026 Harrison E Jones Heating | Liverpool Boiler Installation. 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