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 EngineerNew BoilerBoilers # A New Boiler in Liverpool: What It Costs, What You Actually Need Straight answers on new boiler cost before you commit to anything: the right type and output for your home, what a fitted price genuinely includes, and a fixed written figure agreed before any work starts. Get a Free Quote07523 738285 Gas Safe registered no. 576059 · new boilers fully fitted from £1,299 · fixed written price before any work starts 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 Buying a new boiler means choosing between three fundamentally different types (combi, system or regular/heat-only), sizing the output correctly for the property, and deciding on a brand and control package, all before a single price means anything. A fitted price should cover the boiler, the flue, any pipework alterations, a magnetic filter, controls, the system flush, commissioning, the Benchmark paperwork and clearance of the old unit. Anything less is a partial quote wearing a full quote's number. ### Who it is for Homeowners replacing a boiler that has become unreliable or uneconomical to keep repairing, buyers of older Liverpool terraces and semis inheriting a boiler of unknown age, and anyone extending or renovating who needs to know whether their current boiler has the output to carry the extra load before committing to building work. ### When you need it The best time to plan a new boiler is before the old one fails outright, when you can compare options calmly rather than being without heat in January and taking the first available slot. If your existing boiler is over ten to twelve years old, needs parts that are becoming hard to source, or has had more than one breakdown in a season, it is worth pricing a replacement now rather than waiting for the next fault. ### Why it needs a registered engineer A new boiler is a fifteen-year decision made in a single afternoon of quoting, so the two things worth getting right are size and hot water demand. An undersized boiler runs flat out and never quite heats the house on the coldest days; an oversized one short-cycles, which wastes gas and wears the boiler out faster than steady running would. Getting the type right (combi versus system versus regular) matters just as much as the brand on the case. Related services - Boiler Installation - Combi Boiler Installation - System Boiler Installation - Boiler Replacement - Central Heating Installation 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 Buying a boiler on price per box alone is how people end up paying twice: once for the unit, and again a year later fixing a mismatch nobody flagged. ### Risks and escalating costs - A combi boiler fitted into a house with two bathrooms used at the same time in the morning will never deliver two decent showers together, no matter how good the brand is; that is a design mismatch, not a fault. - A boiler sized off the old radiator count rather than actual room heat loss and household hot water use either underperforms in the coldest weeks or short-cycles and wears out early. - A headline low price that excludes the magnetic filter, condensate pump, flue extension or making good turns into extra invoices once the engineer is already on site. - Skipping a system flush before fitting a new boiler pushes years of old sludge from the existing pipework straight into a brand new heat exchanger, and manufacturers routinely decline warranty claims once that is found. - Choosing a boiler nobody locally services well leaves you waiting longer for parts and call-outs for the next decade. ### Mistakes we are called out to fix - Comparing quotes on the headline number without checking whether flushing, filter, controls and certification are included in each one. - Assuming bigger output is always better; an oversized boiler cycles on and off more, which is harder on components and less efficient, not more powerful in any useful sense. - Not measuring the incoming mains water pressure and flow rate before choosing a combi, then being disappointed by shower performance after installation. - Choosing a boiler based on a neighbour's recommendation without checking it matches your own property's hot water demand and bathroom count. - Not asking what happens to the old boiler, old cylinder or old tanks; removal and disposal should be part of the quoted price, not a surprise add-on. Our process ## How We Carry Out the Work, Step by Step - 1 ### Step 1: Home visit and hot water assessment We look at your current setup, count bathrooms and taps used at once, check the incoming gas supply and, for combi options, test the mains water flow rate and pressure, because that number decides whether a combi will genuinely satisfy the household. - 2 ### Step 2: Boiler type and output recommendation Based on room heat loss and hot water demand we recommend combi, system or regular, and the output in kW that matches your property, not the biggest number on the price list. - 3 ### Step 3: Written quote covering the whole job Boiler make and model, flue route, pipework changes, filter, controls, flush, certification and clearance of the old unit, all itemised, all in one fixed price agreed before work starts. - 4 ### Step 4: Installation and system flush The old boiler is removed, the system is flushed to clear existing debris, the new boiler is fitted, flued and commissioned, and the pipework is pressure tested before we sign it off. - 5 ### Step 5: Handover and certification You get a plain-English run-through of the controls, the Benchmark commissioning record, a free Gas Safety Certificate, and the manufacturer warranty registered in your name. What you get ## The Difference It Makes ### The right type, not just a boiler Combi, system or regular chosen against your actual hot water demand rather than a like-for-like swap of whatever was there before. ### Output matched to the property Sized against room heat loss and household use so it heats every room properly without short-cycling or running flat out unnecessarily. ### One fixed written price Everything the job needs is itemised and priced before we start, so there is no invoice creep once the old boiler is off the wall. ### Lower bills from day one A correctly sized modern condensing boiler with proper controls runs at lower flow temperatures, which is what actually delivers the efficiency gain on your gas bill. ### Free Gas Safety Certificate Every new boiler installation includes a free Gas Safety Certificate, useful documentation for your own records or for a future sale. ### Recognised brands, properly registered We fit Vaillant, Worcester Bosch, Baxi, Heatline and Main, and we register the manufacturer warranty on your behalf as part of the handover. In detail ## New Boiler Cost and Choices, Explained Properly The single biggest driver of new boiler cost is not the badge on the front, it is what has to change around it. A straightforward like-for-like swap, same position, same flue route, same boiler type, is the cheapest version of the job because there is minimal pipework disturbance. Moving the boiler to a new location, converting from a tank-fed system to a combi, upgrading pipework that was never sized for a modern flow rate, or extending a flue further than the standard run all add labour and materials on top of the appliance itself. When you compare quotes, ask specifically what work each price assumes, because two quotes for the 'same boiler' can be pricing two different jobs. Output, measured in kW, should follow a heat loss calculation and a hot water demand assessment, not the size of the old boiler. Many older boilers in Merseyside homes were oversized for the property from the start, because older sizing methods were far less precise than current methods. A correctly sized modern boiler is often a lower kW rating than the one it replaces and still heats the house faster and more evenly, because it is matched to the actual fabric of the building rather than guessed at. Hot water demand decides boiler type more often than heating demand does. A single-bathroom household with one shower running at a time is well served by a combi: instant hot water, no tank, no cylinder taking up airing cupboard space. A household with two bathrooms in regular simultaneous use, or a low incoming mains flow rate that limits combi performance, is usually better served by a system boiler paired with an unvented cylinder, which stores hot water at mains pressure and can supply two outlets at once without the flow dropping. We measure your actual mains pressure and flow rate before recommending either, rather than assuming. Controls make a measurable difference to running cost over the life of the boiler. A programmable room thermostat, thermostatic radiator valves fitted correctly, and weather compensation where the boiler supports it, all let the appliance run at a lower flow temperature more of the time. Lower flow temperature is what allows a condensing boiler to actually condense and recover extra heat from the flue gases, which is where most of the efficiency saving over an old boiler genuinely comes from, more than the badge or the advertised efficiency percentage on its own. ### Residential and commercial properties Most of our new boiler work is domestic: houses, flats, bungalows and rental properties across Liverpool, Knowsley, Halton and St Helens. Older solid-wall terraces, 1930s semis and post-war estate housing each present different flue routing and pipework constraints, so tell us your property type and age when you enquire and we will flag anything that affects the price before quoting. ### Variations of this service - Like-for-like combi replacement Same boiler type, similar position, minimal pipework change: the most straightforward and typically the most cost-effective new boiler job. - Tank system to combi conversion Removing the cold tank and cylinder, reclaiming loft and airing cupboard space, and re-piping to a single sealed system, for households whose hot water demand suits a combi. - Combi to system boiler with unvented cylinder For households that have outgrown a combi's flow rate: stored hot water at mains pressure for multiple bathrooms used at once. - Relocation and repositioning Moving the boiler to a kitchen cupboard or utility room during a renovation, with a new flue route and extended pipework priced and agreed up front. ### Materials, parts and equipment - Vaillant, Worcester Bosch, Baxi, Heatline and Main boilers - Magnetic system filter fitted as standard on new installations - Programmable, wireless and smart room thermostats - Condensate pipework installed to current building regulations - Copper and press-fit pipework with full-bore isolation valves - Central heating inhibitor and full system flush Questions ## New Boiler: Frequently Asked Questions How much does a new boiler cost in Liverpool?New boilers are fully fitted from £1,299, with the final figure depending on boiler type, output, pipework changes and any conversion work involved. You get an itemised written quote covering the whole job before you commit to anything. What is the difference between a combi, system and regular boiler?A combi heats water instantly on demand with no tank or cylinder. A system boiler works with an unvented cylinder that stores hot water at mains pressure, suited to homes with higher simultaneous hot water demand. A regular (heat-only) boiler works with both a cold water tank and a hot water cylinder, common in older systems being upgraded gradually. How do I know what size boiler I need?Output should be based on a heat loss calculation for your property and an assessment of hot water demand, not simply matched to the boiler you are replacing. We measure and calculate this during the home visit rather than guessing from the old unit's rating plate. Will a combi boiler give me enough hot water for my house?It depends on incoming mains pressure and flow rate and how many outlets run at the same time. We test your mains supply before recommending a combi, and if your household regularly needs two showers running together, a system boiler with a cylinder is usually the better fit. What is included in your fitted price?The boiler, flue, necessary pipework alterations, magnetic filter, controls, full system flush, commissioning, Benchmark paperwork, a free Gas Safety Certificate and clearance of the old boiler. It is all itemised in the written quote so you know exactly what you are paying for. How long does fitting a new boiler take?A straightforward like-for-like swap is often completed in a day. Conversions, relocations or pipework upgrades take longer, and we tell you the expected timescale in the written quote before work starts. Which boiler brands do you fit?We fit Vaillant, Worcester Bosch, Baxi, Heatline and Main, and we can talk through the differences in warranty, parts availability and control options for each when we quote. Do you cover my area of Merseyside?We install new boilers across Liverpool, Knowsley, Halton and St Helens, including Huyton, Prescot, Widnes, Runcorn, Crosby, Woolton and Newton-le-Willows. We answer the phone seven days a week, 8:30am to 5:30pm, and we tell you the same day whether we can get to you. 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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