--- title: "Boiler Replacement | Northstar Plumbing" description: "Replace your old boiler with a modern, efficient unit. Safe removal, tidy installation, full commissioning and compliance paperwork included." canonical: "https://www.northstarplumbing.co.uk/services/boiler-replacement" --- ![3D render of a clean utility corner mid-upgrade with exposed copper piping, valves, manifold, pressure gauge, mounting bracket, isolator box, tools, drip tray, hose, and bucket, with negative space and cool crisp lighting.](/_next/image?url=%2Fapi%2Fmedia%2Ffile%2Futility_heating_upgrade_preinstall_3d_render.png%3Fv%3D1770397985822&w=1536&q=75&dpl=dpl_DEc4fGhEc1SCRZZutzoEsRuDy1CJ) Boiler Installation & Replacement # Boiler Replacement [Contact Us](https://www.northstarplumbing.co.uk/redirect) A boiler replacement removes an unreliable or inefficient boiler and installs a new, correctly sized unit that delivers dependable heating and hot water. The service is planned and managed end to end, with clear steps, tidy workmanship, and full commissioning so your system runs safely and efficiently from day one. ## What a boiler replacement delivers A like for like swap or an upgrade, completed to current safety standards and set up for efficient, reliable performance. - Assessment of your existing boiler, pipework, flue route and controls - Advice on boiler size and configuration to suit the property and usage - Safe isolation and removal of the old boiler - Installation of the new boiler with correct connections to heating and hot water - Flue, condensate and safety checks in line with regulations - Commissioning: pressure checks, combustion analysis, settings and balancing where needed - Handover: how to use controls, what to monitor, and maintenance guidance - Certification and required compliance paperwork ### When boiler replacement is the right choice A replacement is usually the best option when repairs are becoming frequent, parts are hard to source, or the boiler is no longer running efficiently. It also makes sense if you are renovating, adding bathrooms, improving heating controls, or want to reduce running costs and improve comfort. ### How the installation is carried out Work starts with an on site check to confirm suitability, access, and any upgrades needed for a safe installation. On the day, the old boiler is removed, the new unit is fitted and connected, then the system is tested and commissioned. You will be shown the controls and provided with the relevant paperwork once everything is working as it should. ### Aftercare and ongoing performance After installation, routine servicing helps protect efficiency and reliability, and supports warranty requirements. If you notice pressure drops, unusual noises, or inconsistent heating, early checks can prevent small issues becoming breakdowns. [Contact Us](https://www.northstarplumbing.co.uk/redirect) ## Client Reviews 5.0 Based on 9 reviews - N Nick F. > Called them out for an old boiler that needed replacing. James was friendly, respectful and took the time to listen. Will definitely call again if we need anything. - J John M. > Phoned because of an old boiler that needed replacing. It's been fine since—no repeat problems. Will definitely call again if we need anything. - A Andrew C. > Phoned because of a boiler that kept cutting out. Feels properly sorted now. Quick job and no mess left behind. Really pleased overall. Show all reviews - A Aaron H. > Called them out for an old boiler that needed replacing. Got it resolved on the first call-out. The plumber was punctual and easy to deal with. Clear, professional service from start to finish. I'd happily book them again. - N Nina C. > We needed help with an old boiler that needed replacing. They were tidy and respectful of the house. No messing about—straightforward from the first call. Glad we went with them. - R Rachel T. > Reached out when we noticed a boiler that kept cutting out. No fuss and no surprise add-ons. Glad we went with them. - M Michael H. > We needed help with an old boiler that needed replacing. No upselling or unnecessary work. Will definitely call again if we need anything. - S Sarah P. > After a few days of an old boiler that needed replacing, we gave them a ring. The engineer who came out was polite and knew their stuff. It was dealt with quickly, which was a relief. Clear, professional service from start to finish. I'd happily book them again. Couldn’t fault it. - D Daniel M. > We'd been putting up with an old boiler that needed replacing and finally called. Mark turned up on time and was a pleasure to deal with. They explained the next steps clearly before turning up. We finally have peace of mind. Wouldn't hesitate to recommend them. 5/5. ## Frequently Asked Questions How do I know if my boiler needs replacing? If repairs are becoming frequent, the boiler is inefficient, or it struggles to provide stable heating and hot water, replacement is often more cost effective. A site assessment can confirm whether a repair, upgrade, or full replacement is the best route. How long does a boiler replacement take? Many straightforward replacements can be completed in a day. If the flue position, pipework, controls, or system condition needs extra work, it may take longer and will be confirmed in advance. Will the old boiler be removed and disposed of? Yes, the existing boiler is safely disconnected and removed as part of the replacement. It is then disposed of through appropriate waste handling. Do you provide Gas Safe paperwork and compliance certification? The installation is commissioned and certified to meet the relevant Gas Safe and Building Regulations requirements. You will receive the necessary documentation as part of the handover. Can you replace boilers for landlords and small commercial premises? Yes, boiler replacement can be planned around tenant access or business hours where possible. The system is commissioned and handed over with clear operating guidance and the required certification. 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