When it is time to change, always seek gas-safe registered expert help.
    If your boiler is over 10 years old then start to consider. Whether you wish to replace your old boiler with a new one or convert your central heating system, email us to visit you and discuss the whole procedure.
    MML Plumbing’s engineers are individually registered, they always carry their Gas Safe photo ID.
    When it comes to planning and budgeting, always involve an expert, but never look at the price ONLY! If something is too cheap, maybe too good to be true.

    When it comes to a huge project like installing a new boiler or new heating, there are so many things to consider. As we said, our first advice is not always to pick the cheapest quotation. The devil is in detail. In the past, we came across many boilers, which weren’t even commissioned, or registered by the Gas Safe authority. This means a lot of things, but most importantly your boiler is, not in the system”, there is no warranty. With our special team, your boiler is registered on the same day as the installation and registered with the manufacturer to receive your parts and labour warranty for up to 12 years. But most importantly, it is 100% safe to use!


    When you are contacting us we will give you clear instructions.

    Quote a boiler installation, step by step:

    1. First of all, we will ask a couple of questions regarding your heating system, boiler, and radiators, whether you are planning to buy your new boiler body or you wish us to supply it. You may also provide us, with your realistic budget, and how much are you planning to spend on your new installation.
    2. We then run a calculation, which will give you a 90% accurate price you are looking to install your new boiler. (For example between £1500-£2000)
    3. If you are happy with our calculation, then our engineer in Hornsey will visit you.
    Our engineer will do some further important gas tests and other things.
    4. After all this, you will receive our AN ESTIMATION via email.
    5. If you are happy with our estimation, we can start the work in just days because we do not want you to be without heating or hot water.


    Vaillant, Baxi, Worcester – Bosch, and Viessmann, are the most reliable boiler brands we are working with! 

    Our engineers earned their names in the Hornsey area. Our engineers are well-known and trusted experts.

    Some of our clients left their feedback to help you decide, you are in the right place right now!

    combi boiler installation


    Why Us?


    1. Affordable, realistic prices
    2. Vetted technicians, engineers
    3. Registered company and engineers
    4. Quality materials supplied, and fast, professional workmanship
    5. Up to 12 years of warranty from the manufacturer after a new boiler installation

    These are just 5 reasons from all, why to choose us as your next installer in Hornsey.


    One of the things that people often forget about boilers is how much they will cost when get older. When you choose us, we can help you save money on installation costs as well as maintenance costs so that your boiler does not give out on you after just a decade of use. We want our clients to be happy with their purchases and we know this means helping them find the best deal possible!

    Up to 10 years of parts and labour warranty

    We do all the necessary paperwork and registrations

    We always pick the best boiler for your Hornsey home

    We are always available online, to support you.


    Claudine de Montule
    Claudine de Montule
    Great and efficient boiler service, fixed price so no surprises. Very professional
    Danuta Miloszewski
    Danuta Miloszewski
    Used MML Plumbing for the first time today. Administrator in office was easy to deal with, efficient and helpful. Plumber arrived on time as arranged, fixed the problem and explained what he had done. Quick, tidy and courteous worker. What I also especially liked was that I was given an actual confirmed time when he would arrive and not one of those two or three-hour 'window slots'!
    Charles V
    Charles V
    MML Plumbing successfully completed the installation of our heating system in our expansive 8-bedroom residence. The placement of the boiler and cylinder was expertly executed in the basement. They meticulously laid new piping throughout the house to facilitate radiators and hot/cold water faucets. The recent commissioning of the system has resulted in its exceptional functionality. Their impeccable organization and absence of any delays were notable. We definitely plan to engage their services again in the future.
    Roger Packham
    Roger Packham
    MML were extremely responsive and accomodating through out. They understood my needs and were solution focused through out the job. I found them so easy to work with and would definitely use them again. Thank you MML.
    Agnes Meszaros
    Agnes Meszaros
    Fast, professional, high quality service at a very reasonable price. I’m really glad I found them.
    Henry Smith
    Henry Smith
    In North London, it can be hard to find a company that you can trust and provide quality work. We called MML Plumbing to install a system boiler and a hot water cylinder. The installation was done in a few days, and now everything is fine. They left the area very clean. I highly recommend them.
    Andrew Healey
    Andrew Healey
    I had a shower replaced. A great job, very satisfied with the work. Levi was friendly, helpful and efficient.
    Jatin Modi
    Jatin Modi
    I have been a landlord for 15 years and used many labour staff in my years. I started to use MML 6months back and now used them 5 times: 1) They are always on time 2) They are respectful 3) I trust their quotes - they do not "make up work" 4) They communicate well on both email and text 5) They are very organised and polite I have dealt with so much domestic help over the years so i know the benchmark - MML are way above Jay (Camden)
    MML fitted a shower. Good price, courteous and thorough communication and excellent standard of work. I will call them again if I have plumbing related work
    Hollie Davies-Smith
    Hollie Davies-Smith
    ⭐⭐⭐⭐⭐ I am thrilled to leave a 5-star review for MML Plumbing's advanced leak detection services. They were able to find a leak that three other plumbers had missed. Their use of thermal imaging and acoustic leak detection tools set them apart from other companies in the area. What impressed me the most was their commitment to resolving the issue without causing unnecessary damage, while other companies suggested tearing apart my ceiling. Their services are not only effective but also affordable.They are a reliable and trustworthy company that goes above and beyond to solve plumbing problems. Thank you, MML Plumbing, for your expertise and exceptional service. I will definitely turn to you for any future plumbing needs. Hollie xxx


    The heating conversion service in Hornsey assures the residents that they will be warm during winter.

    The same procedure with us as the boiler installation swap, the only difference is the price and the labour of conversion. We always try to give you our best service at a reasonable cost. Our experienced engineers in Hornsey have to offer you high-quality boilers at realistic prices!

    After the installation hopefully, you won’t have to worry about a boiler breakdown for long. We also strongly recommend doing your yearly safety check with our professional engineers. We can maintain your boiler well and avoid expensive repairs after the warranty expires.

    boiler installation in Haringey


    Our Boiler Services – Your local offer!

    If your boiler is giving you trouble, there’s no need to worry. MML is a well-known recommended local company in Hornsey with the expertise and skillset needed for boiler installation and repairs.

    We’re committed not only to providing excellent service but also to respecting our customers by listening carefully when they have concerns or questions about their systems so we can provide tailored solutions that best meet each homeowner’s needs! We explain everything!

    We’re always here to help. Whether you need a quote for one of our installation services, or just want some guidance on how we work. We have the experts at your disposal every step of the way – so don’t hesitate to contact us.


    This is a question that plagues many homeowners.
    Guide-Signs to Look for!

    When it comes to the boiler, age matters. If it is a quite new boiler, less than a decade old, it is worth trying to save it.
    However, there are circumstances, when you have to prepare yourself, considering having a new installation.
    The first and obvious sign is an old boiler. Engineers consider 10 yrs old boiler old, but in most of the Hornsey homes, the boilers are 20-40 yrs old.
    That’s not just inefficient but can break down suddenly! Also, if you change parts, another expensive part can fail next. Just not worth it.
    The materials and the labour cost each time of the event, multiply by the occasions, can be the same price as a new boiler and its fitting.


    • You have an issue with your current system and need it replaced now before more damage can occur;
    • The cost for repairs outweighs the benefits so a replacement might be in order instead.
    • Your boiler is over 10 years old and not energy efficient anymore.
    • You can fix this problem by installing a new high-efficiency boiler and upgrading the heating system for better control. The upgrade will save you money in the long run, but your current boiler could be putting lives at risk!
    • Also, with a new boiler installation, you can avoid costly boiler breakdowns.


    When it comes to choosing a new, highly efficient boiler, that will provide your family with years of comfort and safety, there are many different factors you need to consider. You may not even know where the best place to start. Luckily we’re here all day every day-ready 24/7 online when our customers have questions about which type of boiler they should choose or if their current model needs repair.

     Have a look at our boiler guide where we explain what to look out for and how to choose a boiler.

    Your home and business deserve the best of everything. You will love how we make your boiler installation needs our number one priority!

    If you’re looking for a professional, affordable engineer in Hornsey then contact us today. To make it easier on yourself we offer 3 ways to get in touch with us:

    phone 020 8355 0840, email or submit your work in the quote online form!


    Our company specializes in boiler and heating system installation. We pride ourselves on being customer-friendly, so we have 24/7 support ONLINE!

    If you need help with your system or want a budget for the boiler swap costs before contacting us, you can fill out our form online: our contact form allows you to send all the details about your project along with how much money you would like to spend.

    We guarantee 90% accuracy‍ and can give estimates of cost within hours after receiving all the information from customers.

    The installation of your boiler and heating system will be carried out by a qualified registered and insured engineer, with years of experience in the industry.

    After our expert completes the survey on-site at your home or business, you’ll know every detail about our proposed price including any additional costs that may arise such as materials needed for the installation.

    You’ll be happy to know that after we install your new boiler, you’re still in good hands! That’s because as soon as the boiler is running smoothly and efficiently, our specialist will deal with the paperwork and register your boiler with the gas authority.

    After commissioning your new boiler and registering you’re up to 10 years of labour warranty.

    In Hornsey, we are installing a lot of new boilers for our happy customers, each year. Contact us on 020 8355 0840 today, and book your service today. 


    A big question! Different methods, different materials, different costs. Obviously, a boiler replacement takes just 1 to 2 days to install and is perhaps less costly.

    It is a big confusion, people declare them as the same procedure, and call both of them a New Boiler Installation. Also, expecting to be the same price.

    For those, who might not know, there is a huge difference between a conversion and a simple new boiler replacement.

    A conversion is more complex, and basically a whole new central heating system installation.

    The conversion is higher when it comes to budget, and the work takes more days.


    A boiler installation is a huge investment, and you want to make sure that your boiler installation project goes smoothly.

    We also know that it can be hard to trust someone with such an important job. That’s why we offer our unbeatable boiler installation offers in Hornsey. This includes up to 10 years of parts and labour warranty, after the new installation, from fully insured professionals who are ready to help you out at any time.

    Our unbeatable boiler installation offers in Hornsey come with everything included, so there aren’t any hidden fees or costs after the work has been done.

    Installation, parts, labour, paperwork, registration to the gas safety and warranty.

    For more information, or if you have any questions, feel free to contact us anytime at

    radiator repair during boiler installation


    We speak louder than words when it comes to our services. With more than 15 years of experience, we’ve mastered the art of keeping your home comfortable all year long by installing a high-quality boiler at the highest standard!

    We’re not just boiler installers but also provide a range of other quality services in Hornsey.

    Our team will make sure your home is safe all year round. We always display our Gas Safe number – it’s just one more way we take safety a step ahead. 

    Affordable boiler installation

    Book a boiler installation

    Book a professional local boiler installer and enjoy top-notch boiler installation service at budget-friendly rates in North London.

    Easily request a quote for your installation project online and receive a transparent, all-inclusive price that covers both labour and materials.

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