• Blog
  • Boiler Installation Time

  • Blog
  • Boiler Installation Time

    Updated: February 20, 2024

    How long does a new boiler take to install?

    A new boiler installation can take between 1-3 days depending on the complexity of the work involved. For more information on boiler installation time check our guide.

    Well if you are looking to find out how long it takes for a new boiler installation then you have come to the right place

    When you are considering getting a new boiler, and you start looking into various boilers and boiler installation services, one of the main questions you will have is “How long does a new boiler take to install?”

    Online guide

    In our online guide, we will inform you of the average timescales that you should expect for the various different types of boiler installations that you can have and this should help you to arrange your time accordingly.

    Read Also : Different Types Of Reliable Boiler Systems Explained

    How long should my boiler installation take Install?

    New boiler installation services usually take between 1-3 days depending on the complexity of the job.

    You should also keep a few more extra hours spare for your survey appointment, which will take place prior to your installation.

    Survey Appointments

    In the survey appointment, a surveyor will discuss your property and heating needs in order to ensure that a suitable boiler is selected and installed.  You can also go through this process via our online quote service.

    Let’s Heat offer two types of surveys to assess your requirements:

    Online Survey

    This is a quick and easy option for homeowners who prefer to have their survey conducted digitally online. All you have to do is complete the online survey and we will guide you through the survey process, assessing your current system and your heating and hot water requirements.

    In-Home Survey

    During the survey appointment, a surveyor will visit your home and examine your current heating system, including the boiler, gas meter and bathrooms etc.

    They’ll also ask you about your requirements for heating and hot water.


    At the end of each survey you will be given a quote for your new boiler installation.

    Arrange an in person appointment.

    Boiler Installation Time
    Boiler Installation Time 5

    What can affect your boiler installation time?

    The complexity of the installation

    The complexity of your boiler installation can affect the time it takes to install your new boiler and thus the amount of labour required, which also has an impact on the cost.

    There are three main ways of installing your new boiler and each has a different level of complexity.

    Read Also : 10 Important Tips Before Buying A New Boiler In 2024

    The different types of Boiler Installations can impact the boiler installations time:

    1. Straight Swap
    2. Boiler Relocation
    3. System Upgrade

    Please find more details about each type of installation as well as an estimate of the time each type of installation will take:

    Straight swap (same location)!

    Details: A straight swap installation, also known as a like-for-like swap, is a type of boiler installation that involves replacing your current system with a boiler of the same type, in the same place.

    Time: This is generally the quickest type of boiler installation as it requires very little change and can often be completed in just one day.

    See boiler prices for the costs of your new boiler and boiler installation.

    Boiler relocation

    Details: A boiler relocation installation requires moving your new boiler to a different location within your property and this could slightly prolong the installation process. Your boiler engineer may have to make changes to the existing pipework or they may have to cap the current pipework and install new elements to the new location.

    Time: This adjustment could add another day on to the standard one day installation making it up to 2 days of installation*.

    *It’s worth noting that the further away you choose to install your new boiler, the longer the installation is likely to take which will also have an impact on your price.

    See boiler prices for the costs of your new boiler and boiler installation. <<link>>

    Read Also : Everything You Need To Know About Boilers

    System upgrade

    Details: System upgrade installations are where homeowners choose to change the type of boiler they have installed in the property.

    For example, switching from a heat only boiler to a combi boiler would be considered a system upgrade. Combi boilers have become the most popular boiler type in the UK, so many people choose to upgrade to this type of system from the older heat only boiler variety.

    Time: A system upgrade could make your installation take up to 3 days* or more depending on the complexity of the job.

    *This may seem like a long process, but the benefits of upgrading to a more efficient system can often make it worthwhile.

    See boiler prices for the costs of your new boiler and boiler installation.

    Boiler Installation Time
    Boiler Installation Time 6

    Why choosing the right boiler is important?

    Choosing a suitable boiler for your home can provide you with all the heating and hot water that your family or property require.

    You could also save money on your annual energy bills and reduce your carbon footprint by using a more efficient system for your requirements.

    Other factors to consider that can impact installation times…

    Installing smart thermostats:

    Smart Thermostats are becoming increasingly popular due to their innovative functions and ease of use.

    These tech gadgets and thermostats allow you to have greater control of your heating.

    Control from anywhere

    They also allow you to have that control from anywhere,  using your smartphone, tablet or other device to put you in control.

    Some smart thermostats also have the ability to learn your central heating habits and programme themselves to follow your usual routine.

    Demo Time

    As these tech gadget become more complex with ever increasing features then demonstrating this can add time to your installation.

    Having a system Powerflush:

    A system powerflush is a deep clean that is designed to get rid of any sludge, debris or rust out of your central heating system.

    A powerflush helps to ensure that your new system functions as efficiently as possible.

    This involves sending a chemically infused liquid at a high velocity through your radiators and pipes.

    This highly-effective process can take up to 5 hours to complete, which can obviously add time to your installation.

    Read Also : How Do Combi Boilers Work?

    Upgrading your gas mains:

    Upgrading your gas mains can sometimes be required if you have an older system.  Often the pipework may not be suitable for the new boiler you want installed so it will need to be replaced*.

    *If the size of your gas installation pipework doesn’t meet the requirements for your new boiler, it has to be changed.

    Completing this could take your engineer a few extra hours depending on the complexity of the job, thus adding time to your installation.

    Want a quote – get a quote online now!

    What to do if you want to proceed?

    The Let’s Heat boiler installation & repair team are all fully qualified to the highest standards and take pride in producing exemplary work standards which include completing all boiler installation requirements no matter what time of day this is required!

    Our team of high-quality professional engineers have an extremely high 4.9 out of 5, Trustpilot score given by our previous happy customers and we are fully accredited by Gas Safe and Corgi registered, as well as FCA approved for all of our financial transactions.

    If you want to proceed with a quote from us, please click the link!

    Read Also: Best Condensing Boilers | Combi Boiler Models

    More about Let’s Heat

    In addition to boiler installation we also provide other plumbing and heating services:

    Boiler Installation Time
    Boiler Installation Time 7

    Can I finance my new boiler?

    Buying a new boiler and having a boiler installation or a heat pump, is an investment.

    However, it can be expensive, especially paying for it all in one hit.

    If you haven’t got the money on hand for the boiler and installation services that you require, you can get the job done on a finance package that is FCA-approved.

    We can also offer a number of split payment options for you to consider.

    Boiler Replacement Payment Options

    For new boiler installation, you can pay by card, pay zero deposit, and pay monthly over 2 to 10-years or take our a finance package.

    So why Let’s Heat for your combi boiler replacement?

    A. Let’s Heat Are Quality & Accredited Boiler Installers

    Let’s Heat professional engineers and emergency plumbers provide a professional and reliable emergency plumbing and heating service.

    Our Coverage

    Our service includes solutions like; Boiler Installation, Heat Pump Installation, Pump & Boiler Repair & System Maintenance.

    Thieve services are provided to homes and businesses in Cardiff and the surrounding CF postcode areas of South Wales.

    We also cover the rest of Wales and all of England (see below).

    High Standards – 365 & 24/7

    The installation & repair team are all fully qualified to the highest standards and take pride in producing exemplary work standards.

    This includes completing all boiler installation requirements no matter what time or day this is required!

    Qualifications & Accreditations:

    Our team of high-quality professional engineers has an extremely high 4.9 out of 5, Trustpilot score given by our previous happy customers.

    We are fully accredited by Gas Safe and Corgi registered, as well as FCA approved for all of our financial transactions.


    All of our staff at Let’s Heat are experts in their field and have gathered many years of experience.

    This has been obtained whilst working on a wide selection and variety of emergency plumbing and heating solutions and services throughout Cardiff, Wales & the UK.

    B. Because we care…

    Are you still a little confused about where to start or who to use?

    Our easy-to-use online questionnaire will guide you through everything that you, and we, need to know. This will ensure that you have the correct solution for your needs.

    We will also ensure that you are completely satisfied with the solution offered prior to completing any works.

    Why else?

    Because of additional benefits like;

    • Coverage of all of England & Wales.
    • Reliable, professional, and trustworthy.
    • High Trustpilot score of 4.9 out of 5.
    • Gas Safe Accredited (corgi registered).
    • Very competitive Prices.
    • Finance is FCA accredited.
    • Well keep your house clean and tidy during any work because we care.
    • Floor protection used on each job.
    • All rubbish always disposed of correctly.
    • The Service comes with a 12-month snag guarantee.

    Get an Online Quote

    You can research your boiler replacement requirements and choose your new boiler and the boiler installation online, without leaving the house…

    If you need a new combi boiler or heat pump and installation, please do not hesitate to reach out to our award-winning heating engineers team because they have all of the information that you will need.

    When you’re ready for a new boiler or heat pump then you can get everything from us.

    This includes services like; the full boiler supply, the full boiler fit and regular maintenance.

    All from Let’s Heat in Wales.

    Read Also : System & Best Boilers In Uk Of 2024

    Can I get Next Day Service?

    We replace & install boilers and heat pumps nationwide and include next-day installation.  This is  on orders placed before 2pm in Spring/Summer or 12pm in Autumn/Winter*.

    *This needs to be slightly earlier in the autumn/winter because things are a bit busier during these months.

    Get a quote!

    All our staff are experienced and knowledgeable in all aspects of heating installation services and repair/maintenance.

    If you have any further questions please feel free to contact us.

    Alternatively please take a look at our FAQS or blog, should you have any other questions.

    Get an online quote

    Full range of heating & plumbing services provided by Let’s Heat:

    • Boiler Repairs & Installations
    • Boiler Supply & Fit
    • Financing Your Boiler
    • Emergency Boiler Repairs & Installations
    • Emergency Boiler Supply & Fit
    • Plumbing Repairs
    • Bathroom Plumbing
    • Kitchen Plumbing
    • Emergency Plumbing Repairs
    • Bathroom Plumbing in Emergencies
    • Emergency Kitchen Plumbing
    • General Plumbing Services
    • Emergency Plumbing Services
    • Emergency Gas & Heating Engineer

    Areas covered by our heating engineer services:

    The Let’s Heat engineers cover all of Wales & England


    Let’s Heat provide Heat Pump installations throughout Wales.

    This includes areas like; South East Wales, South Wales, South West Wales, Mid Wales, East Wales, West Wales, and North Wales.

    Welsh Cities:

    This includes all of the Welsh cities like; Cardiff, Newport, Swansea, and all other towns and cities in Wales.


    Let’s Heat provide Heat Pump installations  throughout England.

    This includes areas like; South West England, South East England, East Midlands, West Midlands, North West England, and North East England.

    English Cities:

    We provide our plumbing & heating services to cities all offer England like; London, Reading, Southampton, Portsmouth, Bristol, Exeter & Plymouth in the South.

    As well as cities like; Gloucester, Swindon, Oxford, Leicester, Nottingham, Derby, Birmingham, Worcester, Wolverhampton, Walsall in the Midlands.

    And cities like; Liverpool, Manchester, Leeds, York, Sheffield, Newcastle, Sunderland and Middlesbrough in the North.

    Any more questions?

    If you have any further questions about combi boilers, other boilers, or anything else, please see our FAQ Page because you might find the answers there.

    Alternatively, you could try our News Blog for lots of news and article on all aspects of plumbing and heating.

    Check out our Gas Safe Registration and if you want to see our near 5 star Trustpilot rating.


    How long does it take to replace an existing boiler?

    The usual answer is around 1 to 2 days for moving a boiler or to replace a boiler.

    Can I install my own boiler?

    You need to be on the Gas Safe Register to install a boiler.

    What happens when a new boiler is fitted?

    The engineer may do a simple chemical flush or a power flush over several hours for better cleaning. Then, they will adjust the pipework. And finally, your engineer will install the boiler at the location you have agreed on.

    Should I turn off water when installing new boiler?

    If you are replacing a old style system with a combi boiler, the engineer will spend a lot of time draining the system but this will not require your water to be turned off. Neither would a combi boiler installation require your water to be turned off.

    Is it better to have a boiler upstairs or downstairs?

    It’s advisable to have your boiler system downstairs to reduce noise disturbance during the night.