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  • Boiler Replacement

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  • Boiler Replacement

    Updated: April 18, 2024

    boiler replacement or boiler repair

    Replacing your boiler offers numerous benefits, including saving time and money that would otherwise be spent on costly repairs. If you find yourself frequently investing in boiler repairs, it may be time to consider a replacement. Not only is a new boiler cost-effective, but it also helps save on energy bills and provides greater reliability compared to an older unit. It’s a worthwhile investment in the long run.

    At Let’s Heat, our team of skilled heat engineers is ready to provide top-notch boiler replacement services. We offer next-day and emergency boiler replacement, ensuring a swift and efficient solution to meet your heating needs. Trust us to deliver excellence and peace of mind for your home heating system.

    How do I know if I need a boiler replacement?

    Knowing whether you need a boiler replacement depends on several factors:

    Age of the Boiler: If your boiler is over 10-15 years old, it may be nearing the end of its lifespan and could benefit from a replacement.

    Frequent Repairs: If your boiler requires frequent repairs or parts replacement, it may be more cost-effective to invest in a new, more reliable unit.

    Decreased Efficiency: If you notice a significant increase in your energy bills despite regular maintenance, it could indicate that your boiler is becoming less efficient and may need replacing.

    Uneven Heating: If some rooms in your home are consistently colder than others, or if you’re experiencing inconsistent heating throughout your property, your boiler may be struggling to meet your heating needs effectively.

    Strange Noises or Odors: Unusual noises, smells, or visible signs of soot around your boiler could indicate underlying issues that may require a replacement for safety and efficiency reasons.

    Carbon Monoxide Concerns: If your boiler is emitting carbon monoxide or poses other safety risks, it’s crucial to replace it immediately to protect yourself and your family.

    Home Renovation or Expansion: If you’re planning to renovate your home or add an extension, you may need a boiler with a higher capacity to meet increased heating demands.

      Consulting with a qualified heating engineer can help you assess the condition of your boiler and determine whether replacement is necessary. They can also recommend suitable options based on your specific requirements and budget.

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      What is the cost for a new boiler replacement?

      The first thing you might think of when buying a new boiler is the possible cost. Boilers can be expensive but getting a good boiler is a good investment.

      You will of course want your boiler to be efficient and to last for years to come.

      The price for a new boiler replacement can vary, depending on many crucial elements:

      • The type of boiler you want to install in your house (e.g. combi, system or regular)
      • Moving you boiler to a different location
      • The model you aim to buy (e.g. mid-range vs. premium)
      • Converting your current boiler with another type (e.g. system to combi)
      • The extras you get (e.g. filters, a controller or smart thermostats)

      Undoubtedly, replacing your existing combi boiler with another is more cost-effective than converting from a system boiler to a combi.

      Converting your boiler entails additional time, labor, and materials, given the complexity of the process.

      The choice of boiler model also significantly influences the overall cost. At Let’s Heat, we provide top brands like Alpha, Worcester Bosch, and Viessmann, ensuring quality and reliability.

      We offer flexible payment options to our customers. Whether you prefer cash payment or a boiler finance plan, we have options to suit your needs, allowing you to pay monthly for your new boiler.

      What to consider for a boiler replacement?

      As has been noted, a new boiler replacement might not be that cheap. So it’s important to consider some key factors before making your final decision.

      The size of boiler you need (kW output)

      When discussing boiler size, we refer to its power output, measured in kilowatts (kW), not its physical dimensions.

      The higher the output, the more powerful the boiler, but it’s crucial to avoid selecting the highest output rating, as it could lead to increased energy bills. Conversely, opting for a too low output may not meet your heating demands effectively.

      To determine the appropriate output for your home, count the number of bathrooms and radiators, which provides insight into your domestic hot water and central heating needs.

      For personalized advice, it’s recommended to request a quote from a Gas Safe registered engineer. Additionally, if you have a specific brand in mind, consult their website for guidance, as many manufacturers offer resources to help you select the right boiler size for your requirements.

       Here is a table to guide you through what you need to know:

      No. of bedrooms1 bath & shower2 baths & showers
      2-bedroom house26kW29kW
      3 -bedroom house29kW35kW
      4-bedroom house29kW35kW
      5-bedroom house35kW35kW

      To point out, small homes with one bathroom and little or no space for a cylinder should consider getting a combi boiler.

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      Location of the new boiler

      Location of the new boiler:

      Opting to install your new boiler in the same location as the old one can lead to cost savings and a more straightforward installation process. However, if you choose to relocate the boiler, expect higher costs.

      Moving the boiler requires additional work and materials, including installing a new flue and rerouting pipework throughout your home. This process can be messy and more labor-intensive.

      Energy efficiency:

      Selecting an energy-efficient boiler is crucial for reducing your carbon footprint, saving money, and maintaining a comfortable home. Let’s Heat offers modern A-rated boilers that can be paired with smart thermostats to minimize energy wastage.

      According to the Energy Saving Trust, replacing your old boiler with an A-rated model and heating controls can save you approximately £340 and reduce carbon dioxide emissions by 1,500kg per year.

      Installation Time:

      The duration of replacement boiler installations varies depending on complexity. For instance, replacing a combi boiler with another combi boiler typically takes about 1 day. Conversely, converting a combi boiler to a system boiler may require around 2 days due to the additional complexity involved.

      What are the types of gas boiler replacement?

      If you’re getting a new boiler, then you should know that there are three major types:

      Combi boilers

      • Their compact design makes them perfect for homes with limited space
      • Do not require a hot water storage cylinder or a cold-water tank
      • Unsuitable for homes larger homes with multiple bathrooms and a high demand for hot water
      • Not suitable for areas with low mains water pressure

      Regular (heat only) boilers

      • Good for homes with multiple bathrooms and a high hot water demand 
      • Perfect for areas with low water pressure from the mains
      • Suitable for homes with older heating systems that may not be able to tolerate high pressure
      • They take space since they need a cistern tank
      • A tank in the attic can freeze in winter and might cause many problems if it starts leaking

      System boilers

      • Also recommend for homes with more than one bathroom and a high demand for hot water
      • Do not need a tank in the attic
      • Internal components can make installation much easier.
      • Unsuitable for areas with low water pressure 
      • Not suitable for homes with traditional heating systems that can’t tolerate high water pressure 
      • You need to consider where to put the water tank if a system boiler is replacing your combi boiler.

      Which boiler brand to choose from?

      Here are some of the boiler brands we offer:

      Viessmann Boilers:

      Viessmann boilers are renowned for their technical excellence and have received numerous awards. With German engineering and sleek designs, Viessmann dominates the European boiler market and has a stellar reputation.

      Worcester Bosch Boilers:

      Worcester Bosch is a household name in the boiler industry and has won multiple awards. It’s considered one of the best boiler brands in the UK, offering excellent guarantees, top-notch customer service, and readily available parts.

      Alpha Boilers:

      Alpha has gained popularity in recent years as a budget-friendly option for many customers. While offering affordability, Alpha boilers still maintain quality and reliability.

      When choosing a boiler brand, consider factors such as performance, reliability, warranty, and customer support to find the best fit for your needs and budget.

      Boiler Installation in

      What are the finance options for boiler replacement?

      You no longer need to stress about the hefty upfront cost of a new boiler. With our pay monthly option, you can enjoy the convenience of spreading the cost over time, interest-free and with no deposit required.

      A boiler replacement typically ranges from £1,500 to £3,000, a significant expense that may not fit into your current budget. But fear not! Our monthly payment plan allows you to tailor the repayment period to suit your financial situation, whether it’s over 2 years, 5 years, or even a decade. The flexibility of boiler finance puts you in control.

      If purchasing a new boiler outright isn’t feasible for you right now, explore our boiler finance plan to find a solution that fits your needs and budget.

      If you are eligible to use boiler financing, then you will be able to pay monthly for you boiler over the course of 2, 4, 6 or 10 years.

      To sum up:                                               

      • No deposit is needed
      • You can make overpayments with no penalty 
      • The ability to spread the cost over 2, 4, 6, or 10 years
      • Interest rates from 9.9% APR

      Can I get the next-day boiler replacement?

      You can avail next-day boiler fitting if you order before 12 pm in colder months and 2 pm in warmer months.

      We offer nationwide next-day boiler fitting across England, Wales, and Scotland, ensuring minimal downtime, even during the chilly winter months.

      Few boiler companies can match our ability to provide such prompt nationwide installation. If you require a boiler, request a quote from Let’s Heat at your earliest convenience.

      An online boiler replacement quote

      We specialize in stocking and installing top-quality boilers from renowned brands like Worcester Bosch, ensuring you receive nothing but the best when replacing your boiler.

      Our team is dedicated to assisting you in finding the ideal boiler for your home. With a diverse range of boilers to choose from, we offer credit services regulated by the Financial Conduct Authority and Gas Safe registered installation, providing you with a comprehensive solution in one convenient place.

      From the initial quote to the final installation, we’re here to guide you every step of the way, ensuring you find the perfect heating solution for your home.


      How much does it cost to fit a boiler in the UK?

      The usual cost for replacing a boiler will typically be between £1,150-£5,500. This accounts for the cost of a new boiler, which usually falls between £500-£3,000 and the average cost for installation, between £650-£2,500.

      How long does it take to replace a boiler?

      It is estimated that a boiler replacement can take between  six hours and four days, depending on a range of factors.

      How long should a boiler last?

      The average life expectancy for a boiler is between 10 and 15 years. You should make sure that your boiler is maintained properly in order to keep it functioning for as long as possible.

      How do I know if I need boiler replacement?

      Your boiler is older than 15 years.
      There is an increase in your energy bills
      The blue flame in your boiler has turned yellow
      Your boiler is leaking
      Your radiators take a longer time to heat up
      There is a bad smell coming from your boiler

      What is meant by a Condensing Boiler?

      The terms condensing and non-condensing can be confusing to people shopping for a new boiler.
      Presently, it is stated by law that new boilers must use condensing technology. In short, you don’t have to worry about getting a condensing boiler.
      Condensing is not a type of boiler, but rather technical feature. In a Condensing boiler you get a much bigger heat exchanger. They also produce additional heat from the fuel. The same fuel that would have been wasted in a non- Condensing boiler. As a result, they are more efficient.
      non-condensing boilers are less efficient by 50% since a lot of heat was lost in the combustion exhaust gases. On the other hand, new boilers would capture this heat and use it to heat water.
      condensing boilers are energy efficient by 90%. They use excess energy to heat your property. Not to mention, they are environmentally friendly and reduce your heating bill.