• Blog
  • Boiler Replacement

  • Blog
  • Boiler Replacement

    Updated: March 11, 2023

    boiler replacement or boiler repair

    Boiler replacement has several benefits to say the least. When you replace your boiler with a new one, you will be saving both time and money. Money that, otherwise, will be spent on costly repairs.

    You might be confused as whether to get a boiler replacement or boiler repair. If you are spending a lot of money on repairing you boiler, then it might be time to get boiler replacement and save yourself both trouble and money. A new boiler will be cost-effective and will help you save money on energy bills. What is more, it will also be more reliable than an old boiler. So it is an investment which is worth making.

    If you want to replace your boiler, then look no further. Here at Let’s Heat, we have an excellent staff of heat engineers who are always on the go to carry out the job to the highest of standards. We also offer next day replacement and emergency boiler replacement.

    How do I know if I need a boiler replacement?

    There are some factors which can help you determine if you need a boiler replacement or not.

    You boiler is making strange noises

    It is recommended to have your boiler checked by a professional if it is making strange noises to watch out for any probable issues. A strange noise would usually suggest that a part is failing and might require replacing. It is better to get such issues fixed immediately rather than waiting too long. Otherwise, your whole system might break down and you will be without heating.

    You boiler is leaking

    The place, where the leaking is taking place, can determine the seriousness of the leaking. For example, if your boiler is leaking from the inside, that might suggest that one of the part has stopped working and might need to be replaced. If the price of the repair is high, it might be more economical to just get a new boiler with a 10 year warranty.

    Regular thermostat issues

    This might sound too simple but have you tired turning it off and on again? This can allow your thermostat to reconnect itself to the boiler and will get you up to running again. If this does not work, then try checking the troubleshooting guide that usually comes with the thermostat. Follow what advices are provided in this guide.

    Low water pressure

    The first step will be is to check all the pipes and the radiators for small leaks which might be the cause of low water pressure. If such leak is found, then fixing it would be relatively manageable to carry out. However, if no such leak is found, then a bigger problem might be taking place. A problem which might require the services of a professional.

    If you have any of these issues, then you have a serious problem with you boiler. Any delay in fixing or replacing your boiler might result in the complete shutdown of your system. If you have had your boiler for more than 10 years, then it might be time to think of boiler replacement. An investment in a new boiler might be worth the money as it will be more efficient and thus saving you money on heating bills.

    Your boiler is too expensive to repair

    In some cases, broken boilers are very costly to repair. Especially if you need to replace or repair parts like the PCB or the heat exchanger. In short, it might be more cost-effective for you to get a new boiler instead.

    Your boiler is old and inefficient 

    Boilers that are more than 10 years old are G-rated. They have an efficiency rating of around 70%. As a result, for every £1 you spend, 30p is wholly wasted. Modern boilers, on the other hand, are 90% efficient. 

    Moving your boiler 

    If you want to change the location of your boiler, then it makes since to get a new boilers installed with a brand new warranty, best replacement boiler.

    Your boiler can’t meet hot water demands

    It might be time to replace your boiler with a new model that has a higher power output if your current boiler is unable to meet your hot water demands. 

    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)

    Without a doubt, replacing you current combi boiler with another is cheaper than converting your system boiler to a combi boiler.

    Converting your boiler requires more time, more labour and more materials. Not to mention how complex the whole process is.

    Which model you pick also plays a huge role in determining the cost for a new boiler. Here at Let’s Heat, we offer some of the best brands in the boiler industry such as Alpha, Worcester Bosch and Viessmann.

    With Let’s Heat you can choose from the multiple ways of payment we offer to our customers. You can pay in cash or get a boiler finance plan that will enable 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 we talk about boiler size, we do not mean its dimensions, but rather its power output. The unit of measurement, used for boilers, is the kilowatt (kW).

    To clarify, the higher the output of your boiler, the more powerful it will be. Nonetheless, it’s never a great idea to get the boiler with the highest output rating. A too high output rating would increase your energy bills. And a too low output rating will not meet your demand.

    Through counting the number of bathrooms and radiators in your home, you can find the most appropriate output rating for you. This information can also help you have an idea of the level of demand for domestic hot water and central heating.

    With this purpose in mind, we advise you to get a quote from a Gas Safe registered engineer. If you have a brand in mind, then you should check their website and guidelines. A lot of manufacturers, nowadays, offer advice on their websites.

     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.

    Location of the new boiler

    It will cost you less if you install your new boiler in the same location as the old. Moreover, it will make the job more straightforward.

    On the other hand, you can move your new boiler to a different location if you want to. But it goes without saying that you will have to pay more. 

    The process of moving your boiler requires more work and materials. You will need a new flue installed and new pipework re-routing through your home. This process can be very messy though. 

    Energy efficiency 

    If you want to reduce your carbon footprint, save some money and keep your house warm and fuzzy, then it’s important to get an energy-efficient boiler. 

    At Let’s Heat, we offer modern A-rated boilers that can be bought with a smart thermostat in order to reduce energy wastage.

    You can save about £340 and 1,500kg of carbon dioxide a year if you replace your old boiler with an A-rated boiler and set of heating controls according to the Energy Saving Trust.

    Installation Time 

    Some replacement boiler installation takes longer than other. Some are just more complicated than others.

    For instance, replacing your combi boiler with another combi boiler might take around 1 day. 

    Oh the other hand, converting, for example, a combi boiler to a system boiler is probably going to take 2 days.

    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?

    We offer a variety of different boilers from different brands. You can take a look at some of the types we offer down below:

    Viessmann Boilers 

    Viessmann boilers have won plenty of awards. They have a reputation for being technically superb. 

    With its superb German engineering and simple, crisp designs, it has a 5-star reputation. Needless to say that it dominates the European boiler market.

    Worcester Bosch Boilers

    When it comes to boiler, then rest assured that Worcester Bosch is a household name. It is an award-winning boiler.

    It is the best boiler brand in the UK thanks to their excellent guarantee offer, customer service, and easily sourced parts.

    Alpha Boilers

    Over the last few years, Alpha has increased its share of the market due to it being a budget-option for many customers.

    It is a fantastic option for people who are looking for a reliable yet affordable boiler.

    What are the finance options for boiler replacement?

    Pay monthly for your new boiler. No deposit and interest free.

    Getting a new boiler can be a big investment. Paying for it in one single large payment can leave a huge impact on your budget. However, this is something that you don’t have to worry about. Nowadays, you can pay monthly for your brand new boiler with 0% interest and no deposit needed.

    A boiler replacement can cost a huge amount of money. It can cost you between £1,500 to £3,000. It’s perfectly understandable if you don’t have that amount on hand right now.

    But worry not! You can easily get a monthly plan to pay for your new boiler. This plan will enable you to spread the cost over a period of time that is suitable for your budget. You can pay for it in 2 years, 5 years or even in a decade. The choice is yours. And here lies the beauty of boiler finance.

    If you find yourself unable to buy a new boiler outright, then you should consider a boiler finance plan.

    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?

    Yes, you can if you order your boiler before 12 pm during the colder months, and 2 pm in the warmer months.

    We provide next-day boiler fitting nationwide in England, Wales and Scotland. So you do not have to be without heating for long, even in the cold months of winter.

    Not many boiler companies can install a boiler at such short notice nationwide. If you need a boiler, get a quote from Let’s Heat as soon as possible.

    An online boiler replacement quote

    We stock and install a variety of quality boilers from some of the world’s leading brands, such as Worcester Bosch. What is more, we make sure that you get the best when it comes to replacing your boiler.

    We can help you get the best boiler for your home. Moreover, we have a wide range of boilers that you can choose from. We offer you credit services regulated by the Financial Conduct Authority as well as Gas Safe registered installation. As a result, you can get everything you need in just one place.

    Starting from the initial quote to the boiler installation, we can help you get the perfect 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.