If you’re considering replacing your boiler with a new model, you may be concerned about the large upfront costs associated with the initial purchase. However, it’s possible that this purchase will save you money in the long run. Read more to see just how much money a new boiler can save you.

Will a new boiler save me money?

New boilers are more energy-efficient, leading to reduced energy bills. A new A+ grade condensing boiler, for example, could save you 30-40% on your energy bills. The efficiency of a boiler is crucial, with A-rated boilers being over 90% efficient compared to G-rated boilers at around 65% efficiency. 

The potential savings from a new boiler depend on factors like the age and efficiency of your current boiler, the type of fuel used, and the size of your property. We’ll explore these cost-saving aspects in more detail below. 

How much money will a new boiler save me?

Replacing your boiler with a new, more energy-efficient one in the UK can save you money, typically around 30-40% on your current energy bills. The amount you save depends on factors like the size of your property, energy usage, insulation, and the efficiency of the new boiler you choose. Overall, investing in a new boiler can lead to substantial savings in the long term by reducing energy costs and improving efficiency.

How a new boiler can save you money

There are three main areas where boilers can save you money in the long run. Let’s explore these in more detail below. 

Higher efficiency ratings

Modern boilers are more energy-efficient compared to older models due to several key advancements. Here’s how this increased efficiency leads to cost savings:

  1. Improved Technology: Newer boilers incorporate modernised components and advanced technology that enhance efficiency. For example, some models feature modulating burner systems that adjust fuel usage based on heating demand, reducing energy waste.
  1. Higher Energy Efficiency Ratings: Newer boilers typically have higher Annual Fuel Efficiency (AFUE) ratings compared to older models. This means they are built to use less fuel and produce fewer emissions, making them more cost-effective and environmentally friendly.
  1. Better Insulation: New boilers come with improved insulation materials, such as double-insulated walls, which help retain heat inside the system. This reduces energy loss, ensuring the boiler runs efficiently throughout the year and lowers energy costs.
  1. Condensing Technology: Modern boilers often utilise condensing technology, which captures heat from flue gas and reuses it for additional heating purposes. This results in more heat produced from the same amount of fuel, leading to significant savings on monthly bills.
  1. Smart Technology: Some newer boiler models are equipped with smart technology, allowing remote control and monitoring. This helps optimise energy usage, adjust settings based on weather forecasts, and identify any system issues promptly, contributing to cost savings.

Reduced Repair and Maintenance Costs

Modern boilers are designed with advanced technology and components that enhance their performance, making them less prone to breakdowns and malfunctions. By operating more efficiently, newer boilers experience less wear and tear, leading to fewer repairs and maintenance issues over time. Additionally, regular maintenance of these newer models helps identify and address minor problems before they escalate into costly repairs or system failures. 

Overall, the increased efficiency and durability of newer boilers contribute to lower repair and maintenance costs, making them a cost-effective choice for homeowners in the long term.

Government Incentives and Rebates

The UK government offers incentives and grants for installing newer, more efficient boilers in homes to promote energy efficiency and reduce carbon emissions. Through schemes like the Boiler Upgrade Scheme, homeowners can receive financial support to cover part of the cost of replacing fossil fuel heating systems with more sustainable options like heat pumps or biomass boilers. These grants can amount to £7,500 towards air source heat pumps, ground source heat pumps, or £5,000 towards a biomass boiler. 

Additionally, there are initiatives to support low-income households in accessing new boilers for improved energy efficiency, highlighting the government’s commitment to promoting greener heating solutions and reducing energy costs for homeowners. You can find out more about these government schemes by asking a professional gas-safe engineer or local boiler supplier. 

Factors to Consider Before Investing in a New Boiler

Although getting a new boiler may be a good idea and ultimately save you some money, you must consider several factors before making the final decision to replace your boiler with a new one. Two of the main considerations are as follows: 

Upfront cost vs. long-term savings analysis

Conducting an upfront cost vs. long-term savings analysis before deciding to buy a new boiler is crucial for making an informed decision. This analysis helps you understand the financial implications of investing in a new boiler. By comparing the initial cost of purchasing and installing a new boiler with the potential long-term savings on energy bills and maintenance costs, you can determine the payback period and overall cost-effectiveness of the investment. 

While the upfront cost may seem significant, especially for high-efficiency models, evaluating the long-term savings can demonstrate how quickly the new boiler will pay for itself through reduced energy consumption and lower maintenance expenses. Therefore, conducting this analysis will help to ensure that investing in a new boiler aligns with your financial goals and leads to cost savings over time.

Professional assessment of heating needs and boiler suitability

Professional assessments are essential to ensure safe and efficient operation while maximising energy efficiency. Professional assessments help determine the right size and type of boiler for your specific requirements, taking into account factors like property size, insulation, hot water demand, and existing heating system. This ensures that the chosen boiler is suitable for your needs and optimises energy usage, leading to cost savings in the long run.

In the UK, professional engineers, technicians, or companies specialising in boiler assessments and heating systems can conduct these evaluations. Plumbing companies like SD Plumbing & Heating offer services for assessing boiler suitability, conducting risk assessments, and providing maintenance recommendations to ensure safe and efficient heating systems. These professionals have the expertise to evaluate your heating requirements accurately and recommend the most suitable boiler options tailored to your specific needs.


There are several benefits to replacing your boiler with a new, more energy-efficient model in the UK. Modern boilers can save you money by reducing energy bills, considering the factors influencing the amount of savings. You must take the time to conduct a cost vs. savings analysis before making a decision and seek the help of professionals during this process. 

Additionally, newer boilers lower repair and maintenance costs due to their improved efficiency and reliability, ultimately saving you more money. If you are wondering about financing options, there are incentives and grants offered by the UK government for installing efficient heating systems in your home. 

If you are looking for trustworthy professionals for installing a new boiler, then get in touch with SD Plumbing & Heating today. Our years of experience in the boiler and plumbing industry make us qualified to help you make informed decisions about the new boilers on the market. We’d be happy to help you source a new boiler for your home and inform you about financing options including government grants. Get in touch with a friendly member of our team today and we’d be happy to assist you with any questions you may have.