+44 161 706 1605



The Future of Warmth: Exploring Non- Condensing boilers across the UK

Are you a UK resident and have a non-condensing boiler installed before 2005? Then, it means you are qualified for a free non-condensing boiler replacement grant. We replace your old non-condensing boiler with a new free gas boiler since we specialize in the ECO4 government Boiler Scheme.
Non-condensing boilers are standard in homes across the UK, but what exactly are they? In this guide, we’ll dig deeper into the details of non condensing boilers and how they affect homes throughout the UK.

How Do Condensing and Non-Condensing Boilers Differ From One Another?

Both condensing and non-condensing boilers burn fuel, such as gas, but the primary distinction is that condensing boilers may achieve up to 99% energy efficiency. In contrast, non-condensing boilers can only reach up to 78% efficiency.
This indicates that condensing boilers lower your home’s emissions and can save you up to £310 on gas expenditures annually as a homeowner in the UK. If you’re considering upgrading your old boiler to a new one, you should know that installing condensing boilers is mandated by UK law when replacing old ones.

Eco4 Non- condensing Boiler Grant UK

A government program called the Eco4 Grant is intended to assist landlords and homeowners in making their houses more energy-efficient. The UK energy grant can be used, among other things, to swap out an inefficient non-condensing boiler for a more energy-efficient condensing boiler that was typically built before 2005. One kind of boiler that is intended to recover heat that would often be lost during combustion is a condensing boiler. This is accomplished by heating the water in the boiler with the help of a condensing heat exchanger, which absorbs heat from the flue gases

Free Boiler Scheme offers free boiler grants for UK homeowners and private tenants. We are experts in providing the finest ECO energy grants. Additionally, the bundle includes a free full-house evaluation. We provide boiler service throughout England, Scotland, and Wales, and we have a network of accredited ECO boiler installers near me.
Click here and check your eligibility for FREE boiler replacement grants in Devon, Cornwall, and Dorset.

Is my Boiler Condensing or Non-condensing?

Here are a few basic ways to help you check if your boiler is condensing.
1. Regulations require energy-efficient gas boilers installed after 2005, so if your boiler was installed after this date, it will be a condensing boiler.
2. Immersion tank or Hot Water Cylinder: The existence of an immersion tank often denotes an older non-condensing boiler.
3. Metal Flue: If your boiler has an external wall, a metal flue indicates that it is not condensing.
4. Condensate Pipe: Your boiler condenses if it has a condensate pipe directing the wastewater it produces into a drain.

Read more: Everything You Need to Know About Non-Condensing Boilers

How Do I Apply for a Grant for a Non-Condensing Boiler?

At Free Boiler Scheme, we make the process easy and straightforward. Use our free grant checker to determine if you are eligible for government assistance. A registered installer in your area who has money available from the UK government will get in touch with you after the registered installer assesses your property to confirm its eligibility. The skilled installer will work with you to arrange a convenient time for a free in-home appointment. The visiting surveyor will offer suggestions for Newport’s energy-saving initiatives. They determine whether you qualify for the Energy Company Obligation (ECO) Scheme’s boiler replacement subsidies.

Pros of Condensing Boilers

1. Cost-effective: Compared to condensing boilers, non-condensing boilers are often less expensive to buy and install.
2. Compatibility: They are a good option for retrofitting projects since they work with the current heating systems.
3. Robust Design: Non-condensing boilers are renowned for their dependability and longevity, with fewer repairs and maintenance.

Read more: The Benefits of Non-Condensing Boiler Replacement in the UK

Cons of Non-Condensing Boilers

1. Reduced Efficiency: Compared to condensing boilers, non-condensing boilers have lower energy efficiency ratings, which raises fuel consumption and energy expenses.
2. Environmental Impact: Higher carbon dioxide emissions and other pollutants result from directly discharging flue gases into the environment.
3. Limited Heat Recovery: Non-condensing boilers lose energy because they cannot recover heat from the flue gases.


If you consider doing so, the Eco4 Grant might be a fantastic chance to switch from a non-condensing to a condensing boiler. The grant may partially cover the installation costs, which would lower the price and access to the advantages of a more environmentally friendly and energy-efficient heating system.

Scroll to Top