System Boilers in the UK for (2025)

The most popular ATAG System Boilers

Ideal Boilers.So you’re looking to upgrade your heating system and wondering which ATAG system boilers are the most popular in the UK for 2025. You’re not alone – many homeowners are looking for reliable and efficient solutions to keep their homes warm and snug. The good news is there are several great options to choose from, each one suited to different needs and preferences. But which ones are the most popular and what makes them stand out from the rest? Let’s take a look at the top ATAG system boilers for 2025.

Top ATAG System Boilers

When looking for a reliable and efficient heating solution you’ll want to look at ATAG’s high spec system boilers, the XL70, XL110, Q25SR, Q38SR, Q51SR and Q60SR models which have a range of outputs to suit different size properties and heating loads.

These ATAG system boilers are designed to be energy efficient, so you’ll save on your energy bills and carbon footprint. With their high build quality and advanced technology they’re built to last so you’ll get a consistent and reliable heating performance.

As an installer you’ll love the installation and maintenance of these boilers. Their compact design and flexibility means they’re suitable for all types of properties.

Plus ATAG’s energy efficiency means you can be sure your customers will get a great heating solution for their needs. With ATAG’s reputation for quality and reliability you can recommend their system boilers to your customers knowing they’ll get a premium heating experience.

XL Series Boilers

The XL Series boilers, XL70, XL110 and XL140 offer high performance and power outputs to tackle the toughest heating requirements. These high spec boilers are designed for large homes, commercial properties or properties with high hot water demands.

The XL110 ATAG system boiler has a 107kW output so is ideal for larger properties or multiple bathroom properties. The XL70 ATAG system boiler has a 68.5kW output so is suitable for smaller to medium sized homes. The XL140 ATAG system boiler has a 136kW output so is perfect for large commercial properties or properties with extremely high hot water demands.Ideal Boilers

These boilers are built to last and to be reliable so you get a consistent and efficient heating performance. With their high spec capabilities you can trust the XL Series boilers to keep your home or building warm and snug even on the coldest of days.Ideal Boilers

Q Series System Boilers

The Q Series system boilers, Q25SR, Q38SR, Q51SR and Q60SR have a range of outputs to suit different heating loads from small homes to larger properties.

These boilers are energy efficient and reliable.

If you’re looking for a system boiler for smaller homes the Q25SR with 25kW output might be the one.

For medium sized properties the Q38SR with 38kW output might be the answer.

For larger properties the Q51SR with 51kW output or the Q60SR with 60kW output might be more suitable.

Note ATAG also have combi boiler options like the Q25CR which has a similar 25kW output to the Q25SR system boiler.

The Q25CR is a combi boiler so it provides heating and hot water on demand.

Whatever your heating needs the Q Series system boilers are worth a look.

With their range of outputs and energy efficiency they’re a popular choice for UK homeowners.

Most Efficient ATAG Boilers

Among ATAG’s boilers some are more efficient than others and you’re probably looking for one that will save you money on your bills.

As you’re looking for the most efficient ATAG boilers you’ll want to look at the Q Series System Boilers. Specifically the Q25SR, Q38SR and Q51SR are designed to perform high and low.

These boilers have impressive ErP ratings so you’ll get lower energy bills and a smaller carbon footprint.

ATAG’s system boilers are hard to beat when it comes to energy efficiency.

The Q60SR for example has a 94% efficiency rating so is great if you want to reduce your bills. And the XL70 and XL110 also have high energy efficiency with ErP ratings to save you money on your bills.