ATAG iS System Boiler

System boilers are traditionally fitted with an unvented hot cylinder which provides an increased capacity of hot water. The fact that the pump and controls are contained within the boiler casing counts towards a simple and space saving solution.

What makes our system boilers different, though, is the in-built ErP pump. This controls the heat given out by the boiler, ensuring your boiler is as energy efficient as possible, saving you money year-on-year

Homeowners seeking even more efficiency can combine an iS system boiler with one of our iSteel hot water cylinders.

iS System Boiler range

iS40
ATAG iS system boilers are available in various outputs from 15 kW to 40 kW and are suitable for most property sizes regardless of the hot water demand.

iS32
ATAG iS system boilers are available in various outputs from 15 kW to 40 kW and are suitable for most property sizes regardless of the hot water demand.

iS24
ATAG iS system boilers are available in various outputs from 15 kW to 40 kW and are suitable for most property sizes regardless of the hot water demand.

iS18
ATAG iS system boilers are available in various outputs from 15 kW to 40 kW and are suitable for most property sizes regardless of the hot water demand.

Key Features

• Compact dimensions (mm) h700 X w440 X d355
• A 275 mm (deep) model is available to fit inside kitchen cupboards
• Five models available – 15kW, 18kW, 24kW, 32kW and 40kW
• 10 year warranty including all parts and labour
• Powered by the unique iCon heat exchanger with a lifetime replacement guarantee
• Achieves ErP ‘A’ rating for heating
• Ideal for homes where the heating system includes a hot water storage cylinder
• Can be used with the ATAG ONE smart controller and 3 port valve kit
• Built in frost protection
• Quiet in operation due to bottom up modulation
• Completely user friendly

Finance options to suit you

We appreciate that it can be difficult to commit to paying a lump sum as a whole.

Thanks to innovative finance options and a very real commitment to Customer Service we are able to work with you to provide the financial model which best suits you.

• Flexible low-cost finance
• A choice of payment options to suit you
• No deposit or up-front payment required

We offer finance through Worcester Bosch, backed by Hitachi Capital (UK). This means you can choose to spread the cost of your new boiler over three to ten years. We have various options available to suit your needs, including accelerated payment options. Please feel free to contact us to discuss in more detail.

Finance Examples

Subject to credit approval, finance will be provided by Hitachi Capital (UK) PLC. Hitachi Capital (UK) PLC is authorised and regulated by the Financial Conduct Authority.

The Atag boiler range at APG Boilers on Finance

ATAG has been designing and manufacturing boilers for nearly 70 years. In that time they have set the highest standards for energy efficiency and engineering excellence across the world.

What sets ATAG apart is the fact that they can operate in so many countries across the world, with each having their own strict engineering standards of course. They have combined all these requirements that today brings you there ‘i’ range of ATAG boilers. They’re have been built to last using the highest quality stainless steel and brass components.