Atag System Boilers

When only the best will do

Selected Atag Heating Technology Partner

Atag System Boilers: The Only Boiler Built to Last a Lifetime

Atag system boilers are by far the best made boilers we have ever seen; designed and built in the Netherlands to the same exacting standards as their commercial boilers using the most advanced engineering techniques. Unlike other system boiler manufacturers who design and build their system boilers using a 10 year life cycle white goods mentality, Atag build system boilers using a commercial plant model and that are designed & built to have a 20+ years life cycle.

All Atag combi boilers are designed and manufactured using top quality components, guaranteeing you a combi boiler that has market-leading performance, reliability and efficiency.

Atag manufacture a range of system boilers suitable for homes of all sizes and all budgets. With manufacturer’s warranties of up to 14 years, it’s easy to find the perfect Atag system boiler for your property.

For your peace of mind we are approved & accredited by Atag to install their entire range of boilers including system boilers and combi boilers.

All Atag combi boilers are designed and manufactured using top quality components, guaranteeing you a combi boiler that has market-leading performance, reliability and efficiency.

Atag manufacture a range of system boilers suitable for homes of all sizes and all budgets. With manufacturer’s warranties of up to 14 years, it’s easy to find the perfect Atag system boiler for your property.

For your peace of mind we are approved & accredited by Atag to install their entire range of boilers including system boilers and combi boilers.
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Atag System Boilers - iS System Boilers

Europe’s Most Energy Efficient System Boilers

All Atag boilers have been designed to exceed European energy efficiency legislation, often more stringent than in the UK. Atag boilers are the most energy efficient boilers available in Europe & have the lowest running costs of any combi boiler.

With an ATAG iS system boiler you’ll be choosing one of the most energy efficient boilers in Europe. It is not only easy to operate, but also has an in-built ErP pump which controls the heat given out by the boiler to increase energy efficiency and help lower energy bills.

The innovative and patented Economiser Plus feature harnesses residual heat left in the waste flue gases when the boiler is used for hot water, capturing the waste energy and using it to pre-heat the mains water to improve hot water production efficiency, saving both heat and money in the process.

Atag boilers have been awarded the prestigious Best Boiler Award in the Netherlands in multiple years & have the highest score of any boiler manufacturer on Trust Pilot, the independent review site.

Atag iS system boilers are available in the following sizes:

  • 15kW suitable for 1 or 2 bedroom properties
  • 18kW suitable for 2 to 3 bedroom properties
  • 24kW suitable for 3 to 4 bedrooms properties
  • 32kW suitable for 4 to 5 bedroom properties
  • 40kW suitable for the largest of properties

With an ATAG iS system boiler you’ll be choosing one of the most energy efficient boilers in Europe. It is not only easy to operate, but also has an in-built ErP pump which controls the heat given out by the boiler to increase energy efficiency and help lower energy bills.

The innovative and patented Economiser Plus feature harnesses residual heat left in the waste flue gases when the boiler is used for hot water, capturing the waste energy and using it to pre-heat the mains water to improve hot water production efficiency, saving both heat and money in the process.

Atag boilers have been awarded the prestigious Best Boiler Award in the Netherlands in multiple years & have the highest score of any boiler manufacturer on Trust Pilot, the independent review site.

Atag iS system boilers are available in the following sizes:

  • 15kW suitable for 1 or 2 bedroom properties
  • 18kW suitable for 2 to 3 bedroom properties
  • 24kW suitable for 3 to 4 bedrooms properties
  • 32kW suitable for 4 to 5 bedroom properties
  • 40kW suitable for the largest of properties
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Why Choose Us?

99% Customer Satisfaction

You can rest assured that you are making the right choice when choosing our company to install your new boiler because we are one of only a few companies in the region that have an independently verified customer satisfaction score in excess of 99%.

Lowest Prices in the UK

We buy and install more boilers than any other independent heating company in the region. This has enabled us to negotiate exclusively low prices with the manufacturers, which we share with all our customers.

COVID-Secure Contractor

We have carried out a COVID-19 risk assessment to keep our customers and engineers safe. We have comprehensive PPE, cleaning, handwashing and hygiene procedures in place, and will take all reasonable steps to maintain social distancing at all times. 

Price-Match Promise

We guarantee we will not be beaten on price. In the unlikely event that you receive a lower quote from any other Gas Safe registered installer, we will match their quote and provide you with your first year service free of charge.

COVID-Secure Contractor

We have carried out a COVID-19 risk assessment to keep our customers and engineers safe. We have comprehensive PPE, cleaning, handwashing and hygiene procedures in place, and will take all reasonable steps to maintain social distancing at all times. 

Price-Match Promise

We guarantee we will not be beaten on price. In the unlikely event that you receive a lower quote from any other Gas Safe registered installer, we will match their quote and provide you with your first year service free of charge.