ATAG iSteel Twin Coil Cylinders

The iSteel twin coil cylinders range from 150 to 300 litres. They work with the ATAG iS system and iR regular boilers.

Key features and benefits

  • Rapid heat up recovery
  • Compatible with solar systems
  • A 25 year warranty
  • Compliant with part ‘L’ of the building regulations – conservation of fuel and power
  • Rated ‘B’ for energy efficiency
  • A 2 year warranty on cylinder components
1

Boilers

ATAG boilers are efficient, reliable and easy to install.

Find out more
2

Not sure which boiler you need?

Our boiler finder will help you to choose the perfect boiler for your home.

Find your perfect boiler
3

Controllers

We have a range of controllers to suit different requirements

View all Controllers

Installers that you can depend on

From design through to installation and after-care service, our ATAG selected gas-safe installers are on hand to offer you excellent advice and the best solution possible that suits your needs.

Find an Installer