ATAG i40R 40kW Regular Boiler

The ATAG i40R is a highly reliable and robust regular gas boiler. 

The i40R has an efficiency rating of 94% and an ErP A rating, which means it can reduce your energy bills. 

The ATAG i40R is the most powerful regular boiler in the ATAG i range, with an output of 38.8kW for central heating. The boiler’s size makes it ideal for homes with up to 20 radiators and 1-2 bathrooms.

If your home has less than 20 radiators, check out the i15R, i18R, i24R, and i32R, as they’ll be better suited.

When buying a new or replacement regular gas boiler, it is important to remember that you will need to have a hot water storage cylinder, a cold water tank, and an expansion tank fitted alongside your heating system.

For this reason, regular boilers are not recommended for homes with limited space. The ATAG i range is also available as a combi boiler for homes with little space.