NAHE heat exchanger is available for domestic condensing boilers in the range of 25kW and 35kW.

Versions suitable for wall hung application. Low water side pressure drop.

NAHE heat exchanger is available for small commercial condensing boilers in the range of 60kW and 80kW.
Versions suitable for wall hung or floor cascade application. Low water side pressure drop.

Nahe heat exchanger is available for commercial condensing 
boilers in the range of 100kW, 120kW and 150kW.
Versions suitable for wall hung application or 
floor cascade application. Low water side pressure drop.