ATLANTIC Alfea Extensa DUO AI R32 air-to-water heat pump Models 5, 6, 8 and 10 kW, with built-in 190 l hot water boiler. Back to: ATLANTIC ALFÉA EXTENSA DUO R32 air-to-water heat pumps Description ATLANTIC ALFÉA EXTENSA DUO R32 air-to-water heat pumps For more information and instructions, see: ATLANTIC air-to-water heat pumps