Daikin EHY2KOMB32A Altherma high efficiency gas combi boiler for use wtih Daikin Air Source Heat Pump to create a hybrid system.This unit works with a separate external air source heat pump unit to produce heating and hot water using the most economical method depending on the outdoor temperature. Works with existing pipe work and radiators so can be an economical option. Featuring a labryinth fin heat exchanger for better heat exchange. Optional pre-assembled B-pack including all auxiliary components for quick and simple installation.