I have possibly talked a friend of mine into having his oil fired boiler ripped out and replaced with a Daikin Altherma unit, coupled with a roof mounted solar collector. He is quite interested in future energy savings and this seems to be the latest technology on the market. (basically an air source heat pump). http://www.daikinaltherma.com:8080/i...ng=en&site=250

As the system will mostly be for heating the house and sanitary water, cooling is not really considered.

Has anyone had any experience of working with this equipment? Does it do what it says on the box?

As he is a friend, I don't want to mislead him based on the sales hype and I certainly don't want him bending my ear everytime we go for a beer