Hi folks. A family member is renovating an old cottage and has asked me to install an Ecodan air source heat pump. All the insulation is top spec and the company supplying the pump and under floor heating is happy that it will work well. They sent me on a course (i'm usually oil) and feel ok to fit it all. However the supply company is giving me conflicting advice about where to site the heat pump. One man told me i could fit it away from the house with suitable pipe insulation, the other man tells me to fit within 1m of the house or it will lose too much heat from the flow and return pipes to the house. Ideally we would site the pump 4m from the house. Can anyone with experience offer advice if it will work properly at 4m and the best pipe insulation please? Thanks, Stix