When we look at Indoor Air Quality we continuously look an energy consumption and heating patterns for an all round Indoor Enviromental Quality Score (IEQ). Do you have old convection or radial heating? Would reducing your heating operating costs by a factor of 4 be of interest? Mechanical Ventilation in conjunction with Heat Recovery and Air 2 Air HeatPumps for heating are a perfect combination. Cream in the Coffee !! Ventilation, no heat loss and optimised Heating effeciency with dynamic Air Purification. Air to air heat pumps allow you to quickly and efficiently heat, cool and indeed also purify the supply air in your offices or home. They offer full zonal climate control and very significant efficiencies over electric , gas or oil heated radiators by using variable output and the heating technique itself. The term Co-efficient of Performance becomes really relevant where with many air 2 air heat pumps proving up to 4 times the heat output for the energy required to power it (COP=4). They do this by transferring air through an external unit outside the space, to an internal unit inside the space. The internal units associated with air to air heat pump technology come in different styles: high wall, low wall, cassette (ceiling-mounted) or through vents placed on the floor, ceiling or walls (ducted),