Destratair Fuel input savings 15 - 20%
Destratification to within 1 degree
Easy low level installation
Straightforward maintenance
Minimal draughts in occupied zone
Overhead propeller fans
Fuel input saving 10 - 15%
Destrataification to within 3 degrees
High level installation
Maintenance involves health and safety issues
Draught in occupied zone
Overhead boxed fans
Fuel input savings 8 - 10%
Destratification to within 3 degrees
High level installation
Maintenance involves health and safety issues
Draught in occupied zone
Overhead twin fan units
Fuel input savings 10 - 12%
Destratification to within 3 degrees
High level installation
Maintenance involves health and safety issues
Some draughts within the occupied zone
Overhead ducted fans
No fuel input savings
Destratification zero
High level installation
Maintenance involves health and safety issues
Localised draught at floor level
Fuel input savings above are as tested by ETSU and British Gas in independent evaluations