Toshiba has launched its compact Digital Inverter split systems condensing units. These are lighter, and as much as 40% smaller than previous Toshiba models which were already smaller than alternative manufacturers.

The new Toshiba inverter driven heat pump outdoor unit is so efficient that it can produce the same capacity with a single fan configuration than others can with a double fan, double height outdoor unit. The unit incorporates new fan designs that save power and reduce noise even further.

The secret of the design is a new 3 row multiple tube heat exchanger, this increases heat exchange capacity over traditional two or single row designs.

The compact system utilises a high efficiency DC twin rotary compressor. The capacity ranges are 5.0 to 12.5 kW in cooling and 5.6 too 14 kW in heating. The system is also capable of functioning in ambients down to -15°C.

Due to the compact dimensions and low weight of these units multiple benefits and savings are made. They are much easier to transport, manoeuvre and install. Further installation benefits include the unit's ability to accommodate long pipe-runs. And it also only requires a single phase power supply.

The new models can be twinned and the indoor unit options including a new new compact high wall, ceiling suspended, ducted and ceiling cassette.

Features include a connection to enable already low sound levels to be reduced further for night operation. Also useful is a maintenance indicator facility.