Calorex Pro-Pac "X" Range of Swimming Pool Heat Pumps
The Calorex Pro-Pac "X" range are designed to operate from May to September or from April-October
They have a full defrost system and will work down to +3c air temperature.

They are available in either single or 3-phase electrical supply.
Please click on either single phase, or 3-phase to see the relevant models:-