Probably the cheapest 5Kw system on the market from a major manufacturer the S18EQ.NSK model. This high wall mounted model is a full heat pump system that can heat and also air condition with an added dehumidification function. You can use the automatic function on this model and the system will automatically change between modes to keep the temperature at the setpoint you have selected. Amongst the optional extras available is a hardwired controller with full monthly timer functions on if required. This model uses the latest R32 environmentally friendly refrigerant gas. Installation kits are also available for this model, if an installation kit is required see installation "Kit B" in the installation kits category. If required you can also hire the vacuum pump testing rig which can also be found in the “Installation Kits” category.
Split air conditioning & heat pump system should be installed by qualified personnel holding an FGAS Certificate.