Are you looking to install a system 4 Aircon? Firstly, you have establish whether you are installing in 3 bedrooms 1 living room. Or if you are installing in 4 bedrooms. And what is the btu that you require for each room? Whether you are installing a new set of Air-con or replacing your existing ones. We are going to recommend you these system 4 aircon models. The recommendation are based on price, reviews and warranty. We will analyse in terms of price, Warranty and popularity. In addition, we will recommend a particular system 4 Aircon model for 2020. And if you still have any enquiries. Do feel free to engage us for a free tele-consultation. Additionally, if you are unsure of Aircon installation, you can check out our guide for more information.