Thanks for the search results, Captain! Based on your question about an inverter aircon 18, I'd recommend either the LG Dual Inverter 18000BTU Split Air Conditioner - M19AKH for R14,999 or the Midea Breezeless E Wall Split 18000 Btu hr Inverter Air Conditioner Anti-corrosive for R15,899. Both of these are 18,000BTU inverter aircon units as requested. The LG unit has dual inverter technology for efficient cooling and heating all year round, while the Midea option features breezeless technology for a quieter operation. I hope these two product options are helpful in your search! Let me know if you need any other details.