Split cooling systems start at around ₤ 300 for the products for a little single space device to around ₤ 1,500 per room for a multi-split air conditioning system and up to ₤ 2,000 per area for a VRF system. https://pipewiki.org/wiki/index.php/Your_Full_Overview_To_Cooling_And_Heating_Maintenance:_Maintain_Your_System_Running_Efficiently