Hands down this is the cheapest-to-run 3.5kW Split System Air Conditioner you can buy. Video Link
 
Stay Cool or Warm without the huge energy bills. Use it more often without regrets.
 
Pays for itself, in energy savings, within 7-14 months of every day run time.
 
Runs automatically between both Solar DC Power and 240V AC Mains. 
 
12000 BTU Performance without costing the earth.
 
As the sun goes down it transitions over to the mains power supply.
 
Comes with a 6 Year Australian Warranty when installed by a certified air conditioner installer.
 
Rated to cool or heat up to 60 square meters.
 
Filters pollen particles from the air and can also dehumidify your space.
 
Helps to reduce Greenhouse Gas Emissions back at the power station.
 
Highly efficient and feature packed 3.5kW split system inverter air conditioner.
 
Uses 1kW of solar panels (typically 4 x 250W panels in series).
 
When running together with the solar panels it uses as little as 30W of 240V AC mains power which is virtually nothing compared to standard air conditioners.