Technology is always changing and efficiency levels just keep getting better. Our Bosch HVAC unit was design to give you the comfort level you want, efficiency level you need and at a price that will show you savings. With the Bosch Inverter Ducted Split System you could run your HVAC unit off of a standard generator. This unit only requires 2 to 4 amps to start it up leaving you with the most efficient system in the market.