Yes, you can. This is what we call an evaporative changeover. Changing over from evaporative to reverse cycle refrigerated ducted air conditioning is a simple task that is often completed in 1 day. Evaporative air conditioning is a simple way of allowing outside air to flow into your home via ducting. Where it differs from refrigerated ducted air conditioning is that evaporative only supplies slightly conditioned outside air. Whereas, refrigerated air conditioners allow for this air to be conditioned through the refrigeration cycle so that is provides year-round comfort.
When upgrading from evaporative air conditioning to a refrigerated ducted system, the ducting cannot be re-used. It may look the same, feel the same and serve a similar purpose, but the actual diameter of the ducting is different for a refrigerated system. A refrigerated ducted air conditioner needs different sized diameter ducting to allow the conditioned air to pass through.
It can be a similar story for the outlets. After many years of use, the once glistening white ceiling outlets can turn a shade of yellow and become stained. We replace them at the same time you’re getting the new system installed.