Others can support central air but can t be cooled as effectively with it as they might with an alternative system.
Alternate air conditioning systems.
The simplest way to do this is to use a fan to pull in cold air through the windows at night.
Whether installed in a window or made to sit on the floor these compact air conditioners need to be able to release exhaust outside either by being propped in the window or with an exhaust hose positioned in an opening in the window.
It saves money and energy.
One of the most popular alternatives to central air is a window unit or portable air conditioner that cools a single room.
In fact there are a lot of alternatives.
Had about enough of the system maintenance and have cleaned coils changed out air filters and sealed ducts quite enough for one lifetime.
In dry climates you can use a swamp cooler which cools your home with evaporating water.
According to energy gov ducts losses can account for more than 30 of energy consumption for space conditioning.
Solar and geothermal heating seem too pricey.
Unlike a central air conditioning unit a portable air conditioner allows you to cool a specific room rather than waste energy and money cooling your entire home including all the unused rooms.
Although a ductless mini split is still an air conditioner one can still include it as an alternative to traditional ducted air conditioners for 2 reasons.
Replacing a furnace or air conditioning system not doing it for you.