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If central air conditioner turns on but is not blowing through the vents, check the filter. If it is dirty, change it. Change the thermostat into cool, this will defrost the air conditioner.
There should be at least a 12 degree split between the incomming air and the air comming out of the vents.
yes it would save money :)
Return air vents.........
In my opinion where the supply vents are located is not as important as where the return air vents are located. the supply vents should be located towards the outer walls if possible. the return air vents should be located towards the center of the dwelling if possible. every effort should be made to get the return air vents as high as possible on the wall , if not in the ceiling.Remember you are trying to get the warm air back to the a-coil so it can be pumped outside through the refrigeration lines to the condensing unit. if the ductwork is used for heating also you should put some return air vents down low to get the cool air to the furnace. This is my personal opinion and may not be everyones.
Central air conditioning is much more effective at cooling an area, less noisy and can improve air quality. The area a central air conditioner can cover depends on the size of the unit you purchase. A certified technician can size your equipment to meet the specific needs of your home. The installation details depend a lot on whether you have had it in your home or office before. If not, there is the installation of the components in the attic & your walls. If you have, it is merely replacing a unit outside.
Reddot Air Duct & Vents Care
One way to tell if you're low on coolant on a central AC unit is to feel the air coming out of the vents. If the air is warm or room temperature, it is a sign that you are low on coolant.
I'm not sure what vents you are talking about, but usually air vents are known to be working if there is air flowing through them.
Air vents are placed based on the required cfm load calculation per room not necessarily set at specific square feet apart. But you need to make sure that supply and return air are not close to each other. Supply air vents should be placed close to outside walls and return air close to interior central walls.
Airflow improperly set (too high) or the most common undersized ducts.