Some tips to ensure your Air Conditioning is kept in good order:
-Invest in and use ceiling fans in your Unit to help keep things cool and circulate air
-Carefully and slowly pour some vinegar in your drain pan located in your HVAC closet once a season. Sometimes the drain line to outside can get clogged up, causing water backup which will then force your A/C off to prevent a water spill in your Unit.
-Have your A/C periodically maintained. They should clean the unit outside for any debris, dust etc
– Bushes help provide shade to the units to keep them for working too hard, but it needs space to circulate air around it.