The best way to ensure that your central air-conditioning system is in good working order is to arrange for a tuneup with a professional HVAC technician. You can prevent little issues from escalating into major problems.
Patio decor needs to hold up well in direct sunlight and handle the heat. Materials that would hold up in other parts of the country will not do well here.
Prunely a tree severely opens the canopy to damage by intense sunlight. This in turn can cause branches to sunburn.