The days are getting warmer and warmer. You are enjoying your backyard more again and making time to throw the frisbee, or just read in the sunshine or garden. The warmth is a pretty nice change from those cold days that kept you cooped up in your house.
However, when the temperature really gets up there, you might look back fondly on the chill from winter if only because you are craving a cooling breeze. On those hot, uncomfortable days, you are going to be relying on your air conditioning system a lot, so it is a good idea to take the time to make sure it is ready for the job.