The best training company will give a clear duration when got enrolled at CPR classes in Philadelphia. The company policies are commonly different, and you have to know each of them. Put into account that duration inquiry should be done initially for your security, as well. The typical or common CPR and first aid class can be completed within four hours. Imagine how fast it is to learn the basic of saving life. You will get super amazed – no questions asked. The four hour CPR and first aid duration might not be suitable to anyone because humans have dissimilar level of thinking.