Every home should have an AED. Like a fire extinguisher you never know when it will be needed. If it saves even one life it has paid for itself a thousand times over.
Without an AED one is dead without any chance of recovery. You can do CPR and behave as if your the heart pumping for the victim of a sudden cardiac arrest. However, CPR does not shock and restart a heart if there is a shockable rhythm. Only a defibrillator such as an AED can deliver this therapy.
Finally, to save a life one needs to prepare to be ready in advance. Without an AED one is simply I’ll equipped to save a life.