What is   an AED?

An automated external defibrillator (AED) is a device that checks a person’s heart and delivers an electric shock if it has stopped beating normally.


If a person suddenly collapses, they may be suffering from sudden cardiac arrest (SCA). SCA is serious. It means that the person’s heart has stopped pumping blood and they need help fast.


The most important element in the treatment of SCA is to provide a rapid shock to their heart called defibrillation. An automated external defibrillator (AED) helps ordinary people to provide defibrillation quickly.


While we recommend that everyone receive training in CPR and using an AED, AEDs are designed to coach you through the process, even if you haven’t had training. The device determines if a shock is necessary and if it is, a calm, clear voice explains exactly what to do. It actively adapts the instructions to keep you on track. Intelligent sensors assess and automatically deliver the right shock, at the right time ‐ personalized to every man, woman, or child.

Everything you need to know about using AEDs

Increase your chances for success with an AED program

Having an AED is a good step toward saving a life, but it will be much more effective if it is within an AED program.


A good AED program includes working with your local EMS, choosing the right AED, locating the AEDs correctly, training, and ongoing maintenance. With a good implementation plan and proper training, people are prepared to deliver defibrillation quickly if it becomes necessary.


With the help of our partners, Philips provides guidance on setting up an AED program that's right for you.


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What to know before you buy an AED


Owning an AED

Buying for an organization or business:

    HeartStart AED

    HeartStart HS1

    • Ready to act. Ready to go.
    • Start quickly. Treat confidently.
    • Easy as 1-2-3
    HeartStart FR3 Defibrillator

    HeartStart FR3  

    • Easy to use so you’re fast to respond
    • Rich clinical information to drive patient care
    • Built to endure and designed for flexibility
    HeartStart AED

    HeartStart FRx

    • Built for rugged environments
    • Easily used on infants and children
    • Low maintenance to be ready when you need it


Find information on user manuals,

product training, warranties and more.

          View support
1. USA KOL Johns Hopkins University Dr. Weidfeldt, Survival After Application of Automatic External Defibrillators Before Arrival of the Emergency Medical System: Evaluation in the Resuscitation Outcomes Consortium Population of 21 Million, 2010