I witnessed a life saving event using an AED from a rec center. The patient was shocked twice before the EMT's arrived. The second shock brought her back. CPR was begun in the first few moments. 4 -4 1/2 minutes is fast, but will it be fast enough? What if it's 6 minutes?

that's what my father in law did for my mother in law. they wanted to travel, & not worry about being able to find one. so, Dad being who he is, bought his own & learned to use it

That's fine it is your life.

It IS NOT 4 - 4 1/2 minutes from the moment the need for care until the administration of AED care. It is 4 1/2 minutes after you locate your phone, place the call, the 911 operator understands the need for what type of response, and the first responders to enter your home, locate the patient, to deploy the unit. Easily this increases the time in excess of 6 minutes.

4 - 4 1/2 minutes response rate is award winning not to be be diminished by my comments. It is, however, longer than deployment of an in home AED. Longer deployment equates to higher death rate. Nothing, no opinion, no argument, can change this fact.