We offer 1 year warranties on all our recertified AEDs. Our warranty covers the AED itself, it does not cover the disposable accessories. If there is a customer/user error that damages or affects the unit the warranty will not be honored.  We will fix or replace all defective AEDs that are under our warranty.  This 3 year warranty upgrade extends this protection to a total of 3 years for the recertified units.