Idaho Code 5-337
Liability: Use of an AED
An individual who, without compensation, provides emergency care by using an AED at the scene of an emergency or accident will not be held legally responsible for acting or failing to act. They can be held legally responsible if acting with extreme carelessness or intent to cause harm. This section also applies to a person trained to use an AED or an entity who maintains an AED.
Immunity for use of automated external defibrillator (AED)
(3) (a) Any person who reasonably renders emergency care using a defibrillator, without remuneration or expectation of remuneration, at the scene of an accident or emergency to a victim of the accident or emergency shall not be liable for any civil damages resulting from the person's acts or omissions. (b) No cause of action shall be maintained against a licensed physician, physician assistant, nurse practitioner, or nurse, or against an emergency medical technician, fireman, peace officer, ambulance attendant or other person trained to use a defibrillator, or against a person or entity who acquires or maintains a defibrillator which arises from the reasonable use of a defibrillator in an emergency setting and no cause of action shall be maintained against a physician who wrote a prescription for the defibrillator. (c) This immunity from civil liability does not apply if the acts or omissions amount to gross negligence or willful or wanton or reckless misconduct.