AED IP Rating Explained: What Does IP Code Tell About AEDs

March 18, 2021 | Last Updated: November 17, 2021

Deciphering AED features and deciding what device to purchase can be overwhelming. What are the most affordable AEDs? What even is an IP rating? We hope to clarify your questions, share important facts, and help you find what AED unit is right for you!

Let’s start with the most important features to consider.


“We have our AED in a backpack. We toss it in the back of the golf cart and go! It has to be ready for the elements, like the rain, because we take it everywhere.”

Tara Grubbs

Head Athletic Trainer Pearce High School

The most universal measurement used to compare AED resilience to the elements is the AED IP Rating.

“IP” stands for ingress protection. So an “IP Rating” can help you determine how protected your AED is from elements getting into the device, which can potentially cause damage and/or make the device not work as intended. IP Ratings are displayed with two numbers, for example, IP 54.

  • The first number, “5,” rates the level of protection the AED has against intrusion from solids, like dust
  • The second number, “4,” rates the level of protection the AED has against intrusion from moisture, like water

The higher each number is for an AED, the more protected the device is to either solid particles such as dust or moisture such as water. As such, an IP Rating of 54 is more resilient to dust than an IP Rating of 24.

Keep in mind that IP Ratings have nothing to do with how well an AED can withstand a drop or the stress induced by vibration. All AEDs must meet the same drop and shock standards in order to be approved by the Food and Drug Administration.

IP Ratings are calculated in a lab by independent, specifically-certified groups. There are several tests used to evaluate and properly assign the IP Rating for an AED. For example,

  • For the first number (solids), to earn a rating of 2, the AED must demonstrate that it’s only protected from damage by fingers or objects that are of similar size. But, to earn a rating of 5, the AED must demonstrate that it’s protected from some exposure to dust, as long as it’s not exposed to a large quantity.
  • For the second number (moisture), to earn a rating of 2, the AED only needs to demonstrate that it’s protected against dripping water for a defined period of time. But to earn a rating of 5, the AED has to show much more durability and that it’s protected from water jets for a defined period of time.

AED IP Ratings Chart

AED Make/ModelIP Rating
Cardiac Science – G3 Plus24
Cardiac Science – G555
Cardiac Science – G3 Pro24
Defibtech – Lifeline54
Defibtech – View55
Defibtech – ECG55
HeartSine – PAD 350P56
HeartSine – PAD 450P56
Philips – Onsite21
Philips – FRx55
Philips – FR355
Physio Control – ExpressX4
Physio Control – CRPlusX4
Physio Control – LifePak 100055
Physio Control – CR255
ZOLL – AED Plus55
ZOLL – AED Pro55
ZOLL – AED 355

You might be wondering, “if I’m buying an AED for my business, why does the AED IP Rating matter to me? After all, my office is indoors.”

The reality is that cardiac arrest is unpredictable. Sudden cardiac arrest rarely happens when and where we expect it to occur. Given this unpredictability, it’s not safe to assume that the emergency will happen in a controlled environment such as an office. The AED you choose to purchase should be just as ready to help someone outside of your office (such as your building’s parking lot), even if the device is stored indoors.

After thinking through how “protected” your AED needs to be from the elements, it’s also important to consider the different levels of maintenance required for the AED units on the market today.


Which AED has the highest IP Rating?

The HeartSine samaritan PAD 350P and HeartSine samaritan PAD 450P are the AEDs with the highest IP rating – with a rating of 56.


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