Choosing the Right AED That Will Work for You

The good news? Today's AEDs are designed to guide anyone through the rescue process, even without prior training. The difference between models comes down to features that matter in your specific setting: CPR guidance, durability, pediatric capability, bilingual support, and the true cost of ownership over time.

Here's a look at five of the most trusted AEDs on the market to help you make a confident, informed decision.

AED Comparison: Top Features at a Glance

What the Numbers Tell You

A few things stand out when you compare these models side by side.

If CPR feedback is a priority — and it should be — the ZOLL AED Plus and ZOLL AED 3 lead the field. Both use real-time depth and rate sensing to coach rescuers through compressions, which research consistently shows improves outcomes. With 5-year pad lifespans and 5-year batteries, they also offer the lowest total cost of ownership of any model on this list — one consumable cycle over five years with no mid-point replacements. 

When every second matters, the ZOLL AED 3 delivers. RapidShock™ technology performs the industry's fastest rhythm analysis, ready to deliver a shock in as little as 5 seconds — and with universal Uni-padz that work for both adults and children right out of the box, there's no hesitation, no swapping pads, just fast, confident action

The Powerheart G5 also offers real-time CPR feedback and adds two features that set it apart from everything else here. First, its Intellisense pads automatically detect patient size and adjust energy delivery accordingly — no need to swap to pediatric pads. Second, it's the only AED on this list that allows a rescuer to switch between English and Spanish voice prompts with a single button press (additional languages available) — without restarting or delaying the rescue. For workplaces with multilingual teams, manufacturing floors, schools, or any public space serving a diverse community, that capability can make a real difference in the critical first moments of a cardiac emergency.

The Philips HeartStart Onsite and FRx are exceptionally easy to use and widely trusted — but they rely on audio prompts alone without compression depth feedback. The Onsite offers a lower upfront purchase price, making it an attractive entry point — just factor in more frequent pad replacements every two years when thinking about the full cost over time.

So Which AED Is Right for You?

There's no one-size-fits-all answer, but here are some quick guidelines:

• Choose the ZOLL AED Plus if you want proven CPR feedback technology at a strong value, with minimal maintenance over a 5-year ownership cycle.
• Choose the ZOLL AED 3 if you want the most advanced guidance system with a color display - and no need to buy separate pediatric pads.  
• Choose the Powerheart G5 if you serve a multilingual or mixed adult and pediatric population and want seamless pad compatibility with no mid-rescue language barriers.
• Choose the Philips HeartStart Onsite if a lower upfront cost and simplicity are the top priority for a low-risk indoor environment — and you're prepared for pad replacement every 2 years.
• Choose the Philips HeartStart FRx if the device will live in a more rugged environment - and also requires pad replacement every 2 years.