AED Buyer’s Guide & FAQ

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Buyer’s Guide & FAQ

AED Buyer's Guide & FAQ

Everything you need to know before buying an AED — from technology differences to legal requirements, maintenance costs, and the right device for your situation.

Buying Guide

How to Choose the Right AED

Choosing an AED comes down to four key factors: environment (indoor vs. outdoor), users (trained vs. lay rescuers), volume (single unit vs. fleet), and budget. Our guide walks you through each.

Environment & IP Rating

Outdoor, industrial, or humid environments need IP55+. Indoor office AEDs can use standard ratings.

User Training Level

Untrained users benefit most from clear voice guidance (Philips) or CPR coaching (ZOLL AED 3).

Pediatric Needs

Schools and family settings need pediatric pads or an infant key. Not all AEDs include this by default.

Total Cost of Ownership

Factor in pads ($30–$80/yr), battery ($100–$200 every 4–5yr), and accessories. Budget models save upfront but may cost more long-term.

Frequently Asked Questions

Common AED Questions — Answered

What is an AED?+
An Automated External Defibrillator (AED) is a portable medical device that delivers a controlled electric shock to restore a normal heart rhythm during sudden cardiac arrest (SCA). Modern AEDs use voice and visual prompts to guide even untrained bystanders through the process.
Do I need medical training to use an AED?+
No. AEDs are designed for use by untrained bystanders. They analyse the patient's heart rhythm automatically and only recommend a shock when one is needed. However, CPR training alongside AED training significantly improves outcomes.
How much does an AED cost?+
AED prices range from $895 (HeartSine budget models) to $2,000+ (premium clinical models). Most public-access AEDs fall in the $1,299–$1,999 range. Annual consumable costs (pads + battery) add $100–$300/year.
How long do AED batteries last?+
Most modern AED batteries last 4–5 years in standby mode and can deliver 200+ shocks. Always check the manufacturer's expiry and replace immediately when indicated by the device's status light.
What is the difference between semi-automatic and fully automatic AEDs?+
Semi-automatic AEDs analyse the rhythm and prompt the user to press a button to deliver the shock. Fully automatic AEDs deliver the shock without any button press after warning bystanders to stand clear.
Are AEDs legal to own?+
Yes. In the United States, AEDs are available for purchase without a prescription. Most states have Good Samaritan laws protecting lay rescuers who use an AED in good faith during an emergency.
What is SMART Biphasic technology?+
Developed by Philips, SMART Biphasic technology measures the patient's body resistance (impedance) and adjusts the defibrillation energy accordingly. This delivers the right amount of energy for each individual — improving first-shock success rates.
How often should an AED be inspected?+
Most manufacturers recommend a monthly visual check (status indicator, pads in date, battery OK) and an annual professional inspection. Many AEDs perform automatic daily self-tests and alert you if maintenance is needed.
Can children use an AED?+
Yes, but children under 8 or under 55 lbs require pediatric pads or a pediatric key (Philips). Using adult pads on a child is acceptable if pediatric pads are unavailable — it's still better than no shock.
What does AED program compliance mean?+
An AED program includes: device registration, written emergency response plan, staff training, maintenance schedule, and medical director oversight. Many states require formal programs for businesses and schools.
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