Automated External Defibrillators (AEDs) are life-saving devices designed to respond quickly in cardiac emergencies. However, simply having an AED on site is not enough - proper maintenance is essential to ensure it works when needed most. One of the most common questions businesses and organisations ask is: how often should AED pads be replaced?
AED Pad Replacement: The Short Answer
Most AED pads should be replaced every 2 to 5 years, depending on the manufacturer. Always check the expiration date printed on the pad packaging and follow the device manufacturer’s guidelines.
Expired or damaged pads can fail to deliver a life-saving shock, making regular checks a critical part of AED maintenance.
Why Do AED Pads Expire?
AED pads contain a conductive gel that helps deliver the electrical shock effectively. Over time, this gel can dry out, reducing conductivity and adhesion. Expired pads may:
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Fail to stick properly to the patient’s skin
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Deliver an ineffective shock
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Cause delays during an emergency
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Trigger device warnings or errors
For workplaces, public spaces, and healthcare environments, ensuring pads are within date is essential for compliance and safety.
When Should You Replace AED Pads?
AED pads should be replaced in the following situations:
1. When They Reach the Expiration Date
Even if unused, pads must be replaced once expired. Most AEDs will alert you when pads are out of date.
2. After Use in an Emergency
AED pads are single-use only. Once opened and applied, they must be replaced immediately.
3. If Packaging Is Damaged or Opened
Pads must remain sealed to maintain conductivity. Any damage to the packaging requires replacement.
4. If Pads Fail a Routine AED Check
Many AEDs run self-tests. If the device indicates a pad fault, replace them straight away.
How to Check Your AED Pads
Routine AED inspections should be part of your safety process. Here’s what to check:
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Expiration date on pads
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Packaging is sealed and undamaged
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AED status indicator shows “ready”
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No warning lights or error messages
For businesses, monthly AED checks are recommended to ensure full readiness.
Do Different AED Pads Have Different Lifespans?
Yes. Pad lifespan varies by manufacturer and type:
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Standard adult pads: Typically last 2–5 years
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Paediatric pads: Often have slightly shorter shelf lives
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Pre-connected pads: Same expiry rules apply
Always use pads approved for your specific AED model.
Why Regular AED Maintenance Matters for Businesses
For workplaces, gyms, schools, medical providers, and public environments, maintaining an AED is part of responsible health and safety practice. Faulty or expired pads could mean the device fails during a cardiac arrest where every second counts.
Regular replacement ensures:
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Device readiness
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Compliance with safety standards
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Maximum shock effectiveness
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Confidence during emergencies
Final Thoughts
AED pads should typically be replaced every 2 to 5 years, after use, or if damaged or expired. Regular checks and proper maintenance are essential to ensure your AED performs when it matters most.
If your organisation relies on an AED, keeping replacement pads in stock and monitoring expiration dates is a simple but critical step in protecting lives.