An AED mounted on the wall is only useful if it will work in the first minutes of a cardiac emergency. This AED maintenance guide gives employers, schools, coaches, property managers, and community organizations a practical way to keep that equipment ready – not merely visible.
Most modern automated external defibrillators perform routine self-checks, but that does not remove the need for human oversight. Pads expire, batteries reach replacement dates, cabinets are moved during renovations, and a device can be taken from its location after an incident without anyone reporting it. A simple, documented inspection process closes those gaps.
Why AED Maintenance Is a Readiness Issue
Sudden cardiac arrest does not wait for a convenient time, a fully staffed office, or a scheduled training day. When it happens, the response depends on a clear emergency plan, people who know how to act, CPR, and quick access to a working AED.
AEDs are designed to guide rescuers with voice prompts, making them approachable for trained responders and bystanders. Still, the device cannot compensate for missing adult pads, a depleted battery, or a cabinet key that no one can find. Maintenance protects the investment your organization has already made in emergency preparedness.
For organizations with multiple sites or shifts, the challenge is usually ownership. Everyone assumes someone else is checking the device. Assigning a named AED coordinator and a backup coordinator makes the responsibility clear, even when staff members change roles.
AED Maintenance Guide: What to Check Each Month
A monthly visual inspection is a sensible baseline for most organizations. Your AED manufacturer’s instructions and your internal policies should always guide the final schedule, especially if you operate in a regulated setting or manage several devices.
Start by confirming that the AED is in its assigned location. It should be easy to see, unobstructed, and accessible to the people who may need it. A device stored behind a locked office door, buried in a supply closet, or blocked by furniture is not truly available in an emergency.
Next, look at the device status indicator. Many AEDs display a green check mark, flashing light, or other signal to show that the unit has passed its self-test. A red indicator, warning symbol, alarm, or blank status display needs prompt attention. Do not assume an alert will resolve itself after another self-check.
Check the battery installation and expiration or replacement-by date. AED batteries are not interchangeable across all models, and replacement timing varies by manufacturer. Keep the correct spare battery on hand when your organization’s policy or device instructions call for one. Store it according to the manufacturer’s guidance rather than leaving it in a hot vehicle, damp maintenance room, or other unsuitable environment.
Inspect the electrode pads without opening sealed packaging unnecessarily. Confirm that the pads are present, sealed, connected as required by the device, and within their expiration date. Verify that you have the appropriate pads for the population your AED program serves. A school, fitness center, pediatric practice, or youth sports program may need pediatric pads or a pediatric setting in addition to adult pads.
Also check the response kit. Depending on your setup, it may include gloves, a CPR face shield or barrier device, trauma shears, a razor, absorbent towel, and spare pads. These supplies support a faster response because they help rescuers expose and dry the chest, remove clothing, and apply pads without searching for basic items.
Keep an Inspection Log That Someone Can Use
An inspection is far more valuable when it is documented. A paper log inside the AED cabinet can work well for a single device, while a shared digital record may be more practical for a larger campus, office, or organization with several locations. The format matters less than consistency and accountability.
Each entry should record the date, inspector’s name, AED location, status indicator result, battery date, pad expiration date, and any supplies replaced. Include a notes field for issues such as a blocked cabinet, a missing sign, a low-temperature storage concern, or a device that has been removed for service.
Documenting expiration dates helps your team replace pads and batteries before they become a problem. Set reminders well ahead of those dates, not on the day they expire. This gives you time to obtain the correct manufacturer-approved supplies and avoid leaving the AED out of service.
If a problem is found, mark the device clearly so no one mistakes it for a ready unit. Then follow the manufacturer’s service instructions and your organization’s emergency equipment procedures. If you have more than one AED, review whether another device adequately covers that area while the affected unit is being serviced.
Check the Cabinet, Signage, and Access Plan
AED readiness is about more than the machine itself. People have to find it quickly, know how to reach it, and be able to bring it to the patient without delay.
During inspections, make sure the cabinet opens as intended and that any alarm functions properly. If a cabinet is locked, reassess that choice carefully. Security concerns are real, but complicated access can cost precious time. The people responsible for opening the cabinet must be available during all operating hours, including evenings, weekends, and events.
Confirm that AED signs remain visible from common travel paths. If your building has expanded, been remodeled, or rearranged, older signage may no longer direct people effectively. Larger facilities may benefit from identifying AED locations on emergency maps, staff orientation materials, and event plans.
It also helps to walk the route from high-risk or high-traffic areas to the AED. Consider a gymnasium, cafeteria, athletic field, warehouse floor, front lobby, or school playground. Can a staff member retrieve the device quickly? Is the route clear during normal operations? The answer may point to a need for a second AED or a better location.
What to Do After an AED Is Used
Any AED use should trigger a post-incident process. Even when the unit appears ready after an event, it may need new pads, replacement supplies, cleaning, data review, or service. Follow the device manufacturer’s instructions and your organization’s incident reporting procedures before returning it to service.
Replace single-use items immediately. Check whether the battery needs replacement based on the model and usage. Inspect the case, connector, cabinet, and accessories for damage or contamination. Then update the inspection log with the event date, actions taken, and the date the device was confirmed ready again.
A post-incident review can also improve the broader emergency response plan. Was the AED easy to locate? Did staff know who called 911, who started CPR, and who met emergency responders? Were trained employees present, and did they feel prepared to act? These are operational questions, not blame questions. They help your team respond better next time.
Pair Equipment Checks With CPR and AED Training
A maintained AED is one part of a complete response plan. Employees, educators, coaches, and community members also need practical confidence with CPR, AED use, and emergency activation. Training is particularly valuable when staff turnover is frequent or when an organization has moved, added equipment, or changed its emergency procedures.
Recognized, hands-on CPR and AED courses let participants practice placing pads, following prompts, providing high-quality compressions, and working through realistic response roles. For workplaces and schools, on-site group instruction can be especially useful because the training can connect directly to the actual environment and response plan.
Richmond Training Concepts works with individuals and organizations that want credible CPR, AED, BLS, and First Aid education led by experienced instructors. The goal is not to make every participant feel like an emergency professional. It is to help ordinary people take the right actions before professional help arrives.
A Simple Maintenance Routine Builds Confidence
Choose a consistent monthly inspection date, assign ownership, track expiration dates, and address alerts promptly. Then review AED placement and emergency roles at least periodically, especially after staffing, facility, or program changes.
The best time to discover a missing pad set or inaccessible cabinet is during a calm inspection, not while someone is waiting for help. A few focused minutes each month can help make your AED a dependable part of your organization’s readiness plan.