AED Buyer's Guide: Choosing a Defibrillator for Your Workplace or School
AED Buyer's Guide: Choosing a Defibrillator for Your Workplace or School
An AED (automated external defibrillator) is a portable device that reads a person's heart rhythm and, if it detects a shockable rhythm during sudden cardiac arrest, delivers an electric shock to help restore a normal heartbeat. To choose one for a Canadian workplace or school, match the unit to your site: pick semi-automatic or fully automatic operation, confirm it supports both adult and pediatric use, check the IP rating against your environment, and budget for ongoing pad and battery replacement. The right AED is the one your staff can reach and use within a few minutes.
Key takeaways
- Minutes matter. Survival from sudden cardiac arrest falls sharply with every minute of delay, which is why an on-site AED and early CPR are so important.
- Semi-auto vs fully auto is about who presses the shock button — the rescuer or the device. Both are safe; the choice depends on your responders' comfort level.
- Pads matter. Most sites need adult pads plus a pediatric option for children under roughly eight years or 25 kg.
- Plan for upkeep. Pads and batteries expire; a cabinet, signage and a simple check schedule keep the AED ready.
- Training helps. AEDs guide you with voice prompts, but CPR and AED familiarization make responders faster and calmer.
What an AED does, and why minutes matter
Sudden cardiac arrest happens when the heart's electrical system malfunctions and the heart stops pumping effectively. The person collapses, stops breathing normally, and has no pulse. It is a different event from a heart attack, though a heart attack can trigger it. An AED will not shock a heart that does not need it — the device analyzes the rhythm and only advises a shock when it detects a shockable one.
Heart & Stroke and other resuscitation bodies describe a 'chain of survival': a sequence of actions that, done quickly and in order, gives someone the best chance. The links are early recognition and calling 911, early CPR to keep blood moving, early defibrillation with an AED, and early advanced care from paramedics and hospital staff. Every link depends on the ones before it, and the first three can be delivered by ordinary bystanders. Because the chance of survival drops with each passing minute, an AED that is close at hand and easy to grab can matter more than one with extra features locked in a distant office.
Semi-automatic vs fully automatic AEDs
Every AED sold for public use analyzes the heart rhythm on its own. The difference is what happens after it decides a shock is needed.
- Semi-automatic: the device charges and then tells the rescuer to press a flashing shock button. The rescuer stays in control of the moment the shock is delivered.
- Fully automatic: after warning everyone to stand clear, the device delivers the shock itself with no button press. This removes one step for a nervous first-time responder.
Neither is inherently safer — both warn bystanders to stay clear and both only shock a rhythm that needs it. Workplaces with trained first-aid attendants often prefer semi-automatic for the sense of control; sites where the likely responder is an untrained bystander sometimes prefer fully automatic. Consider who will actually be standing over the patient at your site.
Adult vs pediatric pads
Pads (also called electrodes) are the sticky patches that connect the AED to the patient. Adult pads are the default. For a young child, most guidance points to pediatric pads or a pediatric setting for children under roughly eight years of age or about 25 kg, because they lower the delivered energy. If a child needs defibrillation and only adult pads are available, current resuscitation guidance is that adult pads are still used rather than withholding the shock — but a site with children should stock a pediatric option.
Some AEDs use separate pediatric pads; others use a key or button that adjusts the energy while keeping one pad set. Schools, daycares, arenas and family gyms should confirm the pediatric approach before buying. You can compare pad and battery options in the defibrillators and supplies collection to see which consumables fit the unit you are considering.
IP rating, durability and the environment
An AED's IP (Ingress Protection) rating tells you how well the sealed unit resists dust and water. The two digits cover solids then liquids — a higher second digit means more water resistance. A climate-controlled office lobby is undemanding, but a pool deck, arena, workshop, loading dock or outdoor sports field asks more of the enclosure. Match the rating and operating temperature range to where the AED will actually live. Also weigh device weight, screen versus audio-only prompts, and whether the unit provides CPR feedback such as compression-rate coaching.
Maintenance: pads, batteries, cabinets and signage
An AED is only useful if it is ready. The two consumables that expire are the pads and the battery, typically on multi-year cycles that differ by model. Track expiry dates and replace items before they lapse — an AED with dead pads in an emergency is the outcome you are buying insurance against. Most units run a periodic self-test and show a status indicator; a quick weekly or monthly glance at that indicator should be part of someone's routine.
A wall cabinet protects the unit, makes it easy to find, and can include an alarm. Clear wall signage helps staff and visitors locate the AED under stress. Keep a small kit nearby with a razor (for chest hair), a towel (to dry wet skin), gloves and a barrier — small items that remove delay when seconds count. Stock spare pads and batteries alongside the unit rather than ordering them only when the first set expires.
Training and what to expect in an emergency
AEDs are designed for use by people who are not medical professionals. Once switched on, the device talks the responder through each step with clear voice prompts, so training is not strictly required to save a life. That said, familiarity helps enormously: responders who have practised are faster, calmer and more willing to act. Many Canadian workplaces fold AED familiarization into their standard first-aid and CPR training, and provincial workplace health-and-safety rules often shape first-aid requirements for a given site and staff count.
In an emergency the priorities are simple and stay the same everywhere: call 911, start CPR, and follow the AED's voice prompts. The device will tell you when to attach pads, when to stand clear, and whether a shock is advised. Keep those instructions front and centre in any internal training rather than trying to memorize device-specific steps.
How to choose for your specific site
Start with your building and your people, not the spec sheet. Walk the site and ask: from the farthest occupied corner, could someone retrieve the AED and return within a few minutes? Large or multi-floor sites often need more than one unit. Then layer on the environment (IP rating), the likely responder (semi-auto vs fully auto), and who is on site (pediatric capability for schools, arenas and family facilities).
| Site type | Pediatric capability | Environment / IP | Placement note |
|---|---|---|---|
| Office / warehouse | Usually adult-only | Standard indoor; higher IP for dusty shops | Central, signposted; extra units per floor |
| School / daycare | Pediatric option needed | Standard indoor | Main office plus gym; visible signage |
| Gym / arena / pool | Pediatric if children attend | Higher IP for moisture | Near activity area, not a locked office |
| Retail / hospitality | Usually adult-only | Standard indoor | Staff-accessible and customer-visible |
Finally, budget for the whole lifecycle, not just the purchase. Factor in a cabinet, signage, a prep kit, and the recurring cost of replacement pads and batteries. Browsing a curated range of AEDs, pads and batteries together makes it easier to confirm that a unit's consumables and accessories are readily available in Canada before you commit.
Frequently asked questions
Do you need training to use an AED in Canada?
No — AEDs are built for untrained bystanders and guide you with voice prompts. The essentials are to call 911, start CPR and follow the device's instructions. That said, CPR and AED familiarization make responders faster and more confident, and many workplaces include it in first-aid training.
How often do AED pads and batteries need replacing?
Both have expiry dates that vary by model, typically on multi-year cycles. Track the dates, watch the unit's status indicator, and replace pads and batteries before they lapse. Keeping spares on hand avoids scrambling when a set expires.
What's the difference between semi-automatic and fully automatic AEDs?
A semi-automatic AED tells the rescuer to press a shock button; a fully automatic AED delivers the shock itself after warning everyone to stand clear. Both analyze the rhythm first and only shock when needed. The choice comes down to who is likely to respond at your site.
Can an AED be used on a child?
Yes. For younger children, pediatric pads or a pediatric setting are preferred to reduce the delivered energy. If only adult pads are available in an emergency, current guidance is to use them rather than withhold a shock. Sites with children should stock a pediatric option.
Where should we mount an AED?
In a visible, signposted, unlocked spot that someone can reach and return from within a few minutes. Large or multi-floor buildings often need more than one. A wall cabinet with an alarm protects the unit and makes it easy to find under stress.
