The right AED, placed in the right hallway, in the wrong cabinet, at the wrong height, with no signage, is invisible. Field studies of public-access AED retrieval show that roughly one in five bystanders fails to locate the device within the 3-minute window, even when it’s mounted within 50 feet of the cardiac event, primarily because of weak signage and unclear cabinet placement (Circulation journal field studies, 2010–2023).
This is the tactical guide every facility manager, safety officer, and architect needs: exact mounting heights, cabinet-type comparisons, ISO 7010 signage requirements, ADA reach standards, and the building code rules that govern where AED cabinets can — and can’t — go.
ADA mounting heights (the non-negotiable baseline)
The U.S. Access Board’s ADA Standards for Accessible Design §308 set the rules for reach ranges:
| Reach type | Maximum height | Minimum height | AED cabinet rule |
|---|---|---|---|
| Forward reach (unobstructed) | 48 inches | 15 inches | Place handle at 48″ |
| Side reach (unobstructed) | 48 inches | 15 inches | Place handle at 48″ |
| Forward reach (obstructed up to 20″) | 48 inches | 15 inches | Standard fix |
| Forward reach (obstructed 20–25″) | 44 inches | 15 inches | Reduced max |
Practical rule: The AED cabinet operating handle should sit between 48 inches and 54 inches from the finished floor. 48″ is preferred for ADA-strict facilities; 54″ is acceptable in industrial settings without wheelchair access requirements.
AED cabinet types (and when to use each)
1. Surface-mount (recommended for most spaces)
Bolts to the wall surface. Easiest to install, no wall cutout required. Adds ~4–6 inches of depth into the corridor — verify corridor egress width before installing (IBC requires a 36-inch minimum clear corridor in most occupancies).
2. Semi-recessed
Partial wall cutout (~2 inches deep) with the cabinet face flush with the wall. Best aesthetic, but requires more installation labor and engineer’s sign-off on load-bearing walls.
3. Fully recessed
The cabinet sits entirely inside the wall cavity. Most flush, most expensive. Best for premium office, hotel, and hospital environments.
4. Alarmed cabinet (strongly recommended)
Audible alarm + flashing strobe when the door opens. Discourages tampering (theft is the leading cause of missing public-access AEDs) and immediately alerts staff to a deployment.
5. Heated outdoor cabinet
Used outside or in unconditioned spaces below 35°F. Thermostatically controlled heater keeps the AED’s lithium battery in operating range. Mandatory for any climate with sub-freezing winters.
6. Wall-mount transport bag (mobile option)
Not technically a cabinet — a high-visibility carry bag mounted on a wall hook. Used in athletic environments where the AED travels with the team.
| Cabinet type | Typical cost | Best for | Drawbacks |
|---|---|---|---|
| Surface-mount, non-alarmed | $100–$200 | Low-traffic offices | Theft vulnerability |
| Surface-mount, alarmed | $200–$400 | Most commercial spaces | None significant |
| Semi-recessed alarmed | $300–$500 | Hotels, hospitals | More install labor |
| Fully-recessed alarmed | $450–$700 | Premium offices | Wall structure required |
| Heated outdoor cabinet | $600–$1,200 | Outdoor venues, cold climates | Power supply needed |
| Wall transport bag | $60–$120 | Athletics, mobile use | No theft deterrent |
AED signage — ISO 7010 & NFPA 170 standards
Two signage standards govern AED identification:
ISO 7010 (international)
Symbol code E010 — green square with a white heart and lightning bolt. This is the universally recognized international AED symbol. The ISO 7010 standard standardizes safety signage across countries.
NFPA 170 (U.S. fire safety)
The NFPA 170 standard harmonizes with ISO 7010 for AED symbols and adds U.S.-specific guidance on signage placement, lighting, and wayfinding.
Signage placement rules
- Wall sign directly above cabinet: Visible from any direction of approach
- Flag (perpendicular) sign: Projects from the wall into the corridor for visibility down hallways. Critical at hallway intersections.
- Wayfinding signs: Place at decision points (hall intersections, elevator lobbies) within 50 feet of the AED, with an arrow pointing toward it.
- Floor-level visibility: Standard above-cabinet sign + flag sign together create a “you can see it from anywhere” effect.
Lighting & visibility requirements
An AED cabinet must remain visible during a power outage and in low-light environments:
- Place under existing corridor lighting (not in dark alcoves)
- Avoid placement directly opposite a window where glare reduces sign visibility
- Photoluminescent (glow-in-the-dark) signs are required in some life-safety codes for fire-egress paths and recommended for AEDs in fire-stairwells
- For after-hours buildings (gyms, 24-hour offices), supplement with battery-backed emergency lighting
Cabinet placement: the 4-step compliance check
- ADA reach: Operating handle 48–54″ above finished floor
- Corridor clearance: Does not reduce the required 36″ minimum clear corridor width per IBC
- Fire egress: Does not block any designated fire egress path
- Visibility: ISO 7010 above-cabinet sign + flag sign + wayfinding at decision points within 50 ft
Anti-theft considerations
Public-access AEDs are stolen at a non-trivial rate — a $1,500+ device in a high-foot-traffic location attracts opportunistic theft. Mitigations:
- Alarmed cabinets (80–90 dB strobe + audible alarm on door open)
- Tamper-evident seals
- Cellular-connected monitoring (premium cabinets — sends alert to facility manager when door opens)
- Security camera coverage of the cabinet (especially in outdoor or after-hours environments)
Why theft matters
The unmonitored AED problem
A non-alarmed AED cabinet in a public-access building has no way to alert facility staff if the unit is stolen — until the next quarterly visual inspection. A stolen AED is a silent failure mode: the cabinet looks the same, but the device is gone. Alarmed cabinets (or cellular-monitored versions) close this gap.
Outdoor cabinet specifications
Outdoor AED cabinets must address weather, temperature, and tampering — see our best outdoor AED guide for paired device picks. Key specs:
- Temperature range: -22°F to 122°F (heated cabinet required below 35°F)
- UV protection: UV-stabilized housing prevents plastic degradation
- Ingress protection: Cabinet typically IP65+, even if AED inside is IP55
- Locking mechanism: Push-to-open with alarm (not key-lock — bystander access required)
- Power: 110V AC for heater + alarm; some support cellular for remote monitoring
Practical install checklist
Pre-installation walkthrough
- Measure 48″ from finished floor to planned handle position
- Verify corridor clearance > 36″ after the cabinet is installed
- Confirm no fire egress conflict with facility manager
- Check existing lighting — verify cabinet visibility from 50 ft away
- Plan a flag sign for the hallway intersection visibility
- Plan a wayfinding sign at the nearest decision point
- Verify the power outlet within 10 ft if alarmed/heated
- Coordinate with security for camera coverage (if applicable)
Frequently Asked Questions
What is the ADA-compliant height for an AED cabinet?
The cabinet’s operating handle must be between 48–54 inches above the finished floor per ADA §308 reach standards. 48″ is preferred for accessibility-strict environments.
What is the ISO 7010 symbol for an AED?
ISO 7010 symbol E010 — a green square with a white heart and lightning bolt. This is the universal international AED symbol used on signage above cabinets and at wayfinding points.
Are alarmed AED cabinets required by law?
Generally not required by law, but strongly recommended as best practice. Alarmed cabinets deter theft and immediately notify staff when the AED is deployed.
Can I mount an AED cabinet in a stairwell?
NFPA guidance recommends mounting adjacent to (not inside) stairwells. Stairwells have temperature swings, restricted visibility, and may have egress-path conflicts.
What’s the difference between surface-mount and recessed cabinets?
Surface-mount bolts to the wall (4–6″ depth into the corridor). Semi-recessed has a partial wall cutout. Fully recessed sits entirely inside the wall cavity. Recessed options look better but require more installation labor and structural review.
Do AED cabinets need power?
Only if alarmed or heated. Basic mechanical cabinets do not require power. Most commercial-grade alarmed cabinets use a 9V battery (replace annually); heated outdoor cabinets need a 110V outlet.
Do I need both a wall sign and a flag sign for the AED?
Best practice: yes. The wall sign confirms the cabinet location once you’re standing in front of it; the flag sign (perpendicular to the wall) makes the cabinet visible from down the hallway and at corners.
Sources & References
Disclaimer: Building codes vary by jurisdiction. Consult your local Authority Having Jurisdiction (AHJ) before installation. This guide is informational, not a compliance certification.
