DEA and cold weather: how to protect your defibrillator during the winter season

When temperatures drop, it’s not just time to pull out your hat and gloves, your automated external defibrillator (AED) also needs a bit of protection!
Freezing temperatures, snow, humidity, and thermal variations can compromise the device’s proper functioning. And in an emergency, every second counts, an AED must always be fully operational, no matter the weather.

Here’s how to ensure your AED stays ready to save a life, even in the heart of a Québec winter.

The Effects of Cold Weather on an AED

AEDs are designed to withstand certain conditions, but most must be kept within a temperature range of 0°C to 50°C.

Below that threshold, several issues may occur:

• Reduced battery performance, which can lower the device’s autonomy.

• Frozen or hardened pads, which may affect adhesion and shock effectiveness.

• Condensation and humidity, which can damage internal electronic components.

In other words, an AED exposed to cold weather without proper protection may become unusable at the exact moment it’s needed most.

Indoors: A Temperature-Controlled and Accessible Location

If your AED is stored inside a building (business, school, community center, etc.), make sure it is placed in a temperature-stable, dry, and easily accessible location.

• Avoid areas near exterior doors or windows, where drafts can affect the device’s temperature.

• Install it at visible height, in a clearly marked location, and regularly check the status indicator light to confirm it’s operational.

In a Vehicle

Some emergency teams or businesses keep an AED in their vehicle. If that’s your case:

• Avoid leaving it in the trunk, where temperatures can drop quickly.

• Store it in an insulated bag and keep it in the cabin during very cold weather.

• Check the device and its batteries frequently, especially during extreme cold spells, to ensure they remain within the recommended temperature range.

Outdoors: Choose a Heated Cabinet

For AEDs installed outdoors, a heated and well-insulated cabinet is essential. This type of equipment helps maintain an optimal temperature and prevents components from freezing. Models such as AIVIA and ARKY are known for their weather resistance and integrated heating systems.

Made from robust polycarbonate or stainless steel, these cabinets:

• Maintain internal temperature above freezing.

• Protect against snow, rain, and humidity.

• Offer high visibility thanks to clear markings, lighting, or distinctive design.

• May include an opening alarm for added security and quick access during emergencies.

Tip: Ensure the cabinet is installed in a visible and accessible location, away from direct sunlight and snow accumulation.

Maintenance and Regular Checks

During winter, more frequent checks of your AED and its environment are recommended.
Here’s what you should monitor:

• Status indicator light: should confirm the AED is ready for use.

• Condition of the pads: ensure they’re not rigid or peeling.

• Integrity of the casing: no condensation, frost, or water infiltration.

• Cabinet temperature: must remain within the recommended range.

• Battery: monitor its expiration date and remaining charge.

These simple preventive actions ensure your AED is always ready to function—whatever the conditions may be.

In Summary

Québec winters are harsh, but with a bit of care, your AED can handle them!
Whether stored indoors, in a vehicle, or outdoors, the key is proper insulation, stable temperature, and regular inspections.

A well-protected defibrillator is a reliable, effective device—always ready to save a life!