How to stay safe when a heat wave and a power outage hit together: cooling a home, warning signs of heat illness, who is most at risk and what to avoid.
- Heat stroke is an emergency: call 911.
- Use shade, damp cloths and a cooler lower floor. Go to a cooling centre if you can.
- A power station can run a fan, not an air conditioner.
Why this combination is dangerous
Heat illness can develop quickly, especially for older adults, babies, people with chronic conditions and people who work or exercise outdoors. When the power fails, air conditioning, fans and sometimes water pumps stop.
Cool the home without power
- Close curtains and blinds on sun-facing windows during the day.
- Open windows at night if it is cooler outside, and close them in the morning.
- Stay on the lowest floor. Heat rises.
- Use damp cloths, cool showers and wet towels on the neck and wrists.
- Drink water regularly. Avoid alcohol and heavy meals.
Know the warning signs
- Heavy sweating, weakness
- Dizziness, nausea, headache
- Cool, clammy skin
- Confusion or passing out
- Very hot, dry or damp skin
- Very high body temperature
Move the person to a cooler place and call emergency services for heat stroke. Do not give fluids if the person is confused or unconscious.
Power and devices
- A battery fan uses far less power than any air conditioner. A power station is not practical for running an AC unit.
- Medications and insulin may need to stay cool. Ask your pharmacist.
- Check your fridge and freezer for food safety.
Never leave children, pets or anyone in a parked vehicle.
Quick answers
Who is most at risk in a heat wave?
Older adults, babies and young children, people with chronic conditions and people who work or exercise outdoors.
Can I use a power station for an air conditioner?
Usually not for long. Air conditioners draw a lot of power. Check the watts against your battery.