Can I use my air conditioner during a blackout or storm?

An air conditioner cannot run during a blackout unless it is on a suitable backup supply, and you should not connect it to a generator yourself. Storms, lightning and power returning with a surge can damage the unit. A licensed electrician can advise on protection, and damage should be checked before use.

What happens to my air conditioner in a blackout?

A power outage stops the unit. Brief outages are unlikely to hurt it, but the main concern is what happens when power returns. When the supply comes back, there can be a surge or an unstable supply, and the unit may take some time before it resumes, because many models wait a few minutes before restarting. That is a built-in protection. Use the remote or app as normal once the unit resumes, and wait rather than pressing buttons repeatedly.

Can I run it on a generator or battery?

Air conditioners draw a lot of power, especially at start-up, and they are fixed to your home’s wiring. Do not plug a unit into a generator or attempt to connect one yourself. Only a licensed electrician can advise whether a backup supply, a battery system or a generator connection suits your home, and carry out the connection safely.

Why are storms a risk?

South-east Queensland gets severe storms, and the damage can come from several sources:

• Lightning and power surges. A strike nearby can send a surge through the wiring and damage the unit’s electronics.
• Water ingress. Driving rain, flooding or damaged seals can reach electrical parts.
• Wind and hail damage. The outdoor unit and its mounting can be damaged by debris or hail.

Surge protection devices exist for homes, and a licensed electrician can advise on what is suitable. Check your home insurance policy for cover for damage caused by surges, as the Insurance Council of Australia has encouraged households to do.

Should I use the air conditioner in a thunderstorm?

Follow the manufacturer’s guidance in the owner’s manual. Many people choose not to run electrical equipment during severe storms because of surge risk. If you are concerned, a licensed electrician can explain protective options for your switchboard.

The unit won’t come back on after the power returns

This can be a protective delay, a tripped device or damage from a surge. Do not keep trying, and do not touch the switchboard or unit. Note what the display shows, and contact a licensed electrician or technician.

Will insurance cover storm damage?

It depends on your policy. Check what your insurer covers and keep photos and records of any damage. Photographs taken from a safe distance help with claims.

What will the visit involve?

A licensed electrician or technician will check the supply, the protective devices and the unit before it is used again.