Air conditioner surge protection in Perth may help reduce the risk of voltage spikes damaging sensitive components, including electronic control boards, compressors and connected controllers. Dacs Air Conditioning & Electrical recommends having the property’s switchboard and air-conditioning circuit assessed by a licensed electrician before summer, particularly when the system is expensive, the switchboard is older or the property has experienced electrical disturbances.
Surge protection cannot prevent every type of damage, but it can provide an additional layer of defence for modern air conditioners and other electronics throughout the property.
Modern air conditioners contain sensitive electronics that may be damaged by electrical surges. A plug-in power board generally cannot protect a hardwired system. A licensed electrician can assess whether switchboard-mounted surge protection, a dedicated circuit or other electrical improvements are appropriate for your Perth property.
What Is an Electrical Surge?
An electrical surge is a brief increase in voltage travelling through an electrical system. Depending on its size and duration, it may stress or damage connected equipment.
Possible sources include:
- Lightning activity
- Network switching
- Power being restored after an outage
- Faults within the electrical installation
- Large electrical loads switching on or off
- Equipment failure
- External damage to electrical infrastructure
Not every outage creates a damaging surge, and not every surge causes immediate equipment failure. Some electrical disturbances may cause obvious damage, while others may contribute to component stress that is not immediately visible.
Western Power recommends surge protection in information provided to customers experiencing momentary outages, although the correct protection for an individual property requires professional assessment.
Why Are Modern Air Conditioners Vulnerable?
Modern air conditioners combine high-powered electrical equipment with sophisticated electronics.
Depending on the model, the system may contain:
- Printed circuit boards
- Inverter controls
- Temperature sensors
- Variable-speed motors
- Wi-Fi modules
- Zone controllers
- Wall-mounted touchscreens
- Communication wiring
- Compressor protection controls
These components help improve comfort, efficiency and control, but they can be sensitive to abnormal voltage conditions.
Damage is not always limited to an air conditioner that completely stops working. An electrical disturbance may also be associated with error codes, failed communication between units, intermittent operation or a damaged control board.
These symptoms can have several causes, so proper diagnosis is essential.
Is a Safety Switch the Same as Surge Protection?
No. Safety switches, circuit breakers and surge protection devices perform different jobs.
| Protective device | Primary purpose |
|---|---|
| Safety switch or RCD | Reduces the risk of electric shock by detecting current leakage |
| Circuit breaker | Protects wiring from overloads and short circuits |
| Surge protection device | Limits transient overvoltage reaching connected equipment |
| Plug-in surge board | Provides limited protection for suitable plug-connected appliances |
One protective device does not automatically perform the job of another.
A safety switch is an essential electrical-safety device, but it should not be described as dedicated surge protection. Likewise, a circuit breaker may respond to an overload or short circuit without protecting electronics from every brief voltage spike.
Can a Surge-Protected Power Board Protect an Air Conditioner?
A plug-in surge-protected power board may provide limited protection for suitable portable or plug-connected appliances. However, many split and ducted air conditioners are permanently wired into a dedicated electrical circuit.
A hardwired air conditioner cannot be protected by placing an ordinary surge board behind a television or computer. Protection for permanently connected equipment may need to be installed at the switchboard or another professionally selected location.
Large air conditioners also have electrical requirements that make ordinary household power boards unsuitable. Never use an extension lead, double adaptor or unapproved connection arrangement to power an air conditioner.
What Is Switchboard Surge Protection?
A switchboard-mounted surge protection device is designed to divert or limit transient overvoltage before it reaches equipment connected downstream.
Depending on the electrical installation, this type of protection may cover multiple circuits and appliances rather than only the air conditioner.
It may help protect:
- Air-conditioning equipment
- Televisions and computers
- Refrigerators and other appliances
- Smart-home equipment
- Alarm and security systems
- Solar-related electronics
- Internet and communication equipment
The device must be selected and installed to suit the switchboard, supply arrangement and required protection level. This work must be completed by a licensed electrician.
Surge protection devices also have limits. They do not guarantee that equipment will survive every electrical event, particularly a severe or direct lightning event.
Does Every Perth Home Need the Same Protection?
No. The appropriate solution depends on the property and its electrical installation.
A licensed electrician may consider:
- The age and condition of the switchboard
- Whether the air conditioner has a dedicated circuit
- The size and electrical demand of the system
- Existing protective devices
- Earthing arrangements
- Solar panels or battery equipment
- Sensitive electronics within the property
- Previous outages or equipment damage
- Manufacturer requirements
- The property’s location and exposure
A new air conditioner should not simply be added to an unsuitable or overloaded circuit. The installation needs the correct cable sizing, isolation, circuit protection and electrical capacity.
A Five-Minute Visual Check Before Summer
Homeowners should not remove switchboard covers or work on electrical equipment. You can, however, complete a basic visual check from a safe position.
Look for:
- A damaged or deteriorated switchboard enclosure
- Missing or unclear circuit labels
- Scorch marks or discolouration
- Cracking, buzzing or unusual heat
- Circuit breakers that trip repeatedly
- Loose or damaged air-conditioner isolators
- Signs of water entering electrical areas
- Unexplained error codes after an outage
If you notice burning smells, visible scorching, smoke, sparking or repeated tripping, turn the equipment off if it is safe to do so and contact a licensed electrician.
Do not repeatedly reset a circuit breaker without investigating why it is operating.
What Should You Do During a Power Outage?
Western Power advises customers affected by an outage to turn off appliances to help protect them when power returns. You can check the Western Power outage map or contact its faults line for information about a known interruption.
For your air conditioner:
- Turn the system off using its normal controller.
- Avoid repeatedly attempting to restart it during an unstable supply.
- Wait until power has returned and appears stable.
- Follow the manufacturer’s restart instructions.
- Allow for any built-in compressor protection delay.
- Check for error codes or unusual operation.
If the air conditioner fails to restart, repeatedly trips its breaker or behaves abnormally after an outage, arrange an assessment rather than continuing to reset it.
Is Unplugging Appliances Enough During a Storm?
Unplugging suitable portable appliances may reduce their connection to the electrical system, provided this can be done safely before the storm arrives.
This approach is not practical for hardwired air conditioners, ducted systems or appliances that must continue operating. It also relies on someone being present and responding before the electrical disturbance occurs.
Switchboard surge protection operates automatically and can protect multiple circuits, making it a more practical ongoing measure for many properties. However, it should form part of a coordinated electrical-protection approach rather than being treated as an absolute guarantee.
Why Check the Air-Conditioning Circuit in Spring?
Early spring is a useful time to inspect the air-conditioning electrical supply because the system will soon begin operating for longer periods.
A marginal connection, overloaded circuit or deteriorating isolator may become more noticeable when an air conditioner runs under sustained summer demand.
An early check gives the electrician time to assess:
- Circuit condition
- Protective devices
- Switchboard capacity
- Isolator condition
- Signs of heat damage
- Electrical connections
- Compatibility with a replacement system
- Whether additional surge protection is appropriate
This is particularly valuable when installing a larger air conditioner, replacing an older system or renovating a property.
Technician’s Tip: Record What Happened
If your air conditioner develops a problem after an outage or electrical disturbance, record as much information as possible.
Note:
- The approximate date and time
- Whether the whole property lost power
- Any error code displayed
- Whether a breaker or safety switch operated
- Any smell, noise or visible damage
- Other appliances affected
Take photographs where it is safe to do so and retain repair reports, quotations and receipts.
Western Power accepts claims in certain circumstances when loss or damage results from incorrect action or inappropriate operation of its equipment. However, claims are assessed individually, exclusions apply and supporting evidence may be required. Storm, lightning and other events outside its control may not be eligible. Refer directly to Western Power’s customer damage information for current details.
Protect Your Air Conditioner Before Perth Heats Up
Surge protection can be a sensible consideration for a modern air conditioner, but the correct solution depends on how the equipment is connected and how the property’s electrical system is configured.
A plug-in surge board does not protect a permanently wired ducted or split system. Safety switches and circuit breakers also serve different purposes from a dedicated surge protection device.
Dacs Air Conditioning & Electrical can assess the air conditioner, its electrical circuit and the switchboard as part of a coordinated approach. An early-spring inspection can identify concerns before the system begins working harder through Perth’s warmer months.
Frequently Asked Questions
Does an air conditioner need surge protection?
Surge protection is not a guarantee against every electrical event, but it may reduce the risk of transient overvoltage damaging sensitive air-conditioning electronics. A licensed electrician can assess whether it is appropriate for the property.
Will a safety switch protect my air conditioner from a power surge?
A safety switch primarily protects people by detecting current leakage. It is not the same as a dedicated surge protection device, which is designed to limit transient overvoltage.
Can I use a surge-protected power board for my air conditioner?
Many split and ducted air conditioners are permanently connected to a dedicated circuit and cannot use a plug-in power board. Large air conditioners should never be connected through an extension lead or unsuitable adaptor.
What should I do if my air conditioner stops working after an outage?
Turn the system off, check for a displayed error code and see whether a breaker has operated. Do not repeatedly reset a tripping breaker. Arrange professional assessment if the unit will not restart or operates abnormally.
Who can install surge protection at a Perth switchboard?
Switchboard surge protection must be selected and installed by a licensed electrician. The electrician should assess the switchboard, supply, earthing and connected equipment before recommending a solution.