Whole-Home Surge Protection: Is It Worth Installing?
Modern homes are filled with sensitive electronics — smart TVs, computers, home theatre systems, inverter air conditioners, and solar inverters, to name a few. All of these are vulnerable to power surges. Whole-home surge protection is one of the most cost-effective ways to safeguard these investments.
What Causes Power Surges?
A power surge is a brief spike in voltage that exceeds normal levels. The most dramatic surges come from lightning strikes on or near the power network, but the majority of surges are actually caused internally — by large appliances cycling on and off. Air conditioners, pool pumps, and refrigerators all generate small surges every time their motors start. Over time, these repeated spikes can degrade electronic components even without causing immediate visible damage.
How Does Whole-Home Surge Protection Work?
A surge protection device (SPD) is installed at your switchboard and acts as the first line of defence for your entire home. When voltage exceeds a safe threshold, the SPD diverts the excess energy to earth, preventing it from reaching your circuits and appliances. This is different from a power board with a built-in surge protector, which only protects the appliances plugged into it.
Is It Better Than Individual Surge Boards?
A layered approach is best. A switchboard-level SPD handles large surges from the network, while quality surge-protected power boards at individual appliances provide a second layer of protection. Relying on power boards alone leaves your fixed wiring and any hardwired appliances (air conditioning, oven) unprotected.
What Does It Cost?
A professionally installed whole-home SPD typically costs between $300 and $600 installed, depending on the type and your switchboard configuration. When you consider the cost of replacing a modern television ($2,000+), a solar inverter ($1,500+), or a home theatre system, the payback is obvious.
Leenderts Electrical installs surge protection devices across Sydney’s North Shore. Call 0407 743 963 to add this protection to your home.