For most homes, a whole-home surge protector is a sensible layer of protection, and it matters more as you add expensive electronics like an EV charger, a heat pump, or a smart panel. In Oregon it isn't required for existing homes today, but Oregon's electrical code is set to require surge protection on new dwelling services starting October 1, 2027.
Below are the questions homeowners in Beaverton, Portland, Milwaukie, Clackamas, and nearby cities ask us most, with straight answers. If you already know you want one, see our whole-home surge protector installation service or call (971) 410-7073 to book.
What is a whole-home surge protector?
A whole-home surge protector is a device an electrician installs at or next to your electrical panel. When a voltage spike comes in, it diverts the extra energy to ground before it travels down your circuits to the things you've plugged in or hardwired.
The electrical code calls it a surge-protective device, or SPD, and sorts them by where they go:
- Type 1 devices are permanently connected and can be installed on the supply side of your main breaker, for example at the service.
- Type 2 devices are permanently connected on the load side of the main breaker, usually in or right beside the panel.
- Type 3 devices are point-of-use protectors, like a good plug-in surge strip.
A "whole-home" surge protector is a Type 1 or Type 2 device. Plug-in strips are Type 3.
What does a whole-home surge protector actually protect?
It protects everything fed from the panel, including equipment you can't plug into a surge strip. That's the main reason to have one. Hardwired equipment has no other easy way to get surge protection.
In a typical Portland-area home, that includes:
- EV chargers. A hardwired Level 2 charger is an expensive piece of electronics on a 240-volt circuit.
- Heat pumps and furnaces. Modern heat pumps, air handlers, and variable-speed systems have control boards that don't like voltage spikes.
- Smart and SPAN panels. A smart panel is itself electronic, and it's managing the rest of the house.
- Major appliances, including refrigerators, ranges, washers, dryers, and dishwashers, which all have electronic controls now.
- Things that don't plug in at all: smoke and CO alarms, GFCI and AFCI breakers, garage door openers, well and sump pumps, and lighting controls.
Not every surge comes from a storm. Spikes can come in from the utility side, and smaller ones can start inside the house when big motors and compressors switch on and off. A panel-level device helps with both.
Do I need one if I'm adding an EV charger or a heat pump?
You don't have to have one, but it's worth considering, because those are some of the most expensive electronic loads in a home and they're hardwired. The best time to add one is while an electrician is already working in your panel for the charger or heat pump circuit.
If you're adding an EV charger, start with whether your panel needs an upgrade first. A surge protector also needs breaker space or a spot right beside the panel, so it's good to plan for it at the same time.
Should I add surge protection when I upgrade my panel?
Yes, this is the easiest time to do it. The panel is open, the work is already permitted, and the device can be installed as part of the new service or panel instead of as a separate visit.
If you're weighing an upgrade, our guide to signs you need an electrical service upgrade explains the difference between a panel replacement and a full service upgrade, and our electrical panel upgrade service covers how we do the work. If you're considering a smart panel, read our smart electrical panel guide. Ask us whether the model you're looking at has surge protection built in or needs a separate device.
Is a whole-home surge protector required by code in Oregon?
Not for existing homes right now. The national model code, NEC 230.67, has required surge protection on services that supply homes since the 2020 edition. Oregon writes its own amendments, though, and it hasn't adopted that section yet.
Here's where things stand as of October 2026:
- Oregon's current code is the 2026 Oregon Electrical Specialty Code, which took effect October 1, 2026 and is based on the 2026 NEC.
- In that code, Oregon lists NEC 230.67 as not adopted for now. It says the main surge protection requirements for services, 230.67(A), (B), (C), and (E), become effective October 1, 2027.
- Those sections call for a Type 1 or Type 2 SPD that is part of the service equipment or right next to it, rated for a nominal discharge current of at least 10kA.
- Oregon chose not to adopt 230.67(D), the part of the national code that applies the rule whenever service equipment is replaced. So how the 2027 requirement applies to a panel replacement or upgrade on an existing home is something to confirm for your specific project. We'll tell you what applies to yours.
- Oregon is treating feeder surge protection, NEC 215.18, the same way: not adopted now, with the main requirements effective October 1, 2027.
Code rules change, so we check the current Oregon requirements for every job.
What won't a whole-home surge protector do?
It won't make your home lightning-proof. A direct lightning strike to your house or service can overwhelm any surge protector. Lightning protection systems are a separate thing. A whole-home device is designed for the much more common surges that come in on the power lines or start inside the house.
It also isn't a replacement for good point-of-use protection. Keep using quality plug-in surge strips for computers, TVs, gaming consoles, and networking gear. The panel device handles the big hit, and the strip adds a second, closer layer. Surges can also come in on cable, phone, or internet lines, which a panel device doesn't cover.
And it doesn't fix underlying problems. A surge protector depends on proper grounding and bonding, so an electrician should check those when installing it.
Can I install a whole-home surge protector myself?
Please don't. Installing one means working inside your electrical panel, where the service conductors stay energized even with the main breaker off, and getting the connection, breaker size, and grounding wrong can leave you unprotected or create a hazard. In Oregon, this is work that needs an electrical permit and inspection. Portland, for example, lists installing or changing any hard-wired electrical system as work that requires a permit.
Leave it to a licensed electrician. We pull the permit, install the device to the manufacturer's instructions and the current Oregon code, and test it before we leave.
How do I know if it's still working?
Most whole-home surge protectors have indicator lights that show whether they're still protecting. If yours are visible without opening anything, glance at them now and then, and especially after a big storm or a power event. If the light shows the device is no longer protecting, call to have it checked and replaced if needed.
Frequently asked questions
Do I need a whole-home surge protector?
For most homes it's a worthwhile layer of protection, especially if you have an EV charger, a heat pump, a smart panel, or other expensive hardwired equipment. It isn't required for existing Oregon homes today.
Does Oregon require a surge protector when I upgrade my electrical panel?
Not under the current 2026 Oregon Electrical Specialty Code. Oregon plans to require surge protection on dwelling services starting October 1, 2027, but it hasn't adopted the national code's provision that applies the rule whenever service equipment is replaced. We confirm what applies to your project.
Will a whole-home surge protector protect my EV charger and heat pump?
It helps protect them, along with other hardwired equipment, from surges coming through your electrical service. No device can promise protection from every event, especially a direct lightning strike.
Do I still need plug-in surge strips with a whole-home surge protector?
Yes, for sensitive electronics like computers, TVs, and networking gear. The whole-home device is the first layer, and plug-in strips are a second layer closer to the equipment.
Can a homeowner install a whole-home surge protector?
We strongly advise against it. It's work inside a live electrical panel, and in Oregon it requires an electrical permit and inspection. Have a licensed electrician install it.
When is the best time to add one?
When an electrician is already in your panel, such as during a panel or service upgrade, an EV charger installation, a heat pump installation, or a smart panel installation.
Book a whole-home surge protector installation
Call Nexus Electrical Group at (971) 410-7073 to book. We're licensed in Oregon (CCB #226988), and our electricians bring more than 30 years of experience. We can add surge protection on its own or alongside a panel upgrade, EV charger, or heat pump circuit. Learn more on our whole-home surge protector installation page.
We serve homeowners in Beaverton, Portland, Milwaukie, Clackamas, Lake Oswego, Happy Valley, and West Linn.
Nexus Electrical Group · 3075 SW 185th, Beaverton, OR 97006 · (971) 410-7073 · Oregon CCB #226988