Best whole house surge protector

8 Best Whole House Surge Protector 2023 [Top Picks & Buying Guide]

When you buy a whole-house surge protector, you want one that’s good quality, easy to configure and that will last a long time.

I looked at more than 15 models and settled on the Siemens FS140 which features a simple setup, good surge protection, and extended warranties.

I tested that with 20-amp outlets and 1/4-inch-thick surge-suppressing drywall enclosures. I connected 15 5-amp outlets to a computer running a continuous baseline load.

The baseline load can simulate a good-sized household when plugging in multiple appliances and running lights, computers, chargers, appliances, and TV sets.

The surge suppressors I test have to pass this test before they can move on to the next test. After subjecting them to a different set of tests, I identified the surge suppressors that passed my toughest standards.

Our Top Pick

Siemens FS140 Whole House Surge Protection

This top-of-the-line surge protective device is designed to meet designated protection requirements, ensuring that your home is protected from damaging electrical surges.

Safe and Sound: A Comprehensive Guide to Buying a Whole House Surge Protector

Energy Absorption

When it comes to surge protectors, the joule rating is a crucial factor that you should consider. This rating represents the amount of energy the device can absorb.

A higher value indicates better quality. Think of it as a wall that stops any additional force from entering. If the number is higher, the surge protector can withstand more powerful hits from one or multiple events before failing.

A surge protector rated at 500 joules can theoretically handle ten strikes of 50 joules, four strikes of 125 joules, or two strikes of 250 joules.

Devices with a joule rating of less than 1000, such as lamps, radios, and battery chargers, are safe to use. However, for electronic devices, I highly recommend you choose surge protectors with a rating of 1000 joules or higher.

To protect your pricey kitchen gadgets or other modest home appliances, choose suppressors that guard against 1000 joules.

For your office equipment, a surge suppressor with a rating between 1000 to 2000 joules is ideal.

If you’re working in the garage or workshop with power tools, make sure to use a surge suppressor with a rating of 1000 to 2000 joules.

It’s best to use a surge suppressor with a joule rating of 1000 or more. Don’t take any chances with these expensive items!

Clamping Voltage

It’s important to pay attention to the voltage at which MOVs conduct electricity to the ground line. This value is known as the clamping voltage.

A lower clamping voltage is better for safety. The UL rating provides three different levels: 330V, 400V, and 500V.

Clamping voltages above 400V are typically unsafe. As the clamping voltage drops, the surge protector’s ability to handle high-voltage spikes decreases.

That’s why it’s preferable to choose a surge protector with a clamping voltage of 330V (the best option).

In a higher clamping voltage, the surge protector will allow a larger surge or spike to occur before taking action. It can potentially damage your components.

So, it’s important to choose a surge protector with a lower clamping voltage to ensure better protection.

Response Time

The response time is a crucial factor in determining how effectively surge protectors can divert excess voltage. The response time is measured in nanoseconds.

It refers to how quickly a surge protector can react to an electrical surge. Although electronics might appear to operate instantly, they do take some time to function.

The clamping voltage and response time are closely related to each other. Lower response times allow surge protectors to activate rapidly. It also allows redirecting excess voltage before it damages the connected device.

For optimum protection, I recommend you choose a surge protector with a response speed of one millisecond or less.

It’s important to note that even the best surge protectors cannot offer instantaneous protection. There is a slight delay between the power surge onset and the surge protector activation.

A surge protector with a response time of one millisecond or less is ideal for maximum protection.

UL Certified

It’s essential to make sure the surge protector you choose meets the safety standard UL 1449. This is an industry-recognized standard.

The certification criteria include design requirements and product performance testing. Manufacturers must adhere to it before selling their surge protectors to the public.

It’s crucial to look for clear labeling on the packaging indicating compliance with UL 1449. Without this indication, it’s likely that the surge protector won’t effectively shield your electronics from power surges.

So, take the time to ensure that your surge protector meets the necessary safety standard to protect your electronics from unexpected electrical surges.

8 Best Whole Home Surge Protectors Review

1. Intermatic IG2240

Intermatic IG2240 Whole House Surge Protector

The Intermatic IG2240 SmartGuard breakers offer you protection for residential, commercial, and industrial HVAC equipment feeder systems. They come with six customizable modes of protection to fit your specific requirements.

Intermatic used metal and TPMOV technology to construct these surge protectors. It provides ultimate power quality, voltage regulation, and surge suppression. Traditional MOVs are also included for extra protection.

You’ll always know the status of your unit thanks to the LED indicator light that blinks and flashes. Additionally, the built-in Diagnostic Response System (DRS) will indicate an overload. It will also sound an alarm when a problem is detected.

The protection status panel has lights that quickly show whether the power is on or off. That makes it easy for you to protect HVAC equipment, electric water heaters, appliances, electrical panels, computers, and peripherals.

With transient voltage suppressor (TVS) based surge protection, these breakers offer you clean power and energy savings. They’re UL 1449 3rd edition certified and meet 2013 NEC revisions.

Overall, the Intermatic IG2240 SmartGuard breakers are an excellent choice for protecting your valuable equipment.



  • Easy to install.
  • Made with heavy steel.
  • Perfect for house and garage use.


  • Pigtail was not wired compliant with the NEC code.
  • Little more expensive than others.

2. Eaton Chspt2ultra Ultimate Surge Protection

Eaton Chspt2ultra Ultimate Surge Protection

The Eaton CHSPT2ULTRA Type 2 AC power protector is a convenient device to safeguard your home appliances from power surges.

The CHSPT2ULTRA comes with an LED that provides vital information about your protector. The green LED indicates if the surge suppressor is working correctly. The red LED alerts you if there are dangerous or unsolicited voltage fluctuations in your power line.

This surge protector not only protects a few gadgets in your home but also safeguards appliances with motor-operated internal parts from power surges. With the third edition of UL 1449 certification, you can easily plug it into your wall outlet.

The installation is fairly easy with the four pre-wired leads that come with different lengths. You’ll also find three upturned knock-outs for connection points at the base, top, and side.

Say goodbye to energy spikes. Simply mount the device and enjoy peace of mind knowing that all of your devices are safe.



  • Average good price.
  • The crafting procedure is quite simple.
  • UL certification ensures better protection.
  • Excellent surge protection capacity.
  • NEMA type 4 is perfect for indoor and outdoor use.


  • The flush mount kit includes short 1/4 screws.
  • Hotwires are not long enough.

3. Siemens FS140

Siemens FS140 Whole House Surge Protection

The Siemens FS140 is a top-of-the-line outdoor surge protector. It provides comprehensive protection for your home against most spikes or power surges.

With its three levels of protection, this model can easily match your needs. It can also ensure complete coverage for all your electronics at home, outdoors, and in the office.

What sets the Siemens FS140 apart is its 60 Hz system voltage. It is perfect for when lightning strikes nearby or surges from other sources cause power outages.

Additionally, it features color-coded LED lights that change according to the level of surge activity.

The Siemens FS140 is compatible with other electrical brands that have a voltage of 120 volts. But, they must have 3, 4, or 5 outlets.

It has a NEMA 4X grade. This grading is ideal for outdoor applications such as in-weather deck equipment and outdoor power. You can easily mount the unit on a wall or a pole.

The surge protector comes equipped with a resettable circuit breaker. It also has a shorting type RJ11 telephone/modem surge protector.

Its coaxial system protection fully safeguards your devices when lightning strikes nearby. The Siemens FS140 protects computers, laptops, printers, routers, and all of your home office equipment.

You can count on the Siemens FS140 to protect your TV, cable box, satellite receiver/DVR, and all of your A/V components. You can also keep your garage door opener and home security system safe and secure with this single outdoor protector.

With the advanced features and capabilities of the Siemens FS140, you can rest easy knowing that your electronics and appliances are protected against power surges and spikes.



  • Highest protection ratings
  • Well constructed and looks nice.
  • It’s really fast and provides different levels of protection.
  • Easy to install and use
  • Lightweight and compact.


  • The price is too high compared to other surge protectors of the same quality.

Another model of this brand

Siemens Boltshield Plug-in Surge Protection Device

Siemens Boltshield Plug-in Surge Protection Device

With a surge current rating of 65kA, it provides the best protection from both externally and internally generated surges when located as close to the building distribution system as possible.

4. Square D by Schneider Electric HEPD80

Square D by Schneider Electric HEPD80

The Square D home surge protector offers you reliable protection against power surges by safeguarding all connected wiring.

It’s designed to accommodate multiple devices, even those that are offline. It features a metal-oxide varistor that shields the unit from electrostatic build-up.

You’ll also appreciate the LED indicator that confirms the surge protector is functioning correctly.

This device boasts an 80 kA surge current rating. It has a NEMA 4x rating, making it more effective than a standard surge protector. Furthermore, it holds a UL rating and a 1449 3rd edition protection rating.

Installing the Square D HEPD80 is a breeze, and it provides peace of mind to homeowners. However, if you wish to protect your entire panel, connecting it to a breaker is advisable.

By doing so, you can ensure that this device will protect all electronics in your home network, such as TVs, DVD players, satellites, and more.

This home surge protector is perfect for 200-amp residential panels. But, it may not be suitable for 15-amp panels due to its high wattage.

The device is suitable for both indoor and outdoor use. It performs reliably in all weather conditions.



  • The OK indicator works excellently.
  • Well to mount.
  • Easier to install. You can do it if you have little electrical knowledge.
  • The metal cabinet is strong and durable.
  • It has excellent Tri-mode protection.


  • Customer service is not good.

Another model of this brand

Square D – QO2175SB QO SurgeBreaker

With a surge current of 22.5kA and an AC voltage rating of 120/240V, this 1-phase, 3-wire product is a must-have for any homeowner looking to safeguard their appliances and electronics.

5. Eaton BRSURGE Br Series

Eaton BRSURGE Br Series Whole-Panel Surge Protector

The Eaton BRSurge Br line surge arrester is a top-notch option.

The product has sturdy ABS plastic. It boasts an impact-resistant design that ensures maximum protection for your devices. ABS material is renowned for its fire-retardant properties.

You can easily connect it with 120/240 voltages. That makes it suitable for both home and commercial use. This device can handle up to 18,000A and keeps your equipment safe from even the most severe power surges.

It is easy to install and has adjustable mounting options. With superior protection at every outlet in the electrical panel, this device is always handy when you need it the most.

If you combine it with Eaton’s BRSURGE Br Series whole-panel surge protection, this device can prevent downtime on construction sites. It can also safeguard critical electronics in residences and businesses.

You can mount this breaker in two ways – panels and clip-on. Its compact design ensures it won’t look out of place in your home.

Its voltage-sensing feature quickly interrupts power to connected devices when mounted on any metallic surface. In summary, the Eaton BRSurge Br line surge arrester is a reliable and easy-to-use device.



  • Lightweight, good protection, easy installation.
  • Compared to other surge protectors, this one is more affordable.
  • Great for built-in electrical panels.
  • Impact-resistant ABS material.
  • Fire retardant properties like most surge protectors.


  • You have to open the breaker cover to see the indicator signal light.

6. Leviton 51120-3 120/208 Volt 3 Phase WYE Panel Protector

Leviton 51120-3 120/208 Volt 3 Phase WYE Panel Protector

Leviton’s 3-phase WYE panel protector can be a great option. You can use it in both commercial and residential electrical systems.

This innovative product offers real-time diagnostic indicators to alert users of potential problems. Thus, they prevent any damage to connected appliances or computers.

If you pair it with Decora home controls, this device will maintain its efficiency in any outdoor environment. It uses two-way data synchronization for this purpose.

The surge protector has a resilient J-Box metal and UL 1449 standards certification for both domestic and commercial use. The Leviton 51120-3 is the ultimate solution for protecting your property from high-voltage circuit overloads.

It also provides NEMA 1-grade protection. So, don’t take any chances with your property – invest in the best with Leviton 51120-3!



  • Menaul book’s guide is supper for easy self-installation.
  • Works without issues.
  • Perfect for protecting any type of device.
  • NEMA 1-grade protector.
  • Sleek and well-designed.


  • Expensive.

A similar model of this brand

Leviton 51120-1 120/240 Volt Panel Protector

With its 4-mode protection, this panel protector offers maximum protection against power surges, ensuring the safety of your valuable electronic equipment.

7. Panamax SEP200 Home Surge Protector

Panamax SEP200 Home Surge Protector

Panamax is a premier brand in the world of surge protection.

This home surge protector has 3 AC outlets. That makes it easy to plug in devices like printers, microwaves, and televisions. It’s the ultimate solution for safeguarding your home’s dual-voltage appliances.

With ANSI C62.41 requirements, it has a 400 amp capacity. The voltage protection ratings of this product are 700V LV and 800V NG.

It’s incredibly easy to install and use, which ensures you years of protection for your appliances. Plus, the connector panel allows for a permanent connection. It protects your devices even when they’re not plugged in.

Experts listed it in the UL and cUL for added quality assurance. This surge protector also features a visual green line surge protection indicator. It helps you to see the protection of your electronics at a glance.

It is compliant with UL 1449 3rd Edition and the NEC Codes. That makes the model suitable for both indoor and outdoor use.

It comes with a full manufacturer’s warranty to protect you against defects. It’s super user-friendly for its resetting breeze.



  • Ideal for areas where strong surges or spikes are common.
  • Straightforward to install.
  • Can be used with any type of circuit.
  • Simple and effective.


  • Outside of the box, mounting is required.

8. PFC whole house surge protector for 200 amp service

PFC whole house surge protector

PFC whole house surge protector

Kvar Energy Saving Whole House Surge Protector, Save Up to 25% on your Electric bill.

If you’re looking for an affordable way to take advantage of PFC technology, look no further than this compact PFC unit.

It includes a whole-house surge protector along with the PFC technology. It can protect 200-amp services. It makes the surge protector suitable for large homes and motor-driven appliances.

You can use this device to improve the efficiency of your electrical system.

In devices like motors and lighting, it fine-tunes the current flow. In this way, it can optimize AC-Dc conversion. This results in significant energy and cost savings.

One of the biggest benefits of this unit is its ability to protect your devices from power surges. This is particularly important if you have an Alexa-enabled device or any other digital device. This unit is the best surge protector you can buy for these types of devices.

Overall, if you want to save money on your energy bills, and protect your devices from power surges, this compact PFC unit is an excellent choice.



  • Suitable for external use
  • Increases the life of the inductive equipment
  • Reduce consumption of electricity
  • Protects against power surges
  • Easy to install.


  • No major cons.

Whole House Surge Protector Installation – Things to Know

You can complete the relatively simple task of installing a whole-house surge protector on your own without hiring an electrician. But, there are a few things you should be aware of before continuing.

Your surge protector should be mounted high and accessible on a wall. Before beginning the installation procedure, be sure to carefully read the instructions.

Remember to cut off the electricity before beginning the installation.

You can buy a special outlet box, which is required for some models, from any home improvement retailer. You may need more than one of these, depending on how many outlets you need to install.

Keep in mind that while the power is on, you should never touch or try to connect to your surge protector. This carries a high risk of harm. Grounding cables follow the same rules.

It’s best to thoroughly read the directions and take your time installing them in order to ensure safety and effectiveness.

Frequently Asked Questions

How Long Does A Whole House Surge Protector Last?

There is no definite answer to this. The life of a surge protector depends on how much power it has to stop as well as the quality of the parts used.

Does A Whole House Surge Protector Work Even If The Power Is Out?

Yes, they work even when the power is off.  This is because they monitor the power and not the lights. That’s why surge protectors should always be installed high up and not near any plug outlets.

How Often Should I Replace My Surge Protector?

You probably don’t need to replace your surge protector unless it’s getting old and not working as well anymore. If you still think that it’s time to get a new one, you should check the quality of your old surge protector.

Do These Companies Honor The Warranties?

Yes, they do. You can e-mail them or call customer service to ask about your warranty if it’s still valid.

How Much Does It Cost To Install?

If you are hiring an electrician, the costs depend on where you live.  For example, in some areas, they can charge up to $100 per hour.  There are some electricians who charge by the job instead of an hourly rate though.

What Is A Ground Fault And How Does It Relate To Whole House Surge Protectors?

If the device has a ground fault, it means that there is an imbalance in the current. This does not mean that your house surge protector is not working. It just means that there is a problem with the wiring to your home or an appliance somewhere along the line.

Bottom Line

A whole-house surge protector is an investment in protecting your home’s appliances and electronics from power surges.

It’s a proactive measure that can save you from costly repairs and replacements in the long run. While it may require a professional installation, the peace of mind it provides is worth the expense.

Overall, investing in it can help you avoid the inconvenience and expense of power outages or damaged appliances due to power surges.

I trust that the information provided has been informative and will assist you in making a wise decision.

Our Top Pick

Siemens FS140 Whole House Surge Protection

This top-of-the-line surge protective device is designed to meet designated protection requirements, ensuring that your home is protected from damaging electrical surges.

5/5 - (1 vote)

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