The 10 Best Whole House Surge Protector Reviews of 2021

The best whole house surge protector is essential if you want to safeguard your appliance from electrical surges, thunder, and lightenings. It is possible to get an affordable one without breaking the bank.

In this article, you’ll see our research list of top-rated surge protectors by our experts and have formed them into reviews for you to decide which one is appropriate for your need.

Why subscribing to consumer reports’ opinions thus helps to weed out defective products while escaping wrong advertising messages. Our previous article discussed how to install a whole-house surge protector and how it works; you can read it to help you understand the different types. As we proceed in this discussion, we begin with the whole house surge protector comparison before the rest of the detail.

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Top 10 Best Whole House Surge Protector Reviews

1. EATON CHSPT2ULTRA 3rd Edition

The 10 Best Whole House Surge Protector Reviews

This is a type II model and it is designed to be installed in the circuit breaker.

I’ve installed 15 of the Eaton in the past three years, and all have been working effectively. The Eaton has 108 000 amps rating; thus, it has a degree of lightning protection as no surge can protect against direct lightning strikes. In addition, easy to install”, says Nick Vespa.

Steve Saber – says it was easy to install by him (he’s an electrician). However, for non-technicians, hire an electrician unless you’ve experienced working with electrical panels.  


  • Type II SPD
  • Install in the breaker panel
  • 240 voltage
  • Professional installation required
  • Model: CHSPT2ULTRA
  • ‎Dimension: 2.38 x 5.25 x 7.5 inches
  • Weight: 1 Pound

The Eaton guard against surges from utility lines and lighting through the earth’s crust but not for direct strikes.

Also, in the case of a power outage, if you’re to use a portable generator, ensure to turn off the surge circuit breaker. The electric current produced by generators can adversely affect surge protectors and other homes electronics due to voltage variation.

2. Leviton 51120-1 120/240 Volt Panel Protector

Leviton 51120-1 120/240 Volt Panel Protector

High voltage and lighting spikes can be destructive. Using Leviton, you can protect your computers, LCDs, and LED TVs from surges. This model combine type 1 and 2 protection. 

As type one, you can install it on the main electrical service panel to knock down surges from external sources (power lines), which is suitable for a complete building shield. Otherwise, mount it at the circuit breaker (serving as type two) protection for in-house appliances and electronics. 

It has a diagnostic indicator that shows the power and the suppression status for protected lines. Hence, with no guesswork, you’ll be able to see in real-time the performance of the Leviton surge protector.  

Should there be a surge protection failure, which affects any equipment connected to the panel during a power surge, Leviton Company will cover the cost up to $25,000 as replacement cost or for repairs – only applicable to residential.    


  • Lifetime warranty 
  • Standard metal J box enclosure 
  • Residential and commercial use
  • Real-time diagnostic indicator light 


C. Shearer says, “It has two lights such as red and green. If the red light is on, it means the device had electrical spikes or lighting hit. Otherwise, if the green light is on, everything is fine”.  

The verified owner also said he had 40 pieces (forty) of the LEVITON for over ten years (a decade) without experiencing any problem. They protected all my electrical systems from disastrous surges and spikes that can damage appliances and electrical systems in the home worth thousands of dollars.   

3. Siemens FS140 Whole House Surge

Siemens FS140 Whole House Surge

The Siemens is another electrical (voltage guard) device we recommend for a whole house. It is a type 2 model and needs to be installed into the central panel that supplies electricity to the entire house.

The Siemens is tested and listed by UL / cUL, meeting safety standards for home and residential use.

The alarm LED system informs you of the current protection level. While it offers three protection levels, each features 140,000 amps per phase protection.

The enclosure design makes it ideal for both indoor and outdoor mounting and water penetration resistance.


  • 10 years warranty
  • Commercial/ residential
  • Split phase 120 / 240 volt
  • Outdoor or indoor installation 


“As much you understand electrical wiring, it’s fairly easy to install. Also, if you’re installing on the entrance to your building, the main wires will be live; therefore, make sure you know what you’re doing and be careful; otherwise, hire an electrician for the job”. The Chad + AMDavis. 

Michael Ponce, who resides in Florida, is a proud owner of the Siemens whole house surge protector. The unit is a bit bulky but well-built and worth the money.

Important note; while installing the Siemens, do not increase the length of the wire – the longer wire decreases the protection rate, the shorter, and the better.

4. Square D – QO2175SB QO SurgeBreaker

This module is a three-phase surge breaker, best for home use. Depending on where the electric panel is mounted, you can install it indoors or outdoors.

It comes with three wires, making it less difficult to connect. One of the wires goes into the ground, and the remaining goes into the neutral box and the positive breaker. Also, compatible with 120 / 240 voltage and rates 22.5 kA (kilo amperes).

An LED indicator informs if the unit is working or not. Top of it, UL 1449 third edition listed. It is not as expensive as most of the previous units and also easy to install (but you must know how to do electrical wiring if you must do it yourself)


  • One phase design
  • UL 1449 Listed
  • three years warranty
  • An LED indicator


“After living in a house that’s always being hit by lightning every two years and subsequently followed by damages, I got Square D installed, and since then, no damages have occurred. Apart from my home, I also install it for other people”. Says Rennan.

“The surges in my house cause my AC to stop working, and this cost $1,500 to fix. My computer went off and died on another occurrence, so I immediately placed an order for this whole house surge protector. I got it installed the same day. Super easy to connect and haven’t had any issues since 2020”.   According to TxFergy.

5. Intermatic IG1240RC3 Whole Home Surge Protection Device

Intermatic IG1240RC3 Whole Home Surge Protection Device

In the demanding business age of this time, computers are one of the tools primarily used in organizations, and any slight surges could affect them, thereby grinding business activities. A power suppressor such as the Intermatic is a solution to safeguard them from irregular voltage, spikes, storms, etc.

The Intermatic can either be used as a type one or two to protect your investment from power surges. It features six protection modes, and when it is working, the green light status tells you everything is fine, while the red flag means your devices are not protected. Hence it would be best if you replaced it. Nevertheless, a new Intermatic surge can last ten years before a fault develops.

This surge protector is only used in countries whose voltage rating is 120/240 VAC and 50/60 Hz. If you’re not living in the United States and your country volt is not 240v but 110v, the Intermatic isn’t the right choice to pick. Look for a product that volt conforms to your region rating.


  • Type I and II protection
  • 120v / 240v requirement
  • Type 3R rainproof enclosure
  • Green light indicate status protection
  • cCSAus Certified


“The Seabrooks” “used it for over 11 years before it became dead. During the period, none of their equipment fried. However, order for a new replacement in February 2022”   – Lesson to learn is that the intermatic doesn’t fail quickly and optimally protects surges. Top of it, last long. Besides, it’s not expensive compared to the worth of thousands of dollars investment it’ll secure.  


6. Intermatic Ig2280-Om Surge Protector

Intermatic Ig2280-Om Surge Protector

This intermatic is specially designed for SPD type 2 panel breakers. The metal/plastic enclosure makes it safe for indoor/ outdoor application and thus protects it from the weather condition.

It is a single-phase design but has six surge protection modes such as (L1-N, L2-N, L1-G, L2-G, N-G, and L1-L2).  

The Ig2280-Om is suitable for use in countries that uses 120volts and 240volts. 

Installation is relatively easy simply by reading and following the manual, but we advise professionally hiring an electrician for a clean job.


  • 120/240v
  • Outdoor/indoor mounting
  • Type 2 SPD
  • Made In the USA
  • Waterproof protection

Research findings show that this item has only received a few customer reviews. This may be a result of the high price. Nevertheless, the Ig2280-Om won’t disappoint volt guarding your device based on research and the manufacturer’s information. 

7. Leviton 42120-1 Single Phase Panel Protector

Leviton 42120-1 Single Phase Panel Protector

If the surge suppressor you need is for commercial or industrial purposes, the Leviton 42120 is precisely for this application. Since its commercial-grade, expect to spend more than residential units that are inexpensive. The Leviton cost around $500, aside from the upfront installation expenses.

It is a 120/240volts single-phase panel protector featuring four-mode protection. Allow for surface mounting or flush mounting, but the installer needs to use flush collar accessory 42001 FMC. 

The green light will show whether your module is managing voltage fluctuation, meaning active, safe mode. Otherwise, red light means an unprotected. The alarming system will also inform you when there is any suppression issue.

The Leviton series is compatible with Decora home control and X-10 devices.


  • Commercial grade
  • Single phase design
  • 4-mode protection
  • Suppression status indicator
  • Alarm system


“I live in a hurricane-prone area. I’ve installed this module on each of my home panels. Since the installation, I never had a surge failure situation in my home”. Says CD listener. 

“This device works. It hasn’t failed me. The price was way higher but worth it”—feedback from S. Bell.

8. Morris Surge Suppressor

Morris Surge Suppressor

The Morris’s whole house surge arrestor can be installed at your electrical disconnect junction or breaker panel to safeguard incoming electricity. It is ideal for residential (such as pumps, motors, and HVAC will benefit from its protection) and commercial use. 

It features 72,000amps surge current ratings, 10,000 amps circuit current rating, and 940 joules. The whole house module offers SPD-type protection against multiple surge events of power, thunder, and lightning. 

The Morris features multiple AC protection modes to meet your residential and commercial surge suppressing demand. Thanks to the automatic reset functioning, you can also reset the Morris surge. The indicator light notifies the protection status for grounding and power.  


  • 72,000A surge rating
  • 940 joules
  • Indicator light 
  • cULus Listed
  • 120/240 VAC single phase 


“Easy to install, and I feel better now that my entire house is protected against power surges and ground-induced lightning strikes,” says RSA. 

“Worked great!” says Tina M. 

“The Surge protector worth buying by MK.” 

The feedback has been excellent, which attests to the Morris product’s effectiveness. 

One unique aspect of this module is that you can use it to protect your pump, HVAC, and some other heavy electrical in your home; otherwise, wire it for central house protection. 

9. Kvar Energy Saving and Power Factor Correction Surge Protection

Kvar Energy Saving and Power Factor Correction Surge Protection

The finding shows that the Kvar reduces heat to electrical panels and decreases amperage and low energy consumption. To add to the functionality, prevent electrical surges from happening. While the functions are much, equally means more money, you won’t spend up to $200. The Kvar is not a point-of-use module but a whole-house type that needs to be connected to your home circuit breaker control. Thus, an expert may be hired for this job.


  • Multiple function
  • 200 Amp
  • 220v single phase
  • Ul listed
  • Nema 3 rating
  • 15 years warranty

If you don’t live in the US, the Kvar is not meant for you. The requirement and voltage are for the said country standard. Failure to adhere to this warning may cause you damages.  

10. Southwire Surge Guard

Plugging your devices directly into any electrical outlet is risky for travelers, campers, and others who’re always on the journey. Since you lack knowledge of how stable the current situation of the place you go per time. It’s therefore advisable to go around with a personal (portable) surge protector. This will enable you to plug your appliance with the assurance of being protected from irregular current and other related issues.

One of the products you can be on the lookout for is the Southwire Surge Guard. This unit is 50amp rated with an LCD to show you real-time performance. Although it’s pricey for your equipment is worth the spending. If you have a mobile or motor home, this is a suitable surge protector. Though there’re other competitive brands, this is tested and has outperformed rivals of its kind. 


  • Point of use model
  • 50amp ratings
  • LCD
  • Great for travelers, campers, etc.

An Anonymous buyer said a must’ve for motorhomes and RVs. Ever since I got this surge guard, it keeps all my electrical safe from power irregularity, and I’m happy getting the value for my purchase, though pricey.

We couldn’t cover all the users’ reviews. “However, the 7 seconds delay time let me know the quality of power coming into the device and thus gives me the time to turn off the circuit breaker switch to keep my item safer – says “Anonymous.”

The southwire guard is one of the best portable surges we recommend for outdoor use. It’s compact and offers flexible mobility.

Finding Your Way for the Right Surge Protector

Shopping for the surge is not a big deal. It’s an easy process. The same approach is used to identify a good unit for residential or commercial purposes. The only help (assistance) you may need is hiring an electrician for the installation process after picking the surge you want. The criteria below are the essentials to have in mind:

  • Surge rating

All surge protectors are rated in kilo amperes (kA). The kilo Amp indicates the amount of current a particular unit can effectively manage, whether the whole house or portable model. This means surges higher than surge protector rating could damage your electronics/ appliances. 

In the case of the whole house powering, a surge rating of 50kA is not bad, but if you can spend more and get a higher rating unit, it’s worth the investment. 

  • Voltage protection rating (VPR) 

The VPR measures the amount of current that goes into your appliances after the surge has done its job. Experts recommend that end-users target surge protectors with a low VPR rating. 

  • Voltage

Every unit is designed for a particular voltage standard as this differs from country to country. Based on your country’s voltage standard, there are units of 110v, 120v, 220v, 240v, etc. Choose accordingly. 

  • Certification 

Your safety is paramount, and getting a quality product is equally another topmost priority. A certified module by an independent corporates body indicates the unit has passed a high-level quality check. Different registered companies award this requirement, and the certification is written on the unit enclosure. Be on the lookout for it. 

  • Warranty 

This is an important check, though most of the module on the market comes with a warranty. However, the security differs from one unit to the other. Check the terms and conditions covering any choice module you wish to buy. The period (years) the warranty will last before being void should be checked. 

Also, some companies won’t provide a warranty if the unit is not installed by a licensed professional. Therefore, stand the chance of losing your contract if done by you.      

Frequently Asked Questions

What does a surge protector do?

It is designed to suppress electric current fluctuation, spikes, thunder, and storms lightning’s from damaging home appliances. 

  • Is a surge protector necessary?

If you don’t’ have surge protection installed in your house, your electrical gadgets, electronics, or appliances are at risk of high or low voltage, wires, bridges, lightening, etc. One day, you may be surprised your TV, computer, LCD, or laptop didn’t come up after a heavy thunder strikes. It is, therefore, necessary to wire a surge into your building. It’s not negotiable unless you want to lose your investment suddenly.    

  • How to use a surge protector

There is no unique way to use a surge protector. If you have the whole house (type 1 and 2) model already installed, you’re free to plug your appliances with peace of mind. 

However, if your house lacks types 1 and 2, then type 3 (the portable model or point of use) is what you’ll need. This type requires you to plug it into your electrical socket before plugging any device. 

  • What appliances need surge protectors?   

Any electrical unit in the home, offices, or working environment needs protection from surges, bulbs, fans, AC, refrigerators, cookers, etc. I’m sure you know television, home theaters, and PC top the list. It’s not a bad idea if your kitchen line is protected. 

Home air improvement machines need surge protection as well. And the list includes dehumidifiers, humidifiers, heaters, oil diffusers, and evaporative coolers. 

The list is long. Hence, we advise wire your property entirely with a whole house surge for comprehensive protection. 

Where can I buy it? 

It is always wise to find surge protectors from local stores around your neighborhood. But if you’re familiar with online shopping, several wholesales dealers offer cheaper discounts. Online stores such as Walmart, eBay, Amazon, etc., are some of the trusted and reliable resources to patronize. Some of the dealers have branches in different countries. You can search within your region to avoid international shipping.  

Research scope 

Knowing how to identify the best surge protector, the scope of this study covers three years such as 2020, 2021, and 2022. It would’ve been more robust if we could increase the years to 2018, but our research’s lack of verifiable data was a deep concern. We do not want to share information we don’t have a claim. Peradventure in the future, we need to drain more resources for improved publication. Nevertheless, relying on the information provided here can help you understand a power surge and an effective device to prevent its effect on your appliances.