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Whole House Surge Protectors

10 Best Whole House Surge Protectors 2026 in the United States

#1

Winner

10.0 score

Eaton CHSPT2ULTRA Ultimate Surge Protection 3rd Edition, 2.38" Length, 5.25" Width 7.5" Height

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Eaton CHSPT2ULTRA Ultimate Surge Protection 3rd Edition, 2.38" Length, 5.25" Width 7.5" Height

Eaton

10.0 score

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The EATON CHSPT2ULTRA Ultimate Surge Protection system is designed to provide high-level surge protection for various environments, including offices, restaurants, and homes. One of its main strengths is the universal compatibility, allowing it to connect easily to any manufacturer's load center or breaker box, making installation straightforward for most users. The device has a solid surge protection rating.

Rating
10.0
Chosen by1,228
Surge Protection Rating (Joules)
Warranty

Most important from
2827 reviews

Surge Protection Rating (Joules)
The EATON CHSPT2ULTRA offers impressive protection, with one user noting it provides 'more than 20 times the protection of the 5K device installed by the electrician.'
Warranty
A user highlighted the device's effectiveness in preventing damage from power surges, stating it helped protect their appliances after multiple surges during storms.
#2
9.1 score

Intermatic IG2240-IMSK Advanced Surge Protection with Easily Replaceable IMODULES - Intermatic Smart Guard IG2240-IMSK Whole Home Surge Protector, Black

Intermatic IG2240-IMSK Advanced Surge Protection with Easily Replaceable IMODULES - Intermatic Smart Guard IG2240-IMSK Whole Home Surge Protector, Black

Intermatic

9.1 score

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The Intermatic IG2240-IMSK Whole House Surge Protector is a robust choice for anyone looking to protect their home appliances and electronics from electrical surges. It offers six modes of comprehensive protection, powered by TPMOV surge protection technology, making it highly effective in safeguarding a wide range of devices. One of its standout features is the easy maintenance facilitated by the replaceable IModules. These modules come with LED indicators for quick status checks and can be easily swapped out without replacing the entire unit, thanks to the convenient module power switch.

Rating
9.1
Number of Modes of Protection

Most important from
307 reviews

Number of Modes of Protection
The unit comes with everything needed for mounting and offers three-way protection for both 110-volt legs to ground and across 220-volt lines.
#3
8.2 score

SIEMENS BOLTSHIELD Plug-in Surge Protection Device 2-Pole 65kA 120/240V, 1Ø, 3W

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SIEMENS BOLTSHIELD Plug-in Surge Protection Device 2-Pole 65kA 120/240V, 1Ø, 3W

SIEMENS

8.2 score

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The Siemens BoltShield Plug-in Surge Protection Device is a solid choice for whole-house surge protection, particularly suited for homeowners using Siemens panels. This device boasts a substantial 65kA surge current rating, which means it can handle a large surge of electrical energy, protecting your home effectively. Additionally, it supports a high short circuit current rating of 200kA, indicating robust durability under severe conditions. The I-nominal rating of 20kA is also impressive, offering good capacity under repeated smaller surges over time.

Rating
8.2
Clamping Voltage

Most important from
462 reviews

Clamping Voltage
Though more expensive than the entry-level model, this version offers twice the surge protection and lower clamping voltages.

Top 10 Best Whole House Surge Protectors 2026 in the United States

#1

Winner

10.0  score
Slide 1

Eaton

Eaton CHSPT2ULTRA Ultimate Surge Protection 3rd Edition, 2.38" Length, 5.25" Width 7.5" Height

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10% OFF

Chosen by 1228 this week

#2
9.1  score
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Intermatic

Intermatic IG2240-IMSK Advanced Surge Protection with Easily Replaceable IMODULES - Intermatic Smart Guard IG2240-IMSK Whole Home Surge Protector, Black

Number of Modes of Protection: six
Warranty: 10 years

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#3
8.2  score
Slide 1

SIEMENS

SIEMENS BOLTSHIELD Plug-in Surge Protection Device 2-Pole 65kA 120/240V, 1Ø, 3W

Maximum Surge Current: 65kA

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9% OFF
#4
7.9  score
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SIEMENS

Siemens FS100 Whole House Surge Protection Device Rated for 100,000 Amps

Maximum Surge Current: 100,000 Amps
Warranty: 10-year

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#5
7.6  score
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Schneider Electric

Square D by Schneider Electric HOM2175SB Homeline SurgeBreaker, Surge Protection Device, 25kA, 120/240V, 1-Phase, 3-Wire

Maximum Surge Current: 25kA

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#6
7.6  score
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Leviton

Leviton Type 2 Surge Protective Panel, 208Y/120 VAC, Three Phase WYE, 130kA per Phase, B3120-YB

Maximum Surge Current: 130,000 amps per phase

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#7
7.6  score
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Schneider Electric

Square D HEPD80 Universal Whole House Surge Protection Device, 1-Phase, 3-Wire for 120/240V, 80kA

Clamping Voltage: 600 Volts
Maximum Surge Current: 80kA
Warranty: 5 year

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#8
7.3  score
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SIEMENS

Siemens QSPD2A035B 35 KAmp BoltShield Indoor Surge Protective Device

Maximum Surge Current: 35kA per phase

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14% OFF
#9
7.3  score
Slide 1

Intermatic

Intermatic IG1240RC3 Whole Home Type-1 or 2 Surge Protection Device,Gray

Response Time: reasonable
Number of Modes of Protection: multiple
Warranty: Replace product

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#10
7.0  score
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Furniqro

Furniqro FHSPD108S Whole House Surge Protector for 108,000 Amps, Ultimate Surge Protection, Whole Home Surge Protector for Indoor/Outdoor Use, 120/240V

Maximum Surge Current: 108,000 amps

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Buying Guide for the Best Whole House Surge Protectors

Choosing the right whole-house surge protector is crucial for safeguarding your home’s electrical system and all connected devices from power surges. Power surges can be caused by lightning strikes, power outages, or even the operation of high-power electrical devices. A whole-house surge protector is installed at your electrical panel and provides a first line of defense against these surges. To make an informed decision, you need to understand the key specifications and how they relate to your specific needs.
Surge Protection Rating (Joules)The surge protection rating, measured in joules, indicates the amount of energy the surge protector can absorb before it fails. This is important because a higher joule rating means better protection for your home. Typically, surge protectors range from 1,000 to over 4,000 joules. For basic protection, a rating of 1,000 to 2,000 joules is sufficient. For more comprehensive protection, especially in areas prone to frequent surges or lightning strikes, look for a rating of 2,000 to 4,000 joules or higher. Consider your local weather patterns and the sensitivity of your electronic devices when choosing the right rating.
Clamping VoltageClamping voltage is the voltage level at which the surge protector starts to divert excess electricity away from your devices. Lower clamping voltage means better protection, as the surge protector will activate sooner. Common clamping voltages are 330V, 400V, and 500V. For most homes, a clamping voltage of 330V is ideal as it offers the best protection. However, if you have particularly sensitive electronics, you might want to opt for the lowest clamping voltage available.
Response TimeResponse time refers to how quickly the surge protector reacts to a power surge. Faster response times mean your devices are protected more quickly. Most whole-house surge protectors have response times in the nanosecond range. While the difference in response times may seem negligible, opting for a surge protector with the fastest response time available can provide an extra layer of security for your sensitive electronics.
Maximum Surge CurrentMaximum surge current, measured in kiloamperes (kA), indicates the highest surge current the protector can handle. This is important because it determines the protector's ability to withstand large surges. Whole-house surge protectors typically range from 10kA to 100kA. For most homes, a surge protector with a rating of 20kA to 50kA is sufficient. However, if you live in an area with frequent lightning storms or power surges, consider a protector with a higher rating, such as 80kA or 100kA.
Number of Modes of ProtectionModes of protection refer to the different pathways through which the surge protector can divert excess electricity. Common modes include L-N (Line to Neutral), L-G (Line to Ground), and N-G (Neutral to Ground). More modes of protection mean better overall coverage. A good whole-house surge protector should offer at least three modes of protection. If you have a complex electrical system or highly sensitive equipment, look for a surge protector with additional modes to ensure comprehensive protection.
WarrantyThe warranty provided by the manufacturer can give you an idea of the product's reliability and the company's confidence in its performance. Warranties can range from a few years to a lifetime. A longer warranty period is generally better, as it indicates the manufacturer’s commitment to the product’s durability. When choosing a surge protector, consider one with a warranty that covers both the device and any connected equipment, providing you with peace of mind in case of a surge.

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