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Whole House Surge Protectors

10 Best Whole House Surge Protectors 2025 in the United States

#1

Winner

9.8 score

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

47%OFF

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

Eaton

9.8 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
9.8
Chosen by1,430
Surge Protection Rating (Joules)
Warranty

Most important from
2680 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
9.6 score

Siemens Boltshield FSPD140 Level 2 Whole House Surge Protection Device Rated for 140,000 Amps, 120/240V

Siemens Boltshield FSPD140 Level 2 Whole House Surge Protection Device Rated for 140,000 Amps, 120/240V

SIEMENS

9.6 score

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The Siemens Boltshield FSPD140 Level 2 Whole House Surge Protection Device is designed to shield your home from electrical surges, making it an excellent choice for homeowners looking for robust protection. With a surge protection rating of up to 140,000 Amps, it’s capable of handling substantial power spikes, which is a significant strength for households that experience frequent electrical disturbances or are in areas prone to lightning strikes or power fluctuations.

#3
9.4 score

Siemens QSPD2A035B 35 Amp BoltShield Indoor Surge Protective Device

Siemens QSPD2A035B 35 Amp BoltShield Indoor Surge Protective Device

SIEMENS

9.4 score

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The Siemens QSPD2A035B BoltShield Indoor Surge Protective Device is designed to offer robust protection for your entire home. One of its key strengths is the 35kA surge current protection per phase, which ensures that it can handle significant power surges, safeguarding your home’s electrical appliances. Additionally, the device fits directly into existing Siemens load centers and plugs into the load center bus, making installation relatively quick and straightforward for homeowners or electricians.

Top 10 Best Whole House Surge Protectors 2025 in the United States

#1

Winner

9.8 score

Slide 1

Eaton

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

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47% OFF

Chosen by 1430 this week

#2

9.6 score

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SIEMENS

Siemens Boltshield FSPD140 Level 2 Whole House Surge Protection Device Rated for 140,000 Amps, 120/240V

Maximum Surge Current: 140,000 Amps

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#3

9.4 score

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SIEMENS

Siemens QSPD2A035B 35 Amp BoltShield Indoor Surge Protective Device

Maximum Surge Current: 35kA per phase

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#4

9.3 score

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Eaton

Eaton BRNSURGE Type BR Whole-Panel Circuit Breaker Surge Protective Device

Maximum Surge Current: 18 Kiloamps

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55% OFF
#5

9.0 score

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SIEMENS

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

Maximum Surge Current: 65kA

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Up to 45% off

#6

8.8 score

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Square D

Square D by Schneider Electric QO2175SB QO SurgeBreaker, Surge Protection Device, 25kA, 120/240V, 1-Phase, 3-Wire

Surge Protection Rating (Joules): 25kA
Warranty: 3 year Warranty

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16% OFF
#7

8.6 score

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Square D by 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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#8

8.3 score

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Square D by Schneider Electric

Square D - QO250PSPD QO Whole House Surge Protection Device, 50kA, 120/240V, 1-Phase, No Wiring, Plug-On Neutral

Maximum Surge Current: 50,000 amps per phase

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31% OFF
#9

8.0 score

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Square D by Schneider Electric

Schneider Electric – Square D HEPD Whole Home Electronics Protective Device, AC Surge Protection, Type 1 SPD, 120/240VAC, 1-Phase 3-Wire, 80kA Current

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

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24% OFF
#10

7.8 score

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Eaton

Eaton CHSPT2SURGE SPD Type 2 Chsp Whole Home Surge Protector, Nema 4, Single Phase, 120/240 Volts, Ul 1449 3Rd Edition

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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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