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10 Best Hardwired Whole House Surge Protectors 2025 in the United States
#1
Winner
EATON CHSPT2ULTRA Ultimate Surge Protection 3rd Edition, 2.38" Length, 5.25" Width 7.5" Height
The EATON CHSPT2ULTRA Ultimate Surge Protection device is designed to provide comprehensive surge protection for your entire home. One of its key strengths is its universal compatibility, meaning it can easily connect to any manufacturer's load center (breaker box), making it a versatile option for various installations.
Rating
9.9
Chosen by1,428
Surge Protection Rating (Joules)
Most important from
2679 reviews
#3
Siemens Boltshield FSPD140 Level 2 Whole House Surge Protection Device Rated for 140,000 Amps, 120/240V
The Siemens Boltshield FSPD140 Level 2 Whole House Surge Protection Device is designed to protect your entire home from power surges with a robust 140,000-amp surge current protection rating. This high surge protection rating means it can handle significant power spikes, helping to safeguard your appliances and electronics. The device operates at 120/240V, making it suitable for most residential electrical systems.
Top 10 Best Hardwired Whole House Surge Protectors 2025 in the United States
Square D by Schneider Electric HOM2175SB Homeline SurgeBreaker, Surge Protection Device, 25kA, 120/240V, 1-Phase, 3-Wire
Square D by Schneider Electric HOM2175SB Homeline SurgeBreaker, Surge Protection Device, 25kA, 120/240V, 1-Phase, 3-Wire
Surge Protection Rating (Joules): 25kA
Maximum Continuous Operating Voltage (MCOV): 120/240V
UL 1449 Rating: 3rd Edition
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#10
8.0 score
Siemens FS100 Whole House Surge Protection Device Rated for 100,000 Amps
Siemens FS100 Whole House Surge Protection Device Rated for 100,000 Amps
Number of Modes of Protection: multiple
UL 1449 Rating: listed
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Buying Guide for the Best Hardwired Whole House Surge Protectors
When it comes to protecting your home from electrical surges, a hardwired whole-house surge protector is an essential investment. These devices are installed directly into your home's electrical panel and provide a first line of defense against power surges that can damage your appliances, electronics, and other electrical systems. Choosing the right surge protector involves understanding several key specifications that determine its effectiveness and suitability for your home. Here’s a guide to help you navigate through these specifications and make an informed decision.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 it determines how well the device can protect your home from power surges. Lower ratings (around 1000-2000 joules) are suitable for smaller homes or areas with fewer electronics, while higher ratings (3000 joules and above) are better for larger homes with more electronic devices. To pick the right one, consider the number and value of the electronics and appliances you need to protect.
Clamping VoltageClamping voltage is the voltage level at which the surge protector will start to divert excess electricity away from your devices. This is crucial because a lower clamping voltage means better protection for your electronics. Typical clamping voltages range from 330V to 400V. For most homes, a clamping voltage of 330V is ideal as it offers more sensitive protection. If you have particularly sensitive electronics, opt for a lower clamping voltage.
Response TimeResponse time refers to how quickly the surge protector reacts to a surge. Faster response times mean your devices are protected more quickly. This is important because even a slight delay can result in damage to your electronics. Most whole-house surge protectors have response times in the nanosecond range. Look for a surge protector with a response time of less than 1 nanosecond for optimal protection.
Maximum Continuous Operating Voltage (MCOV)MCOV is the maximum voltage that the surge protector can handle continuously without degrading. This is important because it ensures the surge protector can handle the normal voltage levels in your home without being damaged. Typical MCOV values range from 120V to 150V. Choose a surge protector with an MCOV that matches or slightly exceeds your home's standard voltage to ensure it can handle everyday electrical loads.
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). This is important because more modes of protection mean better overall protection for your home. For comprehensive protection, look for a surge protector that offers all three modes (L-N, L-G, N-G).
UL 1449 RatingThe UL 1449 rating is a certification from Underwriters Laboratories that indicates the surge protector has been tested and meets specific safety and performance standards. This is important because it ensures the device is reliable and effective. Look for surge protectors with a UL 1449 rating of at least 3rd edition, as this indicates the device meets the latest safety standards.