Best Surge Protector for Outside AC Unit in 2025
Updated on August 2025
#1
Recommended
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- Protect HVAC systems and household appliances from power surges with the Intermatic AG3000 Surge Protective Device, featuring three modes of protection: L-G, L-L, and L-N.
- Utilizes advanced Thermally Protected Metal Oxide Varistor (TPMOV) technology for reliable surge protection, significantly reducing hazards associated with traditional MOVs.
- Constructed with a durable, watertight, and UV-resistant plastic enclosure, making it suitable for both indoor and outdoor use while ensuring long-lasting performance.
- Includes a green LED indicator to monitor protection status, providing a quick visual verification that devices are safeguarded against power surges.
- Meets UL safety standards with UL Listing to ANSI/UL 1449 4th Edition, backed by a 3-year product warranty and a $7,500 warranty for connected equipment.
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- Protect HVAC systems and household appliances from power surges with the Intermatic AG3000 Surge Protective Device, featuring three modes of protection: L-G, L-L, and L-N.
- Utilizes advanced Thermally Protected Metal Oxide Varistor (TPMOV) technology for reliable surge protection, significantly reducing hazards associated with traditional MOVs.
- Constructed with a durable, watertight, and UV-resistant plastic enclosure, making it suitable for both indoor and outdoor use while ensuring long-lasting performance.
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#2
Value for Money
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- High-performance surge protector for HVAC systems absorbs up to 20kA of surge, protecting against lightning, power fluctuations, and high-voltage spikes.
- Offers three protection modes (L-G, L-L, L-N) for various wiring configurations, improving surge defense and safety with built-in thermal protection.
- IP65 waterproof rating and flame-retardant materials ensure safe operation during heavy storms and high temperatures.
- Two LED indicators allow for easy monitoring of protection status and identification of issues when protecting multiple lines.
- Compatible with 120/240VAC, suitable for residential and commercial HVAC systems like compressors and motors, with easy installation design.
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- High-performance surge protector for HVAC systems absorbs up to 20kA of surge, protecting against lightning, power fluctuations, and high-voltage spikes.
- Offers three protection modes (L-G, L-L, L-N) for various wiring configurations, improving surge defense and safety with built-in thermal protection.
- IP65 waterproof rating and flame-retardant materials ensure safe operation during heavy storms and high temperatures.
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#3
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- Provides surge protection in three modes: Line to Ground, Line to Line, and Line to Neutral, safeguarding HVAC equipment and electrical devices.
- Incorporates Thermally Protected Metal Oxide Varistor (TPMOV) technology to minimize the risk of failure and enhance safety.
- Constructed in a Type 4X watertight enclosure that is UV-resistant, ensuring durability for indoor and outdoor use in various weather conditions.
- Includes a green LED indicator for easy monitoring of operational status and protection assurance.
- Comes with a 2-year warranty for added peace of mind.
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- Provides surge protection in three modes: Line to Ground, Line to Line, and Line to Neutral, safeguarding HVAC equipment and electrical devices.
- Incorporates Thermally Protected Metal Oxide Varistor (TPMOV) technology to minimize the risk of failure and enhance safety.
- Constructed in a Type 4X watertight enclosure that is UV-resistant, ensuring durability for indoor and outdoor use in various weather conditions.
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#4
12% Off
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- Three-mode surge protection (L-G, L-L, L-N) to prevent damage from power surges, ensuring the safety of HVAC equipment and home appliances.
- TPMOV technology enhances reliability by eliminating failure modes found in standard MOVs, providing effective surge protection.
- Constructed from Type 4X waterproof and UV-resistant plastic, this surge protector is built for durability in both indoor and outdoor settings, guarding devices against environmental elements.
- Equipped with a green LED indicator that shows the operational status of the surge protector, allowing for easy monitoring of equipment protection from power surges.
- Includes an extended warranty period, reflecting a commitment to customer satisfaction and prompt support for any issues encountered.
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- Three-mode surge protection (L-G, L-L, L-N) to prevent damage from power surges, ensuring the safety of HVAC equipment and home appliances.
- TPMOV technology enhances reliability by eliminating failure modes found in standard MOVs, providing effective surge protection.
- Constructed from Type 4X waterproof and UV-resistant plastic, this surge protector is built for durability in both indoor and outdoor settings, guarding devices against environmental elements.
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#5
13% Off
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- HVAC surge protector offers robust defense for heating, ventilation, and air conditioning systems against surges and voltage fluctuations through three protection modes (L-G, L-L, L-N).
- Meets industry safety standards, suitable for various applications while mitigating risks associated with standard MOV technology.
- Designed for straightforward installation without consuming circuit breaker space; features green LEDs for continuous monitoring of surge protection status and timely alerts for replacements.
- Utilizes advanced technology to enhance surge capacity, prolong service life, and improve response to transient overvoltages for better equipment protection.
- Waterproof housing provides durability for both indoor and outdoor installations, ensuring continued protection from environmental elements like thunderstorms and rain.
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- HVAC surge protector offers robust defense for heating, ventilation, and air conditioning systems against surges and voltage fluctuations through three protection modes (L-G, L-L, L-N).
- Meets industry safety standards, suitable for various applications while mitigating risks associated with standard MOV technology.
- Designed for straightforward installation without consuming circuit breaker space; features green LEDs for continuous monitoring of surge protection status and timely alerts for replacements.
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#6
6% Off
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- Easy to install with a weather-resistant enclosure
- Indicator light for LED protection
- Compatible with Type 1 and 2 installations without needing extra overcurrent protection
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- Easy to install with a weather-resistant enclosure
- Indicator light for LED protection
- Compatible with Type 1 and 2 installations without needing extra overcurrent protection
#7
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- Three protection modes (L-G, L-L, L-N) and two installation options for HVAC surge protection: directly on the AC circuit breaker or connected to the home distribution board for extended coverage.
- Simple installation process involving connecting specific wires to the neutral bus bar and circuit breaker, with an LED indicator confirming successful power-on.
- Utilizes advanced thermal protection technology that automatically disconnects during high voltage to minimize fire risk and protect electrical equipment from surges.
- Constructed from 4X waterproof and UV-resistant plastic, ensuring durability and functionality in various weather conditions.
- The LED indicator provides real-time status of the surge protector: green for operational and red for inactive.
- Thoroughly tested for reliable performance, with a 5-year after-sales service available for any inquiries.
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- Three protection modes (L-G, L-L, L-N) and two installation options for HVAC surge protection: directly on the AC circuit breaker or connected to the home distribution board for extended coverage.
- Simple installation process involving connecting specific wires to the neutral bus bar and circuit breaker, with an LED indicator confirming successful power-on.
- Utilizes advanced thermal protection technology that automatically disconnects during high voltage to minimize fire risk and protect electrical equipment from surges.
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#8
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- Surge Protective Devices (SPDs) redirect harmful voltage spikes away from electronics.
- Compact and user-friendly design for simple installation in residential settings.
- Compliance with Article 230.67 of the 2020 NEC mandates SPD installation for all residential dwelling services.
- Updated Article 230.67 of the 2023 NEC extends SPD requirements to include dormitory units and hotel guest accommodations.
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- Surge Protective Devices (SPDs) redirect harmful voltage spikes away from electronics.
- Compact and user-friendly design for simple installation in residential settings.
- Compliance with Article 230.67 of the 2020 NEC mandates SPD installation for all residential dwelling services.
- Updated Article 230.67 of the 2023 NEC extends SPD requirements to include dormitory units and hotel guest accommodations.
#9
17% Off
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- Comprehensive surge protection for HVAC systems with three modes (L-G, L-L, L-N), preventing damage from power surges.
- Certified for quality with rigorous testing and a 5-year warranty, ensuring reliable protection for your equipment.
- Utilizes advanced TPMOV technology to eliminate hazardous failure modes and provide superior surge protection.
- Durable Type 4X enclosure is watertight and UV resistant, suitable for various indoor and outdoor environments.
- Green LED indicator allows for easy monitoring of surge protection status, ensuring equipment is protected.
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- Comprehensive surge protection for HVAC systems with three modes (L-G, L-L, L-N), preventing damage from power surges.
- Certified for quality with rigorous testing and a 5-year warranty, ensuring reliable protection for your equipment.
- Utilizes advanced TPMOV technology to eliminate hazardous failure modes and provide superior surge protection.
- Durable Type 4X enclosure is watertight and UV resistant, suitable for various indoor and outdoor environments.
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#10
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- Surge Arrestor designed for parallel protection
- Multi-purpose use for various applications
- NEMA 4X rated for outdoor and industrial environments
- UL1449 Listed ensuring compliance with safety standards
- Type 1 Surge Protective Device (SPD)
- Compatible with 120/240VAC systems
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- Surge Arrestor designed for parallel protection
- Multi-purpose use for various applications
- NEMA 4X rated for outdoor and industrial environments
- UL1449 Listed ensuring compliance with safety standards
- Type 1 Surge Protective Device (SPD)
- Compatible with 120/240VAC systems
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![[ETL Listed] Cable Matters 2-Pack 1350 Joules Single Outlet Surge Protector for TV, PC, Xbox, PS5, Refrigerator, Treadmill, 15A/1875W, 500V Clamping Voltage Wall Surge Protector Outlet, White](https://m.media-amazon.com/images/I/41UkSh4JF5L._SL320_.jpg)
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