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The best surge protector for ac unit use earns its place on a summer evening when a storm rolls in and the air conditioner is the machine the house cannot lose. A surge protector for the AC unit sits between the power coming in and the compressor outside, and it takes the spike so the equipment does not have to. This guide compares the HVAC surge protectors below by voltage, surge current, enclosure, modes and warranty, and lists more options after the picks.
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Quick picks
Best Overall Wayona HVAC Surge Protector: UL 1449 listed Type 1 SPD with 25kA surge current and a NEMA 4X/IP66 enclosure. Check price on Amazon
Best 3-Mode Protection Urubize AG3000 Protector: 120/240V protection in three modes with TPMOV and a Type 4X watertight enclosure. Check price on Amazon
Best Two-Pack UNIREACH AG3000 2-Pack: Two AG3000 units with TPMOV, LED status and indoor/outdoor housing. Check price on Amazon
Best 5-Year Warranty YUKGAMS AG3000 Protector: Single AG3000 with TPMOV, Type 4X enclosure, LED indicator and 5 year warranty. Check price on Amazon
Best Temperature Range ENRUIEER AG3000 2-Pack: Two AG3000 units with three-mode protection and a NEMA 4X housing rated -40F to 185F. Check price on Amazon
The kits we chose
| # | Product | Solar Score | Buy |
|---|---|---|---|
| 1 | Wayona HVAC Surge Protector | 9.8/10 | Buy on Amazon |
| 2 | Urubize AG3000 Protector | 9.7/10 | Buy on Amazon |
| 3 | UNIREACH AG3000 2-Pack | 9.7/10 | Buy on Amazon |
| 4 | YUKGAMS AG3000 Protector | 9.7/10 | Buy on Amazon |
| 5 | ENRUIEER AG3000 2-Pack | 9.7/10 | Buy on Amazon |
Wayona HVAC Surge Protector
A UL 1449 4th Edition listed Type 1 SPD rated at 25kA surge current with a 200kA SCCR, in a NEMA 4X/IP66 enclosure for 120V/240V systems.
Pros
- UL 1449 4th Edition listed for HVAC equipment
- 25kA surge current with 200kA SCCR
- NEMA 4X/IP66 enclosure for outdoor AC units
- Green LED shows protection status and signals a fault if it turns off
Cons
- 1 YEAR warranty is shorter than the 5 Year terms here
- Pack of 1, so each extra AC unit needs its own protector
- Type 1 SPD suits 120V/240V systems only
- When the LED turns off at end of life, the unit needs replacement
Detailed Review
Wayona's protector states a surge current and short-circuit figure: 25kA Type 1 SPD with a 200kA SCCR, UL 1449 4th Edition listed for air conditioners, condensers, compressors and heat pumps. It works on 120V/240V systems, uses TPMOV technology, and sits in a NEMA 4X/IP66 enclosure built for outdoor AC units and rooftop installs. A green LED confirms active protection and turns off to signal a fault or end of life.
Who it's for: anyone who wants a UL 1449 listed Type 1 SPD with stated figures for an outdoor AC unit. Who should skip it: anyone who wants a 5 Year warranty term or a pack of 2.
Its Solar Score of 9.8/10 comes from performance 33/35, build 22/25, value 21/25, safety 10/10 and warranty 3/5: 89 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Voltage | 120/240V |
|---|---|
| Surge current | 25kA Type 1 SPD |
| Enclosure | NEMA 4X/IP66 |
| Warranty | 1 YEAR |
Taken from the seller's listing on 15 November 2026. Capacity and output figures are rated by the manufacturer.
Safety and Warranty
What this listing states. UL 1449 4th Edition listed, NEMA 4X/IP66 enclosure, 25kA Type 1 SPD, so safety scores 10 of 10. 1 YEAR. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 3 of 5. See How We Pick.
Follow the manual. Connect and use the product as the maker describes, stay within every stated rating, and read the manual before first use.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
Urubize AG3000 Protector
An AG3000 whole-house protector for 120/240V systems with three protection modes, TPMOV technology and a Type 4X watertight enclosure.
Pros
- Three protection modes: L-G, L-L and L-N
- TPMOV technology for surge suppression with fire safety
- Type 4X watertight enclosure for indoor and outdoor use
- Green LED indicator shows protection status at a glance
Cons
- Suits 120/240V systems only
- Pack of 1, so each extra AC unit needs its own protector
- Needs a breaker panel or disconnect box to mount to
- White plastic housing stands out on a dark outdoor unit
Detailed Review
Urubize's AG3000 safeguards an entire home, including HVAC systems, mini splits, air conditioners, furnaces and refrigerators, with 120/240V AC protection in three modes: L-G, L-L and L-N. TPMOV technology suppresses surges with fire safety, the Type 4X watertight enclosure stands up to rain, direct sunlight and extreme temperatures, and a green LED gives instant visual confirmation of protection status. It carries a 5 Year warranty and 6-year support.
Who it's for: anyone who wants three-mode whole-house protection with a Type 4X enclosure for a mini split or AC. Who should skip it: anyone who wants a stated kA surge figure or a pack of 2.
Its Solar Score of 9.7/10 comes from performance 30/35, build 22/25, value 21/25, safety 8/10 and warranty 4/5: 85 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Voltage | 120/240V |
|---|---|
| Modes | L-G, L-L, L-N |
| Enclosure | Type 4X watertight |
| Warranty | 5 Year |
Taken from the seller's listing on 15 November 2026. Capacity and output figures are rated by the manufacturer.
Safety and Warranty
What this listing states. TPMOV technology with Type 4X watertight enclosure, so safety scores 8 of 10. 5 Year. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 4 of 5. See How We Pick.
Follow the manual. Connect and use the product as the maker describes, stay within every stated rating, and read the manual before first use.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
UNIREACH AG3000 2-Pack
A pack of 2 AG3000 protectors for 120/240V systems with TPMOV technology, a green LED status indicator and indoor/outdoor housing.
Pros
- Pack of 2 covers two AC units or a spare
- TPMOV technology suppresses surges with fire safety
- Green LED indicator shows surge protection status
- UV-resistant housing for indoor and outdoor use
Cons
- Pack of 2 means buying 2 even when a single unit needs protection
- Suits 120/240V systems only
- Needs a breaker panel or disconnect box to mount to
- White housing stands out on a dark outdoor unit
Detailed Review
UNIREACH's AG3000 comes as a pack of 2 for 120/240V systems, and it safeguards air conditioners, furnaces, mini split systems, water heaters and refrigerators against overvoltage, spikes and power surges. TPMOV technology suppresses surges, a green LED shows the protection status, and the UV-resistant housing suits indoor and outdoor use. It mounts to breaker panels, disconnect boxes or circuit units, and it carries a 5 Year warranty.
Who it's for: anyone who wants two AG3000 units for two AC units or a spare. Who should skip it: anyone who wants a stated kA surge figure or a single unit.
Its Solar Score of 9.7/10 comes from performance 29/35, build 21/25, value 22/25, safety 8/10 and warranty 4/5: 84 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Voltage | 120/240V |
|---|---|
| Pack | Pack of 2 |
| Technology | TPMOV |
| Warranty | 5 Year |
Taken from the seller's listing on 15 November 2026. Capacity and output figures are rated by the manufacturer.
Safety and Warranty
What this listing states. TPMOV technology with UV-resistant indoor/outdoor housing, so safety scores 8 of 10. 5 Year. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 4 of 5. See How We Pick.
Follow the manual. Connect and use the product as the maker describes, stay within every stated rating, and read the manual before first use.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
YUKGAMS AG3000 Protector
An AG3000 protector for 120/240V mini split and AC systems with three protection modes, TPMOV technology and a Type 4X enclosure.
Pros
- Three protection modes: L-G, L-L and L-N
- TPMOV technology reduces risks of standard MOVs
- Type 4X enclosure for harsh indoor and outdoor use
- Green LED gives instant status updates
Cons
- Suits 120/240V systems only
- Pack of 1, so each extra AC unit needs its own protector
- White housing stands out on a dark outdoor unit
- Framed for mini split and AC systems rather than whole-house protection
Detailed Review
YUKGAMS's AG3000 protects HVAC systems, air conditioners and household appliances in three modes: L-G, L-L and L-N. TPMOV technology reduces the risks of standard MOVs, the Type 4X enclosure is UV-resistant and watertight for harsh indoor and outdoor use, and the built-in green LED gives instant status updates. It carries a 5 year warranty with 6-year support.
Who it's for: anyone who wants a three-mode AG3000 with a Type 4X enclosure for a mini split or AC condenser. Who should skip it: anyone who wants whole-house protection for every appliance or a pack of 2.
Its Solar Score of 9.7/10 comes from performance 29/35, build 21/25, value 20/25, safety 8/10 and warranty 4/5: 82 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Voltage | 120/240V |
|---|---|
| Modes | L-G, L-L, L-N |
| Enclosure | Type 4X |
| Warranty | 5 year |
Taken from the seller's listing on 15 November 2026. Capacity and output figures are rated by the manufacturer.
Safety and Warranty
What this listing states. TPMOV technology with Type 4X enclosure, so safety scores 8 of 10. 5 year. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 4 of 5. See How We Pick.
Follow the manual. Connect and use the product as the maker describes, stay within every stated rating, and read the manual before first use.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
ENRUIEER AG3000 2-Pack
A pack of 2 AG3000 protectors for 120/240V systems with three-mode protection, TPMOV technology and a NEMA 4X watertight housing.
Pros
- Pack of 2 covers two HVAC units or a spare
- Three-mode protection: L-G, L-L and L-N
- NEMA 4X watertight housing stands up from -40F to 185F
- Green LED indicator gives real-time status
Cons
- 1 Year Warranty is shorter than the 5 Year terms here
- Pack of 2 means buying 2 even when a single unit needs protection
- Suits 120/240V systems only
- Fits a standard disconnect box knockout, so it needs a matching knockout to mount to
Detailed Review
ENRUIEER's AG3000 comes as a pack of 2 for 120/240V systems, protecting HVAC systems and appliances through three modes: L-G, L-L and L-N. TPMOV technology gives longer life and higher thermal safety than standard protectors, and the NEMA 4X watertight housing stands up from -40F to 185F for indoor and outdoor installs. A green LED shows real-time status, and it mounts to standard disconnect box knockouts.
Who it's for: anyone who wants two AG3000 units with three-mode protection for two AC units. Who should skip it: anyone who wants a 5 Year warranty term or a single unit.
Its Solar Score of 9.7/10 comes from performance 29/35, build 21/25, value 22/25, safety 8/10 and warranty 3/5: 83 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Voltage | 120/240V |
|---|---|
| Pack | Pack of 2 |
| Modes | L-G, L-L, L-N |
| Warranty | 1 Year Warranty |
Taken from the seller's listing on 15 November 2026. Capacity and output figures are rated by the manufacturer.
Safety and Warranty
What this listing states. TPMOV technology with NEMA 4X watertight enclosure, so safety scores 8 of 10. 1 Year Warranty. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 3 of 5. See How We Pick.
Follow the manual. Connect and use the product as the maker describes, stay within every stated rating, and read the manual before first use.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
As an Amazon Associate I earn from qualifying purchases.
More picks to compare
UNIREACH AG3000 SingleAG3000 with TPMOV, LED status and a 5 Year warranty for an AC unit.Check on Amazon
BSEED Single Outlet ProtectorSingle-outlet protector for air conditioners with a 3-minute delay and a 3-year warranty.Check on Amazon
Wells 25kA Type 1 SPDUL 1449 Type 1 SPD with 25kA surge current and a NEMA 4X/IP66 enclosure.Check on Amazon
KVZKVZ AG3000 ProtectorTPMOV protector with Type 4X housing, LED indicator and a 1 year warranty.Check on Amazon
Numbers side by side
| Surge Protector | Solar Score | Voltage | Surge Current | Enclosure | Warranty | Amazon |
|---|---|---|---|---|---|---|
| Wayona HVAC Surge Protector | 9.8/10 | 120/240V | 25kA | NEMA 4X/IP66 | 1 YEAR | View on Amazon |
| Urubize AG3000 Protector | 9.7/10 | 120/240V | Not stated | Type 4X | 5 Year | View on Amazon |
| UNIREACH AG3000 2-Pack | 9.7/10 | 120/240V | Not stated | Indoor/outdoor | 5 Year | View on Amazon |
| YUKGAMS AG3000 Protector | 9.7/10 | 120/240V | Not stated | Type 4X | 5 year | View on Amazon |
| ENRUIEER AG3000 2-Pack | 9.7/10 | 120/240V | Not stated | NEMA 4X | 1 Year Warranty | View on Amazon |
Figures in this table are the manufacturer’s ratings as listed, captured 15 November 2026.
Where the points went
The Solar Score weighs performance, build, value, safety and warranty. For a surge protector, safety means a stated UL listing, a NEMA 4X or IP66 enclosure and TPMOV technology. All of the picks state a warranty term: three state a 5 Year or 5 year term and two state a 1 year term. How we pick explains the weights.
| Product | Solar Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| Wayona HVAC Surge Protector | 9.8 | 33 | 22 | 21 | 10 | 3 |
| Urubize AG3000 Protector | 9.7 | 30 | 22 | 21 | 8 | 4 |
| UNIREACH AG3000 2-Pack | 9.7 | 29 | 21 | 22 | 8 | 4 |
| YUKGAMS AG3000 Protector | 9.7 | 29 | 21 | 20 | 8 | 4 |
| ENRUIEER AG3000 2-Pack | 9.7 | 29 | 21 | 22 | 8 | 3 |
The Solar Score runs on a 9.2 minimum and a 9.8 maximum, and the weighted point total is placed on that line in proportion, so more points can only raise it.
How to choose the best surge protector for ac unit
Voltage and modes
Every pick here is rated 120/240V, so each matches the 120V/240V systems the listings name. Three of them spell out three protection modes, L-G, L-L and L-N: the Urubize, the YUKGAMS and the ENRUIEER. The Wayona and the UNIREACH state no modes. These units mount at the disconnect box or breaker panel, so a licensed electrician should install them.
| Pick | Modes | Enclosure |
|---|---|---|
| Wayona HVAC Surge Protector | Not stated | NEMA 4X/IP66 |
| Urubize AG3000 Protector | L-G, L-L, L-N | Type 4X |
| UNIREACH AG3000 2-Pack | Not stated | Indoor/outdoor housing |
| YUKGAMS AG3000 Protector | L-G, L-L, L-N | Type 4X |
| ENRUIEER AG3000 2-Pack | L-G, L-L, L-N | NEMA 4X |
Surge current and SCCR
Surge current is the spike a protector handles, stated in kA, and the short-circuit figure is the fault current it withstands, stated as SCCR. Wayona states both: 25kA Type 1 SPD and 200kA SCCR, with a UL 1449 4th Edition listing. The rest state no kA figure, so surge current cannot be compared across them. When a listing states a kA figure, match it to the system it protects; when it states none, the enclosure, modes and warranty are the figures to compare.
Enclosure: NEMA 4X and IP66
An outdoor AC unit needs an enclosure that stands up to rain and sun. Wayona states a NEMA 4X/IP66 enclosure, ENRUIEER states a NEMA 4X watertight housing, and Urubize and YUKGAMS state Type 4X enclosures. UNIREACH states a UV-resistant housing for indoor and outdoor use. NEMA 4X and IP66 are the enclosure codes the listings state; match the code to where the unit will sit. For an RV pedestal rather than a home AC unit, see the best surge protectors for campers.
Warranty and support
Three picks state a 5 Year or 5 year warranty term: the UNIREACH, the Urubize and the YUKGAMS. Wayona states 1 YEAR and ENRUIEER states a 1 Year Warranty. Urubize and YUKGAMS also cite 6-year support, which is customer service rather than a longer warranty term. A longer stated term is worth more when the protector will sit outside for years. How surge protection works is covered in what is power surge protection.
Sizing Notes
- Match the voltage: every pick here is rated 120/240V, so the AC unit and disconnect must match that voltage.
- Match the surge current: Wayona states 25kA with 200kA SCCR; the rest state no kA figure.
- Match the enclosure to the location: Wayona states NEMA 4X/IP66, ENRUIEER states NEMA 4X, and Urubize and YUKGAMS state Type 4X.
- Count the units: UNIREACH and ENRUIEER come as a pack of 2, so a pack covers 2 AC units or a spare.
- Match the warranty: three picks state a 5 Year or 5 year term and two state a 1 year term.
FAQ: power away from the grid
What size surge protector do I need for an AC unit?
Match the voltage to start: every pick here is rated 120/240V. For stated surge capacity, Wayona is the pick with a figure, at 25kA Type 1 SPD with 200kA SCCR.
Do I need a surge protector for a mini split?
A mini split is among the systems these protectors name: UNIREACH, Urubize, ENRUIEER and YUKGAMS all state mini split protection, and Wayona states ductless mini-split systems among its uses.
What does TPMOV mean in a surge protector?
TPMOV stands for Thermally Protected Metal Oxide Varistor. Every pick here uses TPMOV technology to suppress surges, and the listings state it reduces the risks of standard MOVs.
Can a surge protector go outside?
Yes, when the listing states an outdoor enclosure: Wayona states a NEMA 4X/IP66 enclosure, ENRUIEER states a NEMA 4X watertight housing, and Urubize and YUKGAMS state Type 4X enclosures. UNIREACH states a UV-resistant housing for indoor and outdoor use.
How do I know if the surge protector is still working?
Check the green LED: every pick here has a green LED indicator that shows protection status, and Wayona states the LED turns off to signal a fault or end of life.
Related solar guides
See every Power Inverters guide and all Controllers and Inverters guides. Also see the RV surge protector vs power strip. Also see the continuous vs surge watts inverter. Also see the how to lock RV surge protector.
More picks: the best surge protector for travel trailer, the best RV surge protector with auto-shut-off and the is a surge protector necessary guide.
