This draw is rated, and the device itself will demand that amount to power on or run. If that supply has a surge or power, the surge protector sends the over-draw to a ground and not to the device where it can cause damage.
When you invest in AC surge protection, you are helping to minimize the chance of damaging your entire cooling system, causing irreversible failures or costly repairs. Even if the system is under warranty, a lot of claims will be denied and filed under misuse or abnormal use conditions, voiding the companies requirement to repair or replace it.
The MSC is the amount of power spikes (measured in Kiloampere, a) a device can handle. The higher the max surge current capacity rating, the more significant power spikes the device can handle.
The SCAR measures the amount of energy the device can withstand and effectively dissipate from a short circuit surge. Metal Oxide Various are small devices inside the power strip or surge protector.
Whole-home protectors are designed to handle several surges per MOVE. Basically, the NEA enclosure is a location rating where the device is capable of being installed.
There are different suitable locations based on voltage ratings, weatherproofing, etc. You will most likely not be installing the whole home surge suppression, as this is the responsibility of the power company.
The Underwriters Laboratories organization lists criteria that electronic equipment must meet. The devices must meet or exceed the minimum standards outlined by UL.
When tested, if they pass, UL will issue a rating sticker that is affixed to each product and on all packaging. Prices can grow based on demand even if the surge protection isn’t as good as a lower-cost system.
Some will have demands you must meet, such as proof of purchase retention, registration, or even professional installation. Let’s take a look at the 7 best AC surge protectors, reviewed, and rated for your convenience.
It meets all NEC and UL 1449 criteria and features all three protection modes. With this device installed, you won’t have to worry about line noise, AC brownouts, or digital board failures.
It also pairs well with the Informatic Compressor Defender for use on your condenser unit or heat pump. When all things are considered, there is nothing better for your residential or light commercial HVAC system.
Type 2 AC surge protectors give you peace of mind on your side of the service line. This device may require professional installation if you don’t know your way around a breaker panel.
The protection it offers is outstanding in the field and backed by Eaton with a limited lifetime warranty. With 22 a SCAR, your AC system is safe against most surges, spikes, sags, and brownouts.
Cons May require professional installation Should not be used on interior breaker panels. Bright panel LED indicators show you that protection is enabled.
The UL 1449 certified panel comes with a limited lifetime warranty. However, you should note that labor to remove the panel and shipping costs are your responsibility, according to the warranty.
Siemens brings you the FS140 (First Surge, 140 a) whole home SPD. Not only will this 4-line SPD protect your entire home, but it also has one of the highest SCAR ratings to help prevent damage from power grid switches and residual lightening.
The FS140 is in a NEA 4 enclosure, so it is suited for mounting outdoors or directly in the external breaker panel. The enclosure is rated for four lines and will show you the connectivity and surge suppression with LED indicators.
With a Type 1 metal enclosure, rated for indoor use, the Informatic Smart Guard is the top of the range when it comes to whole house protection. With a total of 6 protection modes, you can install this device and never worry about your expensive equipment again.
Not only is the installation quite simple, but instead of a complete box SPD, the Smart Guard uses modules, which suppress surges on their lines. The innovative TUMOR (Tamper-Proof Metal Oxide Various) will only open when inserted.
You no longer need to change out an entire box if one surge takes out an module. There is also a power disconnect (2-pole 50 Amp) for quick access and module replacement.
Each module has LED indicators to let you know of protection status or if you need to replace them. You can continue to use Type 3 PDS in the home at the point of use, but with the IG2240-IMSK, you won’t need to worry about anything else for at least 10 years.
Pros modules are easy to replace and tamper-proof Quick-disconnect means no more messing with breakers or circuit lines. The best cheap AC surge protector is the Pipe man’s Installation Solution 220-volt Type 3 SPD.
If you purchase through Amazon and are a Prime member, you can get free returns, but they do not accept replacements for damage. Finally, this is designed only for low wattage systems (Air conditioners, refrigerators) that run on 220 volts.
This breaks the device but prevents the surge from getting to your AC system. It is a small price to pay to protect much more expensive equipment, making Pipe man’s the best 220v surge protector for air conditioners.
Pros Protects low amp devices (15 amps) No installation, just plug it in Quick pop fuse prevents surge in voltage from getting to AC The Welkin 12-outlet power strip adds functionality to your outlet while providing Type 3 surge protection to your devices.
With Line–Ground and Line–Line protection modes, it will withstand a few years’ worth of power spikes. The best power strip surge protector gives you 12 outlets, and a limited lifetime warranty.
Understanding Power Surges & Their Effects on AC Units In the US, our electrical devices (i.e., TVs, computers, refrigerators, and air conditioners) are designed to run on 120 volts, 60 hertz, single phase, alternating current.
It works similar to a heartbeat where the voltage drops to 0 and peaks at about 169 volts. A power surge is an electrical interference that causes the peak to far exceed 169 volts.
When this happens, the extra power, or surge, can cause the device to burn its electrical board or other electronics and stop working. On your AC, the damage can reach the control board, the capacitor, the contactor relay switch, or even the compressor.
Internal surges can also damage the evaporator fan, relays, and thermostat. They are classified and categorized by the National Electrical Code (NEC) and UL 1449 criteria.
These protect against any surge that makes it through the other two options and help regulate the flow of energy through your home wiring to the devices they power. Installation of the AC surge protectors isn’t a complicated process, but you need to take your time doing so.
Make sure you follow the instructions and perform each step without skipping ahead. Always secure your power wires and adequately mount the surge protector in a designated area.
Do I really need multiple types of surge protection installed for my HVAC systems? Multiple types of surge protection is actually a warranted issue in today’s technologically advanced world.
Since most HVAC systems are no longer purely mechanical, they rely on computer parts and digital components to operate correctly. Protecting these components is vital to the longevity of the system and any warranties they carry.
A surge protector, on the other hand, protects the connected devices from power surges in the home. It is possible as long as the ratings of the surge protector exceed the requirements of the window unit.
After it uses the joules, the surge protector turns into a power strip and no longer protects your equipment. There are a few power strip protectors rated for exterior use, but it is never a good idea.
Damp conditions, moisture, and rain will get into the power strip and can cause a lot of damage. A panel box surge protector will protect all the lines feeding into the home.
However, internal surges, appliance overloads, brownouts, and residual lightning power will not be protected against. As you can see, there is a lot to consider before you buy your next surge protection device.