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3 Best 4000 Watt Inverters Review 2021

A great 4000 watt inverter makes all the difference. Electrical power runs the items that run our lives. A durable, efficient power inverter is irreplaceable. Whether they power appliances in an RV, tools on a job site, or keeping things running after a natural disaster, power inverters keep life functioning. You need a power inverter that’s well-made and reliable. A 4000 watt power inverter is an investment. That’s why we’ve reviewed the best three 4000 watt power inverters in 2021.

We’re here to help you choose wisely. Let’s take a look.

Comparison Chart of the 3 Best 4000 Watt Inverters

Kriëger KR4000-12
Kriëger KR4000-12 4000 Watt Power Inverter
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Energizer ENK4000
Energizer ENK4000 4000 Watt Power Inverter
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Giandel PS-4000QAR
Giandel PS-4000QAR 4000 Watt Power Inverter
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Rating
4.5
4.3
4.3
PriceKriëger KR4000-12 priceEnergizer ENK4000 priceGiandel PS-4000QAR price
Output wave formModified Sine WaveModified Sine WavePure Sine Wave
Cooling Fan2 Rear Thermal Fans2 Rear Thermal Fans1 Large Rear Thermal Fan
USB port2 ports—2.1A shared2 ports—4.8A shared1 port—2.4A
AC Outlets224
DisplayLCDLCDLED
Extras Included• 3ft battery cables
• On/Off remote switch w/20ft cable
• ANL Fuse
• 3ft battery cables• 2ft battery cables
• On/Off remote switch w/15ft cable
Protection Features• AC Overload
• Low Voltage Alarm
• Short Circuit
• Low Voltage Shutdown
• Over Voltage Shutdown
• Thermal

• Overload
• Temperature Shutdown
• Short Circuit
• Overload
• Low voltage
• Short circuit
• Over voltage
• Over heat
• Polarity reverse protection
• Auto-restart function, GND protection
Weight9.48 pounds11.5 pounds24.3 pounds
Dimensions15.08 x 5.67 x 4.88 inches15.2 x 7.6 x 5.5 inches18.9 x 7.8 x 6.1 inches

Best 4000 Watt Inverters Review

1. Kriëger KR4000-12 4000 Watt Power Inverter

Kriëger KR4000-12
Kriëger KR4000-12 4000 Watt Power Inverter
4.5
Kriëger is a perfect 4000 watt inverter for both recreation and emergencies. It also comes with wired remote control, which brings convenience to users.

Kriëger’s 4000 watt power inverter works hard for you anywhere you need it—from recreation to work to emergencies. The Kriëger KR 4000-12 features two AC outlets to provide your appliances and tools life. Kriëger also includes a hardwire kit with the KR 4000-12 as well if you need to push all 4000 watts into a single circuit. Capable of outputting 8000 peak watts, the KR 4000-12 can provide the power your circumstances need and then some.

Durability and reliability are two of the most important factors when choosing a power inverter. Failure is not an option. Thankfully, the Kriëger KR 4000-12 passes both tests with flying colors. Kriëger built their inverter with large aluminum heat sinks to keep it cool and prevent damage due to long periods of usage. The fuses and transistors found inside the KR 4000-12 are top-of-the-line, long-lasting components.

Kriëger equipped their 4000 watt inverter with an LCD display that makes it easy to use. The LCD screen displays battery percentage, power amounts, temperature, high/low voltage warning, and an overflow warning. Working with large amounts of power is serious business and Kriëger kept safety in mind when they manufactured the KR4000-12. The safety features make it that much easier to use without worry.

Kriëger KR4000-12 is the best 4000 watt inverter for running most devices and tools you have in your vehicle.
LCD screen displays all info and alerts, which keeps users safe when using Kriëger in their vehicles.

Pros

  • ANL fuse included
  • Control switch with 20ft cable
  • Hard wire kit included
  • Compact, ready-to-mount design
  • Durable electrical components
  • 2 AC outlets and 2 USB ports
  • Lightweight

Cons

  • Modified Sine Wave output can damage some electronics
  • Won’t operate on low input voltage

Verdict

Kriëger 4000 watt power inverter is a great all-around power inverter. It’s perfect for side projects, RV trips, and harnessing solar energy while keeping you prepared for major power outages. It travels well and can handle any job where DC needs converting to AC. It’s a long-lasting, trustworthy power inverter and worth considering.

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2. Energizer ENK4000 4000 Watt Power Inverter

Energizer ENK4000
Energizer ENK4000 4000 Watt Power Inverter
4.3
Energizer 4000 watt inverter not only powers most heavy tools and large machines you have in your vehicles and your home. It also equipped 2 USB ports for charging your electric devices.

Energizer is best known for batteries, but with the ENK4000 they put their expertise to use by manufacturing a high quality 4000 watt power inverter. The Energizer ENK4000 can power a wide range of devices including tools, televisions, game consoles, home appliances, microwaves, and home electronics. With 2 AC outlets and 2 USB ports, it can easily fulfill your power needs.

Energizer’s 4000 watt power inverter has been built with 8000 watt surge capacity to handle the startup of heavy tools and large appliance motors. It’s got enough watts to power anything needed for home or travel from coffee makers to microwaves. Additionally, a hardwire AC outlet on the front provides up to 4000W to a single circuit—the ENK4000 is heavy duty.

Knowledge of input and output amounts on your inverter keeps you and your belongings safe. The Energizer ENK4000 features a LCD display to keep you informed. The display shows battery percentage, output wattage, input voltage, overload warnings, and temperature info. Bad power supply is a recipe for a bad time. Energizer’s got your back and created a 4000 watt power inverter that’s safe and reliable.

Pros

  • Nice compact size for mounting
  • Includes 3 ft 0 gauge battery cables
  • LCD display keeps you informed
  • 2 USB ports to charge phones and handheld electronics
  • Hardwire AC outlet included
  • Rear Input Terminals placed on opposite sides for safety

Cons

  • Remote switch functionality built in but remote not included
  • Modified Sine Wave output can damage some electronics

Verdict

Energizer powers many consumer goods with their batteries and now they power even more with the ENK4000. It’s a great 4000 watt power inverter that stands the test of time and delivers reliable current where you need it. Whatever your use—appliances in an RV, drills on a job site, or pushing solar power into your home—the Energizer ENK4000 will be ready to do its job.

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3. Giandel PS-4000QAR 4000 Watt Power Inverter

Giandel PS-4000QAR
Giandel PS-4000QAR 4000 Watt Power Inverter
4.3
Giandel PS-4000 QAR comes with more advantages of a pure sine wave inverter comparing to the others on our list. It is the best choice if you look for a reliable inverter with all the things you need about safety and convenience.

The PS-4000QAR 4000 watt power inverter from Giandel is ideal for use in RVs, boats, on outdoor job sites, solar projects, and for emergency purposes. Giandel is Australia’s leader in power inverters and outdoor use electronics. The PS-4000QAR features 4 outlets and a single USB port to keep your devices and appliances happy. That’s a lot of outlets on a single inverter! Thankfully, Giandel built their power inverter with 4000 watts regular output and up to 8000 watt peak output to handle heavy power loads without blinking an eye.

The Giandel PS-4000QAR is an excellent power inverter because it’s a Pure Sine Wave inverter. You can’t go wrong with a Pure Sine Wave inverter. Giandel’s inverter produces a smooth, stable electronic signal which is required for many electronics and home medical devices. Other inverters, including others on our list, are Modified Sine Wave inverters which means the power they produce emerges in a more jagged signal which can harm some electronics.

Beyond the comfort of knowing the PS-4000QAR is a Pure Sine inverter, Giandel also included a host of safety features. Power inverters capable of handling 4000 watts need safety features to match this amount of power. Giandel includes protections for low voltage, overloads, short circuits, overheating, reverse polarity, and even lightning strike protection. It’s one tough power inverter.

Pros

  • Pure Sine Wave Inverter which is best for electronics
  • 4 AC outlets included
  • Remote switch included with 15ft cable
  • USB port to charge handheld electronics
  • Comes housed in durable, metal casing
  • Protection features for every power problem

Cons

  • LED screen shows less info compared to competitors
  • Heavy 24 lbs. weight should be considered if mounting

Verdict

With its Pure Sine Wave production and 4 AC outlets, the Giandel PS-4000QAR can handle your power converting needs exceptionally well. If you’re looking to power electronic components and need Pure Sine Waves or more than 2 AC outlets, Giandel’s 4000 watt power inverter should be the one you look to purchase. It should rise to meet any challenge.

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4000 Watt Inverter Buying Guide

Can your devices take a Modified Sine Wave without damage?

When deciding on one of the best 4000 watt inverters on our list, you should know ahead of time what tools or appliances you plan to power. That’s because inverters, 4000 watt or otherwise, come in two forms—modified wave and pure wave. Most household appliances are fine with either, but some electronics will not run properly or ever become damaged on a modified wave inverter.

Is your power supply ready for the load?

Any 4000 watt power inverter you buy can eat up huge amounts of power in a short time because they’re built to do so. Be sure your batteries or other DC power sources are ready for the load you’ll put on them. Most inverters are 90% efficient or higher, but expect to monitor your charge levels, especially if you are using a newer set up. Take care of your power inverter and it will take care of you.

Final Thoughts

Power inverters remain one piece of the chain that keeps our lives moving forward. Without the ability to transfer power from DC to AC, whole areas of our lives become impossible. Make sure you take the time to choose the right one on our list for your power needs. You won’t regret it.

Read more: 3 Best 1000 Watt Inverters Review 2020