Get Yourself One of the Best Pure Sine Wave Inverters So Your Tech Stays Running

Hook your appliances up to a pure sine wave inverter and give them long, happy lives.

byRobert Bacon| UPDATED Dec 21, 2021 9:19 AM
Get Yourself One of the Best Pure Sine Wave Inverters So Your Tech Stays Running
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Whether you’re loading up your RV for a weekend away or starting a van life adventure, pure sine wave inverters help us create our home away from home. If you need to keep something ice cold in a freezer or nuke it in a microwave, a pure sine wave inverter ensures that your devices will work safely. Inverters provide clean, smooth, safe energy to your appliances and reduce the noise associated with running electronics directly from a power source. I’ve created a buying guide so you know what to look out for before picking the right inverter for you. You’ll also find a list of all the best inverters on the market ranked under various categories below.

Best Overall

Renogy 1,000W Pure Sine Wave Inverter

Summary

It’s reliable and has a relatively good power capacity. The only people it won’t be suitable for are those who want to power multiple heavy-duty appliances.

Pros
  • 1,000-watt continuous power capacity
  • 2,000-watt peak power capacity
  • 19.8-foot wired remote control
  • Two 3-foot 4-AWG battery cables
  • ETL-certified
Cons
  • Relatively high price point for 1,000-watt inverter
Best Value

Bestek Power Inverter 1,200W

Summary
When it comes to bang for buck, it doesn’t get much better than this inverter. It’s lighter and, as a result, less sturdy than similarly sized inverters.
Pros
  • Fantastic value for money
  • 1,200-watt continuous power capacity
  • LCD screen
  • ETL-certified
Cons
  • Doesn’t feel as sturdy when compared to competitors
Honorable Mention

GoWise Power PS1004 3,000W Inverter

Summary

Tons of power on tap and plenty of standard American outlets for your devices. Its price point is high, but you get a lot of capacity for the money.

Pros
  • 3,000-watt continuous power capacity
  • 6,000-watt peak power capacity
  • Five protection systems
  • Good build quality
Cons
  • High price point
  • Just one USB port

Our Methodology

Why Trust Us

Our reviews are driven by a combination of hands-on testing, expert input, “wisdom of the crowd” assessments from actual buyers, and our own expertise. We always aim to offer genuine, accurate guides to help you find the best picks.

Learn more

To choose the best pure sine wave inverters on the market, I employed The Drive’s comprehensive research methodology and evaluated dozens of inverters before choosing the top contenders. Although I haven’t personally tested these products, my selection is informed by consumer testimonials, expert reviews, discussions on relevant online forums, and my institutional knowledge of the automotive industry.

I visited the Car Talk and Van Dwellers subreddit to get a more informed opinion of what automotive enthusiasts felt about the products on the market.

Some brands are already well-established in this niche, and priority was given to their products. However, other lesser-known brands were also evaluated. The main features taken into consideration were continuous power wattage, peak power wattage, power sources, power outlets, warranty, price, and reliability. Inverters were immediately disqualified from consideration if they were unreliable or had faults that made them dangerous to use.

Best Pure Sine Wave Inverter Reviews & Recommendations

The Renogy 1,000W Pure Sine Wave Inverter will be enough for most people’s needs and serve them well for years to come. Unless you’re going to power several major electrical appliances, this model’s 1,000-watt continuous output and 2,000-watt peak output should suffice. It has a conversion efficiency of around 90 percent and is loaded with safety features, including under/over-voltage protection, over-temperature protection, overload protection, and short-circuit indicators. It’s ETL-certified, so you can rest assured that your appliances are in safe hands.


There’s a built-in 5V/2.1A USB port, two AC outlets, and an AC terminal block. If you choose this inverter, you’ll also get two 3-foot 4-AWG cables and a 19.8-foot wired remote control. You can get a higher-wattage pure sine wave inverter for less money, but this model’s reliability warrants its slightly high price.

 

Product Specs

  • Brand: Renogy
  • Model: RNG-INVT-1000-12V-P2
  • Wattage rating: 1,000 watts

Pros

  • 1,000-watt continuous power capacity
  • 2,000-watt peak power capacity
  • 19.8-foot wired remote control
  • Two 3-foot 4-AWG battery cables
  • ETL-certified

Cons

  • Relatively high price point for a 1,000-watt inverter
Best Value Pure Sine Wave Inverter
Bestek Power Inverter 1,200W
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In terms of watts for money, it’s hard to beat the Bestek Power Inverter 1,200W as this model has a 1,200-watt continuous output. The manufacturer doesn’t list this product’s peak output but the user’s manual indicates that the overload protection feature is triggered between 1,200 to 1,700-watts. There are two USB quick-charging ports and dual 110V AC outlets, which can be used to power larger devices like laptops, and an LCD screen on the front shows the input/output voltage, and output power.


There’s a smart cooling fan that automatically adjusts its power depending on the inverter’s power load and temperatures, protecting it from overheating. The inverter is ETL-certified and has a range of protection features to keep your devices safe, including under/over-voltage, overload, and short-circuit protection. Included in the sale are four 50A fuses and two battery clamps. You’ll be able to buy with confidence, thanks to the manufacturer’s 18-month warranty.


Product Specs

  • Brand: Bestek
  • Model: ‎MRI12011AU
  • Wattage rating: 1,200 watts

Pros

  • Fantastic value for money
  • 1,200-watt continuous power capacity
  • LCD screen
  • ETL-certified

Cons

  • Doesn’t feel as sturdy when compared to competitors

If money is no object, and you want the best of the best, check out the GoWise Power PS1004 3,000W Inverter. This model is rated for 3,000 watts of continuous power and has a peak power output of 6,000 watts. Since it has such a high continuous power output, you’ll be able to power plenty of appliances simultaneously, and keeping all your devices safe are five protection systems: thermal, overload, over-voltage, under-voltage, and low-voltage protection. It has a soft start function and cooling fans for temperature control.


There are three standard American outlet sockets and one 2.1A USB port. Although this model has more outlet sockets than most other inverters on the market, it’d be nice to see another USB port. Two 3-foot battery cables and a wired remote control are included in the sale. Since this unit costs considerably more than the rest of the products on this list, it’s only worth purchasing if you think you’ll need plenty of power.


Product Specs

  • Brand: ‎GoWISE Power
  • Model: ‎PS1004
  • Wattage rating: 3,000 watts

Pros

  • 3,000-watt continuous power capacity
  • 6,000-watt peak power capacity
  • Five protection systems
  • Good build quality

Cons

  • High price point
  • Just one USB port
Best 3,000-Watt Pure Sine Wave Inverter
Krieger 3,000 Watts Power Inverter
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If out and out power is what you need, but you’re on a bit of a budget, then consider the Krieger 3,000 Watt Power Inverter. This unit has a 3000-watt continuous power output and a peak power output of 6,000 watts. It comes with two 3-foot battery cables and a wired remote control, and there’s also a built-in hardwired kit suitable for applications larger than 15 amps, and keeping everything cool is an ultra-silent fan. You can power your devices via the two 110V power outlets and dual 2.1A USB ports.


For the amount of power on offer, this product is exceptionally good value and you don’t need to worry about reliability, as it’s been tested, validated, and approved by METLAB for both safety and performance and is ETL-certified. Krieger stands by its product too and offers a three-year parts and labor warranty. Whether you’re powering a laptop or a refrigerator, it’ll be protected thanks to this inverter’s smart protection chip. The inverter is protected from overload, under/over-voltage, high temperature, and short-circuiting. This model is best suited for use with an RV or large van as it’s big, weighing 9.1 pounds and measuring 13.75 x 7.62 x 3.37 inches.


Product Specs

  • Brand: Krieger
  • Model: KR3000-12
  • Wattage rating: 3,000 watts

Pros

  • 3,000-watt continuous power capacity
  • 6,000-watt peak power capacity
  • Three-year warranty
  • Two outlets and USB ports

Cons

  • Weighs 9.1 pounds
  • High end of the price spectrum
Best 2,000-Watt Pure Sine Wave Inverter
Renogy 2,000W Pure Sine Wave Inverter
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If you need to power multiple appliances or something with a high surge output, check out the Renogy 2,000W Pure Sine Wave Inverter. This model has a conversion efficiency rate of 90 percent, a 2,000-watt continuous power rating, and a 4,000-watt peak power rating during startup. A range of features keeps your devices safe, including under/over-voltage protection, over-temperature protection, overload protection, and a short-circuit indicator. The inverter has a 5V/2.1A USB port, three AC outlets, and one AC terminal block.


Included in the sale are two three-foot 4-AWG cables and a 19.8-foot wired remote control. Like all Renogy inverters, this model is ETL-certified and comes with a one-year warranty. Two high-speed ventilation fans protect this model from overheating and operate relatively quietly. The only negative aspects worth mentioning are that it’s on the high end of the price spectrum and only has one USB outlet.


Product Specs

  • Brand: Renogy
  • Model: RNG-INVT-2000-12V-P2
  • Wattage rating: 2,000 watts

Pros

  • 2,000-watt continuous power capacity
  • 4,000-watt peak power capacity
  • Three AC outlets
  • ETL-certified

Cons

  • Relatively high price for a 2,000-watt inverter

The Bestek 500W Pure Sine Wave Power Inverter is a good option for people who need a portable way to create clean power. It measures 8.7 x 4.3 x 2.4 inches and weighs just 2.2 pounds, so you could easily carry it in a backpack or keep it in your glove box. This model can maintain a constant power output of 500 watts, although the manufacturer doesn’t state what its peak power output is. Relatively speaking, 500 watts isn’t a lot, but it’s plenty for powering a couple of low-energy-needing devices.


The inverter features two regular American outlet sockets and two 2.4A USB ports, and you can pull power from the car’s battery via the cigarette lighter socket or directly clamp the included alligator battery clamps to the battery terminals. If you choose to draw power through the cigarette lighter socket, then keep the wattage under 150, as this is what most vehicles’ fuses are set up for. Speaking of fuses, two spares are included in the sale. All things considered, this product is great value for money.


Product Specs

  • Brand: Bestek
  • Model: ‎MRZ5011BU
  • Wattage rating: 500 watts

Pros

  • Weighs just 2.2 pounds
  • Two USB ports
  • Compact measurements 
  • 12V cigarette lighter plug

Cons

  • 500-watt continuous power rating

Our Verdict on Pure Sine Wave Inverters

I’ve chosen the Renogy 1,000W Pure Sine Wave Inverter as the best overall pure sine wave inverter. This model has plenty of power without being overkill, and it’s as reliable as they come. If you’re on a tight budget, check out the value option, the Bestek Power Inverter 1,200W.

What to Consider When Buying a Pure Sine Wave Inverter

There are plenty of features to consider before picking the right pure sine wave inverter for you. I’ve put together a buying guide detailing the different types, features, and brands to consider before making your purchase. Keep reading to find out what features matter to you.

Types of Pure Sine Wave Inverters

Pure Sine Waves

Pure sine waves have a smooth and continuous wave-form with a uniform phase angle that allows for constant and clean output voltage, which rises and falls evenly and instantly changes polarity as it crosses the zero-volt line.

Modified Sine Waves

These sine waves are choppy, and their voltage rises and falls abruptly. Phase angles are sharper and less uniform, causing a rougher, less predictable delivery of voltage. Changes between polarity at the zero-voltage line aren’t instantaneous, but take some time to occur, leaving gaps in the delivery of power to your electronics and appliances.

Pure Sine Wave Inverter Key Features

Continuous Power

The most important thing to consider when buying a pure sine wave power inverter is its continuous power output. The continuous power output should be double what your appliances draw. For example, if you want to run a 150-watt TV, then you’ll need an inverter that’s at least 300 watts. If you plan on using multiple devices simultaneously, then you’ll need to add up the total draw and multiply it by two to see how much continuous power you’ll need.

Peak Power

Continuous power relates to long-term normal wattage operation, while peak power relates to the maximum wattage output that an inverter can supply for a very short period. Many power inverters have a peak power rating, also called peak surge power, which is double the figure of their continuous power output. So, for example, a 3,000-watt inverter could have a peak power output of 6,000 watts. An appliance where peak surge power could be an issue is a refrigerator. To continuously run a refrigerator, you need around 800 watts but, once the compressor starts, it requires another 1,200 surge watts. So an inverter running a refrigerator like this would need a peak power output of 2,000 watts.

Power Outlets

Different pure sine wave inverters will have different power outlets. So you’ll need to think about what kind of devices you usually power and what outlets they require. For example, some models will have three standard American outlets but only one USB port, whereas other inverters might have more USB ports but fewer standard outlets.

Safety Features

The whole point of using a pure sine wave inverter is to safely power your devices. These products come with a host of safety features to keep your devices safe. Here are the most important protective features to look out for: thermal, overload, over-voltage, under-voltage, low-voltage, and short-circuit protection.

Power Source

The majority of pure sine wave inverters come with cables that connect directly to your battery terminals. But some, usually smaller, inverters come with a cable that allows you to draw power from your vehicle’s cigarette lighter socket. So, if you plan on using your inverter while you’re in the car and on the move, you should make sure it comes with a cigarette lighter socket connection.

Pure Sine Wave Inverter Brands

Renogy

Renogy started as a small project by students at Louisiana State University and was founded in 2010, although it manufactures its products in China. The brand produces a range of products and specializes in the renewable energy niche. The pure sine wave power inverters this company makes are high-end and reliable but come with the kind of price tag associated with such qualities. Renogy specializes in relatively large inverters, making them best suited for people who need a 1,000- to 3,000-watt model.

Bestek

Bestek was founded in 2007 and is based in Paris, France. The company produces a range of electronic devices but specializes in power inverters. It has one of the widest range of power inverts in the industry, as it produces models ranging from 75-2,000 watts. Inverters from this brand are great for anyone who needs a low-power model, like an inverter you’d use with your cigarette lighter socket. Bestek inverters are great value for money, but the brand never compromises the build quality of its products.

Krieger

Krieger manufactures under its own brand name products and produces private label products for various accounts located in areas such as the USA, UK, France, Portugal, Australia, Israel, and South Africa. This brand’s inverters are high-end, and their high price tags reflect this, but they all come with a five-year warranty, so you can buy with confidence. Krieger only produces inverters ranging from 1,100-4,000 watts, so it’s not the brand for anyone who wants a low-power model.

Tips and Tricks

As with something you do for decades upon decades, you pick up a few tips and tricks along the way in terms of selecting the right product, and/or using it. That’s the case with us and pure sine wave inverters. To help you bridge the information gap, here’s a selection of what we’ve learned along the way.

  • The cigarette lighter socket in your vehicle is probably only set up to deal with 150-watts. So, if you need more wattage than that, you’ll need to draw power directly from the battery.

FAQs on Pure Sine Wave Inverters

You’ve got questions. The Drive has answers!

Q: Do you really need a pure sine wave inverter?

A: If the device or appliance you’re using uses an AC motor then you should probably use a pure sine wave inverter. Examples of devices that need a pure sine wave inverter are refrigerators, compressors, and microwave ovens.

Q: What size pure sine wave inverter do I need?

A: You need a pure sine wave inverter that will cover your appliances’ peak and continuous power needs. Your inverter needs to have a continuous power output that’s double the amount that appliances draw from it. For example, if you use an appliance that continuously draws 200 watts, you’ll need a pure sine wave inverter that has a 400-watt continuous output.

Q: Should I leave my inverter on all the time?

A: Some inverters can be left on at all times, while others should be turned off when they’re not in use. Check what the manufacturer recommends for your particular model. But, even if you can leave your inverter on all the time, it’s good to switch it off from time to time to give its components a rest, especially its fans.