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Best 1000-watt Inverter (Modified and Pure Sine Wave inverters) | SolarKnowHow

GoWise 1000W Pure Sine Inverter
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Deciding on the best 1,000-watt inverter is a tough decision with all of the choices, but this article provides the information you need to make the right decision.

This article is based on my experience, forum feedback from RV owners, truck drivers, contractors, campers, industrial users, etc., and of course reviews.

I have provided two quick comparison guides, and additional detail and reviews.

If you want a quick snapshot before choosing the best 1000-watt inverter, check out the stats below from this site.

The top two Pure Sine 1,000W inverters purchased on this site are the Bestek and Renogy inverters.

  • Bestek is popular among tent and car campers.
  • Renogy is purchased more by the RV and off-grid home groups.

Hands down, the most popular Modified Inverter is the 1100 watt inverter by Kreiger.

All of the inverters below are top sellers and have good reviews.

Renogy 1000W 12VDC to 120VAC Pure Sine Wave Inverter
  • Quiet
  • A well-known brand so you can find information
  • Eco-mode and wired remote
  • Hit & miss on customer service
  • Ground fault error complaints in new version
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01/27/2022 06:41 am GMT
BESTEK 1000W Pure Sine Wave Power Inverter DC 12V to 110V
  • Built-in 50A fuses, although hard to find
  • Compact and built well
  • Plenty of output plugs
  • Shipped cables light for load
  • Cooling fans louder than some other inverters
  • Some complaints about inaccurate LCD Display
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01/27/2022 12:15 am GMT
Xantrex Technology Inc, 806-1210 Pure Sine Inverter
  • Quiet
  • Well made unit
  • Convenient digital display
  • Large than some others
  • Need optional starter switch
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01/27/2022 12:17 am GMT
GoWISE Power 1000W Pure Sine Wave Inverter 12V DC to 120V

GoWise is another brand that gets a few dings for service (a theme with almost all of these), but 90% of its reviews are 4 and 5 stars, and the good reviews are excellent. This inverter produces the stated output, if not more, and is recommended across several RV and DIY solar forums.

  • Good value for the price
  • Quiet
  • Staged ramp up to prevent surge
  • Weak customer service reported
  • Power connections too close together
  • Connection cables light for load and surge
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AIMS Power 1000 Watt Pure Sine Inverter

AIMS has many good reviews with a rating of 4.4/5 and 87% of its rating being four out of 5 stars, but what stands out is that it has positive comments about its service and technical support. This inverter should be considered with a two-year warranty (one of the longest in this group), multiple safety checks and features, etc.

  • Quiet
  • Good service
  • Quality built inverter
  • Light on documentation
  • Only one USB port
  • Terminals small for heavier gauge wire
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01/27/2022 12:19 am GMT
KRIËGER 1100 Watt 12V Power Inverter

Kreiger is one of the most well-known Modified inverters in this group. It has a good reputation, and ratings of 4.5/5 support the importance. With plenty of protection, including accessories (remote switch, fuse kit, connection cables), and a 3-year warranty, this is the complete package supported by the most extensive warranty in this group.

  • Good customer service feedback
  • Longest warranty in both groups
  • Wired Remote included
  • Easy to swap terminal posts
  • Remote switch only for standby mode
  • Power cords only 3 feet
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01/27/2022 12:17 am GMT
Ampeak 1000W Power Inverter Truck/RV Inverter 12V DC to 110V AC

Ampeak produces a small, lightweight inverter that is easy to use and performs consistently. Unlike many other inverters reviewed, it does not drain your battery after switching it off, and the digital display is accurate. Ampeak claims a hassle-free warranty

  • Switch kills all power from batteries so no drain
  • Accurate digital display
  • 3-Year Warranty
  • Fuses soldered and cannot be replaced
  • Loud fan, sometimes noisy
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01/27/2022 12:20 am GMT
Energizer 1100 watts power inverter, modified sine wave car inverter, 12v to 110v

Energizer makes a solid inverter with very little negative feedback across reviews or forums. This is a simple, well-built inverter with an accurate display and plenty of output connections. However, the included cables are a little short @ 3 feet, so plan to purchase longer cables if not installing right by your battery.

  • Volt and Amp display
  • Quieter than other Modified inverters
  • 2-Year Warranty
  • Included cables are short
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01/27/2022 12:21 am GMT
PowerBright 1100 Watts Power Inverter 12V to 110V

PowerBright is noted for its technical support, and this is evident in comments across forums and review sites. This is a quiet, dependable inverter that offers consistent performance. The only weakness with this inverter is that you cannot change out the fuses.

  • Good technical support
  • Quiet
  • Good safety checks and accurate display
  • Cannot replace fuses
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01/27/2022 12:22 am GMT
Voltworks Power Inverter 1100 watt DC 12V to AC 120V

Voltworks has about 90 reviews, and forums have positive feedback. Its rating is also 4.3/5 - solid. There are plenty of good features with 2AC outlets and 2 USB Smart ports. The display is also a nice feature. A couple of comments on the unit heating up too much, but overall feedback is positive. It would be good to hear from any users. 

  • Quiet
  • Consistent performance
  • Well-built
  • Included cables are short
  • Heats up at sustained use near 900W
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01/27/2022 12:23 am GMT

Best 1000-watt Inverter – Decision Criteria

Solar Power System Image for 1000 Best Inverters

There are several criteria to consider when choosing an inverter.

  • Pure Sine vs Modified
  • Rating
  • Noise
  • Power Output Outlets/Ports
  • Safety Features
  • Size

Pure Sine vs Modified

In addition to Pure Sine and Modified Inverters, there are also High-Frequency and Low-Frequency Inverters.


A modified inverter is reliable and less expensive than a Pure Sine inverter, and it can run most tools and household appliances.

Sensitive equipment, like what is listed below, may not function properly.

  • Motors will use more power
  • Fluorescent lights may buzz or make other noises and not be as bright
  • Clocks
  • Timers
  • Temperature contollers
  • Computer, cell-phones, tablets

Over a period of time, sensitive machines can be damaged, but because Modified inverters are inexpensive and run most tools, appliances, electronics, etc., they are the most common inverters sold.

Pure Sine

Pure Sine Waves are what your local utility company produces.

These inverters are more expensive but can run any equipment. They are better with sensitive equipment.

High Frequency

Pure Sine Wave

High-Frequency inverters are what you most often find sold. They are less expensive, small, and don’t handle industrial loads as well as low-frequency inverters.

These inverters are good with computers, electronics, small appliances, and small tools but don’t handle machines requiring large loads well – pumps, motors, and some tools with high torque.

Low Frequency

Low-Frequency inverters have an iron core, are more expensive, durable, and usually have more features and versatility.

These inverters can handle much larger loads and some features included are listed below.

  • Hardwire additional external GFCI outlets
  • Input of multiple DC voltages
  • Dual output voltages (120/240VAC)
  • Integrate battery chargers and transfer relays

Note that manufacturers are cutting back on the production of low-frequency inverters with a 1000-watt capacity or less. There are still some low-frequency systems in the market, although many of them double as battery chargers.


how much power do you need

Planning is important when building your solar system, and choosing the correct inverter is critical.

Make sure you know the total amount of wattage you will use. You don’t want an inverter that is too small, nor do you want to waste money on one that is larger than what you need.

The chart above provides standard wattage for many appliances, but the information is also available on the appliances and electronics you are using.

The wattage listed on the back, bottom, or plate is the maximum amount of power used.


When choosing the best 1000-watt inverter a noisy converter behind your truck seat or in your RV and Camp can be annoying.

On the other hand, it does not really matter if the inverter is loud if you are using noisy tools. This is why many contractors choose Modified Inverters. They may be a little noisier, but it does not really matter because of where they use them.

Consumers will let you know if an inverter is noisy, so check out reviews and forums. I have also captured that information in the longer reviews below.

Power Outlets/Ports

Most inverters have both 110AC Outlets and both 2.1 A and 2.4 A (Smart) USB ports.

I don’t care much about USB ports on a Modified Inverter because I’m probably not going to use a Modified inverter for my sensitive electronics.

On the other hand, AC outlets are critical for my tools, and if I’m only using tools then a less expensive Modified inverter is fine.

A Pure Sine inverter must have USB ports when I’m camping or in an RV or cabin. Kids like to play games and watch TV, and I need them for my laptop and phone.

Safety Features

Most modern inverters have safety features, with two critical features being surge protection and temperature control.

When deciding on the best 1000-watt inverter for you high voltage, voltage overload, short-circuit protection, etc., are all safety features to consider.

In addition to LED indicators, alarms, and LCD Displays, modern inverters also have Smart Cooling fans that turn on and off the inverters according to preset temperatures.


One note on size and weight. CHECK THE MANUFACTURERS WEBSITE. Amazon specifications are often wrong, so check the manufacturer’s specifications. I’ve done this in the comparison guides.

Size is dependent on where you put the inverter. Are you squeezing it into a small, tight space in your car or boat? Do you have much more room in your truck or cabin?

When choosing the best 1000-watt inverter, make sure you measure your space requirements before you make the purchase.

All of the inverters I have listed are popular with consumers.

They all have their shortcomings, but they also each have their own strengths and unique characteristics.

If you have used any of these, please don’t hesitate to provide feedback in the comments section below.

Thank you

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