5 Best 12000 Watt Generators To Power Up

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Discover the best 12000 watt generators so you can reliably power a lot without all the issues of low-quality models.

Best 12000 watt generators top picks

  1. Westinghouse wGen9500 – Best 12000 watt generator (non-inverter)
  2. Westinghouse wGen9500DF – Best 12000 watt dual fuel generator (non-inverter)
  3. Westinghouse wGen9500TFC – Best 12000 watt tri fuel generator (non-inverter)
  4. Winco HPS12000HE – Low THD 12000 watt generator (<6% THD)
  5. Pulsar G12KBN (non-inverter, duel fuel)

Depending on your preferences and needs, 12000 watt generators lower on the list can be the right choice too.

How we selected our top picks

After gathering the portable generators with 12000 peak watts, I looked at the following details to select the top picks:

  • Run time, fuel types, outlets, fuel efficiency, noise levels, etc.
  • User reviews
  • Anecdotal reviews from experts
  • Price
  • Brand trustability and reputation
  • The performance categories below

If a pick seems interesting click it to see the online prices.

Brand ModelPower
Capacity
Run
Time
Quiet
Operation
THDReliability
Reputation
Fuel
Efficiency
Ease
Of Use
PortabilityPrice
Category
Current
Price
Westinghouse wGen95009.56.56<23%9.57.58.55$$Check Price
Westinghouse wGen9500DF9.56.56<23%9.57.58.55$$Check Price
Westinghouse wGen9500TFC9.56.56<23%9.57.58.55$$Check Price
Winco HPS12000HE9.595<6%8?84$$$$$$Check Price
Pulsar G12KBN98.56High
THD
99.585$Check Price
Best 12000 watt generators performance on a score of 10 in important categories*

*Compared to similar generators and sometimes based on customer input

5 Best 12000 watt generators detailed reviews

People who know more or less what they want could be able to choose the best 12000 watt generator for their situation with the list of top picks and the performance table.

That being said, you will likely find it easier to make a decision after checking out some of the detailed reviews below.

1. Westinghouse wGen9500 – Best 12000 watt generator

Our top pick for the best 12000 watt generator is the Westinghouse wGen9500 thanks to its good features, reliability, and reasonable price.

The first thing you do want to keep in mind is that the Westinghouse wGen9500 produces high THD power.

Westinghouse wGen9500

In simpler words, this portable 12000 watt generator is not suited for running sensitive electronics.

Unless you have your own inverter or another way to “clean up” the electricity.

Additionally, it is worth noting there are still a few very exceptional cases of technical issues.

Even though the Westinghouse wGen9500 is one of the more reliable options on this list.

Pros

  • Westinghouse WGen9500 offers 12500 starting watts, 9500 running watts, 50 amps, and 240 volts
  • Run time of 12 hours at 25% load
  • Weight of 208 lb (94.4 kg)
  • Has electric and remote start
  • Four GFCI outlets
  • Version with CO sensor available too
  • Relatively positive customer reviews
  • 3 years limited residential and 1 year limited commercial warranties
  • A lot of customers
  • Relatively budget-friendly

Cons

  • THD of less than 23% is not suited for sensitive electronics
  • A few very exceptional cases of initial shipping and technical issues
  • Noise levels of 74 dBA are loud

That being said, the Westinghouse wGen9500 is still our top pick for good reasons.

First of all, the electric and remote start make it easier to get the Westinghouse wGen9500 going and stop it when done.

You could even do these things from the comfort of your own home or RV.

The run time of 12 hours at 25% load is not the most impressive on this list but should be enough for a convenient experience.

In combination with the relatively budget-friendly price, the Westinghouse wGen9500 is definitely worth considering if you only want gasoline as a fuel option.

Brand ModelPower
Capacity
Run
Time
Quiet
Operation
THDReliability
Reputation
Fuel
Efficiency
Ease
Of Use
PortabilityPrice
Category
Current
Price
Westinghouse wGen95009.56.56<23%9.57.58.55$$Check Price
Westinghouse wGen9500 performance on a score of 10 compared to similar alternatives

2. Westinghouse wGen9500DF – Best 12000 watt dual fuel generator

It may sound straightforward that the Westinghouse wGen9500DF which is the dual fuel version of the top pick is also the best 12000 watt dual fuel generator.

However, this option was more contested with solid alternatives like the Pulsar G12KBN and WEN DF1200X on the market.

Westinghouse wGen9500DF

Ultimately I did decide on the Westinghouse wGen9500DF due to its seemingly higher reliability and longer warranties.

At the same time, any good temporary deals on the alternatives could make them the better option overall.

Pros

  • Westinghouse WGen9500DF offers 12500 starting watts, 9500 running watts, 50 amps, and 240 volts (gasoline)
  • Dual fuel feature allows you to run on propane (LPG) too
  • Run time of 12 hours at 25% load
  • Weight of 211 lb (95.7 kg)
  • Has electric and remote start
  • Four GFCI outlets
  • Version with CO sensor available too
  • Relatively positive customer reviews
  • 3 years limited residential and 1 year limited commercial warranties
  • A lot of customers

Cons

  • THD of less than 23% is not suited for sensitive electronics
  • A few exceptional cases of initial shipping and technical issues
  • Noise levels of 74 dBA are loud

Alternatives aside, a dual fuel generator like the Westinghouse wGen9500DF can be helpful because propane typically stores longer than gasoline.

In turn, staying prepared for power outages and off-grid living become more convenient to do.

Additionally, if you only plan to use your 12000 watt generator every once in a while, propane tends to involve less maintenance.

When it comes to specific benefits besides the dual fuel feature, the Westinghouse wGen9500DF is very similar to the previous option.

That means you get a reliable and quality 12000 watt non-inverter generator for a reasonable investment.

Brand ModelPower
Capacity
Run
Time
Quiet
Operation
THDReliability
Reputation
Fuel
Efficiency
Ease
Of Use
PortabilityPrice
Category
Current
Price
Westinghouse wGen9500DF9.59.56<23%9.57.58.55$$Check Price
Westinghouse wGen9500DF performance on a score of 10 compared to similar alternatives

3. Westinghouse wGen9500TFC – Best 12000 watt tri fuel generator

There are not many 12000 watt tri fuel generators but even if there were, they would have a hard time doing a better job than the Westinghouse wGen9500TFC.

Tri fuel generators allow you to run on natural gas on top of the more standard gasoline and propane.

Westinghouse wGen9500TFC

Being able to get power from natural gas could be a valuable benefit depending on your location and what you want to use your 12000 watt generator for.

By now, you do know the downsides like the high THD and noise levels of the Westinghouse wGen9500TFC.

Pros

  • Westinghouse WGen9500TFC offers 12500 starting watts, 9500 running watts, 50 amps, and 240 volts (gasoline)
  • Tri fuel feature allows you to run on natural gas and propane (LPG) too
  • Run time of 12 hours at 25% load
  • Weight of 215 lb (97.5 kg)
  • Has electric and remote start
  • Four GFCI outlets
  • Version with CO sensor available too
  • Relatively positive customer reviews
  • 3 years limited residential and 1 year limited commercial warranties
  • A lot of customers

Cons

  • THD of less than 23% is not suited for sensitive electronics
  • A few very exceptional cases of shipping issues
  • Noise levels of 74 dBA are loud

One difference besides the tri fuel option is that the Westinghouse wGen9500TFC has fewer negative reviews for now.

That being said, this is likely more because the other versions just have more reviews instead of reliability differences.

And even if something would go suboptimal with the Westinghouse wGen9500TFC, you can make use of the three years limited residential or one year commercial warranties.

Another difference is that the Westinghouse wGen9500TFC is just a bit pricier.

However, since this is only to a small extent, this portable 12000 watt generator is likely still the right choice if you want to run on natural gas.

Brand ModelPower
Capacity
Run
Time
Quiet
Operation
THDReliability
Reputation
Fuel
Efficiency
Ease
Of Use
PortabilityPrice
Category
Current
Price
Westinghouse wGen9500TFC9.56.56<23%9.57.58.55$$Check Price
Westinghouse wGen9500TFC performance on a score of 10 compared to similar alternatives

4. Winco HPS12000HE – Low THD

The Winco HPS12000HE deserves a spot on the list of the best 12000 watt generators because it is the only low THD option (to my knowledge).

That being said, you likely don’t want to invest in this model for two main reasons.

Before going into these, it is worth mentioning that if you go one power level higher to 13000 peak watts, there are a few low THD options.

That aside, the Winco HPS12000HE is a very expensive 12000 watt generator with a relatively low number of customer reviews to get an idea of its quality.

Pros

  • Winco HPS12000HE offers 12000 starting watts, 10800 running watts, 60 amps, and 240 volts
  • Tri fuel feature allows you to run on natural gas and propane (LPG) too
  • Good run time of 9.1 hours at full load
  • Less than 6% THD
  • Has electric start
  • Four GFCI outlets
  • Weight of 272 lb (123.4 kg)
  • Relatively positive customer reviews
  • 24 months parts warranty (consumer and commercial)

Cons

  • Expensive for a 12000 watt generator
  • Noise levels of 78 dBA are loud
  • Not that many customers yet

The things above still apply but you may want to know about the benefits of the Winco HPS12000HE too.

As mentioned, this is the (to my knowledge) only low THD 12000 watt generator. Less than 6% THD is generally low enough to run sensitive electronics.

Another positive point is the 9.1 hours run time at full load. How much this is at lower loads is hard to predict (this is not just /4 or /2).

However, since it is already longer than other options at 50% load, the Winco HPS12000HE does well in this area.

Even considering these benefits, you likely still want to turn to different power levels for a low THD portable generator with a better price-value ratio.

Brand ModelPower
Capacity
Run
Time
Quiet
Operation
THDReliability
Reputation
Fuel
Efficiency
Ease
Of Use
PortabilityPrice
Category
Current
Price
Winco HPS12000HE9.595<6%8?84$$$$$$Check Price
Winco HPS12000HE performance on a score of 10 compared to similar alternatives

5. Pulsar G12KBN

As mentioned, the Pulsar G12KBN barely misses the top spot for the best 12000 watt dual fuel generator due to its short warranty and seemingly worse reliability.

From the customer reviews, it looks like the Pulsar G12KBN involves a slightly higher risk of technical issues.

Pulsar G12KBN

At the same time, this model is definitely still worth considering if you want a big portable generator that can run on propane.

Especially if you stumble upon any good deals (or the Westinghouse wGen9500DF is the full price), the Pulsar G12KBN could actually be the smarter choice.

Pros

  • Pulsar G12KBN-SG offers 12000 starting watts, 9500 running watts, 50 amps, and 240 volts (gasoline)
  • Dual fuel feature so you can run on propane (LPG) too
  • Good run time of 12 hours at 50% load
  • Good gasoline fuel efficiency
  • Weight of 209 lb (94.8 kg)
  • Has electric start
  • Relatively positive customer reviews
  • A lot of customers
  • Relatively budget-friendly

Cons

  • A few exceptional technical issues
  • 1 year limited warranty is short
  • Noise levels of 74 dB are loud

Besides in price, the Pulsar G12KBN is impressive in terms of its 12 hours of gasoline run time at 50% load too.

This allows you to enjoy its 9500 running watts for longer before having to refuel the tank.

With 74 dB (typically measure at 25% and 23 feet away), the Pulsar G12KBN is one of the many quietest 12000 watt generators.

At the same time, this is likely still too loud for a busy RV camping or a small neighborhood. Certainly at night.

In short, whether you will prefer the Pulsar G12KBN or the Westinghouse wGen9500DF will depend a lot on current deals, how much reliability you need, your budget, and how often you plan to use your 12000 watt generator.

Brand ModelPower
Capacity
Run
Time
Quiet
Operation
THDReliability
Reputation
Fuel
Efficiency
Ease
Of Use
PortabilityPrice
Category
Current
Price
Pulsar G12KBN98.56High
THD
99.585$Check Price
Pulsar G12KBN performance on a score of 10 compared to similar alternatives

FAQ

Are there 12000 watt inverter generators?

According to my research, there are no 12000 peak watt inverter generators.

However, there is a model with THD levels that are low enough for sensitive electronics.

Can a 12000 watt generator run a house?

If you follow the safety guidelines, a 12000 watt generator can run at least some reasonably-sized houses.

In practice, the size of your house and what devices you plan to run inside decide whether a 12000 watt generator would be big enough.

What is the best 12000 watt generator on the market?

The Westinghouse wGen9500 is our top pick for the best 12000 watt generator on the market thanks to its combination of solid features, reliability, and reasonable price.

If you want to be able to generate power from propane too, the Westinghouse wGen9500DF could be an even better choice.

Similarly, the Westinghouse wGen9500TFC could be a good option if you want to be able to use natural gas too.

Westinghouse wGen9500
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Author:

Mats is the founder and head editor of Generator Decision. With a combination of critical thinking, tireless research, and a healthy interest in electronics he helps people find the right generators and how to use these. At this point in the journey, Mats has done research on hundreds of portable generators.