It’s taken less than 10-years for Westinghouse to establish themselves as a leader in the portable generator market. The Westinghouse WPro12000 is the Flagship model in their extensive lineup of good quality, affordable portable generators. In this review, we’re going scrutinize this powerful jobsite generator in detail. The Westinghouse WPro12000 could well be the best value heavy-duty industrial generator in 2020.

The name Westinghouse has been associated with electrical engineering of the highest order for well over a century. Portable generators, for the consumer market, are a more recent addition to their range of electric products. Westinghouse started manufacturing portable generators in 2011. It took some time for the brand to earn recognition as a top generator manufacturer for home, camping, and contractors. I, for one, have become one of their most loyal fans. If you’d like to know more about the Westinghouse Brand and their extensive array of portable generators, this article may warrant a read: Westinghouse ǀ Best Value Portable Generators

About the Westinghouse Pro Generator Series

Westinghouse manufacture a wide range of portable generators of every description. The Westinghouse Pro generator models are a relatively new addition to their power products lineup. These generators are aimed at the contractor, seeking a tough and reliable jobsite generator that meets regulated safety requirements. If we compare the Westinghouse WPro12000 to the standard WGen12000, the most notable difference is the inclusion of OSHA compliant GFCI outlets on the WPro12000.

Apart from the ultra-powerful Westinghouse WPro12000, there are several other Pro models:

  • iPro2500 is a quiet inverter jobsite generator, providing 2200W rated power and 2500W peak power.
  • iPro4200 is a very affordable open frame inverter generator, designed for jobsite applications. 3300 rated watts and 4200 peak watts.
  • WPro8500 is basically the same as the WPro12000 that we’re reviewing here, with a smaller engine and lower power output. The Wpro8500 is obviously cheaper than the larger WPro1200. It is a rugged open frame jobsite generator with 8500W rated power and 11500W surge power.

How does the Westinghouse WPro1200 rate as an industrial-grade generator?

It’s not always easy to believe advertising blurbs. I’ve seen many generators marketed as ultra-heavy-duty, industrial-grade, super-machines. When, in fact, they are far from it. When I review a genuine industrial-grade jobsite generator, there’s one that will always stand out as the yardstick by which all others should be measured; the legendary CAT RPE12000E.

In many ways, the Westinghouse WPro12000 and CAT RPE12000E are remarkably similar. Both these generators produce 15,000 peak watts and 12,000 running watts. They both use very similar V-Twin engines and both generators have remarkably robust and exacting alternators. These are also both OSHA compliant jobsite generators and are marketed as heavy-duty industrial grade machines.

Essentially, they seem to be almost the same. Okay, there is a difference in the brands. Caterpillar is a name that has been associated with heavy-duty construction equipment and industrial generators for decades. Westinghouse has only been manufacturing portable generators for less than a decade, and this has mostly been focused at the domestic and camping generator market. Can Westinghouse really stand up to the masters of industrial machinery?

Some may call me pedantic for pointing this out; but look at the wheels on the Westinghouse WPro12000. The CAT 12KW industrial generator has serious metal rims, whereas the Westinghouse generator has plastic wheels. Okay, these look like pretty tough wheels compared to most other cheap plastic equivalents. None the less, I prefer to see solid, industrial grade metal when I’m buying a jobsite generator for heavy-duty work. Plastic wheels on an industrial generator can compare to the guy arriving at a jobsite wearing sneakers when everyone else is wearing safety boots. It’s just not right.

To be fair though, this is the only real quibble I can remark on concerning the Westinghouse WPro12000. It is quite a magnificent jobsite generator. Then we’ve got to consider the price. The Westinghouse WPro12000 is about $1,000 cheaper than the CAT. For a saving of a grand, I’d happily accept less than the best wheels. Granted, we are yet to see if Westinghouse generators can hold up to the big names. It will take a few years for the Westinghouse generators to prove themselves as worthy rivals in this competitive market. If I were a betting man, my money would be on Westinghouse. I’d also bet that we’re going to see higher price tags on Westinghouse generators in the coming years. Though this can only be speculative, time will tell.

For a rational review, I think we should compare the Westinghouse WPro12000 to something that’s more in the same price range. The DuroMax XP15000E is marketed as a heavy-duty 15,000W/12,000W portable generator, and is priced similarly to the WPro12000. On the face of things, these appear to be similar generators. The DuroMax generator also has plastic wheels. So, even in relation to my generator wheel kit fetish, these two generators make for an even comparison.

This can be seen as a comparative review: Westinghouse WPro12000 vs DuroMax XP15000E. I’ll be reviewing both these generators in detail, leaving you to decide which is the best jobsite generator. As always, I will be offering my opinion, which  I see as an informed one. Though this is simply one guy’s point of view, others may differ. Before the individual reviews, here’s a basic overview of the two generators.

Westinghouse WPro12000 vs DuroMax XP15000E

Westinghouse vs DuroMax
Westinghouse WPro12000 DuroMax XP15000E

Running Power

Peak Power


GFCI Outlets


Fuel Tank Capacity


Remote Control


Lifting Eye


12,000W (50/100A)

15,000W (62/124A)


Full panel protection

16 HRS @ 25%; 11HRS @ 50% load

10.5 Gal.

713cc OHV V-Twin


352 LBS


3-years Residential; 1-Year Commercial

Check Price

12,000W (50/100A)

15,000W (62/124A)


120V 20A outlets only

8.8HRS @ 50% load

10.8 Gal.

713cc OHV V-Twin


349 LBS


3-years Limited

Check Price

 A quick comparison of the Westinghouse WPro12000 vs DuroMax XP15000E reveals many similarities and a few differences. The Westinghouse generator has a wireless remote control, which is nice to have, but certainly not a deal breaker. A glaring discrepancy appears when we look at fuel consumption. Ironically, both generators have seemingly identical 713cc V-Twin engines. Though fuel consumption is much better for the Westinghouse generator, indicating that these engines are not identical. Despite having a slightly larger gas tank, the DuroMax generator only achieves 8.8-hours runtime on a tank at 50% load. At the same power output, the Westinghouse WPro12000 will run for 11-hours. Suggesting approximately 25% improved fuel economy for the Westinghouse generator.

Based on fuel savings alone, I’m already leaning toward the Westinghouse WPro12000 as the best value heavy-duty generator. Is this all there is to the story? The generator reviews will reveal all, there are a few subtle differences that may influence the final outcome.

Westinghouse WPro12000 – the Complete Review

Westinghouse WPro12000


  • 15,000 starting watts; 12,000 running watts
  • Electric and recoil starter with remote control fob included
  • Up to 16-hours runtime – 10.5 gallon gas tank.
  • Full Panel GFCI:
    • 2 X 120V 5-20R 20A Duplex outlets
    • 1 X 120V L5-30R 30A outlet
    • 1 X 120V L14-30R 30A outlet
    • 1 X 120V/240V L14-50R 50A outlet
    • 2 X USB outlets
  • Ultra-heavy-duty 713cc V-Twin engine with cast iron sleeve
  • VFT Digital Data Center
  • 3-Year warranty
Link to Amazon


When I say the Westinghouse WPro12000 is the best value industrial grade generator, it is not without reason. Yes, I have a great affinity for the brand, and this may affect my judgement to some degree. Though no one can deny that this is quite an accomplished machine. For a generator of this caliber, the price is incredibly reasonable. With 15,000 watt surge capacity and 12,000W continuous power, the Westinghouse WPro12000 can  supply most jobsites without any worries of the generator tripping from an overload. It is also a wonderful generator for home backup, able to supply most of our household power requirements. The inclusion of 30A and 50A outlets make this a transfer switch ready generator. Another plus for home or business emergency generator applications.

The Westinghouse 713cc V-Twin OHC engine is a remarkable powerhouse. With a cast iron sleeve and forged components, this is one of the most durable generator engines around. I don’t often say this, but I think this engine can match anything produced by Honda, which is my personal favorite compact engine manufacturer. Super-efficient, this engine is also CARB and EPA certified. The real wonder of this formidable workhorse is the hugely impressive fuel economy it offers. The 10.5-gallon metal gas tank is a wonderfully convenient size for a powerful engine like this one. At 25% rated load, you can expect up to 16-hours runtime. When running at an average 50% of the rated load (6,000W), the Westinghouse WPro12000 will effortlessly breeze along for around 11-hours. I’d guess on most jobsites, you’ll work for an entire day without stopping to refuel the generator. That’s productivity for you. If you do want to stop or start the generator, it’s as easy as pie. A remote control fob is supplied with the WPro12000, enabling you to start the generator from as far as 109-yards. To make remote starting possible, the WPro12000 has an automatic choke.

The mechanical brilliance contained in this magnificent machine extends beyond the great engine. The alternator is also a remarkable piece of engineering, ranking alongside the very best in the world. With 5% THD, the Westinghouse WPro12000 may not be as impressive as an inverter generator but it is fantastic for a conventional generator. Inverters are used to lower the Total Harmonic Distortion (THD) produced by portable generators. This is done to protect electronic equipment from damage and improve the efficiency of most electrical appliances. The average portable generator (without an inverter) will read THD levels exceeding 25% at high loads. Now, when we look at the <5% THD spec for the Westinghouse WPro12000, it becomes clear that this is no ordinary generator. This level of THD is deemed safe for sensitive electronics, a feat few standard generators can attest to. Typically, it’s only the really expensive generator manufacturers who produce alternators with this kind of THD. To achieve this level of excellence, the Westinghouse WPro12000 probably uses a multi-pole alternator with heavy-duty copper windings. Placing it more in the same league as the top brands, like CAT and Honda. Comparing the Westinghouse to generators in the same price range, it is simply exceptional.

The Westinghouse WPro12000 has one of the most comprehensive control panels fitted to a portable generator.

The one-touch starter is a breeze. Along with an automatic choke, this an exceptionally easy generator to start. Next to the starter functions, is a port for charging the onboard battery. A 12V battery charger is supplied as part of the kit when buy the WPro12000. This means, when storing the generator, it’s a really simple procedure keeping the battery charged. Just plug the charger into a 120V socket and charge the battery. Next in line, are the 2 X 5V USB ports and the VFT digital display (Volts, Frequency, lifetime running hours). A mechanical float fuel gauge is fitted to the gas tank. At the top of the front panel, is an easy-access 2-pole full panel GFCI breaker, providing ground fault circuit interruption for all AC receptacles. This also serves as a main overload breaker.

There are 2 X 120V 20A circuits (with individual breakers), these supply the two 120V 20A 5-20R duplex outlets. A 120V 30A breaker protects the 30A L5-30R 120V outlet. A 120/240V 30A L14-R outlet is also provided and this circuit has its own breaker. The 120/240V L14-50R 50A circuit is protected by the main overload and GFCI breaker. Wonderfully logical and perfectly safe. The engine is also protected with a low oil shutdown. I’m quite impressed with the durable plastic covers protecting all the outlets. This is often an undervalued item. On a jobsite, where dust and bad weather can easily damage electric equipment, the added protection of theses covers go some way in providing extra long term durability. It’s all in the details.

It should go without saying that the Westinghouse WPro12000 is a pretty heavy beast. How can it not be? A massive, and ultra-durable 713cc engine; industrial-grade frame; metal gas tank and control panel are going to add up to quite a few pounds. The WPro12000 is certainly in the heavyweight league, at 352-pounds. Although lifting this generator is not easily done, there’s a comforting sense of quality when a tough generator weighs this much. They’ve certainly put the heavy into heavy-duty with this one. A large wheel kit is supplied with the generator. I’ve already expressed my apprehension toward these plastic wheels, but they are quite acceptable, none the less. Two fold down handles also aid portability. These handles clip to the tubing frame when not in use, another cool detail. A strong bar across the top of the WPro12000 makes it easy to attach a lifting hook.

However you look at it, the Westinghouse WPro12000 is superb value for money. Paying in the region of $2,500 may not be everyone’s idea of cheap, but you have to consider what you’re getting for your money. Compare the WPro12000 to any industrial-grade 15KW generator and you’ll see what I’m talking about. This generator can rank amongst the ultimate heavy-duty jobsite generators, without the same enormous price. For emergency power at home, anyone will appreciate the tough build quality of this generator. Incredible fuel economy simply adds to the common sense good value that the Westinghouse WPro12000 has to offer. Westinghouse provide a 3-Year residential (1-year commercial) warranty on this generator, along with an extensive network of Westinghouse service centers across the US.

Westinghouse WPro12000 Downloads: 

Westinghouse WPro12000 User Manual [PDF]

Westinghouse WPro12000 Quick Start Guide [PDF]

 Westinghouse WPro12000 Spec Sheet [PDF]

DuroMax XP15000E

DuroMax XP15000E Portable Generator


  • 15,000W starting power, 12,000 running watts
  • Powerful 713cc, 23HP V-Twin engine
  • CARB and EPA certified
  • 83 hours runtime at 50% load (10.8 gallon gas tank)
  • Noise level as low as 74dB
  • 4 X 120V 20A (GFCI) outlets; 1 X 120V 30A outlet; 1 X 240V 30A outlet; 1 X 240V 50A outlet
  • Electric key start
Link to Amazon


I think it’s already clear that the Westinghouse WPro12000 is my personal top choice of the two generators being reviewed here. That’s not to say that the DuroMax XP15000E is not a good generator, its mass popular appeal for many years, speaks volumes. On Amazon, the DuroMax 15KW generator received a 4.2 star rating in the value for money category. It most certainly is a top contender amongst the most affordable heavy-duty generators. Can this generator hold its own when ranked alongside the Westinghouse WPro12000? This will be debatable, and I’ll leave you to draw your own conclusions on the matter.

First impressions suggest that there is very little difference between the DuroMax XP15000E and the Westinghouse WPro12000. These are both large, immensely powerful generators, contained in a solid durable frame. They have similar wheel kits and handles. Both generators are fitted with a seemingly similar V-Twin 713cc engine with CARB and EPA certification. These are both 120/240V generators with a peak output of 15000W and a running capacity of 12000W. It’s only when we take a look at the finer details that some differences emerge.

In the summarized comparison, I touched on the topic of fuel consumption. When comparing the best budget generators,  I feel that fuel economy plays an important role. If you can save a bit when buying the generator, great. But it’s the gas bill that’s going to be with you for the lifetime of the generator, making this a significant factor.

I find the best way to make an accurate fuel economy comparison between generators is to convert the runtime into kilowatt-hours per gallon of gas (KPH/G). This gives us an apples to apples type comparison. Think of it like Miles per gallon, where comparing car specs.

At 50% rated load, the DuroMax generator will run for a specified 8.83 hours from a 10.8 gallon gas tank. Gas consumption, therefore, works out at 4.9 KWH/G. This is actually quite dismal. I rate anything above 5KWH/G as acceptable fuel economy, even if it’s not that great. If we do the same calculation for the Westinghouse WPro12000, things look quite different.

The WPro12000 provides 6.3 KWH/G, definitely well above average, it’s one of the best. This means you’re getting around 23% more kilowatts (power) per hour from a gallon of gas using the WPro12000. Simply put, if you’re spending $100 on gas using the Westinghouse generator, you’ll be spending ±$120 – $125 if you were using the DuroMax generator to do the same job. Over the years, that’s going to amount to quite a few dollars. Fuel economy would be my number one argument in favor of the Westinghouse WPro12000.

The DuroMax XP15000E utilizes a heavy-duty alternator with solid copper windings. This appears to be a reliable, well-made unit. However, I don’t believe it can compare to the low THD (<5%) alternator fitted to the Westinghouse WPro12000. Since DuroMax have not revealed the THD spec for this generator, I can only assume it’s within the normal range of <25% for a conventional generator. I’m pretty sure, if this generator had a lower THD spec, the guys at DuroMax would have made a point of advertising this. It’s a rare thing, finding a low THD generator without an inverter, and a big selling point.

Like the Westinghouse WPro12000, the DuroMax generator has a robust metal control panel with a great selection of outlets. Again, not quite as accomplished as the WPro12000, in that GFCI protection is only provided for the 20A outlets. This can be more convenient when using a transfer switch, as there is less chance of complications arising from multiple GFCI protection. Though this is something your electrician would be dealing with. The DuroMax also doesn’t have protective covers for the outlets, nor does it have USB outlets, or a battery charging port. None of these are a real big deal, but it does place the Westinghouse WPro12000 at a bit of an advantage, once again.

I like the push to reset circuit breaker layout on the DuroMax control panel, it’s logical and easy to follow. Above each of the Duplex 120V 20A outlets, you have a 20A breaker. The same for the 120V and 240V 30A circuits, these have corresponding 30A breakers. The large 50A 240V outlet is protected by the main 2-pole breaker. This is the same setup as the Westinghouse WPro12000, with the obvious exception of GFCI protection for the main breaker. The three-position key start is easy enough, and the manual choke is positioned directly next to it for quick and easy starting. A digital display provides good information: Voltage, Frequency (Hz), Total Hours, and maintenance hours.

The DuroMax XP15000E is certainly a worthy, tough generator. I have no real complaints about this machine and the V-Twin engine is the most reliable that the brand has to offer. It is, most certainly, great value for money. There are many who swear by DuroMax generators for outstanding value, and the XP15000E is no exception. This generator has a great 3-year limited warranty and the brand has a pretty good reputation for customer service.  Yes, there have been disgruntled DuroMax customers. Show me a brand that does not receive bad customer care reviews.

It’s one of those things. A customer who does not receive the service they feel they deserve is going to be quick to complain. Anyone in the retail business can attest that many customers can have quite unreasonable expectations. They can cause quite a fuss when they feel hard done by. A satisfied customer, on the other hand,  is seldom going to take the time to say: “great job guys, thanks for the excellent service”. We always have a discrepancy between positive customer care reviews and negative ones.

Regardless of what others may say, I feel the DuroMax XP15000E is one of the best in its price range. Needless to say, I think the Westinghouse WPro12000 is simply better. It is, in fact, a remarkable machine and the lower than average price just makes it all the more fantastic. Bottom line, I believe the Westinghouse WPro12000 is outstanding value and an all-round magnificent industrial-grade generator.

 DuroMax Downloads:

DuroMax XP15000E User Manual [PDF]

Generator Watt Calculator [PDF]