The DuroMax XP15000EH is an excellent jobsite generator if you have a high demand for power. It’s a dual-fuel with 15,000W of start power and 12,500W of running power. This gives you a lot of flexibility in terms of the number of tools and equipment you can run. It’s also a great home backup generator, if you want that option.
It has GFCI outlets, a lifting bar, 100% copper windings and built with a heavy-duty metal frame. Besides gas, it can run off of propane, giving you 14,250W and 11,400W of power. It’s a great option for work or your home, depending on what you’re looking for. Read our full review of this DuroMax 15KW generator.
In this article we review a wide range of comparative construction site generators.
Choosing a Jobsite generator in 2022 can be quite a challenge because the demands put upon it will be harsh and sometimes extreme, depending on the type of industry you’re in. I know that everyone will have their own definition of what a “jobsite generator” is. This is the reason why I’m going to show you a range of quality heavy-duty generators. It’s possible that you’re just looking for a jobsite-grade generator for your personal home renovation projects.
Sadly, the Westinghouse WPro8500 that we featured prominently here in our first draft of this guide is not available in 2022. It was the perfect construction site generator but I guess sales weren’t strong enough to make it profitable. Don’t worry as we have a great blend of new models alongside some older classic generators for the jobsite.
Champion 100111 / 12KW
The Champion 100111 is a true powerhouse construction generator. It has a rare lifting hook, GFCI outlets and covered outlets to keep out the dust and rain. If you have the budget, this is Pro-grade, heavy-duty model designed to keep the jobsite powered,
Duromax XP10000HX / 10K
The Duromax XP10000HX is a new design in the HX series. Engineered for versatility, suitable for the jobsite or for home backup. It has GFCI outlets, to ensure your safety. Has carbon monoxide monitoring, keeping you safe. The HX series has a full range of sizes, including a Tri-Fuel generator (XP13000HXT). Excellent heavy-duty grade to keep your tools powered.
Intro : Best Jobsite Generators
The World is Changing —
In 2019, when we first wrote this buying guide, we were in love with the Westinghouse WPro8500 as it was an affordable, well-made jobsite generator, but in 2022 you can’t buy it. It’s a shame. I’ll be leaving the original review in this guide, at the end of the article, for reference only. It’s interesting to be able to look back at older products and compare them to how generators are evolving.
I grew up in an era when the Sears catalog was always a big deal when it was delivered (by mail) to our house. It was cool when I was a kid but looking at an old Sears catalog today fills me with nostalgia as it reminds of the world the way it used to be. I suppose I still have an affinity for well-designed products, even if those products are discontinued portable generators.
Even the CAT RP series of generators from the original guide are obsolete, discontinued. It’s somewhat surprising because CAT is closely connected to the construction industry. I can’t help but wonder what went wrong with these high quality generators from leading brands.
Westinghouse is a relative newcomer to the portable generator market. I first discovered them about a year ago, when I reviewed one of their smaller, home and camping generators. At the time, they had very few models available, but they seem to be growing fast.
Because, I knew nothing about the company when I wrote my first Westinghouse review, I did a lot of research into the Westinghouse history. I was wholly impressed with what I discovered. The Westinghouse Electric Company is one of the oldest power generator and electrical engineering developers in the US. Not only were they responsible for building some of the first power generation plants in the US (over a hundred years ago), they’ve gone on to introduce the world to highly innovative electrical products. So essentially, Westinghouse are giants in the field of industrial and large scale electrical product development.
At first, I was amazed at how cheap the first Westinghouse generators were. I’ve reviewed quite a number since my first encounter. In my first review, I predicted that their prices would increase. They entered a new market and took on the big guys, like Honda, head on at a very competitive price. My predictions seem to be proving correct. The new WPro8500 is not cheap, and nor should it be. With that said, it’s actually incredibly good value for money.
CAT RP12000E | A True Powerhouse Jobsite Generator
Features : CAT RP12000E
If we look at the three generators chosen for this review (Westinghouse WPro8500; Cat RP7500E and Generac 15000E), I’d say that the Westinghouse is the biggest Rival to the Cat. The Cat costs a few hundred Dollars more, yet the Westinghouse produces a kilowatt more running power and more than 2-kilowatts extra peak power. I know that Cat have a long standing reputation for building the best jobsite generators. But it looks to me like Westinghouse is giving them a run for their money.
The WPro8500 is a true industrial-grade jobsite generator, able to compete with any of the best in the world. When you look at your buck per watt, along with a high quality standard, the Westinghouse emerges as an outright winner in every department. Well, that’s my opinion at least. There will be those who will disagree and I certainly can’t deny Cat their dues. Like many, I’ve always been a huge fan of the brand.
When reviewing these jobsite generators, I’m going to pit the Cat and the Westinghouse head to head, which I believe are direct rivals (along with DeWalt and Honda which we’re not including in the review this time around). Of these, the Westinghouse is the slightly cheaper, more powerful option. This is what I really like about the Westinghouse, you’re getting a whole lot of generator for your money. The Generac cannot be directly compared to the other two jobsite generators in this review. It’s roughly twice as powerful as the others and costs about twice as much, actually more than double the price of the others.
Anyone who knows their generators has to concede that Generac is one of the best names in the business. These guys specialize in generators of every type and put everything into building the best. Of course, we all have our opinions on what might be the best generator brand. But no one can deny that Generac is up there with the best of them. This also means that you’re paying for this reputation. But paying a premium for superior quality and brand reputation always makes sense to me. You know what you’re getting.
Westinghouse iPro4200 | Compact Jobsite Generator (review)
Apart from the even more powerful Generac 17500E, I don’t know of any portable jobsite generator that can match power output of this one. So the Generac 15000E has the watts that allow you to run an air compressor (of just about any size), along with a bunch of high-current tools, like table saws and large cut-off angle grinders without any compromises. You just have to pay for it. If you need the extra power, there really is no other alternative. So despite the vast difference between the Generac and the other two jobsite generators, we’re suggesting this model as an alternative if either of the other two simply can’t meet the wattage requirements of your jobsite needs.
Because of the type of generators that I’ll be reviewing, I’m talking directly to contractors who are looking for a rugged and dependable jobsite generator. Though, there will be a few home, perhaps even RV owners, who want a generator this powerful. You could supply enough power to run just about all of your household needs with the Cat or Westinghouse generators.
The Generac matches the output of smaller standby generators, designed and built specifically to run an entire house during a power outage. So, even though I’ll be looking at supplying the wattage for high-power tools and equipment used on a jobsite, you can compare these items to heavy household appliances and equipment, like refrigerators and large air conditioners. These are brilliant jobsite generators that won’t be out of place in a domestic environment.
Westinghouse WPro8500 | Best Jobsite Generator
- 11,500 Peak Watts / 8,500 Running Watts
- Low Noise : 74 dB operational volume
- 17.5 hr. Run Time at 25% Load / 12 hr. Run Time at 50% Load
- Electric Start and Remote Start (Key Fob Included)
- 457cc Westinghouse OHV Engine with Cast Iron Sleeve
- Fuel tank allows for 17.5-hours of run time at 25% load
- OSHA, EPA, and CARB compliant with full panel GFCI equips this generator with industry standard safety features
- 3-way ignition start including electric start, remote start with key fob, and recoil start allows accessibility based on which is best for you
- 13.5 HP 457cc OHV 4-stroke Westinghouse engine is constructed for professional applications
- Hassle-free 1-touch electric start push button with remote start key fob lets you start you generator up from up to 109 yards away
- Transfer switch ready
- Water-resistant outlets with durable rubber covers
- Automatic voltage regulator, automatic low oil shut-down, and overload protection provides peace of mind
- VFT Data Center display gives you real time updates for : voltage output, frequency, and lifetime hours
- Rugged steel frame with supplementary lift bracket and 10 in. heavy-duty never-flat wheels with foam-grip handle offers easy worksite portability
- Clean Power – Safe for electronics (<5% THD)
- OUTLETS :
- (1) 120-Volt 20 Amp 5-20R standard home outlets,
- (1) 120-Volt 30 Amp L5-30R receptacle,
- (1) 120-Volt/240-Volt 30 Amp L14-30R receptacle
- (2) 5-Volt USB ports
- Smart Idle – Automatic Efficiency Idling
- OSHA compliant with a GFCI protected control panel, delivering power and safety to your job site.
- Includes Lift Hook : Easy to move with a robust lift hook.
- Low THD Provides Clean Power : Produces <5% Total Harmonic Distortion (THD) giving you clean power for electronics.
- Electric Start and Remote Start with Key Fob
- Circuit protected and Low-Oil Shutoff
- Includes : Battery, Battery Charger, Key Fob, Oil, Funnel, Tool Kit, Manual, and Quick Start Guide.
- 3-Year Residential Warranty, and 1-Year Commercial Warranty and Lifetime Technical Support. (This is true for all Westinghouse generators)
Documents for the Westinghouse WPro8500 :
✓ Need More Power : Consider : Westinghouse WGen12000 —12000-rated watt and 15000-peak watts
Could we please have a big drum roll as I introduce to you the one and only Westinghouse WPro8500! Okay, I’m being a bit dramatic here and I’ve already expressed my admiration for this grand jobsite generator. So let me rather get onto the product review and let you decide for yourself if it is indeed a great product. Apart from the kilowatts needed to run compressors, power tools and the like, what exactly are we looking for in a jobsite generator? I’d say that rugged durability is high on the list.
A jobsite is no place for sissies and that also applies the generator that we’re using. So this makes the frame and mountings very important. Your jobsite generator is most likely going to be loaded and offloaded from a truck on a regular basis. A jobsite always has hazards and your generator is probably going to take a few knocks over the years. Then there’s all the dust and debris that can cause unwanted harm, even when we can’t see it. So when I’m looking at a jobsite generator, I take all of this into consideration. I can say, without a doubt, that the Westinghouse WPro8500 makes the grade as a worthy and dependable jobsite generator.
Let’s start with the engine. This is vital to the running of the generator and you want something that’s going to make the grade. The Westinghouse 457cc, OHV, 4-stroke engine is a beast worthy of recognition. With a cast iron sleeve and 13.5 horsepower, this engine is not only going deliver the power needed, it’s going to keep doing so for many years without any major repairs. This engine is EPA and CARB compliant. So no matter where you are in the US, it’s going to meet any emission control regulations. Unfortunately, it’s not certified for Canadian emission standards. But I think this is more about administration than the engine itself. My guess is that Westinghouse has yet to apply for Canadian approval.
Standing Tall : The WPro8500 is a bargain considering what you get
As with any engine of this size, one wants an electric starter. There’s nothing worse than tugging on a heavy recoil starter on a cold winter’s morning. Well, not only does the Westinghouse have electric starting, it also has a remote control. It is supplied with a fob that you can use within 109 yards of the generator. This is great for saving fuel or reducing your noise, you can easily switch your generator on and off from around your jobsite. If you had to keep walking back and forth to do this, you’ll be more likely to just leave the generator running all day long – even when you’re not using it. It has an idle control that will drop the revs when there’s no load. So even if you don’t switch it off when there’s no load, it won’t burn through as much fuel. It also has an automatic choke, simplifying cold starts.
The Pulse-Flow muffler does a good job reducing the noise from that huge engine and it has a spark arrestor. Westinghouse claim a noise level as low as 74dBA. This isn’t very useful information though, I presume that this noise level would be at idle – that’s when the engine is at its quietest. What kind of noise levels you could expect when you’re using the generator at 50 -100% of its capacity, is anyone’s guess. It would probably exceed 80dBA. Then again with the din of a jobsite where you have any number power tools, hammers etcetera, noise is par for the course. There really isn’t such a thing as a quiet jobsite generator. They all use big engines in an open frame without noise insulation.
How is the fuel consumption? After all, this is the expense that you will be dealing with day in and day out. The Westinghouse WPro8500 has a pretty huge 6.6-gallon gas tank. This is great for working long hours without refueling. At 25% load (an average of 2.1 KW), you can run the generator continuously for 17.5-hours. Though, it’s more likely that your average power consumption is going to be in the region of 50% of the total running load (4.2 KW). At this load, the Westinghouse will keep chugging for around 12-hours on a tank of gas. This means it’s highly likely that you’ll be able to work for an entire day without having to stop and fill the tank.
This all sounds really great, but in order to accurately compare the fuel consumption of one generator to another, we need to look at our fuel consumption in terms of kilowatt-hours per gallon. This is the same type of comparison we’d make when comparing miles per gallon for a car or truck. Using this model, the Westinghouse WPro8500 works out at an astounding 7.64 KWH/G.
This is an incredible figure. Generally, I consider anything above 5 KWH/G to be great. The long and short of it is that your WPro8500 is likely to cost you around 25% less in daily fuel costs when compared to many of the most fuel efficient generators. Compared to some, your fuel cost could be half as much. That’s a lot of money year on year if you’re a busy contractor who relies heavily on your jobsite generator. That’s certainly something worth thinking about when you decide which is going to be the best jobsite generator for your business.
I’m sure any contractor would agree that a rough and ready, rugged design is everything when it comes to dependable jobsite equipment. Here, the Westinghouse continues to impress. The really thick steel tubing frame goes all the way up to protect the steel gas tank and it has a heavy-duty lifting eye with a hook that’s supplied with it. That’s certainly going to come in handy when you consider that this is a heavy 216-pound industrial-grade generator.
The alternator and engine are attached to the frame using heavy-duty four-point rubber mountings. This is the best way to ensure a good, strong system with low vibration levels. Less vibration means there’s little chance of components working loose over time. Moving the generator around the site is a pretty easy task. It has a well-padded fold-down handle and a heavy-duty wheel kit.
The alternator is state of the art with an Automatic Voltage Regulator (AVR). I find the Total Harmonic Distortion (THD) figure to be quite amazing (less than 5%). Inverter generators usually have a THD rating of less than 3%. So for a standard (non-inverter) generator this is as good as it gets. If you think that even the grid power that supplies your home can sometimes exceed 5% TDH, this generator actually supplies clean power that is as good as, possibly better than the power you get from the main supply.
You can charge your cell phone or plug in your laptop on site, without any worry of damaging your sensitive electronic equipment. It produces a maximum running current of 8500 watts with a peak (starting) current of 11,500 watts. This gives you that extra power that you need for starting heavy equipment, like a table saw or air compressor. You have both 120V and 240V at your disposal. Using 120V, the generator has a maximum peak of 96 Amps and a constant supply of 71 Amps. At 240V, the peak power is 47.9 Amps with 35.4 Amps constant power.
In keeping with the rest of the generator, the control panel is heavy-duty steel and has a great array of outlets. One thing I really like to see, particularly on a jobsite generator, is plastic covers sealing the electrical outlets. This keeps the dust and moisture out. So here’s another plus for the Westinghouse WPro8500. Everything is laid out in a neat and logical manner. There are two duplex, 120V, 20A (5-20R) standard power outlets. This gives you a total four 20A 120V power points. Above each of these duplex outlets, are two individual 20A overload circuit breakers – one for each group of two outlets. Adjacent to these are a 120V, 30A (L5-30R) twist-lock outlet, and a 120V/240V, 30A (L14-30) outlet.
In keeping with OSHA standards, all the outlets are protected by a single GFCI breaker. Above the outlets, you’ll find a simple 3-position run-stop-start switch. You need to open and close the fuel supply with a manual valve fitted to the fuel line. There’s also a recoil starter positioned nicely to the side of the electric start controls. If you find that, for some reason, your battery fails, you can simply reach over and do things the old-fashioned way, by tugging on the rope to start the generator.
There’s a 12V DC battery charging port and a 5V DC USB port. It has a nifty “Data Center” which is basically an LED display that toggles between voltage, frequency, and total running hours. The fuel gauge is on the tank, like most generators that come fitted with a gas gauge. It also has a button for pairing the remote control fob. Though you’ll only need to use this if you replace or buy additional fobs. The one supplied with the generator has already been paired at the factory.
After thoroughly reviewing the Westinghouse WPro8500, looking at it from every perspective, I can only conclude that this is an incredible jobsite generator. It’s built to last under very tough conditions and has the power to run a multitude of heavy tools simultaneously. The economy factor is what really draws me to this generator. Not only is it a little cheaper than any of the other high-end jobsite generators in this class, it has unbeatable fuel consumption. When you look at your average generator fuel bill over the many years that you’ll be using this generator, it’s going to amount to a small fortune. The Westinghouse has a 3-year residential warranty and 1-year for commercial use.
It’s not all good news though and this is something I have to point out when reviewing Westinghouse generators. When you look at the established generator brands, there’s a wide network of dealerships around the country. This means that service and parts should never be a problem. Though, this isn’t always the case.
Being quite new to the consumer generator market, Westinghouse doesn’t yet have the convenience of a dealership network. Judging by their popularity, I guess we will see Westinghouse dealerships mushrooming around the US in the years to come. However, as things stand at the moment, if you need spare parts or warranty repairs, you need to contact Westinghouse directly. Parts will be shipped to you, but there will be a delay. In the case of a warranty repair, the generator has to be shipped to Westinghouse and then returned to you – an even longer wait.
VIDEO | A Closer Look
I’m sure that any reputable generator repair shop would be able to maintain and repair the generator for you. That’s if you don’t do most of the stuff yourself. So the only real issue is that of waiting for spare parts. This might not be much of an issue as I can’t see the WPro8500 breaking too easily. But, as we all know, accidents and breakages happen – especially on a busy jobsite.
So I’ll conclude by saying that the lack of dealership representation is the only drawback to buying a Westinghouse generator. Though, to be fair, this is probably going to change. Since this generator is going to be with you for a long time, the inconvenience may not really affect you. Personally, I’m inclined to accept this disadvantage in favor of the economy factor that comes with purchasing the Westinghouse WPro8500.
CAT RP7500E | Best Jobsite Generator
Excellent jobsite generator built to withstand tough working conditions. Running power : 7500W / Starting Power : 9375W
- Higher running wattage for light industrial usage
- Keeps your jobsite equipment running at peak performance
- Controls all on one side for simple operation
- 420cc engine / 7.9 gallon tank
- Keeps you working for up to 11 hours
- EPA Compliant
- 7500 Running Watts / 9375 Starting Watts
- Powers You For Up To 11 Hours
- 6 Outlets, Including 120v and 240v 30a Twist-Lock Receptacles
- Assembly Tools, Engine Oil and Funnel Included – Just Add Gas
- Electric Start and LED-Lit Control Panel
- Padded Double Hinged Handle and Solid Rubber Wheels
- 3-Year Limited Warranty for Parts and Service for Full Term
I feel a small sense of disloyalty to the faithful old Cat when rating the Westinghouse WPro8500 as the best jobsite generator in this class. For years, the Cat RP7500E has been my absolute favorite in this Category. The Honda EU7000iS may be better, but its high price tag kind of puts it out of the running. I still feel strongly about the Cat, it’s a remarkable generator. It’s just the value for money aspect that has caused me to lean toward the thrift-wise Westinghouse.
I know there are plenty of die-hard Cat fans who are always prepared to pay a bit extra for this brand. I can’t argue with this, I’m also one of those guys who sees great value in a brand that I’ve come to trust. When it comes down to it, Cat are the jobsite heroes. This is not just when it comes to generators, but virtually all the heavy-duty equipment needed on a jobsite. Even when we’re talking generators, the Cat RP7500E is a baby in their lineup. Cat make generators large enough to supply a small town. These guys are legends in the business and that should never be overlooked.
I almost feel no need to point out the supreme rugged dependability that the Cat RP7500E offers. This is a Cat and that kind of says it all. For those who need to be enlightened, this machine is 192.5 pounds of heavy-duty high-grade steel. Okay, the Westinghouse weighs a little more than this and some may think that it should have a higher level of tough steel components. To me, it looks like they’re pretty much even in this regard. The ±20 LBS weight difference can be ascribed to design rather than build-quality. For one thing, the Cat has a lithium-ion battery which makes up for most of the weight difference and this is probably a better battery. The frame, wheels and excellent fold down handles all indicate a level of quality that can’t be beaten. Like I said, this is a Cat and it goes without saying that this generator is designed and built to survive the toughest jobsite conditions.
The 420cc, OHV engine is slightly smaller than that of the Westinghouse. But, then again, the Cat has a lower watt output – 7500W running power and 9375W starting power vs 8500W/11,500W for the Westinghouse. In terms of engine output related to electrical watts produced, they both come out at an even ratio. Both are great, reliable engines with enough power to do the job. The Cat RP7500E only has EPA certification. California residents need not be disappointed, they have a separate model that’s CARB certified – I think it may cost a little more, but this can’t be too much. Other than this, I can’t see any significant difference in comparing the engines used for these two generators. The Cat also has both electric and recoil starters.
When it comes to fuel consumption, the Cat performs well (better than most). However, the exceptional fuel economy of the Westinghouse is what really turned my opinion to favor this generator. How do they compare? The Cat has a larger 7.9-gallon gas tank and a smaller engine. This would lead one to assume that you’re going to get a longer runtime from a tank of gas. Alas, this is quite the opposite. At 50% load (3750W), the Cat is rated for 11-hours runtime.
When we compare it to the Westinghouse, we’re looking at fewer watts, more gas, and less hours for the Cat. This is a lose-lose-lose situation. Do the math and it it’s easier to see the difference. The Cat gets 5.2 kilowatt-hours to the gallon and the Westinghouse gets 7.64 KWH/G. For every $100 you spend on gas to run the Cat, you’re spending about $68 for the Westinghouse. Add all this up over a few years, and you could end up saving enough money to buy another generator for your savings.
I can easily see why one would be prepared to pay around two-hundred bucks more when buying the Cat. This is a once off expense and, hey, this is a Cat – worth the extra price if you’re sold on the brand. But if you’re then going to be spending a hundred or more every month to run the generator, it’s hard to look past the Westinghouse. If it were an inferior generator, there would be a plausible argument in favor of the Cat.
All indications are that the Westinghouse is up to the Cat standard. Granted, we have to give the Westinghouse some time to prove itself. Though based on many years of industry experience, I’m willing to bet that the Westinghouse is going join the big guys with a reputation for brilliance. Sorry Cat, I am a loyal supporter, but when I look at the figures, the Westinghouse just makes so much sense. By the way, I’m not a salesman for Westinghouse, this is my honest opinion. I call it like I see it.
When it comes to user features and controls, the Cat is really great. Many like the LED backlight for the control panel. It’s great in poor lighting. It has a manual choke, like most generators. So the Westinghouse has, once again, a slight advantage when it comes to easy operation. These being the automatic choke and remote control for long-distance starting. Other than this, they are pretty evenly matched. The Cat has the same AC outlets with dust-proof covers. You get 2 X duplex 20A, 120V outlets, a 120V, 30A outlet, and a 120V/240V, 30A outlet. The circuits are protected by overload circuit breakers, but there’s no GFCI protection. It has an LED display that’s very similar to that of Westinghouse and a standard gas gauge on the tank. It doesn’t have any DC outlets, which is a minor disappointment and certainly not a deal breaker.
For many years, I’ve rated the Cat RP7500E as the best jobsite generator in the 7000W – 8000W range. Then, along come Westinghouse and throw a cat amongst pigeons. The WPro8500 is cheaper, more powerful, and much more fuel efficient. I can’t say that it’s a better generator than the Cat, it’s just more economical. If I look past the financial benefits, I’d probably still stand by the Cat, purely for its unblemished reputation of many, many years. That does count for a lot and it’s going to take some time before Westinghouse has the chance to earn theirs. Not to mention the dealership issues. Cat offer the best warranty (along with Honda) on their industrial-grade generators. This being 3-years, regardless of whether you’re using it for commercial or residential use. This warranty and the Cat legacy could easily lead many to look past the financial implications and choose the Cat.
*NOTE : Customers (original purchasers) also have the option to extend the Warranty Period by one (1) year for a total of three (3) years by registering their Cat generator within thirty (30) days from the date of purchase.
CAT RP12000E — Powerful Jobsite Generator
If you want to stick with a CAT industrial generator but need more power then look no further than the CAT RP12000E with 15,000 starting watts and 12,000 running watts. There’s plenty of power and outlets to run multiple tools and electrical devices at once.
- 12,000 W Running / 15,000 W Starting
- Large fuel tank and idle control for extra-long run times
- 11.7 Hrs of run time (at 50% Load)
- Class leading number of outlets powers more tools at one time
- Powerful 670cc V-Twin OHV motor with pressurized oil system
- All copper generator produces clean power (total harmonic distortion (<5%)
- Weight balanced design for easy mobility
- Removable lifting eye and ergonomic design for easy maneuverability
- EPA Compliant
This CAT generator has been engineered with a rugged steel frame, lighted control panel, and a padded bar-style handle.
Generac 5734 GP15000E | A True Workhorse
15,000-Watt Generator with Electric Start. A true workhorse and one of the best jobsite generators on the market.
- Generac’s OHVI engine incorporates full pressure lubrication with automotive style spin on oil filter for longer life engine.
- Idle control reduces noise and conserves fuel for extended run-times.
- Hour meter tracks maintenance intervals.
- Low-oil pressure shutdown automatically safeguards engine from damage.
- Large-capacity fuel tank with incorporated fuel gauge provides durability and extended run times.
- Hardened 1 1/4″ steel tube cradle for added durability and strength.
- Integrated lifting eye for easy transport and security on the job site.
The review of the previous two generators took quite a few words. That’s because I felt a need to make a detailed comparison between the two. It won’t take quite as much to review the Generac GP15000E, simply because there is no comparison. If you need a portable jobsite generator capable of delivering 15,000W running power and a whopping 22,500 watts of starting power, this is going to be your only option. Unless you consider the much more expensive Motorhead with a peak output of 25,000 watts.
The Generac GP15000E is a truly industrial-grade jobsite generator with a 1¼” steel tubing frame and cradle. The frame has additional lateral support and is probably the toughest I’ve seen. I suppose if you’re going to support the hefty 363-pounds that this machine weighs, and do it properly, you need to go that extra mile. The handle doesn’t fold down, it forms part of the frame. This gives the structure extra support and offers some protection to the extruded control box from falling objects. Basically, there’s an extra element of toughness to this jobsite generator.
To provide all those kilowatts, you need a mighty big engine. So the 992cc OHV engine comes as no surprise. It’s an advanced power plant with pressurized lubrication. This means it has an oil pump like a car engine, instead of the usual splash lubrication used for most portable generators. It’s a powerful, very reliable engine with electric starting. Naturally, an engine of this size is going to be a thirsty beast. For this reason, they’ve fitted a really large 16-gallon gas tank with a fuel gauge on the tank.
If you’re concerned about your fuel costs, the Generac isn’t going to win you over. It’s not the best in this regard – far from it. At 4.7 KWH/G, its fuel economy is, at best, average when compared to the general expectations that I have for a portable generator. It’s not the worst though. I’ve seen much less powerful generators with a fuel consumption of around 3.5 KWH/G.
Because of the high-amperage output, the Generac GP15000E has a greater array of power outlets. Like most, it has two duplex 120V, 20A outlets. One of these has GFCI protection. So you have the option of using two 20A outlets with GFCI protection or two without. It also has the standard 30A outlets – one is 120V only and the other 120V/240V. In addition to this, the Generac has a 50A, 120V/240V outlet with a 2-pole circuit breaker. The other AC outlets have the usual single pole “push to reset” circuit breakers. It has a 12V, 10A outlet for battery charging and a digital hour meter. I’m a little disappointed to see that the power outlets have no dust-proof covers. I consider this to be quite important on a jobsite generator where dust can be a problem. However, this is the only area where I’m not too impressed with the Generac.
It’s not too easy to view a 363-pound generator as being portable. But they’ve done all they can to make this as manageable as possible. It has a lifting eye and huge 12.3 pneumatic wheels. Lifting this machine is never going to be easy, but wheeling it about isn’t too tough. Those wheels can handle some rough terrain and it’s possible to move the generator over most jobsite obstacles with relative ease.
As one of the most powerful jobsite generators that you can get, the Generac GP15000E is the most logical option. It’s not cheap, but then again the only alternative that I know of is even more expensive. If you need to run the type of equipment that requires 15,000 running watts, you have to be prepared to pay for it. For residential use this generator has a 2-year warranty and not so impressive 1-year warranty for commercial use.