The 1Diesel or Diesel-powered devices are not the most typical type that exists but they are an appropriate alternative to the conventional portable devices operating based on gasoline. Similar to vehicles, a device performing on diesel is more fuel-efficient which is only one of the perks of this alternative.
So, how does a diesel generator compare to a gasoline type and how do you choose which one better meets your electrical demands? Here is a practical buying guide to help you choose the wisest option including 5 of the best choices that you can order today. Linquip provides all the information you need about Diesel Generator, no matter whether you are a buyer, a user, or a researcher. At Linquip, we try to address all of your needs related to diesel generators. Start by exploring “What Is Diesel Generator?” at Linquip to learn the basics.
As a user, do you need diesel generator devices and equipment? Linquip has a comprehensive selection of Diesel Generator Products in Linquip’s free database. Are you looking for the best generator equipment and device prices? Linquip enables you to send a request and receive quotations from all Diesel Generator Suppliers and Companies at no charge. To pick the best option according to your particular needs, you only have to consult Diesel Generator Experts in Linquip.
A portable diesel generator is a suitable solution for a normal home backup and employs on remote sites. Once deciding between propane, gasoline, or diesel portable device, you’ll see the pros and cons for each kind. A diesel generator’s main benefit is that it provides superior fuel efficiency, which means you’ll obtain a longer lifespan and spend less on fuel overall. Visit here to see the importance of them completely. Before you go out and order the cheapest diesel generator you see, it’s essential to realize that not every diesel-powered generator is applicable.
List of 12 Best Diesel Generator in 2024
According to the factors that we will mention in this article, Here is the List of 12 Best Diesel Generator in 2024:
- Generac 6864 XD5000E Buy Now
- Cummins Onan Quiet Series RV QD10000 Buy Now
- Power Products Sigma 7000W Buy Now
- DuroStar DS7000Q – Dependable Power & Great Value Buy Now
- Gilette GEN-PRO GPED-65EK Diesel – Big Size & Big Power Buy Now
- Generac 6864 Portable Generator Buy Now
- AMICO Power AHW6000LE Diesel Welder and Generator Buy Now
- DuroMax XP12000EH Buy Now
- Champion Power Equipment 10000-Watt Portable Generator Buy Now
- Westinghouse WGen7500DF Portable Generator Buy Now
- Caterpillar C32 Diesel Generator Set – Model: CAT C32 ACERT Buy Now
- FG Wilson P250-5 Diesel Generator – Model: P250-5 Buy Now
How Did We Select the Best Diesel Generator of 2024?
The Best Diesel Generator of 2024 is an important topic because it helps buyers choose the best generator that meets their electrical demands. Linquip’s comprehensive selection of Diesel Generator Products in Linquip’s free database provides all the information you need about Diesel Generators, no matter whether you are a buyer, a user, or a researcher. Linquip tries to address all of your needs related to diesel generators.
We have selected the Best Diesel Generator of 2024 based on analyzing more than 15 web pages and reviews, consulting with our experts, and considering the most important features that buyers look for in a diesel generator. We also considered the price range and customer reviews to ensure that we recommended only the best diesel generators that provided value for money. Our team of experts has analyzed each product to ensure that it meets our quality standards and provides reliable performance.
Fuel Efficiency and Emissions: In our selection process, we paid close attention to the fuel efficiency of each diesel generator. Models that offer higher fuel efficiency can significantly reduce operational costs over time, which is a crucial factor for many buyers. Additionally, we considered the emissions level of each generator, as environmental impact and compliance with emission standards are increasingly important considerations in today’s market.
Service and Support Network: The availability and quality of after-sales service and support were key factors in our selection. We looked for generators backed by manufacturers with a strong network of service centers and support teams. This ensures that buyers have access to timely maintenance, repairs, and technical assistance, which is vital for the longevity and reliability of the generator. A robust service network also gives buyers peace of mind, knowing that support is readily available when needed.
Top Diesel Generators
1. Generac 6864 XD5000E
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Specifications
| Surge Power | 5,500 watts |
| Running Power | 5,000 watts |
| Tank Size | 12 gallons |
| Run Time | 32.4 hours at 50% load |
| Fuel | Diesel |
| Noise Level | N/A |
| Weight | 254 lbs |
| Start Type | Electric |
General Descriptions
Although this Generac type has the lowest output in this top 5, it is by far still the best choice that exists. The Generac 6864 is the handiest, presents clean power, has a model fit for heavy-duty usage, and provides an incredibly long run time.
First off, consider its fully welded 1.25” steel structure that performs as a protective outer frame for the industrial motor. The top has 3 separate sides, the middle one being an integrated carrying eye so that it can be moved simply on construction sections or attached to the wheel kit quickly make it a greatly portable design.
The motor is 435cc from the Yanmar LW type which provides an air-cooled direct system. Fueling this engine is a great 12-gallon diesel source that can keep its operation for a whopping 32.4 hours on a half load.
In addition to operation for a long time, this type also delivers a reliable output that is close to the amount of an inverter device with only 5% total harmonic distortion. This makes it robust to attach your sensitive electronic instruments making this an appropriate type for residential use, as well.
It has a control panel which takes up about a quarter of one side. Here you will find the outlets (1x 30amp 120/240-volt twist lock, 1x 30amp 120-volt twist lock, 4x 20amp 120 volts), power switch, central circuit breaker, and hour meter.
The battery is not combined with the structure, so you will have to order this separately if you want to utilize the electric start although there is a designated gap for it. So during the setup process, you don’t have to worry about carrying 2 separate components with you.
The drawback is that it is not the most affordable choice for its output because a gasoline-powered type in the 5000 watts level is probably just half or even a quarter of what this Generac XD5000E costs.
2. Cummins Onan Quiet Series RV QD10000
Specifications
| Surge Power | 10,000 watts |
| Running Power | 8,000 watts |
| Tank Size | N/A |
| Run Time | N/A |
| Fuel | Diesel |
| Noise Level | 70 dB |
| Weight | 767 lbs |
| Start Type | Remote |
General Descriptions
Particularly modeled for RVs, this is a strong diesel generator that can control the operation of 3 AC units simultaneously. Due to its 10,000 watts surge power and 8000 watts of running energy, this is also an appropriate type of home standby generator.
There is no fuel supply inside the frame, so you should attach a separate fuel tank to achieve the engine running. Keep in mind that it applies 0.43 gallons of diesel per hour during a 50% load performance.
One of the main features of this type is that it is technologically improved with a computer-controlled variable velocity, a microprocessor that can self-analyze for any issues and troubleshoot, and a pure sine wave output. These properties provide you with a high-performance and low-maintenance diesel generator.
The constructor has taken care to include multiple noise-canceling parts such as a muffler, casing, and enclosed cooling system, which brings the rated noise state down to 70 decibels, meeting the demands of the US National Park (UNP) sound. This design also completely complies with EPA and CARB (California Agency Responsible for environmental protection matters) rules, so you can use your device in any US state.
Where an electrical start is a standard for diesel generators, this model takes it one step further with a remote start. The package includes a key fob so that you can start the engine from a distance which comes in handy when you are on the other side of the RV.
The main disadvantage is that it is not simply portable. Weighing over 750 pounds without any pulling handles or tires integrated into the structure, this is not a system meant for mobile use.
This is a great off-grid energy source if you are planning on epic road travel in your RV or as an emergency standby device for your home. It has a low total harmonic distortion and high output making it the smarter option for connecting sensitive instruments.
3. Power Products Sigma 7000W
Specifications
| Surge Power | 7,000 watts |
| Running Power | 5,500 watts |
| Tank Size | 4 gallons |
| Run Time | 8 hours at 50% load |
| Fuel | Diesel |
| Noise Level | 68 dB |
| Weight | 363 lbs |
| Start Type | Electric |
General Descriptions
The Sigma by Power Products has approximately more potential than the Generac 6864. It has 7000 watts of surge energy and 5500 watts running power which is adequate to perform several air-conditioning systems and the main household devices such as the water pump, refrigerator, freezer, and electric stove.
The control panel is quite elaborate at first look but when you investigate it precisely, you will know it is all pretty straightforward. There are 4 power outlets; 1x 30amp 120-volt twist lock, 2x 20amp 120-volt, and a second twist lock that you can change the output between 120 volts and 240 volts.
Other properties on the control panel are the fuel gauge, low oil warning light, and voltmeter. It has an internal fuel source with a 4-gallon potential but you can also attach it to an external higher fuel tank for a longer operation time.
Power Products explains that it has an operation time of 8 hours on a 50% load which is decent for its output. Although, if you need this device to perform overnight, it might be a smart concept to employ some external fuel tanks.
This great yellow beast weighs 363 pounds but Power Products has included a pulling handle and wheels so that it can still be used (even though you’ll probably require 2 people pulling for it to budge). Otherwise, being larger and heavier than a gas-powered design is a usual downside for diesel generators.
Significantly, the Sigma is one of the quieter types with a rated noise state of 68 decibels. Diesel engines are famous for being louder, so this reasonable sound level for the value of power provided is a welcome advantage of this budget device.
This is a straightforward device but quite a heavy diesel type which might discuss the lower price compared to the similar models. If budget is the most vital feature, then select the Sigma but consider that you will be foregoing portability and improved properties.
4. DuroStar DS7000Q – Dependable Power & Great Value
Specifications
| Surge Power | 6,000 watts |
| Running Power | 5,500 watts |
| Tank Size | 3.83 gallons |
| Run Time | 12 hours at 50% load |
| Fuel | Diesel |
| Weight | 300 pounds |
| Start Type | Recoil and Electric |
General Descriptions
DuroStar devices are popular for being dependable. This 4-stroke, direct-injection, and single-cylinder diesel system is a beast, perfect for backup application during a power outage.
It provides 6,000 surge watts and 5,500 running watts. Running this device is simple. There are two different methods to perform it: an easy turn-key electric start and a standard recoil start. Technically, there’s a third way that’s even simpler since you can enable the electric to start employing a remote control.
The basic panel has everything you require including a voltage meter, a low-oil alert light, a low fuel indicator, circuit breakers, and power outlets. There are two 20-amp, 120-volt, 3-prong outlets (with ground fault interrupter). These will work for all of your standard household appliances.
For high-powered tools, like on a farm or worksite, there are two twist-lock outlets; one 120-volt, 30-amp, 3-prong outlet; and one 30-amp, 120/240-volt, 4-prong outlet.
Diesel generators are fairly loud, but this type has some effective noise-reduction elements in place.
There is a vibration isolation connection between the base frame and engine/alternator feet. This not only decreases the noisy vibration but also improves the stability of the machine overall. There is also a very silent muffler and some extra soundproofing.
The DS7000Q has a fairly long operation life cycle. You can expect it to operate for close to 12 hours at a half load. It has a great 3.83-gallon fuel source. There is a liquid gauge so you can keep an eye on how much fuel you spent.
Moving this device around would be a problem (as it weighs 300 pounds) were it not for the wheel pack. That said, the wheel pack makes it pretty simple to move this device.
5. Gilette GEN-PRO GPED-65EK Diesel – Big Size & Big Power
Specifications
| Surge Power | 6500 watts |
| Running Power | 5,000 watts |
| Tank Size | 4 gallons |
| Run Time | 10 hours at 50% load |
| Fuel | Diesel |
| Weight | 200 pounds |
| Start Type | Electric and Recoil |
General Descriptions
This is the biggest diesel generator on the list and is 48 x 48 x 48 inches. That said, it’s also the most weightless, weighing only 200 pounds. The steel structure is pretty solid, and the handles make it completely simple to lift. To make moving even simpler, you can buy a wheel pack separately.
This device operates based on a 9-HP, Kohler KD420 direct-injection, air-cooled engine. The 4-gallon fuel tank will provide you adequate fuel to perform for around 10 hours at 50% load. It has 6,500 surge watts and 5,000 watts of running power. A fuel gauge is used to keep an eye on when you require to refuel.
This device has both a recoil pull-start and an electric one. There is no remote start feature. You have 6 outlets on this instrument: four 120V, 15-Amp (GFCI) outlets, one 120V, 30-Amp twist outlet, and one 120/240V, 50-Amp outlet. Its control panel contains an hour meter, a voltmeter, and circuit breakers.
There are an automatic shutdown feature and a low oil alert to protect the system. Also, there is a runtime gauge on display and some extra alert lights for informing you when it’s time to recover the oil, change the air filter, and repair the engine.
Like most diesel devices, you can mainly go longer before needing maintenance than you would with a gasoline generator.
Because of this, these service detector lights are beneficial, so you don’t have to keep track of how much time you’ve run the system.
To provide clean power, there is Power Assist. This is a Gillette-exclusive excitation package that employs a unique winding design and a power capacitor to ensure minimum power variations.
This causes a harmonic disruption of less than 6%, making it applicable to many smaller and more sensitive devices.
6. Generac 6864 Portable Generator
Specifications
| Max power | 5500W |
| Continuous power | 5000W |
| Tank Size | 12 gallons |
| Run Time | 32.4 hours (50% load) |
| Fuel | Diesel |
| Weight | 254 pounds |
General Descriptions
Although it weighs 254 pounds more than portable gas and dual fuel generators, the Generac 6864 shares a frame construction with them. The inbuilt lifting eye may be useful for raising the generator and serving as a point of attachment for the generator’s security.
With a further surge of 500 watts during startup, the engine produces 5000 watts of running power. Although this is a respectable output for a portable generator, you probably won’t be able to operate your entire home on it.
There are four normal 120-volt outlets in addition to two twist-lock plugs, one of which provides 240-volt power, and it has both an electric start and a pull cord. You can keep track of consumption for maintenance needs with the aid of the hour meter on the control panel.
The runtime of this diesel generator is what distinguishes it. It features a sizable 12-gallon gasoline tank that, when used at half load, provides you with power for more than 32 hours. This is far superior to any other generator we’ve evaluated.
Unfortunately, this generator has a few serious drawbacks that can be deal-breakers. First of all, it is really loud. Although Generac doesn’t provide a particular decibel level, it is loud enough that you should wear ear protection whenever you are near it. If you wish to maintain a low profile or if the noise disturbs you at home, this isn’t the best option.
Second, you must purchase the wheel kit and batteries separately since they are not included. The battery is necessary to power the fuel cutoff system; therefore, the generator cannot operate without it. This may be a problem after a disaster when finding the right battery might be challenging.
Finally, even if you are accustomed to starting generators, the recoil starter is challenging to operate. This is not a problem as long as the electric start is functional, but we like to have a reliable backup alternative.
7. AMICO Power AHW6000LE Diesel Welder and Generator
Specifications
| Surge Power | 6000 watts |
| Running Power | 6,500 watts |
| Tank Size | 3.3 gallons |
| Run Time | 12 hours at 50% load |
| Fuel | Diesel |
| Weight | 268 pounds |
General Descriptions
The Amico AHW6000LE is both a generator and a welder; however, if you intend to use it for welding, you should be aware that welding leads are not included.
It is the most potent portable model we have examined as a generator. This makes it a smart alternative for bigger houses or those with energy-hungry appliances like a water heater or air conditioner.
There is a standard selection of AC outlets in addition to a DC outlet, and the 3.3-gallon tank provides a run time of up to 12 hours on a half load. You can track consumption for maintenance purposes with the help of the control panel’s helpful voltmeter and hour meter.
With a rating of 65 dBA at 7 meters, it is the quietest generator we’ve tested. Additionally, although this is all relative, it is one of the lightest! The Amico generator features two wheels and two handles for mobility, in contrast to the four-wheeled variants of the Sigma and DuroStar ones.
One year is the length of the AHW6000LE’s limited warranty. A model with a longer warranty duration may provide you greater peace of mind if you only want to use your generator rarely (for example, just in an emergency).
8. DuroMax XP12000EH
Specifications
| Output | 12,000 watts |
| Engine | 459cc, 4-stroke |
| Fuel type | Gasoline |
| Weight | 270 pounds |
General Descriptions
The DuroMax XP12000EH is an affordable and portable diesel generator that is perfect for camping, tailgating, and other outdoor activities. It has a powerful output of 12,000 watts and a long runtime of up to 12 hours on a single tank of fuel. The generator is also relatively quiet and easy to use.
9. Champion Power Equipment 10000-Watt Portable Generator
Specifications
| Output | 10,000 watts |
| Engine | 420cc, 4-stroke |
| Fuel type | Gasoline |
| Weight | 230 pounds |
General Descriptions
The Champion Power Equipment 10000-Watt Portable Generator is an affordable and portable diesel generator that is perfect for camping, tailgating, and other outdoor activities. It has a powerful output of 10,000 watts and a quiet operation. The generator is also relatively easy to use.
10. Westinghouse WGen7500DF Portable Generator
Specifications
| Output | 7,500 watts |
| Engine | 420cc, 4-stroke |
| Fuel type | Gasoline |
| Weight | 220 pounds |
General Descriptions
The Westinghouse WGen7500DF Portable Generator is a powerful and reliable diesel generator that is perfect for home backup power. It is portable and easy to use, and it has a quiet operation. The generator is also relatively affordable.
11. Caterpillar C32 Diesel Generator Set – Model: CAT C32 ACERT
Specifications
| Surge Power | Not typically specified for industrial generators; focus is on continuous power capacity |
| Running Power | Up to 1,000 kW (Varies based on configuration) |
| Tank Size | Varies based on configuration and external tank setup |
| Run Time | Depends on tank size and load factor; designed for extended operation |
| Fuel | Diesel |
| Weight | Approximately 14,000 lbs (6,350 kg) – varies with configuration |
| Start Type | Electric start |
General Descriptions
The Caterpillar C32 ACERT Diesel Generator Set is a high-performance, heavy-duty generator designed for demanding industrial applications. It is part of Caterpillar’s renowned C32 series, known for its reliability and durability. Equipped with advanced ACERT Technology, this generator set is engineered to deliver consistent power while maintaining emissions compliance. It’s well-suited for environments where robust power generation is critical, such as construction sites, mining operations, and large-scale industrial facilities.
The CAT C32 ACERT is characterized by its large power output capacity and efficiency. It’s built to withstand harsh operating conditions, and its design emphasizes longevity and ease of maintenance. This model also integrates modern control systems, ensuring user-friendly operation and precise power management. Additionally, it offers the flexibility of customization to meet specific operational requirements, making it a versatile choice for various industrial applications.
12. FG Wilson P250-5 Diesel Generator – Model: P250-5
Specifications
| Surge Power | Not typically specified; focus on continuous power |
| Running Power | 250 kVA / 200 kW |
| Tank Size | Varies (external fuel tank setup often used) |
| Run Time | Dependent on tank size and load; designed for extended operation |
| Fuel | Diesel |
| Weight | Approx. 4,150 kg (9,149 lbs) – varies with configuration |
| Start Type | Electric start |
General Descriptions
The FG Wilson P250-5 Diesel Generator is a robust and reliable power solution, designed to meet diverse energy requirements in a range of industries. Known for its durability and efficiency, the P250-5 model is part of FG Wilson’s respected lineup of diesel generators. It is particularly suited for use in sectors like construction, manufacturing, and events, as well as for backup power in commercial buildings and small to medium enterprises. The generator is engineered to deliver high performance with minimal maintenance, ensuring continuous operation even in challenging environments.
Equipped with a Perkins engine, a brand renowned for its engineering excellence, the P250-5 offers a balanced combination of power and efficiency. This generator set is also known for its user-friendly design, featuring an intuitive control panel that simplifies operation and monitoring. The enclosure is designed to reduce noise and protect the components from environmental factors, making it a versatile choice for both indoor and outdoor applications.
Buyer’s Guide & Frequently Asked Questions
Before using a diesel-powered portable generator, you might want to know a little bit more about how these devices perform. You also might want to obtain a better understanding of how these instruments compare.
While everyone has their favorite, we know that not every device is appropriate for every need. To help you find the best generator for your application, you may want to notice the following questions.
Which Diesel Generator Do You Recommend for Home Use, As A Backup Power Source?
- Our recommendation for a diesel backup energy supply is the DuroStar DS7000Q. It can provide a good amount of energy, the outlets you require, and the best overall amount.
- The pricier Generac 6864 is a better option for people who require a long operation time. If your energy loss lasts for a while, it can get frustrating immediately to keep refilling the fuel source. The Generac can be used for more than 24 hours at 50% load. If you are looking at an energy loss of several days, the Generac is likely the smarter option.
Which Oil to Use in A Diesel Generator?
You must often use the oil recommended in the device’s manual. For Generac 6864, for instance, the recommended oil is SAE 10W-30. This oil is likely a safe bet for all diesel instruments, but you should definitely control the information to make sure. As the Pulsar manual indicates, the best oil type should account for the air temperature of the current ambient.
For colder temperatures, you’ll need to use a liquid with a lower viscosity such as 5W-20. You’ll want to utilize an oil with a greater viscosity such as SAE 40 for hot temperatures.
Regardless of which oil form you employ, you must follow all the oil-related maintenance information as presented in the manual for your device. Typically, this contains checking the oil regularly, commonly before every start.
You’ll also have to change the oil completely after so many hours of use. Some of the devices on this list have an indicator on the control panel that warns you when you require to do this.
Does a Diesel Generator produce AC or DC?
A diesel engine turns a generator, creating AC electricity. Electrical appliances are powered by this electricity. They can serve a range of applications, such as schools, hospitals, factories, and homes. Depending on your needs, they can be used either as the primary source of power or in the event of an outage.
Conclusion
Diesel generators can be great instruments to have on hand, particularly for use as a home backup in a power loss condition. Have you ever employed a fuel-efficient diesel-powered device? What did you think? Which one of these types do you have your eye on? Feel free to ask any questions you might have about generators. Let us know in the comments.
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