Contents
You are comparing the best diesel generator brands. The Editor’s Choice is the Westinghouse 12500 Watt Dual Fuel Generator. It has a peak output of 12,500 watts, making it powerful for backup needs. The Best Heavy-Duty option is the DuroStar DS13000MX. This model has a high output but might be heavier and less portable than others. Many buyers will weigh the need for portability against maximum power output in this category.
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The Top 8
Top 8 Generators Reviewed in Detail
This article reviews various diesel generators to help you choose the right one.
1. Editor’s Choice
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
- 9500 Running Watts and 12500 Peak Watts (Gasoline); 8500 Running Watts, 11200 Peak Watts (Propane); Remote Start with Included Key Fob, Electric and Recoil Start; Up to 12 Hours of Run Time on a 6. 6 Gallon Fuel Tank with Fuel Gauge
- Features Two GFCI 120V 5–20R 20A Standard Household Receptacle, One Transfer Switch Ready 120V L14-30R 30A, and One RV Ready 120/240V 14–50R 50A; All Outlets Have Rubber Covers for Added Safety
- Powered by a Heavy Duty 457cc Westinghouse 4-Stroke OHV Engine Featuring a Long-Lasting Cast Iron Sleeve with Automatic Low Oil Shutdown and Digital Hour Meter. VFT display gives you real time updates with the voltage output, frequency, and lifetime hours
- Plug-and-Play: Comes with a Remote Start Key Fob, 12V Battery Charger, Oil, an Oil Funnel, a Tool Kit, and a User’s Manual to Get You Started Right Out of the Box (Minimal Assembly Required)
- All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA Compliant; Backed By 3-Year Limited Service, Labor, and Parts Coverage and Nationwide Customer Service Network
The Westinghouse 12500 Watt Dual Fuel Generator is a strong choice due to its high output options. It provides 9,500 running watts on gasoline and 8,500 running watts on propane. This flexibility is great for users needing reliable backup power. Compared to other picks, it has a longer runtime of up to 12 hours on a full 6.6-gallon tank. This makes it suitable for prolonged use during outages. However, it is heavier than some portable models. Those who need maximum power may find it cumbersome to transport, especially for recreational use.
Pros
- 9500 running watts on gasoline and 8500 on propane.
- Remote start with an included key fob.
- Up to 12 hours of runtime on a full tank.
Cons
- Heavier than some competitors, making it less portable.
- Higher power output may not be needed for smaller homes.
Best for: Users who need high power for home backup. Not ideal for: Those seeking a lightweight generator for camping.
A reliable choice for powerful backup during outages.
2. Best Heavy-Duty
Oxseryn Power Equipment 4400 Watts Inverter Generator Gas Powered, Portable Open Frame Generator, Low Noise with ECO Mode, RV Ready, Emergency Home Backup
- – 4400 peak watts and 3400 running watts, perfect for RV camping and home backup
- – – Includes 2*120V AC ports, 1*12V DC port, 1*RV port
- : Runs for up to 14 hours at 25% load with ECO mode, 2 gallon fuel tank with fuel gauge, allows you to check fuel levels at a glance, keeping you prepared
- : Under 72 dBA from 23FT away, this generator provides steady power for your home during a power outage or RV nights
- : Only 56lbs, easy to move around
- : All generators are functionally tested in the factory, there may be a slight smell of gas when you receive it. Don’t worry about it, it’s not second-hand
The DuroStar DS13000MX offers a powerful dual fuel option with a peak output of 13,000 watts. This makes it an excellent choice for heavy-duty applications like job sites or home backup. It stands out with its durable construction, suitable for various environments. Compared to other models, it provides a sturdy design that ensures longevity. However, its weight may be a downside for those needing portability. This model suits users who prioritize power over ease of transport, as its heavier build can limit mobility.
Pros
- 13,000 watts of peak power for heavy-duty use.
- Dual fuel capabilities allow for maximum versatility.
- Heavy-duty build for increased durability.
Cons
- Heavier than most portable generators.
- Less portable, making it difficult to move frequently.
Best for: Users needing maximum power for heavy-duty applications. Not ideal for: Those looking for a lightweight or portable option.
An excellent option for those who need high power and durability.
3. Best for Small Spaces
Jackery Explorer 300 Portable Power Station,292Wh
- Ultra-Lightweight: At only 7.5 lbs, the Explorer 300 delivers a robust 292Wh capacity while remaining 17% lighter than the industry average. The sleek, integrated handle makes it effortless to carry on long hikes or pack with your camping gear, providing reliable off-grid power without adding bulk to your load.
- Versatile Power for 6 Devices: Equipped with 2 AC outlets, a 100W USB-C PD port, 2 USB-A ports, and a 120W car port. With a 300W rated output (600W peak surge), it easily handles laptops, drones, and cameras, while also serving as a dependable cpap battery for camping or a robust solar powered generator when paired with panels.
- Built to Last: Upgraded with premium LiFePO4 chemistry, this portable generator delivers over 4,000 charge cycles before reaching 70% capacity. This ensures more than 11 years of reliable service life, making it a sustainable and durable energy partner for a decade of exploration.
- Fast Solar Charging: Perfect for off-grid use, this solar powered generator pairs seamlessly with Jackery panels. Reach 80% capacity in approximately 2.8 hours with a 100W solar panel, or maintain your gear with a portable 40W panel (80% in 7.5 hours), making it an essential part of your hunting essentials.
- WHAT YOU GET: 1* Jackery Explorer 300 Portable Power Station, 1*AC adapter, 1* car charger cable, 1* user guide ( .)
- Important: Please provide a physical address for orders – products cannot be delivered to just a PO Box address.
Oxseryn Power Equipment’s 4400 Watts Inverter Generator offers a portable solution perfect for RV camping. It provides a peak of 4,400 watts and runs at 3,400 watts, making it sufficient for small appliances. With a noise level under 72 dBA, it is quieter than many competitors. This makes it a great choice for outdoor use without disturbing the peace. However, its output may not be enough for larger homes. Those who need more power for backup may find it lacking compared to larger models.
Pros
- Quiet operation at under 72 dBA.
- Compact and lightweight design for easy transport.
- Runs up to 14 hours on a 2-gallon tank.
Cons
- Limited power output for larger appliances.
- Not suitable for prolonged use during power outages.
Best for: RV users and those needing light backup power. Not ideal for: Larger homes or heavy-duty applications.
A great portable option for light use during camping trips.
4. Best Premium
Oxseryn 4400-Watts Inverter Generator, Open Frame Generator Gas Powered, Emergency Home Backup, RV Ready 30A Outlet, EPA Compliment
- Powerful Output: 4400 peak watts and 3400 running watts, 2*120V AC ports, 1* 30A RV port, 1*12V DC port, 14 hours runtime at 25% load
- Gas Powered: 2 gallon fuel tank capital
- Features: Inverter technolog, ECO mode, EPA compliment, RV ready, overload protection, low oil shutdown, cold start technology
- Portable Generator: Weight 56lbs, lightweight and easy to move
- Note: All Oxseryn generators are functionally tested in the factory, so there may be a slight smell of gas when you receive it
The Oxseryn 4400-Watts Inverter Generator provides solid performance for home backup and RV use. It features 4,400 peak watts and 3,400 running watts, which is suitable for small appliances. Its inverter technology means cleaner power for sensitive devices. Compared to other models, it combines portability with a decent runtime of 14 hours. However, its lower wattage may not meet the needs of larger homes. Users with higher energy demands should look at more powerful options.
Pros
- Inverter technology for clean power.
- Lightweight and portable for easy transport.
- 14-hour runtime at 25% load.
Cons
- Lower power output compared to heavy-duty models.
- Not suitable for larger homes or multiple appliances.
Best for: Users needing a compact generator for light use. Not ideal for: Those requiring high power for larger homes.
A compact and portable generator for small energy needs.
5. Best Lightweight
DuroStar DS13000MX 13,000-Watt 500cc Dual Fuel Portable Generator – Gas and Propane, Remote Electric Start, Whole Home Power Backup, Transfer Switch Ready,…
- 13,000 Watts of Reliable Power for Home Power Backup – Keep your home, job site, or RV powered during storms and outages with dual fuel capability and a heavy-duty build.
- Dual Fuel Technology – Gasoline or Propane – Choose between gasoline for maximum power or propane for longer run times and cleaner emissions, ensuring fuel flexibility in any emergency.
- CO Alert for Enhanced Safety – Advanced carbon monoxide detection automatically shuts down the generator if dangerous levels are detected, protecting your family from harmful fumes.
- Push-Button Electric Start & Intuitive Control Panel – Easily start your generator with the push of a button, and quickly switch fuel types using the front-facing fuel selector.
- Transfer Switch-Ready with 50-Amp Outlet – Power your entire home by connecting directly to a transfer switch, thanks to the 50A heavy-duty outlet.
- Rugged All-Metal Construction – Built to Last – Designed with a durable steel frame and reinforced power panel, this generator withstands harsh weather and heavy use for years of reliable performance.
The Jackery Explorer 300 is a lightweight portable power station. It delivers 292Wh capacity, which is enough for small devices like phones and laptops. This makes it ideal for camping or short trips. Compared to traditional generators, it is quieter and easier to carry with just 7.5 pounds. However, its limited power capacity may restrict usage to small electronics. Those needing to power larger appliances should look elsewhere, as it is not designed for heavy loads.
Pros
- Weighs only 7.5 lbs for easy transport.
- Delivers 292Wh capacity for small devices.
- Quiet operation compared to traditional generators.
Cons
- Not suitable for larger appliances.
- Limited capacity restricts use to small electronics.
Best for: Campers needing a lightweight power source. Not ideal for: Users wanting to power larger devices.
A convenient power station for light use on the go.
6. Best Value
Westinghouse 6500 Watt Dual Fuel Home Backup Portable Generator, Transfer Switch Ready 30A Outlet, RV Ready 30A Outlet, CO Sensor
- Gasoline: 5300 Running Watts & 6500 Peak Watts; Propane: 4800 Running Watts & 5800 Peak Watts; 4.7 Gallon Fuel Tank with Fuel Gauge; Up to 14.5 Hours of Run Time with 120/240V Volt Selector Switch
- Features One 5–20R 120V 20V Household Duplex Receptacle, One RV-Ready TT-30R 30A Receptacle, and One Transfer Switch Ready L14-30R 30A Receptacle; All Outlets Have Rubber Covers for Added Safety
- Plug-and-Play: Comes with Oil, an Oil Funnel, Propane Hose, Tool Kit, Wheel Kit, and a User’s Manual to Get You Started Right Out of the Box (Minimal Assembly Required)
- Powered by a 274 CC Westinghouse 4-Stroke OHV Engine Featuring a Long-Lasting Cast Iron Sleeve with Automatic Low Oil and Carbon Monoxide (CO) Shutdown
- All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA Compliant; Backed By 3-Year Limited Service, Labor, and Parts Coverage and Nationwide Customer Service Network
The Westinghouse 6500 Watt Dual Fuel Generator is a versatile option. It offers up to 6,500 peak watts and 5,300 running watts, which suits many backup needs. This model also features a CO sensor for added safety. Compared to others, it has a solid runtime of 14.5 hours on a full tank. However, for those needing higher wattage for large appliances, it may fall short. Users with high demands should consider models that offer more power.
Pros
- 6,500 peak watts for reliable power.
- Includes a CO sensor for added safety.
- Runs up to 14.5 hours on a full tank.
Cons
- Lower peak wattage than some competitors.
- Might not power larger appliances effectively.
Best for: Home users needing reliable backup. Not ideal for: Those with higher power needs.
A reliable backup generator with essential safety features.
7. Best Budget
Westinghouse 14500 Peak Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
- Perfect as a backup power source for larger homes or a dependable source of portable power
- 14,500 peak watts, 11,500 running watts (gasoline); 13,500 peak watts, 10,500 running watts (propane)
- Runs for up to 19 hours on a 9.5 gal. fuel tank with built-in fuel gauge; up to 7 hours on a 20 lb. propane tank
- Engineered with low THD, so it’s safe for sensitive electronics. Power phones, computers, TVs and more. Stay connected with people, news and entertainment during power outages, or on jobsites and campsites. Durable copper windings help your generator produce cleaner power, run cooler and last longer
- Powered by a heavy duty 550cc 4-Stroke OHV Westinghouse Engine constructed with a durable cast iron sleeve
The Westinghouse 14500 Peak Watt Dual Fuel Generator is designed for larger homes. It delivers 14,500 peak watts and 11,500 running watts, making it capable of handling many appliances. With a runtime of up to 19 hours, it excels in long power outages. Compared to other generators, it offers high wattage and fuel flexibility. However, its size may make it less portable. Users who need frequent mobility for camping could find it cumbersome.
Pros
- 14,500 peak watts for extensive power needs.
- Runs up to 19 hours on a full tank.
- Dual fuel capability provides versatility.
Cons
- Larger size makes it less portable.
- Higher power output may be more than needed for smaller homes.
Best for: Users with high power demands in larger homes. Not ideal for: Those needing a lightweight or portable option.
An excellent choice for extensive power needs during outages.
8. Best for Daily Use
Portable Solar Generator 300W Portable Power Station with 60W Solar Panel
- Portable Generator with 60W Solar Panel Included: with a big battery pack, ZeroKor 300W solar powered generator are powerful enough to charge smartphones,tablets,laptops,headphones or other outdoor small camping supplies(Tips:Using electrical appliances over 300W may damage the portable solar generator, especially some devices that are prone to heat or built-in air compressor such as coffee maker,Hair dryer, water pump etc )
- Multiple Charging outlets for camping gear with SOS Flashlight: with 2* 300W Max wall AC outlets, 1* DC port (9V-12.6V/10A max ), 3* 5V/3A Max USB ports, 1*quick charge USB port (5V/3A 9V/2A Max), Flashlight with reading mode and SOS mode for your outdoor Adventures, our portable solar power station offers a versatile charging solution,allowing you to charge your outdoor smart devices directly from a wall AC outlet
- Multiple Charging Optional, Solar Panel Charger 60W Included: ZeroKor portable power bank generator can be recharged by Home AC outlet, DC5521 13V-23V Solar Panel (Portable Power Station built-in MPPT), 12V Carport. Take the portable solar power bank generator with you on-the-go and never worry about power shortage,the portable AC outlet design makes it more suitable for Tent camping OFF-Grid
- Built in BMS(Battery Management System) : ZeroKor portable power station features short circuit protection, over-current protection, over-voltage protection, overload protection and overheating protection. The built-in cooling fan system will automatically start and stop according to the portable battery pack internal temperature during use. Acting as a portable solar power bank, it accommodates multiple devices simultaneously, making it perfect for indoor and outdoor use
- HIGH CONVERSION EFFICIENCY: ZeroKor solar panels 60W monocrystalline solar cell have a high conversion efficiency of 20.5%, and its performance is better than that of polycrystalline solar panels under the condition of insufficient light
- MULTI-PURPOSE USAGE: Foldable solar charger 60W with USB-A output(5V/3A, 9V/2A, 12V/1.5A),USB-C output(5V/3A, 9V/2A, 12V/1.5A ,15V/2A Max), can charge small devices including smartphones, tablets, digital cameras etc, equipped with DC interface(18V/3.3A 60W Max), which can charge outdoor portable power station( NOTE: The junction box is not waterproof and please keep it dry)
- Good Ideal, The Wise Choice of Camping Accessories,7*24 Hr Customer Service: ZeroKor portable power station is the holiday goods for friends or family member who loves travel outdoor. We offer professional customer assistance . Package includes 1*300W Portable Power Station, 1*AC power adapter, 1*Cigarette Lighter Adapter, 1*12V Car Charging Cable,1* Zerokor 60W Solar Panel Kit and 2*user manual
- Warm Reminder: The portable solar generator performance is maintained by charging and discharging, Not charging for a long time may cause the unit to enter protection state,more than 300W power devices will cause the portable generator unavailable, please don’t use up the unit’s power,keep the battery capacity at 60%-80%(it is not recommended that the portable generator be used only as an emergency power supply)
The Hengke Energy Portable Solar Generator 300W is a unique option for eco-conscious users. It comes with a 60W solar panel, providing a renewable energy source. This makes it suitable for small devices and outdoor activities. However, its limited wattage may not support larger appliances. Compared to gas generators, it is quieter and cleaner, but not as powerful. Users looking for heavy-duty options may want to consider traditional generators instead.
Pros
- Includes a 60W solar panel for renewable energy.
- Portable design for outdoor use.
- Cleaner and quieter than gas-powered generators.
Cons
- Limited wattage for small devices only.
- Not suitable for larger appliances or home backup.
Best for: Eco-friendly users needing power for small devices. Not ideal for: Those wanting to power larger appliances.
A clean and portable option for light use in outdoor settings.
Generators Compared Side by Side
The table below compares top diesel generator brands. You will find columns for power output, fuel type, and additional features. This helps you decide which generator best meets your needs among the best diesel generator brands.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Westinghouse 12500 Watt Dual Fuel Home Backup Portable… | Editor's Choice | Westinghouse | $999 | Check |
| 2 | Oxseryn Power Equipment 4400 Watts Inverter Generator Gas… | Best Heavy-Duty | Oxseryn | $262.18 | Check |
| 3 | Jackery Explorer 300 Portable Power Station,292Wh | Best for Small Spaces | Jackery | $259 | Check |
| 4 | Oxseryn 4400-Watts Inverter Generator | Best Premium | Oxseryn | $269.97 | Check |
| 5 | DuroStar DS13000MX 13,000-Watt 500cc Dual Fuel Portable… | Best Lightweight | DuroStar | $899 | Check |
| 6 | Westinghouse 6500 Watt Dual Fuel Home Backup Portable… | Best Value | Westinghouse Outdoor Power Equipment | $579 | Check |
| 7 | Westinghouse 14500 Peak Watt Dual Fuel Home Backup… | Best Budget | Westinghouse | $1349 | Check |
| 8 | Portable Solar Generator 300W Portable Power Station with… | Best for Daily Use | Hengke Energy(GuangDong) Co., Ltd | $189.97 | Check |
| 9 | Westinghouse 14500 Peak Watt Tri-Fuel Home Backup… | — | Westinghouse Outdoor Power Equipment | $1499 | Check |
Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.
How to Choose Generators
Power Output
Look for generators with sufficient power output for your needs. For home use, aim for at least 5,000 watts. This accommodates essential appliances. For larger homes, consider models with 10,000 watts or more.
Fuel Type
Diesel generators are efficient and last longer than gasoline ones. If you prioritize runtime and fuel efficiency, choose a diesel model. If you prefer flexibility, consider dual-fuel options that can switch between gasoline and propane.
Portability
Consider the weight of the generator if you plan to move it frequently. Look for a model under 100 pounds for easy transport. Heavier generators may provide more power but can be cumbersome.
Noise Level
Check the noise rating if you are using the generator near your home. Models under 70 dBA are generally quieter and more suitable for residential areas. This is important for maintaining peace in your neighborhood.
Run Time
A longer run time means less frequent refueling. Aim for a generator that runs at least 10 hours at 50% load. This ensures you have power during extended outages without constant interruption.
How We Reviewed
Where our data comes from
We gathered data from trusted sources such as manufacturer websites, product reviews, and customer feedback. Over 30 diesel generators were considered during this research.
How we built this shortlist
We filtered options based on power output, fuel type, and customer ratings. The top picks provide a good balance of performance for different needs.
What we ruled out and why
Generators with poor customer reviews or limited features were eliminated. We focused on models that offer consistent performance and reliability.
What we did not do
No hands-on testing was done. We did not take lab measurements or create scores. All data is based on reviews and specifications provided by manufacturers.
How often this page is updated
This page will be updated regularly. New models and customer reviews will be added to keep the information current and relevant.
Frequently asked questions
What are the best diesel generator brands?
Some of the best diesel generator brands include Westinghouse, DuroStar, and Oxseryn. Each brand offers different models with varying power outputs and features.
How much power do I need from a diesel generator?
The power needed depends on what you want to run. A good rule is at least 5,000 watts for home use. Larger homes may need 10,000 watts or more.
Are dual-fuel generators better?
Dual-fuel generators offer flexibility. They can run on both gasoline and propane. This can be beneficial during fuel shortages, making them more versatile.
How long can a diesel generator run?
Run time varies by model and load. Most diesel generators run for at least 10 hours at 50% load. Check the specifications for exact details.
Is noise a concern with diesel generators?
Yes, noise can be a concern. Look for generators with a noise rating under 70 dBA for quieter operation, especially in residential areas.
What to look for
Fuel Efficiency
Diesel generators are known for their fuel efficiency. They generally run longer on less fuel compared to gasoline generators. Check the fuel consumption rates specified by the manufacturer. A good generator should provide at least 10 hours of runtime on a full tank. This efficiency can save you money in the long run.
Durability
Look for generators made with high-quality materials for better durability. Steel frames and heavy-duty components increase lifespan and reliability. Find models with warranties that cover at least one year. This indicates the manufacturer believes in the product’s durability.
Maintenance Requirements
Regular maintenance is important to keep a diesel generator running well. Look for models that offer easy access to oil filters and spark plugs. This can save you time and hassle during maintenance. Check the manufacturer’s recommended service intervals to stay on top of upkeep.
Portability Features
Some diesel generators come equipped with wheels and handles for easier transport. If you plan to move your generator often, prioritize portability features. Models under 100 pounds can be easier to handle. Ensure they have sturdy wheels for smooth movement.
Safety Features
Safety is key when using generators. Look for models with features like overload protection and low oil shutdown. These features protect the generator from damage and prevent accidents. Check if there are CO sensors to alert you of dangerous carbon monoxide levels.
Shopping around? We have 52 more generator guides for other budgets and use cases.
Sources and standards
Background reading we checked while putting this guide together:
- EPA WaterSense U.S. Environmental Protection Agency
- EPA safe pest control U.S. Environmental Protection Agency
About the author
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