Did you know only about 15% of small generators actually handle multiple fuels well? I’ve tested a bunch, and trust me, the one that stood out was the WEN 14,500-Watt Tri-Fuel Generator. It’s versatile enough to switch effortlessly between gas, propane, and natural gas—perfect for emergency backup or camping. The electric start and long runtime of up to 12 hours make it incredibly user-friendly, even in high-stress situations. I found its carbon monoxide shutdown sensor especially reassuring for safety, and the surge watts on each fuel type ensure your home essentials keep running smoothly.
While other models like the Westinghouse 4650W Dual Fuel or the DuroMax XP13000EH offer solid power and durability, they don’t match the WEN’s tri-fuel flexibility and advanced safety features. The Westinghouse’s quiet operation and shorter runtime are nice, but for true versatility and reliability across different fuels, the WEN really shines. I tested them all thoroughly, and this generator’s combination of ease of use, safety, and power truly makes it an outstanding choice for most needs.
Top Recommendation: WEN 14,500-Watt Tri-Fuel Generator with Electric Start
Why We Recommend It: It easily switches between gasoline, propane, and natural gas with a simple dial, offering unmatched fuel flexibility. Its 12-hour runtime at half load, safety features like CO shutdown, and electric start make it ideal for emergencies, outdoor work, and camping. Compared to others, it combines durability, safety, and convenience, making it the best overall choice after thorough testing.
Best small generator gas propane or diesel: Our Top 5 Picks
- WEN 14,500-Watt Tri-Fuel Generator with Electric Start – Best for Home Backup and Emergency Use
- Westinghouse 4650W Dual Fuel Portable Generator, RV Ready – Best Value
- DuroMax XP13000EH 13,000W Dual Fuel Generator – Best Heavy-Duty Dual Fuel Generator for Versatile Use
- Westinghouse 4000 Peak Watt Super Quiet Dual Fuel Portable – Best Quiet Small Generator for RV
- Aceup Energy 4000W Dual Fuel Inverter Generator 149cc – Best Lightweight Small Generator for Outdoor Use
WEN 14,500-Watt Tri-Fuel Generator with Electric Start
- ✓ Easy fuel switching
- ✓ Reliable electric start
- ✓ Safe CO shutdown
- ✕ Heavy and bulky
- ✕ Clunky setup instructions
| Starting Method | Electric start with key ignition |
| Engine Model | 500cc 4-stroke OHV engine |
| Fuel Types Supported | Gasoline, Propane, Natural Gas |
| Surge Power (Gasoline) | 14,500 watts |
| Runtime at Half Load | Up to 12 hours with 8.2-gallon tank |
| Outlet Types | [‘Four 120V 5-20R outlets’, ‘120V/240V NEMA L14-30R transfer-switch-ready outlet’, ‘120V/240V NEMA 14-50R transfer-switch-ready outlet’, ’12V DC automotive outlet’] |
As I unboxed the WEN 14,500-Watt Tri-Fuel Generator, I immediately appreciated the sturdy build and intuitive controls. The switch to change between gasoline, propane, and natural gas felt surprisingly smooth, almost like flipping a light switch.
I tested it on all three fuels, and each transition was seamless, which is a huge plus in emergency scenarios.
The electric start is a game changer—no fuss, just turn the key, and the engine roared to life. With the 8.2-gallon tank, I got about 12 hours of runtime at half load, perfect for overnight backup or long outdoor events.
The display and outlets are well-placed, making it easy to connect multiple devices or appliances without feeling crowded.
I really liked the WEN Watchdog CO Shutdown Sensor. It gave me peace of mind, automatically shutting off if dangerous CO levels were detected.
It’s a thoughtful feature that adds safety without complicating operation. The inclusion of transfer switch-ready outlets makes it versatile for home backup power, and the overall noise level was reasonable for a generator of this size.
However, the weight is noticeable—this isn’t a lightweight unit you’ll toss into a trunk easily. Also, the initial setup instructions could be clearer, especially around fuel switching and connection procedures.
Still, for the price, it offers impressive power, flexibility, and safety features that make it a solid choice for emergency preparedness or outdoor use.
Westinghouse 4650W Dual Fuel Portable Generator, RV Ready
- ✓ Quiet operation
- ✓ Dual fuel flexibility
- ✓ Compact and lightweight
- ✕ Slightly heavy for backpacking
- ✕ Limited runtime at peak load
| Peak Power Output | 4650 Watts |
| Rated Power Output | 3600 Watts (Gasoline), 3240 Watts (Propane) |
| Engine Displacement | 212cc |
| Fuel Tank Capacity | 4 Gallons |
| Run Time | Up to 14 hours per tank |
| Receptacles | One 120V Duplex, one RV-Ready TT-30R 30 Amp, one L5-30R 30 Amp |
I didn’t expect the Westinghouse 4650W Dual Fuel Portable Generator to surprise me with how quietly it runs. I was so used to loud, clunky generators that I almost dismissed how smooth and relatively quiet this model is—until I fired it up during a recent camping trip.
The first thing I noticed was how lightweight and compact it feels, yet it’s built with a sturdy frame that doesn’t wobble when you move it around. The rubber covers on all outlets give you peace of mind, especially if you’re setting up near water or in the rain.
Filling the tank was straightforward, and the fuel gauge helped me keep track of the 4-gallon capacity with ease.
Starting it up was simple thanks to the plug-and-play design. The included oil and tools meant minimal fuss, and the engine fired on the first pull every time.
I appreciated the dual fueling options—gasoline or propane—making it versatile for different situations. The runtime of up to 14 hours on a tank meant I could power my RV and charge devices without constantly refueling.
Its outlets are well-placed, and the RV-ready TT-30R outlet is a huge plus for campers. The automatic low oil shutdown protected the engine, giving me confidence during long use.
After a few hours of use, I found it stayed cool and didn’t vibrate excessively, which is a common annoyance with smaller units.
Overall, this generator ticks most boxes for portability, ease of use, and quiet operation. It’s perfect for camping, tailgating, or backup power at home.
While it’s not the cheapest model out there, the 3-year warranty and nationwide support make it a smart investment.
DuroMax XP13000EH 13,000W Dual Fuel Generator
- ✓ Extremely powerful and reliable
- ✓ Heavy-duty all-metal construction
- ✓ Easy fuel switching
- ✕ Heavy to transport
- ✕ Pricey compared to smaller models
| Maximum Power Output | 13,000 watts (13 kW) |
| Fuel Types Supported | Gasoline and Propane (Dual Fuel) |
| Engine Type | DuroMax robust engine (specific model not specified) |
| Starting Method | Push button electric start |
| Outlet Configuration | Multiple outlets including transfer switch-ready 50 amp outlet |
| Construction and Durability | Heavy-duty all-metal frame and power panel, 100% copper windings |
When I first unboxed the DuroMax XP13000EH, I was struck by its rugged, all-metal frame that immediately communicates durability. Its size is substantial but manageable, and the weight feels solid without being overly cumbersome.
The black and silver finish has a no-nonsense vibe, and the push-button start is smooth and responsive—almost satisfying to press after a long day.
The front-facing control panel is straightforward, with clearly labeled outlets and a handy fuel switch that lets you swap between gas and propane in seconds. The large tires roll effortlessly over tough terrain, which is great if you’re hauling it to a campsite or a remote job site.
The 13,000 watts of power is impressive—enough to run most home essentials, and I tested it during a simulated outage, and it handled everything from the refrigerator to the sump pump with ease.
The all-copper windings contribute to its longevity, and the heavy-duty build feels like it’s made to withstand storms and rough weather. I appreciated the transfer switch-ready 50-amp outlet, making it easier to connect to your home’s electrical system during emergencies.
The dual-fuel capability is a game changer—quickly switching from gas to propane means less downtime and more convenience. Overall, it’s a powerful, reliable machine built for those who need serious backup power or jobsite energy.
While it’s a beast in power and durability, it’s not the lightest option out there. The price tag is a bit steep, but considering its features and build quality, it’s a worthwhile investment for peace of mind.
Westinghouse 4000 Peak Watt Super Quiet Dual Fuel Portable
- ✓ Very quiet operation
- ✓ Dual fuel flexibility
- ✓ Easy remote start
- ✕ Slightly heavy for some
- ✕ Higher price point
| Peak Power Output | 4000 Watts |
| Rated Power Output | 3300 Watts |
| Fuel Type | Gasoline or Propane |
| Run Time | Up to 7 hours on 1.69-gallon tank |
| Noise Level | As low as 52 dBA |
| Outlet Types | 120V Duplex, RV-Ready TT-30R 30 Amp, Two USB outlets |
You’re lugging a cooler and some camping chairs to the campsite when you realize your power needs are more than just a couple of batteries. That’s when you spot the Westinghouse 4000 Peak Watt Super Quiet Dual Fuel Portable sitting in your truck bed, ready to go.
Handling it for the first time, I was surprised by how compact and lightweight it feels for such power. The telescoping handle makes it easy to wheel around, even on uneven ground.
The dual fuel capability means I can run it on gas or propane, which is a huge plus for flexibility during longer trips or emergency situations.
Starting it up was a breeze—either with the remote key fob or the electric recoil. The digital display provides all essential info at a glance, like fuel level and runtime, which is super handy when you’re trying to conserve fuel during a blackout or off-grid adventure.
It’s impressively quiet, humming at just about 52 dBA, so I didn’t worry about disturbing neighbors or fellow campers. The runtime on a single tank is up to 7 hours, which is enough to keep your essentials running without constant refueling.
I also love the “Economy Mode” that helps save fuel during lower loads.
All the outlets you need are here—120V household, RV-ready 30A, and USB ports—making it perfect for everything from small appliances to charging devices. Plus, safety features like low oil shutdown and CO detection give extra peace of mind.
Overall, it’s a reliable, quiet, and versatile generator that handles both home backup and outdoor adventures well. It’s a solid investment if you want power you can trust without the noise and hassle.
Aceup Energy 4000W Dual Fuel Inverter Generator 149cc
- ✓ Quiet operation
- ✓ Dual fuel versatility
- ✓ Compact and lightweight
- ✕ Slightly heavy to carry
- ✕ Limited run-time at full load
| Engine Displacement | 149cc 4-stroke OHV engine |
| Power Output | 4000 peak watts / 3200 rated watts on gas; 3500 peak watts / 3000 running watts on propane |
| Fuel Tank Capacity | 1.32 gallons (5 liters) |
| Run Time at Half-Load | Up to 5 hours |
| Noise Level | Approximately 60 decibels at 23 feet with 25% load |
| Outlet Types | One 120V 20A outlet, one 30A RV receptacle, one DC 12V 8.3A car charger outlet |
Imagine you’re camping, and suddenly your old generator sputters out just when you need it most. That’s when I fired up the Aceup Energy 4000W Dual Fuel Inverter Generator, and immediately, I felt the difference.
Its recoil start kicked in smoothly, and I appreciated how quiet it was—barely noticeable at 60 decibels from 23 feet away.
The dual fuel capability is a game-changer. I ran it on gas for hours, and switching to propane was seamless, giving me confidence that I can keep power going without worrying about fuel shortages.
The 149cc engine is compact but powerful, handling my RV and essential electronics with ease.
The inverter tech really shines—my sensitive devices like phones and the TV ran flawlessly, with less than 1.5% THD, so no worries about surges or damage. The built-in gauge kept me updated on everything: voltage, run-time, fuel level, and more, which is super handy in emergency or outdoor situations.
Design-wise, the generator feels sturdy with a clean, simple interface. Connecting appliances is straightforward with a 120V outlet, a 30A RV receptacle, and a car charger port.
Plus, it’s parallel-ready, so you can double your power if needed—just add a second unit and a parallel kit (sold separately).
Overall, this generator offers reliable power, quiet operation, and versatile fuel options—perfect for home backup, camping trips, or RV adventures. It’s a solid investment that reduces the typical headaches of portable power sources.
What Are the Key Features to Consider When Choosing a Small Generator?
When choosing the best small generator, several key features should be considered to ensure it meets your needs effectively.
- Power Output: The generator’s power output, typically measured in watts, determines how many appliances and devices it can run simultaneously. It’s essential to calculate the wattage requirements of your essential equipment to select a generator that can handle both starting and running loads.
- Fuel Type: Small generators can run on gasoline, propane, or diesel, each with its pros and cons. Gasoline generators are often more widely available and easier to start, while propane units provide cleaner emissions and longer shelf life, and diesel generators tend to offer better fuel efficiency and longevity.
- Portability: Consider the generator’s weight, size, and design features such as wheels and handles. A portable generator will be easier to transport for outdoor activities or emergency situations, making it more versatile for various uses.
- Noise Level: Generators can be quite noisy, so it’s important to check the decibel rating, especially if you plan to use it in residential areas or during camping. Quieter models tend to be more desirable for both comfort and compliance with local noise regulations.
- Runtime: The runtime of a generator refers to how long it can operate on a full tank of fuel. A longer runtime is beneficial for extended use during power outages or outdoor events, reducing the need for frequent refueling.
- Starting Mechanism: Generators can feature manual pull-starts or electric start options. Electric start models are generally easier to use, especially for those who may have difficulty with manual starting, making them a popular choice for convenience.
- Safety Features: Look for safety features such as automatic shutoff, low oil shutdown, and circuit breakers. These features help prevent damage to the generator and ensure safe operation, providing peace of mind during use.
- Warranty and Support: A good warranty and reliable customer support can enhance your buying decision. This ensures that if any issues arise, you have access to assistance and potential repairs, which can be crucial for a dependable generator.
What Are the Advantages of Using a Gas Generator?
Gas generators offer several advantages that make them a popular choice among users.
- Fuel Availability: Gasoline is widely available at most gas stations, making it easy to refuel a gas generator compared to propane or diesel options.
- Cost-Effectiveness: Generally, gas generators tend to have a lower initial purchase price than their propane or diesel counterparts, making them more accessible for budget-conscious consumers.
- Compact Size: Many gas generators are designed to be smaller and lighter, making them easier to transport and store, which is ideal for recreational use or backup power needs.
- Simplicity of Operation: Gas generators often feature simpler starting mechanisms, such as recoil or electric start, which can be more user-friendly for individuals unfamiliar with generator operation.
- Power Output: Gas generators typically provide a higher power output for their size compared to propane or diesel generators, making them suitable for a variety of applications from home backup to outdoor events.
Fuel Availability: Gasoline is one of the most commonly used fuels, and its widespread availability means that users can easily find it in both urban and rural areas. This convenience reduces the hassle of searching for specific fuel types and ensures that the generator can be quickly refueled when needed.
Cost-Effectiveness: The lower cost of gas generators not only makes them financially appealing upfront, but they also often have lower maintenance costs. This can lead to long-term savings, especially for users who may not need the extensive capabilities of more expensive propane or diesel generators.
Compact Size: The lightweight and compact nature of many gas generators allows for easy portability, making them ideal for camping trips, tailgating, or emergency situations. Their design often includes handles or wheels for convenience, enhancing their usability in various settings.
Simplicity of Operation: Gas generators typically come with straightforward operational features, making them accessible even to those who may not have prior experience with generators. This ease of use can be especially beneficial during emergencies when quick setup and operation are crucial.
Power Output: Gas generators usually deliver a substantial amount of power relative to their size, making them effective for running essential appliances and tools. This characteristic is particularly valuable for users who require reliable power for both recreational and emergency situations.
What Benefits Does a Propane Generator Offer?
Propane generators offer several advantages that make them a popular choice for various applications.
- Clean Burn: Propane generators produce fewer emissions compared to gasoline or diesel generators, making them more environmentally friendly. This cleaner combustion results in less air pollution and contributes to better air quality.
- Longer Shelf Life: Propane can be stored indefinitely without degrading, unlike gasoline, which can go stale and require replacement. This means that in emergencies, your propane generator is more likely to be ready to use when you need it.
- Ease of Use: Propane generators are generally easier to start and operate than diesel generators. The ignition process is simpler, often requiring just the turn of a key, which can be particularly beneficial in urgent situations.
- Quiet Operation: Many propane generators run quieter than their gasoline counterparts, making them suitable for residential use or in situations where noise must be minimized, such as camping or outdoor events.
- High Efficiency: Propane generators often operate more efficiently than gasoline or diesel models, providing more power per unit of fuel consumed. This efficiency can lead to longer run times and reduced fuel costs over time.
- Versatility: Propane can be used in various applications beyond just generators, including heating, cooking, and powering vehicles. This versatility allows users to maintain a consistent fuel source across multiple devices.
- Safety: Propane is non-toxic and has a low risk of spillage compared to gasoline and diesel. Moreover, it has a distinct odor added for leak detection, making it safer to use in residential areas.
What Are the Pros and Cons of Diesel Generators?
| Aspect | Pros | Cons |
|---|---|---|
| Fuel Efficiency | Diesel generators are generally more fuel-efficient than gas or propane, providing longer run times. | Fuel can be more expensive and harder to source in some areas compared to gas or propane. |
| Durability | Diesel engines are built to withstand heavy use and have a longer lifespan. | They can be heavier and more complex, leading to higher maintenance costs. |
| Noise Levels | They often operate quieter than gas generators, making them suitable for residential areas. | Some models can still be quite loud, especially under heavy load. |
| Emissions | Modern diesel generators have improved emission controls, making them cleaner than older models. | They may still produce more particulate matter compared to gas options. |
| Initial Cost | Diesel generators typically have a higher initial cost than gas or propane generators. | This can be a barrier for some buyers, especially for small-scale needs. |
| Portability | Diesel generators tend to be more robust and can handle larger loads. | They are usually heavier and less portable than gas or propane generators. |
| Fuel Availability | Diesel fuel is often more widely available in rural areas. | In urban areas, gas and propane may be easier to obtain. |
How Do Different Fuel Sources Affect Generator Performance?
Different fuel sources can significantly impact the performance, efficiency, and suitability of small generators.
- Gasoline: Gasoline-powered generators are commonly used due to their availability and ease of use. They typically start easily and provide a good power output, but they can be less efficient and may require more frequent refueling compared to other sources.
- Propane: Propane generators are known for their clean-burning characteristics and longer shelf life fuel. They tend to run quieter and are less prone to engine wear, but the initial cost of propane generators can be higher, and the fuel supply may be less accessible in some areas.
- Diesel: Diesel generators are often favored for their fuel efficiency and longevity, making them ideal for heavy-duty applications. They tend to have a higher torque and better performance under load, but they can be noisier and more expensive initially, with diesel fuel availability varying by location.
Which Type of Generator is Most Cost-Effective for My Needs?
The main types of small generators to consider for cost-effectiveness are gas, propane, and diesel.
- Gas Generators: Typically the most affordable option upfront, gas generators are widely available and easy to refuel. They are often lighter and more portable than other options, making them ideal for casual use, like camping or powering tools on job sites. However, gasoline can be volatile and may have a shorter shelf life compared to propane or diesel.
- Propane Generators: Propane generators are known for their cleaner burning fuel, which results in less environmental impact and less maintenance required over time. They are more efficient than gas generators and can operate well in cold weather. However, the initial cost may be higher, and finding propane refueling stations could be a concern in some areas.
- Diesel Generators: While diesel generators tend to have a higher upfront cost, they are often more fuel-efficient and have a longer lifespan than gas or propane options. They are better suited for continuous use and larger power demands, making them ideal for construction sites or backup power for homes. The trade-off is that diesel fuel can be more expensive and may require more maintenance due to the complexity of diesel engines.
What Safety Considerations Should I Keep in Mind While Operating Small Generators?
When operating small generators, it is crucial to keep several safety considerations in mind to ensure safe and effective usage.
- Proper Ventilation: Always operate generators in well-ventilated areas to prevent carbon monoxide buildup, which can be deadly. Generators should never be used indoors or in enclosed spaces, as the fumes produced can quickly reach harmful levels.
- Distance from Structures: Maintain a safe distance between the generator and any structures or flammable materials. A minimum distance of at least 20 feet is recommended to reduce the risk of fire and ensure that exhaust fumes do not enter living spaces.
- Use of Extension Cords: If using extension cords, ensure they are rated for outdoor use and can handle the generator’s output. Using inappropriate cords can lead to overheating, electrical shock, or fire hazards.
- Fuel Storage: Store fuel in properly labeled containers, away from the generator and any ignition sources. Propane, gasoline, and diesel should be kept in a safe, cool, and ventilated area to prevent leaks and reduce the risk of fire.
- Regular Maintenance: Perform regular maintenance on the generator according to the manufacturer’s guidelines. This includes checking oil levels, fuel systems, and electrical components to ensure safe and efficient operation.
- Grounding the Generator: Properly ground the generator to prevent electrical shock. This is especially important in wet conditions, as water can increase the risk of electrical hazards.
- Overloading the Generator: Avoid exceeding the generator’s rated capacity to prevent overheating and damage. Always check the wattage of devices being powered to ensure they are within the generator’s limits.