If you need a reliable backup power source for your greenhouse, a dual fuel generator offers flexibility by running on both gasoline and propane. The GENMAX 9000W Dual Fuel Generator stands out for its high power output and remote start, making it ideal for larger greenhouses. Meanwhile, the WEN 6800-Watt Dual Fuel Generator provides a more budget-friendly, portable option with essential safety features like a CO watchdog. The main tradeoffs in this category involve balancing power capacity, ease of operation, and fuel versatility. Continue reading for a detailed breakdown of the best dual fuel generators suited for greenhouse backup needs.
Key Takeaways
- Higher wattage models like Westinghouse 12500W provide robust power for larger greenhouses but come with increased size and weight.
- Inverter generators such as the A-iPower 4300W are quieter and more fuel-efficient, ideal for smaller or noise-sensitive greenhouse environments.
- Remote start and CO sensors significantly improve safety and convenience, especially for frequent or long-term backup use.
- Fuel versatility varies; propane models offer longer storage stability, but some generators sacrifice power capacity for fuel flexibility.
- Price points vary widely; choosing a generator that balances capacity, features, and budget is key for most greenhouse applications.
| GENMAX 9000W Dual Fuel Portable Generator with Remote Start and Parallel Capability |  | Best Overall for Versatility and Power | Engine: 458cc 4-stroke OHV | Power Output: 9000 peak / 7600 rated watts | Fuel Tank Capacity: 6.9 gallons | VIEW LATEST PRICE | See Our Full Breakdown |
| WEN 6800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator with CO Watchdog |  | Best for Sensitive Electronics and Portability | Engine Displacement: 224cc | Surge Watts (Gasoline): 6800 | Rated Watts (Gasoline): 5100 | VIEW LATEST PRICE | See Our Full Breakdown |
| 11000W Dual Fuel Inverter Generator for Home Backup, RV, & Camping – Quiet, Remote Start, CO Sensor, ECO Mode, 50A Outlets, Gas & Propane Powered |  | Best for Heavy-Duty Backup and Extended Use | Peak Power: 11,000W | Fuel Tank Capacity: 8.7 gallons | Runtime: up to 21 hours | VIEW LATEST PRICE | See Our Full Breakdown |
| A-iPower 4300-Watt Dual Fuel Portable Inverter Generator, RV Ready, Lightweight with CO Sensor |  | Best for Portability and Sensitive Electronics | Engine: 149cc OHV 4-cycle | Starting Watts: 4,300 | Running Watts: 3,450 | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse 12500 Watt Dual Fuel Portable Generator with Remote Electric Start |  | Best for High Power and Backup Reliability | Peak Watts (Gasoline): 12500 | Running Watts (Gasoline): 9500 | Fuel Tank Capacity: 6.6 gallons | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse 14500 Peak Watt Dual Fuel Portable Generator with Remote Electric Start |  | Best Overall for High-Power Greenhouse Backup | Peak Wattage: 14,500 watts | Running Wattage: 11,500 watts | Fuel Types: Gasoline, Propane, Natural Gas | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse 12500 Peak Watt Dual Fuel Portable Generator with Remote Electric Start and CO Sensor |  | Best for Moderate Power Greenhouse Backup with Safety Features | Peak Wattage: 12,500 watts | Running Wattage: 9,500 watts | Fuel Types: Gasoline, Propane | VIEW LATEST PRICE | See Our Full Breakdown |
| PowerSmart 3800 Watt Dual Fuel Inverter Generator, Quiet Portable Gas Propane Powered with CO Sensor and RV Ready Outlet |  | Best for Small Greenhouses & Quiet Backup | Power: 3800 Surge Watts / 3300 Rated Watts | Engine: 149cc 4-Stroke OHV | Noise Level: 70dB at 23 feet | VIEW LATEST PRICE | See Our Full Breakdown |
More Details on Our Top Picks
GENMAX 9000W Dual Fuel Portable Generator with Remote Start and Parallel Capability
The GENMAX GM9000iED stands out for offering a powerful 9000 peak watts and the convenience of remote start, making it a top choice for those needing reliable backup power in a greenhouse setting. Its dual fuel capability on gas or propane provides flexibility during extended outages, unlike smaller inverter options such as the A-iPower SUA4300iD. The parallel capability allows scaling up power if needed, though it requires an additional kit, adding complexity. Compared with the Westinghouse 12500, it is more portable but slightly less powerful, making it suitable for midsize greenhouses rather than large-scale operations. The heavy weight and complex setup might challenge beginners, but experienced users will appreciate its robustness and support. This generator makes the most sense for growers who want high power, remote start, and future expandability without sacrificing too much portability.
Pros:- Powerful 9000W peak output with parallel capability for expanded power needs
- Remote start for quick, convenient operation
- Quiet operation at 62 dBA minimizes disturbance during use
- Flexible dual fuel options for extended runtime
Cons:- Parallel kit sold separately, adding extra cost
- Relatively heavy, reducing portability for some users
- Setup can be complex for those unfamiliar with generators
Best for: Greenhouse owners needing substantial backup power with remote start and scalability
Not ideal for: Small hobbyists or beginner gardeners who prefer lightweight, simple solutions
- Engine:458cc 4-stroke OHV
- Power Output:9000 peak / 7600 rated watts
- Fuel Tank Capacity:6.9 gallons
- Fuel Type:Gas or Propane
- Noise Level:62 dBA at 25% load
- Parallel Capability:Yes, up to 18,000 peak watts
Bottom line: This generator is best for experienced greenhouses seeking high power, remote operation, and expandability in a backup system.
WEN 6800-Watt Dual Fuel RV-Ready Electric Start Portable Inverter Generator with CO Watchdog
The WEN 6800-Watt Inverter Generator offers clean, stable power suitable for sensitive greenhouse electronics, with dual-fuel flexibility for longer operations on propane or gasoline. Its electric start and CO safety features make it user-friendly and safe, especially compared to larger, noisier models like the Westinghouse 12500. Although its run time of up to 6.1 hours on gasoline and 9 hours on LPG is more limited, it compensates with portability—thanks to wheels and a telescoping handle—ideal for small to medium greenhouses. It lacks the raw power of larger generators but provides enough capacity for lighting and small equipment. Its safety features and quiet operation make it a reliable backup for greenhouse environments where electronics are sensitive. This pick is perfect for growers needing compact, reliable power with sensitive electronics and easy mobility.
Pros:- Provides clean, stable power safe for sensitive electronics
- Dual-fuel capability extends operational flexibility
- Includes safety features like CO shutdown sensor and fuel shutoff
- Portable with wheels and telescoping handle
Cons:- Limited runtime of around 6-9 hours depending on load
- Weight not specified, which may affect portability assessment
- Additional parallel kit sold separately for higher capacity
Best for: Greenhouse operators prioritizing clean, stable power with portability and safety features
Not ideal for: Large-scale operations requiring high wattage or extended runtime without frequent refueling
- Engine Displacement:224cc
- Surge Watts (Gasoline):6800
- Rated Watts (Gasoline):5100
- Fuel Tank Capacity:2.9 gallons
- Run Time:up to 6.1 hours (gasoline), up to 9 hours (LPG)
- Noise Level:64 dB at quarter load
Bottom line: This inverter generator is ideal for greenhouse setups needing portable, electronics-safe power with quick start and safety features.
11000W Dual Fuel Inverter Generator for Home Backup, RV, & Camping – Quiet, Remote Start, CO Sensor, ECO Mode, 50A Outlets, Gas & Propane Powered
The 11000W dual fuel inverter generator delivers substantial power for greenhouse backup, with a peak of 11,000W on gasoline and 50A outlets for heavy appliances or multiple systems. Its quiet operation at 65dB and ECO mode help reduce noise and fuel consumption, making it suitable for longer outages. Compared with the Westinghouse 12500, it offers a more compact, quieter experience, though at a higher cost and larger size. The automatic safety sensors and multiple outlets make it reliable for critical greenhouse systems, but its size and weight require significant storage space. It’s best suited for growers who need high power with minimal noise and can accommodate its size. This generator is ideal for large greenhouses needing robust backup with seamless transfer and extended runtime.
Pros:- High power output suitable for heavy-duty applications
- Quiet operation with ECO mode for efficiency
- Automatic safety sensors and multiple outlets for reliable backup
- Extended runtime of up to 21 hours at 25% load
Cons:- Large size and weight may be difficult to store or move
- Higher price point compared to smaller models
- Setup may be complex for those unfamiliar with advanced generators
Best for: Large greenhouse operations needing high wattage, quiet operation, and safety features for critical systems
Not ideal for: Small or hobby greenhouses with limited space or lower power needs
- Peak Power:11,000W
- Fuel Tank Capacity:8.7 gallons
- Runtime:up to 21 hours
- Noise Level:65 dB
- Outlets:50A, 30A, two 20A GFCI 120V
- Start Type:Electric with manual backup
Bottom line: This generator is best for large greenhouses requiring powerful, quiet, and reliable backup with seamless transfer capability.
A-iPower 4300-Watt Dual Fuel Portable Inverter Generator, RV Ready, Lightweight with CO Sensor
The A-iPower SUA4300iD offers a compact and lightweight solution for greenhouse backup, with 4,300 starting watts and clean power ideal for sensitive electronics and small systems. Its dual fuel ability on gas and propane provides flexibility, while its lightweight design with a telescoping handle and wheels makes it easy to move around. Compared to larger models like the GENMAX 9000W, it sacrifices raw power for portability and ease of use, which makes it suitable for small to medium greenhouses or supplemental backup. The runtime of 7.5 hours at 25% load may require frequent refueling during extended outages, but its quiet operation at 63dB makes it less disruptive. It’s best suited for growers who need a portable, electronics-safe generator for light-duty backup or supplemental power.
Pros:- Lightweight, portable with wheels and telescoping handle
- Quiet operation at 63dB reduces noise disturbance
- Clean power safe for sensitive electronics
- Dual fuel capability for extended use
Cons:- Limited runtime of about 7.5 hours at 25% load
- Lower power output limits heavy equipment use
- Fuel capacity may necessitate frequent refueling
Best for: Small greenhouses or growers needing a portable, safe power source for electronics and light equipment
Not ideal for: Large greenhouses with high power demands or extended outages requiring longer runtime
- Engine:149cc OHV 4-cycle
- Starting Watts:4,300
- Running Watts:3,450
- Fuel Tank Capacity:1.6 gallons
- Run Time at 25% Load:7.5 hours
- Noise Level:63 dB
Bottom line: This generator is ideal for growers who need portable, electronics-safe backup with easy mobility for small-scale applications.
Westinghouse 12500 Watt Dual Fuel Portable Generator with Remote Electric Start
The Westinghouse 12500 offers an impressive 12,500 peak watts on gasoline and 11,200 on propane, making it suitable for large greenhouses with extensive power needs. Its remote electric start enhances convenience, especially during emergencies or long outages. While it provides significant wattage, it is also heavier and larger than smaller models like the WEN 6800, requiring dedicated storage space and handling. Its durable 457cc engine ensures long-lasting performance, but the size and weight may limit mobility. Compared to inverter models, it trades quiet operation for raw power, making it better suited for fixed backup stations rather than portable use on the go. This generator is best for large-scale greenhouse setups that demand reliable, high-capacity power with minimal fuss.
Pros:- High wattage output suitable for large equipment and multiple systems
- Remote electric start for quick, easy operation
- Multiple outlets with safety covers for versatility
- Long-lasting 457cc engine for durability
Cons:- Heavy and large, requiring significant storage space
- Potentially limited mobility for dynamic greenhouse layouts
- Costlier than smaller or inverter options
Best for: Large greenhouses needing dependable, high-wattage backup with remote start
Not ideal for: Small or portable setups where ease of movement and quiet operation are priorities
- Peak Watts (Gasoline):12500
- Running Watts (Gasoline):9500
- Fuel Tank Capacity:6.6 gallons
- Runtime:up to 12 hours
- Outlets:GFCI 120V 5–20R, Transfer Switch Ready 120V L14-30R, RV Ready 120/240V 14–50R
- Engine:457cc Westinghouse 4-Stroke OHV
Bottom line: This generator is best for large greenhouses prioritizing high power, durability, and remote operation over portability.
Westinghouse 14500 Peak Watt Dual Fuel Portable Generator with Remote Electric Start
The Westinghouse WGen11500DFc stands out for delivering exceptional power output—up to 14,500 peak watts—making it ideal for supporting large greenhouse systems with multiple grow lights, pumps, and climate controls. Compared with the PowerSmart inverter, it provides significantly more wattage, but this comes with increased weight and noise. Its dual fuel capability offers flexibility if you prefer propane or natural gas to reduce emissions and refueling hassle, which is a notable advantage during extended outages or remote setups. The remote electric start adds convenience, especially when the generator is placed in hard-to-reach spots. Long runtime of up to 19 hours on a 9.5-gallon tank minimizes refueling, but its size and weight make transportation challenging without wheels. It’s better suited for permanent or semi-permanent installations rather than frequent moving. The 3-year warranty provides peace of mind for long-term use.
Tradeoff: While its power is impressive, the size and noise level make it less ideal for small, quiet greenhouse environments where a quieter, more portable option may be preferred.Pros:- High power output suitable for large greenhouse systems
- Dual fuel flexibility with propane, natural gas, and gasoline
- Remote start and transfer switch readiness for easy operation
- Long runtime on a full tank minimizes interruptions
Cons:- Heavy and difficult to move without wheels
- Complex setup may challenge beginners
- Relatively high noise levels
Best for: Greenhouse operators needing a robust, high-capacity backup that can power multiple systems simultaneously.
Not ideal for: Small-scale greenhouses or gardeners seeking a lightweight, ultra-quiet backup solution for minimal equipment.
- Peak Wattage:14,500 watts
- Running Wattage:11,500 watts
- Fuel Types:Gasoline, Propane, Natural Gas
- Run Time:Up to 19 hours
- Engine:550cc 4-Stroke OHV
- Fuel Tank Capacity:9.5 gallons
Bottom line: This generator is best suited for large greenhouses where high power capacity and fuel flexibility outweigh portability concerns.
Westinghouse 12500 Peak Watt Dual Fuel Portable Generator with Remote Electric Start and CO Sensor
The Westinghouse WGen9500DFc offers a solid balance between power and convenience, producing up to 12,500 peak watts and 9,500 running watts on gasoline or propane. Compared with the larger WGen11500DFc, it provides enough capacity for most greenhouse setups but is easier to transport and manage. Its remote electric start enhances usability during emergencies, and safety features like a CO sensor ensure safe operation in enclosed or semi-enclosed greenhouses. With a 457cc engine and a runtime of up to 12 hours, it supports critical systems without requiring frequent refueling. Multiple outlets, including transfer switch-ready and RV outlets, make it adaptable for various backup needs. However, its weight and setup complexity may deter first-time users, and the price point is relatively high for the wattage. It’s an excellent middle-ground choice for growers who want reliable power without the bulk of larger models.
Tradeoff: While easier to handle than larger units, it still may be too heavy for frequent repositioning or small-scale greenhouses with limited space.Pros:- High wattage output with dual fuel capability
- Remote electric start for convenience
- Includes CO sensor and safety features
- Multiple outlets for versatile connections
Cons:- Heavy and potentially difficult to move
- Setup could be complex for beginners
- Higher price relative to smaller models
Best for: Greenhouse managers with moderate power needs seeking a reliable, safety-conscious backup solution.
Not ideal for: Gardeners with tiny greenhouses or those prioritizing portability over capacity, as it may be somewhat cumbersome.
- Peak Wattage:12,500 watts
- Running Wattage:9,500 watts
- Fuel Types:Gasoline, Propane
- Engine:457cc 4-Stroke OHV
- Fuel Tank Capacity:6.6 gallons
- Run Time:Up to 12 hours
Bottom line: This generator suits growers requiring dependable backup power with safety features and moderate capacity, but not those needing lightweight portability.
PowerSmart 3800 Watt Dual Fuel Inverter Generator, Quiet Portable Gas Propane Powered with CO Sensor and RV Ready Outlet
The PowerSmart 3800 Watt inverter generator excels in quiet, portable backup power for smaller greenhouse setups or supplemental power needs. Its 3,800 surge watts and 3,300 rated watts on gasoline, with slightly lower capacity on propane, make it suitable for running essential fans, lights, and small pumps. The inverter design produces clean, stable power that’s safe for sensitive electronics, an advantage over larger, less refined models. Weighing only about 50.7 pounds and fitting into a compact footprint, it’s easy to move and position where needed, making it ideal for greenhouses with limited space or those requiring frequent repositioning. The integrated CO sensor and overload protection add safety for enclosed environments. However, its runtime is limited—around 8-10 hours on a full tank—and manual start might be less convenient than electric models, which could be a downside during emergencies.
Tradeoff: The lower power capacity means it can’t support the entire greenhouse system simultaneously but works well for critical, smaller loads.Pros:- Quiet operation at 70dB
- Lightweight and compact for portability
- Produces clean power safe for sensitive electronics
- Includes safety features like CO sensor
Cons:- Limited runtime on a single tank
- Manual start less convenient during emergencies
- Lower wattage capacity limits large equipment support
Best for: Small-scale greenhouse operators needing quiet, portable backup power for essential equipment.
Not ideal for: Large greenhouses or those with extensive equipment requiring higher wattage or longer runtime.
- Power:3800 Surge Watts / 3300 Rated Watts
- Engine:149cc 4-Stroke OHV
- Noise Level:70dB at 23 feet
- Weight:50.7 lbs
- Dimensions:21.9 x 13.4 x 19.5 inches
- Receptacle:RV-ready TT-30R
Bottom line: This inverter generator is ideal for small greenhouses or supplemental backup where quiet operation and portability are priorities, not high power capacity.
How We Picked
I evaluated these generators based on several critical factors relevant to greenhouse backup needs, including power output, fuel versatility, portability, safety features, and ease of use. Reliability and build quality also played a role, as greenhouse environments demand durable equipment. Generators with higher wattage were prioritized for larger setups, while inverter models were favored for quieter operation. I also considered user safety features like CO sensors and remote start options, which are essential for continuous, unattended operation. The ranking reflects a balance of performance, safety, and value, tailored to different greenhouse sizes and budgets.Factors to Consider When Choosing Best Dual Fuel Generator For Greenhouse Backup
Choosing the best dual fuel generator for your greenhouse backup involves understanding several key factors. Power capacity must match your greenhouse’s energy needs without overbuying, which can lead to unnecessary expense. Fuel type and storage stability are also important; propane offers longer shelf life, but gasoline provides quick power. Portability matters if your greenhouse is in a remote location or requires frequent setup adjustments. Safety features such as CO sensors and remote start can prevent accidents and simplify operation. Finally, consider your budget and the long-term value the generator provides, balancing initial cost against durability and features.Power Output and Capacity
Ensuring the generator provides enough wattage for your greenhouse’s critical systems is vital. Larger setups may require 10,000+ watts to run fans, heating, lighting, and watering systems simultaneously. Opting for a generator with a slightly higher capacity than your current needs allows room for expansion or additional equipment. However, excessive capacity can lead to higher costs and fuel consumption. For smaller greenhouses, inverter models around 4,000–6,000 watts often suffice, offering quieter operation and fuel efficiency. Always calculate your total power requirements before choosing.
Fuel Versatility and Storage
Dual fuel generators typically run on gasoline and propane, but each choice carries tradeoffs. Propane offers cleaner burning, longer shelf life, and less maintenance, making it ideal for infrequent use or long-term storage. Gasoline, however, provides quick refueling and often higher power output. Some models include automatic switching or dual fuel capability, adding convenience. Consider your fuel storage space and access—if your greenhouse is remote, propane tanks stored on-site can be a reliable backup option, reducing the risk of fuel spoilage or shortages.
Portability and Size
Greenhouse backup generators vary from lightweight inverter units to heavy-duty models. Portability becomes important if you need to move the generator for maintenance, seasonal use, or different backup locations. Larger models like the Westinghouse 14500W are powerful but heavy, requiring sturdy setup and possibly wheels or lifts. Smaller inverter generators are easier to handle and store, but may lack the capacity for larger greenhouses. Think about your space constraints and whether you prefer a fixed or portable solution.
Safety and Convenience Features
Features such as CO sensors, remote start, and automatic shutoff enhance safe operation, especially when the generator runs unattended for extended periods. CO sensors detect dangerous fumes, shutting down the unit if CO levels become unsafe—a critical feature in enclosed greenhouse environments. Remote start adds convenience, allowing you to activate the generator without manual effort, useful during cold weather or in emergencies. These features often come with a higher price but significantly improve safety and ease of use for continuous backup power.
Budget and Long-Term Value
While cost is always a factor, investing in a slightly more expensive generator with better features and durability can pay off over time. Cheaper units may lack safety features, have lower fuel efficiency, or require more maintenance, leading to higher total ownership costs. Consider your greenhouse’s size and power needs—spending more upfront on a high-capacity, reliable generator might be more cost-effective than frequently replacing cheaper models. Also, evaluate warranty support and availability of replacement parts to ensure long-term reliability.
Frequently Asked Questions
Can I run my greenhouse on propane during winter?
Yes, propane is an excellent choice for winter backup because it stores well over time and burns cleaner than gasoline. Propane-powered generators can operate in cold temperatures without the fuel gelling or degrading, making them reliable for winter conditions. Ensure your generator is rated for cold weather operation and that you have an adequate supply of propane tanks stored safely nearby. This setup minimizes the risk of running out of fuel during extended outages, keeping your greenhouse operational through harsh weather.
How much wattage do I need for a typical greenhouse?
The wattage required depends on the size and equipment of your greenhouse. A small greenhouse with basic lighting and ventilation might need around 3,000 to 5,000 watts, while larger setups with heating, irrigation, and grow lights could require 10,000 watts or more. It’s best to list all critical devices and their startup and running wattages to get an accurate total. Overestimating slightly can help accommodate future expansion or unexpected power surges, ensuring reliable backup during outages.
Are inverter generators suitable for powering greenhouse equipment?
Inverter generators are well-suited for powering sensitive greenhouse equipment due to their cleaner, stable power output. They operate quietly, consume less fuel, and produce less fluctuation in voltage, which protects electronics like sensors, control systems, and lighting. However, inverter models often have lower wattage capacities compared to traditional portable generators, so they are best for smaller setups or as supplementary backup. For larger greenhouses, combining inverter units with higher-capacity models might be necessary.
What safety features should I look for in a backup generator?
Key safety features include carbon monoxide (CO) detectors, automatic shutoff, and remote start capability. CO detectors are crucial in enclosed greenhouse environments, preventing dangerous gas buildup. Automatic shutoff systems protect against overloads and fuel leaks, reducing fire risks. Remote start allows you to activate the generator from a distance, which is safer and more convenient, especially in cold weather. Ensuring your generator includes these features can protect both your equipment and personnel during power outages.
Is it worth paying extra for a generator with remote start and CO sensors?
Investing in a generator with remote start and CO sensors often provides significant safety and convenience benefits, especially if the generator will run unattended for long periods. Remote start simplifies operation, saving time and effort during emergencies or cold weather. CO sensors are essential safety devices that can prevent poisoning incidents. While these features increase initial costs, their safety and operational advantages often justify the expense, particularly for larger or more critical greenhouse setups.
Conclusion
The best overall choice for most greenhouse owners is the Westinghouse 12500 Watt Dual Fuel Generator, offering a strong balance of power, safety features, and reliability. If you prioritize budget-friendly options, the WEN 6800-Watt Generator provides essential backup at a lower cost. For larger greenhouses demanding maximum capacity, the Westinghouse 14500 Watt Model is preferable despite its size. Beginners or smaller operations should consider inverter models like the PowerSmart 3800 Watt for quieter, more manageable backup. Ultimately, your choice depends on your greenhouse size, power needs, and safety priorities—matching the right generator to your specific setup ensures continuous, safe operation during outages.
