Best Briggs & Stratton High-Capacity Standby Generators, Rated for 2026

The Westinghouse WGen9500DF is a premium portable generator designed for homeowners who need reliable backup power without compromise. With 9,500 running watts and 12,500 peak watts, it delivers sufficient power for essential household appliances, making it ideal for emergency preparedness or powering remote locations like vacation properties and job sites.

What truly sets this generator apart is its dual fuel capability and remote start functionality. You can seamlessly switch between gasoline and propane operation even while the generator is running, giving you flexibility in fuel sourcing and cost management. The included remote key fob allows starting from up to 260 feet away, while the electric push-button start and traditional recoil backup ensure you'll always get it running regardless of circumstances.

Build quality is exceptional with a durable 457cc Westinghouse 4-stroke engine featuring a cast iron cylinder sleeve designed for longevity. The automatic low oil shutdown protects your investment, and the integrated VFT display provides real-time monitoring of voltage output, frequency, and lifetime operating hours. The inclusion of both 30A and 50A transfer switch ready outlets means you can power major appliances and multiple circuits simultaneously through a single connection point.

The main consideration is that this generator requires proper setup before first use, including filling the oil reservoir with the supplied oil. Additionally, while portable with included wheels and handle, the 210-pound weight means you'll want permanent storage location planning. Transfer switch installation requires a licensed electrician and involves additional expense for the switch, inlet box, and extension cords.

For homeowners seeking a powerful, versatile backup power solution with dual fuel flexibility and remote convenience, the WGen9500DF represents excellent value. Its combination of features, runtime capability, and build quality make it a smart investment in home energy independence and emergency preparedness.

Power Output: 9,500 running watts (gasoline), 8,500 running watts (propane), 12,500 peak watts (gasoline), 11,200 peak watts (propane)

Engine: 457cc Westinghouse 4-stroke OHV air-cooled engine with cast iron cylinder sleeve and automatic low oil shutdown

Fuel Capacity: 6.6 gallons (25 liters) with integrated fuel gauge

Runtime: Up to 12 hours on gasoline at rated load

Starting System: Push-button electric start, remote key fob (260 feet range), recoil start backup

Outlets: Two 120V GFCI 20A household outlets, one 120V 30A transfer switch ready outlet, one 120/240V 50A RV ready outlet

Dimensions: 27.2 inches L x 26.1 inches W x 26.5 inches H

Weight: 210 pounds

Warranty: 3-year limited warranty with lifetime technical support

Who Should Buy This Generator? Homeowners seeking comprehensive backup power for emergencies, property owners with vacation homes or cabins, contractors needing reliable jobsite power, and anyone prioritizing fuel flexibility and remote convenience features.

Installation Considerations: For whole-home backup capability, you'll need to hire a licensed electrician to install a transfer switch. The generator supports both 30A and 50A transfer switch configurations, allowing you to power different combinations of household circuits. Budget separately for the transfer switch, inlet box, and connection cords.

Fuel Selection Guide: Use gasoline for immediate availability and maximum power output. Switch to propane for long-term storage (propane stores indefinitely), cleaner operation, lower maintenance, and cost savings. The intuitive dial on the control panel makes fuel switching effortless, even during operation.

Maintenance and Care: Before first use, fill the crankcase with the supplied oil to avoid engine damage and warranty voidification. The automatic low oil shutdown provides protection, but regular oil checks are recommended. The digital hour meter helps track maintenance intervals. Propane operation reduces overall engine maintenance compared to gasoline-only generators.

Storage and Portability: Despite its 210-pound weight, the included heavy-duty wheels, handle, and lift bracket make relocation manageable. Store in a dry location protected from the elements. The compact footprint (approximately 27 inches long) fits most garage spaces and storage sheds.

The Westinghouse WGen5300DFcv is a mid-sized portable generator engineered for homeowners and RV owners who need reliable backup power without breaking the bank. With 6500 peak watts and 5300 running watts, it handles essential household loads like refrigerators, air conditioning units, and multiple electronics simultaneously. The dual fuel capability sets it apart from single-fuel competitors, offering the flexibility to run on either gasoline or propane depending on availability and cost.

What truly distinguishes this generator is its comprehensive safety and outlet configuration. The built-in carbon monoxide sensor automatically monitors CO levels and shuts down the unit before dangerous accumulation occurs, a critical feature for indoor or semi-enclosed use. The included L14-30R 30A transfer switch outlet allows direct connection to home electrical panels for seamless whole-house power distribution, while the RV-ready TT-30R 30A outlet makes it perfect for travel trailers and camping adventures. The intuitive control panel with yellow touchpoints makes operation straightforward even for first-time users.

Build quality reflects Westinghouse's reputation for durability. The 274cc 4-stroke OHV engine features a cast iron cylinder sleeve for extended service life and automatic low oil shutdown protection. The hardened steel frame with never-flat wheels provides stability and easy movement despite the unit's 135-pound weight. Runtime stretches to 14.5 hours on a full 4.7-gallon tank, minimizing refueling frequency during extended outages. Customers consistently praise the quick startup and reliable performance across multiple seasons.

The main limitation involves additional costs for installation. Transfer switches, extension cords, and inlet boxes are sold separately, requiring consultation with a licensed electrician for proper home integration. Additionally, propane mode delivers slightly lower output (4800 running watts) compared to gasoline mode, which may affect running certain high-demand appliances simultaneously. Some users report shipping damage due to packaging, though the generator itself arrives functional.

The Westinghouse WGen5300DFcv delivers excellent value for homeowners seeking dependable backup power with safety features and RV capability. The dual fuel flexibility, comprehensive outlet selection, and CO sensor justify the investment for anyone prioritizing both convenience and peace of mind during power emergencies.

Power Output: 6500 peak watts, 5300 running watts (gasoline mode), 5800 peak watts, 4800 running watts (propane mode)

Engine: 274cc 4-stroke OHV Westinghouse engine with cast iron cylinder sleeve, air-cooled overhead valve design

Fuel Capacity: 4.7 gallons with integrated fuel gauge

Runtime: Up to 14.5 hours at 25% load on gasoline

Outlets: One 5-20R 120V household duplex receptacle, one RV-ready TT-30R 30A receptacle, one transfer switch ready L14-30R 30A receptacle (120/240V)

Dimensions: 23.2 inches L x 20.1 inches W x 19.1 inches H

Weight: 135.6 pounds

Warranty: 3-year limited warranty plus lifetime technical support

Safety Features: Carbon monoxide detection system, automatic low oil shutdown, overload protection, automatic voltage regulation

Is This Generator Right for You? The WGen5300DFcv works best for homeowners wanting reliable backup power during occasional outages and RV owners who need portable camping power. If you require continuous heavy-duty operation (100+ hours weekly), consider larger industrial models instead.

Home Backup Setup: To use this generator as a whole-house backup, you must hire a licensed electrician to install a transfer switch connected to your home's electrical panel. The generator's L14-30R outlet connects to this switch via an extension cord. Never run the generator indoors or in enclosed spaces due to carbon monoxide risk, even with the CO sensor present.

RV and Camping Use: The TT-30R 30A outlet connects directly to most travel trailers and RV electrical systems. Verify your RV's inlet type matches before purchasing. The 14.5-hour runtime suits multi-day camping trips when refueling is convenient.

Fuel Considerations: Gasoline mode provides maximum output for high-demand periods. Propane mode offers lower output but stores indefinitely without degradation, making it ideal for emergency preparedness. Many users keep propane on hand specifically for outages when gasoline supplies may be unavailable.

Maintenance and Setup: The package includes engine oil and a funnel, so fill the oil before first use. Assembly takes approximately 10 minutes. Attach the included propane hose and regulator to your propane tank. Run the generator monthly during non-emergency periods to keep the engine fresh and ensure reliability when needed.

The Briggs & Stratton 8000W Portable Generator is a residential-grade backup power solution designed for homeowners who prioritize safety, reliability, and convenience. This unit combines a robust 420cc engine with modern safety technology, making it suitable for families seeking dependable emergency power without compromising on peace of mind.

The standout feature is the patent-pending CO Guard carbon monoxide shutdown technology, which automatically detects harmful CO levels and shuts down the generator before dangerous accumulation occurs. Real-world performance data from customer reviews demonstrates exceptional longevity, with multiple users reporting 5 to 10+ years of seasonal use with minimal issues. The 9-hour runtime on a 7.5-gallon tank and 10,000-watt surge capacity enable this generator to power an entire home and run multiple appliances simultaneously.

Build quality reflects the Briggs & Stratton heritage, featuring a durable metal fuel tank, five strategically placed outlets with GFCI protection, and large 12-inch never-flat wheels for easy maneuverability. The electric key start system eliminates the frustration of pull-cord starting during stressful power outages. Routine maintenance is straightforward, requiring only annual oil changes with synthetic oil.

Two notable considerations exist: the generator produces significant noise during operation, which may concern those in noise-sensitive settings, and the oil drain plug positioning makes maintenance slightly awkward. Some users have reported component issues after extended storage, though this appears uncommon when fuel is properly managed during off-season storage.

This generator represents excellent value for homeowners seeking reliable, safe backup power. The combination of proven engineering, advanced safety features, and strong customer testimonials makes it a smart choice for residential emergency preparedness. The 3-year limited warranty and availability of replacement parts further support long-term ownership satisfaction.

Engine & Power Output: 420cc Briggs & Stratton 4-stroke engine, 8000 watts running power, 10000 watts starting power, 50 Hz frequency

Fuel & Runtime: Gasoline-powered, 7.5-gallon metal fuel tank, 9-hour runtime at 50 percent load

Outlets & Voltage: Five total outlets including four GFCI 120V household outlets and one 120/240V 30A locking outlet with rubber protective covers

Starting System: Electric key start with remote choke for convenient push-button operation

Mobility & Design: 12-inch never-flat wheels, fold-up handle for easy transport, compact black/charcoal finish

Safety & Warranty: CO Guard carbon monoxide shutdown technology, 3-year limited warranty, Model 030741

Is This Generator Right For You? This model suits homeowners in areas with frequent power disruptions, those with multiple appliances requiring backup power, and anyone prioritizing safety features. The 8000-watt capacity handles whole-home backup for most residential scenarios.

Key Considerations: Evaluate noise tolerance for your property location, ensure adequate storage space for the unit, and plan for annual maintenance including oil changes. Budget for fuel storage and consider using fuel stabilizer for off-season storage.

Maintenance Tips: Store the generator in a dry location, use fresh fuel with stabilizer, change oil annually using synthetic oil, and run the unit under load every 1-2 months to maintain engine health. Empty the fuel tank completely before long-term winter storage.

Safety Reminders: Never operate the generator indoors or in enclosed spaces. The CO Guard technology provides detection assistance but does not replace proper outdoor placement. Ensure adequate ventilation around the unit during operation and keep the generator at least 20 feet away from windows and doors.

The DuroStar DS13000MX is a premium dual-fuel portable generator designed for homeowners who need reliable whole-home backup power during storms, outages, and emergencies. With 13,000 peak watts and 10,500 running watts, this generator targets households seeking to power essential appliances like air conditioning units, refrigerators, and lighting systems when the grid fails.

What sets this model apart is its flexible dual fuel capability and user-friendly design. You can choose between gasoline for maximum power output or propane for extended runtimes and cleaner emissions. The push-button electric start works instantly out of the box, even for users without mechanical experience. The included propane regulator and remote control add convenience, while the 50-amp transfer switch ready outlet enables professional whole-home integration.

Build quality impresses with its rugged all-metal construction featuring a reinforced steel frame and power panel. This generator withstands harsh weather, heavy use, and years of storage without deterioration. The 500cc OHV engine delivers consistent, reliable power backed by a 3-year factory warranty and USA-based customer support.

The main drawback is its 220-pound weight, which necessitates professional delivery setup and a hand truck for repositioning. Additionally, whole-home installation requires hiring a licensed Master Electrician to install a transfer switch or interlock, adding to your total investment. Propane users must also manage tank supply and monitor runtime independently.

Overall, the DS13000MX represents excellent value for homeowners prioritizing reliability, fuel flexibility, and safety features. Customer feedback confirms it powers entire homes smoothly, handles AC startup demands, and starts reliably when needed most. This is a serious investment in emergency preparedness that delivers on its promises.

Power Output: 13,000 watts peak, 10,500 watts running

Fuel Type: Dual fuel, gasoline or propane

Engine: 500cc OHV 4-stroke with electronic ignition

Runtime: 8.5 hours at 50% load on gasoline, varies by propane tank size

Outlets: 5 total outlets including 50-amp heavy-duty outlet for transfer switch connection

Voltage: 240 volts, 60 hertz frequency

Dimensions: 29.75 inches length, 27.5 inches width, 25.75 inches height

Weight: 220 pounds

Warranty: 3-year limited factory warranty

Included Accessories: Oil funnel, spark plug wrench, tool set, wheel and handle kit, propane regulator, remote control, owner's manual

Is This Right For You? The DS13000MX suits homeowners in hurricane-prone or storm-heavy regions, those with older homes lacking backup power, and anyone wanting fuel flexibility. If you need portable power for RVs, job sites, and emergency backup, this generator covers all three use cases.

Installation Requirements: For whole-home use, hire a licensed Master Electrician to install a transfer switch or interlock kit. This ensures safe integration with your home's electrical panel and prevents backfeed hazards. Budget additional installation costs beyond the generator purchase price.

Fuel Considerations: Gasoline offers maximum power but requires fuel stabilizer for long-term storage. Propane provides longer runtimes, easier storage, and cleaner operation but requires tank management. Many users choose propane for emergency preparedness since it stores indefinitely without degradation.

Safety Features: The CO Alert automatically shuts down the generator if carbon monoxide reaches dangerous levels, protecting your family. GFCI outlets and surge protection prevent electrical hazards. Never run the generator indoors or in enclosed spaces regardless of these safety features.

Maintenance: Change oil regularly, use fuel stabilizer in gasoline, and perform monthly test runs to ensure reliability when emergencies strike. The 3-year warranty covers factory defects but not maintenance-related issues.

The Briggs & Stratton 6231 Cold Weather Kit is a specialized accessory designed for homeowners and businesses in cold climates who rely on standby generators for backup power. This kit addresses a critical challenge: standard generators often struggle to start and operate reliably when temperatures plummet, leaving you vulnerable during winter storms and outages.

The standout feature is its dual-component heating system. The battery warmer ensures your generator's battery maintains sufficient charge and cranking power, while the two oil heaters keep engine oil at optimal viscosity for cold starts. Both components use thermostat controls that automatically activate as temperature drops, requiring no manual intervention from you.

Build quality reflects Briggs & Stratton's century-long heritage in power equipment. At just 12 ounces, the kit is lightweight and straightforward to install on compatible 16kW and 20kW standby generator systems. The thermostatically controlled design is elegant in its simplicity, avoiding complex electronics that could fail.

The main limitation is compatibility. This kit only works with specific Briggs & Stratton standby generator models in the 16-20kW range, so verify your generator model before purchasing. Installation may require professional help, adding to total cost.

For anyone in a cold climate with a compatible Briggs & Stratton standby generator, this kit is a worthwhile investment. It transforms your generator from unreliable in winter into dependable backup power year-round. The 4-year warranty and proven -25°F performance testing provide confidence in critical situations.

Model Number: 6231

Compatibility: Briggs & Stratton 16kW and 20kW Standby Generator Systems

Included Components: Battery Warmer, Two Oil Heaters

Temperature Rating: Tested to start at -25 degrees Fahrenheit

Control Type: Thermostatically Controlled

Weight: 12 ounces

Color: Gray

Warranty: 4-year limited parts and labor warranty

Manufacturer: Briggs and Stratton Power Products

Who Should Buy This Kit? If you own a Briggs & Stratton 16kW or 20kW standby generator and live in a region where winter temperatures regularly drop below freezing, this kit is a smart investment. It's particularly valuable for those in northern climates or areas prone to severe winter storms.

Installation Considerations: Before purchasing, verify your generator model matches the compatibility list. Professional installation is recommended to ensure the battery warmer and oil heaters are properly connected to your specific generator system.

Performance Expectations: With this kit installed, your generator should reliably start and operate even in extreme cold. The thermostat handles temperature monitoring automatically, so you don't need to manually activate the warmers.

Maintenance: Once installed, the kit requires minimal maintenance. Periodically check connections and ensure the thermostat is functioning properly, especially before winter season arrives.

The Generac GP9500E is a tri-fuel portable generator designed for homeowners, contractors, and outdoor enthusiasts who need reliable backup power with maximum flexibility. This 9,500-running-watt generator adapts to your fuel situation, whether you're using a propane tank during a storm or connecting to a dedicated natural gas line for long-term backup. It's an excellent choice for whole-home emergency backup, job site power, RV use, or outdoor events.

What sets this generator apart is its remarkable fuel flexibility combined with serious power delivery. The 12,500 starting watts handle simultaneous starts of energy-intensive appliances like air conditioners, refrigerators, and sump pumps without breaking a sweat. The built-in Automatic Voltage Regulation keeps output stable, protecting sensitive electronics and motor-driven tools. Runtime is impressive too: up to 9.5 hours at 50 percent load on gasoline, 14 hours at 25 percent load, or virtually unlimited when connected to natural gas.

The build quality reflects Generac's reputation for durability. The steel-tube cradle frame is robust, and the never-flat wheels with folding handle make repositioning manageable despite the 219-pound weight. Push-button electric start with an included 12V battery eliminates frustration, and the digital hour meter helps track maintenance schedules. The control panel offers versatile outlets including dual 120V GFCI outlets, a 120/240V 30A twist-lock, and a 120/240V 50A outlet for comprehensive power needs.

Safety is engineered throughout. COsense technology continuously monitors carbon monoxide levels and automatically shuts down the unit before reaching dangerous thresholds, working silently in the background. Low-oil shutdown protection and covered GFCI outlets add multiple layers of protection. The generator is compatible with Generac HomeLink manual transfer switches, enabling safe whole-home circuit control without backfeeding hazards.

The main drawback is weight and size, which require careful placement planning before emergencies arrive. Maintenance is regular but straightforward. Most users report excellent performance and reliability, though occasional mechanical issues have been reported. Overall, the Generac GP9500E delivers exceptional value for anyone seeking a powerful, flexible backup generator that adapts to their fuel situation and protects their investment through multiple safety features.

The tri-fuel capability is the GP9500E's defining advantage. Gasoline offers the most portable option with the included 7.5-gallon tank delivering extended runtime. Propane provides cleaner burning fuel that can be stored longer without degradation, making it ideal for seasonal backup. Natural gas offers the ultimate solution for permanent installations, providing virtually unlimited runtime by connecting directly to your home's gas line.

Switching between fuels is simple: just turn a dial on the control panel. This means you can start on propane during a storm when gas stations are closed, then switch to natural gas once power is restored and your line is operational. The included natural gas conversion kit and propane hose with regulator make setup straightforward for any fuel option you choose.

COsense technology is your silent guardian. This onboard system continuously monitors carbon monoxide levels during operation and automatically shuts the generator down before CO reaches dangerous thresholds. Unlike detectors that only alert you after hazardous levels are reached, COsense prevents the danger proactively.

Additional safety layers include automatic low-oil shutdown that protects the engine from damage, GFCI-protected outlets that prevent electrical hazards, and covered outlets that protect against accidental contact. The stable voltage output from the Automatic Voltage Regulation system prevents damage to sensitive electronics like computers, medical equipment, and smart home devices.

The Briggs & Stratton 6250W Dual Fuel Inverter Generator is a premium portable power solution designed for homeowners, RV enthusiasts, and anyone needing reliable backup electricity. With its impressive 6250 starting watts and 5000 running watts, combined with dual fuel capability, this generator offers the flexibility and raw power needed for both emergency home backup and extended off-grid adventures.

What truly sets this generator apart is its combination of advanced inverter technology, Automatic Voltage Regulation, and quiet operation. The built-in inverter ensures a clean, stable 60 Hz output that safely powers sensitive electronics like laptops and mobile devices without harmful voltage spikes. The innovative open-frame design with built-in muffler keeps noise levels down to a neighborhood-friendly 60 dB, significantly quieter than comparable models. With an 11.4-hour runtime on gasoline or 9 hours on propane at 25% load, you get extended use between refueling, making it practical for real-world scenarios.

Build quality reflects Briggs & Stratton's reputation for durability, with a robust 306cc OHV 4-stroke engine housed in a construction of aluminum, steel, and polypropylene. The comprehensive control panel includes an RV receptacle, three 120V household outlets, and two USB Type-A ports, covering virtually every power need. Safety is prioritized with ANSI/PGMA G300 certified CO detection and shutoff, low-oil shutdown, and automatic overload protection, giving you peace of mind during operation.

The main limitation is portability due to its 136-pound weight, though the included 8-inch wheel kit helps manage this. The open-frame design also requires weather protection during outdoor use. Additionally, there are currently no user reviews available to confirm real-world performance and long-term reliability.

This is an excellent choice for those prioritizing power capacity, fuel flexibility, and clean electricity output over lightweight portability. It represents solid value for homeowners, RV owners, and serious outdoor enthusiasts who need dependable backup or off-grid power.

Power Output: 6250 starting watts / 5000 running watts at 120V and 240V
Engine: 306cc OHV 4-Stroke Briggs & Stratton
Fuel Type: Gasoline or Liquefied Petroleum Gas (dual fuel)
Fuel Tank Capacity: 5 gallons
Runtime: 11.4 hours on gas / 9 hours on propane at 25% load
Noise Level: 60 dB
Voltage Output: 120/240V AC, 60 Hz

Power Delivery: 41.66 amps at 120V / 20.83 amps at 240V
Dimensions: 26.5 inches L x 21 inches W x 22.6 inches H
Weight: 136 pounds
Materials: Aluminum, steel, and polypropylene construction
Outlets: 1 RV receptacle, 3 x 120V household outlets, 2 x USB Type-A ports
Certifications: EPA approved, CSA certified, UL safety listed, C.A.R.B. certified (49 state)
Warranty: 3-year consumer / 1-year commercial limited warranty

Who Should Buy This Generator? This model is ideal for homeowners seeking reliable backup power for major appliances during outages, RV owners needing portable 120/240V power, and off-grid enthusiasts who value fuel flexibility and extended runtime. The dual fuel capability makes it particularly valuable in areas where fuel availability varies seasonally.

Power Requirements: With 5000 running watts, this generator can reliably power most household appliances including refrigerators, water heaters, air conditioning units, and multiple devices simultaneously. Use the 41.66 amps at 120V or 20.83 amps at 240V to calculate compatibility with your specific needs.

Fuel Considerations: The dual fuel design allows you to store propane long-term without degradation, making propane ideal for emergency backup. Gasoline offers better availability but requires fuel stabilizer for storage. The 5-gallon tank provides substantial runtime, reducing refueling frequency during extended use.

Noise and Placement: At 60 dB, this generator is suitable for residential areas and campgrounds where noise restrictions exist. However, the open-frame design requires weather protection from rain. Consider a generator cover or canopy for outdoor installations, ensuring proper ventilation to prevent CO buildup.

Parallel Operation: For double the power output, you can connect two compatible units using a parallel kit (sold separately). This scalability makes it a future-proof investment for growing power needs.