Whole-house generators are essential backup power sources for your entire home. When the main power grid goes down, they seamlessly take over. Your lights stay on, and appliances keep running smoothly. No need to Search for flashlights or worry about food spoiling during outages.
When choosing the right whole-house generator, consider these three key factors:
- Power Output: Look for a generator with at least 8000 watts to meet your household’s needs during outages. Larger homes may need models with up to 20,000 watts, while smaller homes or RVs can manage with 3000 to 4000 watts.
- Fuel Type: Check the available fuel options. Natural gas and liquid propane are popular for their reliability and convenience. Gasoline generators are an option but may need more maintenance and be less efficient in the long term.
- Capacity: A generator should match your home’s electrical needs. For an average-sized home, 200 amps should do the job. But larger homes may require 200-300 amps to keep everything running during outages.
When considering the best whole-house generator for your needs, use this “Buying Guide” to make an informed decision.
Best Whole House Generator Table
| Best Whole House Generator | Power Output | Fuel Type | Buy Now |
|---|---|---|---|
| Westinghouse Dual Fuel Portable Generator | 1. Gasoline: Peak - 12500W Running - 9500W 2. Propane: Peak - 11200W Running - 8500W | Gasoline/Propane | Check On Amazon |
| DuroMax Gas Powered Portable Generator | 1. Gasoline: Peak - 10,000W Running - 8,000W | Gasoline | Check On Amazon |
| Champion Power Equipment Portable Generator | 1. Gasoline: Peak - 4750W Running - 3800W | Gasoline/Propane | Check On Amazon |
| WEN Whole House Generator | 1. Gasoline: Peak - 4,750W Running - 3,750W | Gasoline | Check On Amazon |
| Pulsar Heavy Duty Portable Dual Fuel Generator | 1. Gasoline: Peak - 12,000 W Running - 9500W 2. LPG: Peak - 10,800W Running - 8550W | Gasoline/Propane | Check On Amazon |
| VTOMAN LFP Battery Generator | 1. Gasoline: Peak - 3000W Running - 1500W | Battery Powered | Check On Amazon |
| A-iPower Whole House Generator | 1. Gasoline: Peak - 12,000W Running - 9,000W | Gasoline | Check On Amazon |
Best Whole House Generator Reviews
1. Westinghouse Dual Fuel Portable Generator
Westinghouse WGen9500DF is a dual-fuel generator that balances power and efficiency for any situation. Whether on gasoline or propane, it delivers up to 12500 peak watts and 11200 peak watts, respectively. Featuring a durable 457cc 4-stroke OHV engine, this generator is designed for reliability. With a 6.6-gallon fuel tank, it offers up to 12 hours of run time, ensuring your home stays powered during prolonged outages.
With electric and recoil start mechanisms and a remote key fob that works from up to 260 feet, this generator simplifies operation while enhancing convenience. Its VFT display ensures you’re always informed about voltage, frequency, and lifetime hours, allowing for easy maintenance. Safety features, including GFCI outlets with protective covers and automatic low oil shutdown, make it a durable and trustworthy option for demanding tasks.
The generator’s portability is enhanced by its rugged never-flat wheels and a fold-down handle, ensuring effortless transport and storage. Remarkably quiet despite its strong power output, it minimizes noise while maintaining efficiency. Its thoughtful features and performance make it a reliable choice for homeowners needing backup energy.
Specifications:
- Wattage: 9500 running watts, 12500 peak watts (gas)
- Fuel Type: Dual Fuel (Gasoline/Propane)
- Run Time: Up to 12 hours on 6.6-gallon tank
- Engine: 457cc 4-stroke OHV engine
- Start Type: Remote, Electric, and Recoil Start
- Outlets: GFCI, L14-30R, and RV Ready 14-50R
- Safety: Automatic low oil shutdown
- Display: VFT for real-time updates
- Portability: Never-flat wheels, fold-down handle
- Compliance: EPA, CARB
Pros:
- High power output
- Dual fuel capability
- Extended runtime
- Remote electric start
- Quiet operation
Cons:
- Quite heavy
- Minimal assembly needed
- Propane tank not included
2. DuroMax Gas Powered Portable Generator
DuroMax’s XP12000EH offers exceptional performance with 12,000 starting watts and 9,500 running watts. Featuring dual fuel functionality, it lets you choose between gasoline and propane based on convenience or fuel availability. The powerful 457cc OHV engine delivers consistent power for heavy loads, including air conditioners and high-amperage tools. With MX2 technology, it ensures maximum efficiency from the 120-volt receptacles, making it a reliable solution for high-power demands.
Designed for both efficiency and convenience, the generator features a user-friendly electric start. This generator is built to be user- and environment-friendly; it meets both EPA and CARB emission standards, making it usable in all 50 states. This includes a variety of outlets to accommodate multiple uses, from home backup to job sites or outdoor events. Its robust design is complemented by solid-fill tires and a sturdy handle kit, which enhance its portability despite its substantial weight and size.
Combining safety and versatility, this generator ensures peace of mind with features like automatic low-oil shutoff and overload protection. These safeguards keep the unit secure from damage while delivering consistent power. It’s designed to operate at both 120V and 240V simultaneously or at 120V with full power, offering flexibility for different situations. Built for reliability, it’s an excellent option for users who need substantial, steady power on demand.
Specifications:
- Wattage: 9500 running watts, 12000 peak watts (gas)
- Fuel Type: Dual Fuel (Gasoline/Propane)
- Engine: 457cc OHV DuroMax engine
- Start Type: Electric start
- Safety: Low-oil shutoff, overload protection
- Run Time: Up to 12 hours on gasoline
- Output: 120V and 240V simultaneously
- Emissions: EPA and CARB approved
- Tires: Solid-fill, never-flat tires
- Portability Kit: Sturdy handle and wheel kit
Pros:
- Powerful dual fuel engine
- Versatile voltage options
- Extended run time
- User-friendly electric start
- Robust construction
Cons:
- Loud operation
- High fuel consumption
- Requires regular maintenance
3. Champion Power Equipment Portable Generator
Champion Power Equipment’s 76533 generator stands out with its dual fuel functionality, capable of running on either gasoline or propane for unmatched versatility. Delivering 4750 starting watts and 3800 running watts on gasoline, it ensures reliable performance during power outages. Powered by a robust 224cc Champion engine, it features an electric start for effortless operation. The built-in intelligauge adds convenience by tracking voltage, hertz, and runtime hours, keeping you informed at a glance.
Designed for both home and outdoor use, the generator provides reliable power with advanced safety features. Its Cold Start Technology handles freezing conditions effortlessly, while its outlet configuration—one 120V 30A RV outlet, one 120V 30A locking outlet, and two 120V 20A household outlets—caters to diverse power requirements. The Volt Guard™ surge protector prevents overloads, and the low oil shut-off sensor offers extra protection for the engine, ensuring consistent performance and long-term reliability.
With never-flat tires and a foldable handle, the Champion 76533 is built for easy mobility and storage, making it a versatile solution for multiple scenarios. Despite its robust performance, it operates at a manageable 68 dBA from 23 feet, comparable to the sound of a vacuum cleaner. This generator’s dual fuel capability and ease of use make it a top pick for both residential and recreational needs.
Specifications:
- Wattage: 3800 running watts, 4750 starting watts
- Fuel Type: Dual Fuel (Gasoline/Propane)
- Engine: 224cc Champion 4-stroke engine
- Start Type: Electric start with battery
- Outlets: RV, locking, and household types
- Noise Level: 68 dBA from 23 feet
- Run Time: Up to 10.5 hours on propane
- Technology: Cold Start, Volt Guard™
- Portability: Folding handle, never-flat tires
- Safety: Low oil shut-off
Pros:
- Dual fuel versatility
- Quiet operation
- User-friendly electric start
- Integrated surge protection
- Reliable in cold weather
Cons:
- Limited run time on gas
- Moderate power for large homes
- Requires periodic maintenance
- Propane tank sold separately
4. WEN Whole House Generator
The WEN 56475 portable generator combines power and efficiency, equipped with a sturdy 223cc engine. Generating 4750 surge watts and 3750 rated watts, it’s an excellent choice for powering crucial devices during outages. Fully compliant with CARB and EPA III standards, this generator includes essential safety features like a voltage regulator, overload protection, and low-oil shutdown for smooth, secure operation.
Starting your generator has never been easier, thanks to its electric start feature that replaces manual pull-starting with a simple push-button solution. The integrated digital readout helps you track oil changes and maintenance schedules with ease, keeping the generator in peak condition. Designed for portability, it includes a wheel kit and foldable handles, ideal for quick storage or transport across challenging terrains.
Efficiency meets convenience with this generator, boasting a 4-gallon tank capable of powering devices for up to 10 hours at half load. Its versatility shines through a variety of receptacles, including two 120V outlets, a 30-amp 3-prong plug, and a 120V RV option. Whether you need backup power at home, electricity for your campsite, or support on a construction site, the WEN 56475 ensures reliable performance and seamless operation.
Specifications:
- Wattage: 3750 running watts, 4750 surge watts
- Engine: 223cc 4-stroke engine
- Fuel Capacity: 4 gallons
- Run Time: 10 hours at half load
- Start Type: Electric start
- Safety Features: Low-oil shutdown, overload protection
- Compliance: CARB, EPA III
- Outlets: Multiple, including RV receptacle
- Portability: Wheel kit, foldable handles
- Display: Digital readout for maintenance
Pros:
- Reliable power output
- Convenient electric start
- Extensive run time
- Multiple outlet configurations
- Portable design
Cons:
- Can be noisy under load
- Requires frequent maintenance
- Not suitable for extremely sensitive electronics
5. Pulsar Heavy Duty Portable Dual Fuel Generator
The Pulsar G12KBN heavy-duty dual fuel generator is built to deliver exceptional performance, offering 12,000 peak watts and 9,500 running watts on gasoline, along with 10,800 peak watts and 8,550 running watts on propane. Its versatility allows it to power an entire home or multiple appliances during a power outage, ensuring uninterrupted operation. Equipped with a robust 457cc single-cylinder, 4-stroke, air-cooled OHV engine and an electric start, it comes housed in a durable, powder-coated frame for long-lasting performance and reliability.
With the flexibility to run on both gasoline and propane, this generator adapts to different fuel needs, making it a versatile choice during emergencies or power outages. The electric start feature eliminates the hassle of manual pull-starts, offering a user-friendly experience. Equipped with an 8-gallon fuel tank, it provides up to 12 hours of continuous runtime at half load on gasoline, ideal for extended use. The comprehensive range of outlets, including four 120V 20A AC, one 120V/240V 30A twist-lock, one 120V/240V 50A, and a 12V DC output, ensures compatibility with a wide variety of appliances and tools.
Combining portability with reliable performance, Pulsar’s generator ensures you’re never left in the dark. Its 3-in-1 digital meter and automatic voltage regulation provide optimal functionality, while the convenient drop-down handles and durable wheels enhance mobility. Whether you’re dealing with an unexpected outage, powering tools on a job site, or enjoying a camping trip, this generator is built to handle it all with ease and reliability.
Specifications:
- Wattage: 9500 running watts, 12000 peak watts (gas)
- Engine: 457cc 4-stroke OHV engine
- Fuel Type: Dual Fuel (Gasoline/Propane)
- Start Type: Electric start
- Run Time: 12 hours at 50% load (gas)
- Outlets: Multiple, including 50A and RV ready
- Fuel Tank: 8 gallons
- Safety: Automatic voltage regulation
- Portability: Drop-down handles, never-flat wheels
- Display: 3-in-1 digital meter
Pros:
- Extremely high power output
- Dual fuel versatility
- Long runtime capabilities
- Easy electric start
- Robust and durable design
Cons:
- Can be noisy during operation
- Requires significant storage space
6. VTOMAN LFP Battery Generator
VTOMAN’s LFP battery generator excels in cutting-edge technology and delivers impressive power capabilities, providing 1500W of continuous power and 3000W at peak. Equipped with a durable LiFePO4 battery, it offers expansion up to 3096Wh with additional modules for extended reliability. Its solar compatibility and UPS functionality ensure an eco-friendly energy solution for home backup and outdoor needs.
This generator is notable for its rapid charging technology, which allows both the main unit and any extra battery packs to be charged from 0 to 100% in just two hours, offering unmatched convenience and efficiency. Its robust design includes multiple output options to accommodate a wide range of devices and appliances. With three 1500W AC outlets, two 12V DC outputs, one 12V car port, four USB-A outputs, and two USB-C PD100W outputs, the generator can simultaneously power up to 12 devices, making it indispensable during power outages or for extensive outdoor activities.
Built to prioritize safety, this generator’s advanced 10-layer protection system safeguards its battery while ensuring stability and durability. Its thoughtfully designed compact frame, combined with a reinforced handle, allows for effortless portability. With the added benefit of solar charging, this generator provides an eco-friendly and dependable power solution for emergencies or remote travels.
Specifications:
- Wattage: 1500 running watts, 3000 peak watts
- Battery Type: LiFePO4 (LFP) battery
- Capacity: Expandable to 3096Wh
- Charge Time: 2 hours to full
- Outputs: Multiple, including USB-C and DC
- Input: 400W Solar, AC, DC
- UPS Function: Yes
- Safety: 10-layer battery protection
- Portability: Sturdy handle for easy transport
- Solar Input: 400W max
Pros:
- High-capacity, expandable battery
- Fast charging capability
- Multiple output options
- Compact and portable
- Solar charging compatible
Cons:
- Limited availability of extra batteries
- Requires solar panels for full benefit
- Heavier than traditional power banks
7. A-iPower Whole House Generator
The A-iPower SUA12000E delivers an impressive 12,000 starting watts and 9,000 running watts, making it a versatile choice for powering essential household appliances during outages or handling demanding construction site tasks. Equipped with a robust 459cc OHV 4-stroke engine, this generator is built to last, offering both an electric start and a manual recoil system for convenience. Its large 7-gallon fuel tank provides up to 9 hours of runtime at 50% load, ensuring reliable energy for extended periods when you need it most.
This generator combines versatility with robust safety features, making it an excellent choice for varied power requirements. It features two 120V 20A GFCI-protected outlets, one 30A 120/240V twist-lock outlet, and a 50A 120/240V outlet, capable of supporting everything from everyday tools to high-demand appliances. The electric start simplifies usage, enabling immediate power delivery at the turn of a key. Additionally, the low oil alert and automatic shutdown mechanisms ensure reliable operation while preventing engine damage during low oil levels.
With its multifunctional display and rugged wheels, the A-iPower generator simplifies power management for both emergencies and demanding tasks. The display delivers critical real-time data on voltage, frequency, and run-time, ensuring smooth and efficient operation. Its durable, never-flat wheels and foldable handle make it easy to maneuver, whether you’re using it on a job site or at home. Balancing power, portability, and practicality, this generator is a versatile choice for a variety of applications.
Specifications:
- Wattage: 9000 running watts, 12000 peak watts
- Engine: 459cc OHV 4-stroke engine
- Fuel Type: Gasoline
- Start Type: Electric start and manual recoil
- Run Time: 9 hours at 50% load
- Tank Capacity: 7 gallons
- Outlets: GFCI, 30A twist-lock, 50A outlet
- Safety: Low oil shutdown, low oil alert
- Portability: Never-flat wheels, foldable handle
- Compliance: EPA certified
Pros:
- High power output
- Multiple outlet options
- Extended run time
- Robust construction
- Easy maneuverability
Cons:
- Noticeable operational noise
- Large storage space required
Key Factors to Consider When Buying a Whole House Generator
Investing in a whole house generator is a strategic decision, offering peace of mind during power outages and ensuring uninterrupted electricity supply to your home. However, selecting the right generator requires careful consideration of several key factors to meet your specific needs and preferences. Here’s a comprehensive guide to help you make an informed decision:
1. Power Output
Ensure the generator’s power output matches your home’s energy demands.
- For most households, a generator with a minimum power output of 8000 watts is recommended.
- Larger homes or those with higher energy requirements may benefit from generators with higher wattage, ranging from 10,000 to 20,000 watts.
- Smaller homes or recreational vehicles (RVs) can suffice with generators providing 3000 to 4000 watts of power.
2. Fuel Type
Consider the available fuel options and choose one that aligns with your preferences and accessibility.
- Natural gas generators offer convenience as they are connected directly to your home’s gas supply, ensuring a continuous fuel source.
- Liquid propane generators provide versatility and can be an excellent choice for areas without access to natural gas lines.
- Gasoline generators are readily available and can be stored for emergencies but may require more maintenance and fuel management.
3. Capacity
Evaluate your home’s electrical system to determine the appropriate generator capacity.
- Most average-sized homes require a generator with a capacity of 200 amps.
- Larger homes or those with higher energy demands may necessitate generators with capacities ranging from 200 to 300 amps.
4. Cooling Mechanism
Choose between air-cooled and liquid-cooled generators based on your preferences and requirements.
- Air-cooled generators are generally more affordable and suitable for smaller applications.
- Liquid-cooled generators offer enhanced performance and durability, making them ideal for larger homes or continuous usage.
5. Noise Level
- Consider the noise level of the generator to ensure minimal disruption, especially if located near living spaces.
- Look for generators with noise levels below 75 decibels (dB) for quieter operation and increased comfort.
6. Additional Features
- Automatic Transfer Switch (ATS): Enables seamless transition from grid power to generator power during outages, ensuring uninterrupted electricity supply.
- Mobile Monitoring and WiFi Connectivity: Allows remote monitoring and control of the generator’s status and performance via mobile devices or internet connectivity.
- Load Shedding: Automatically manages and prioritizes power distribution to essential appliances, optimizing energy usage during emergencies.
- Multiple Fuel Support: Provides flexibility by supporting multiple fuel types, offering backup options in case of fuel shortages or availability issues.
FAQs:
Based on the home’s size and the average power consumption of all electronic household appliances, you need to know the power required for the whole house generators. Usually, a generator with a 22 – 24kW power is required for medium to large homes, whereas, a 15 – 20 kW generator is enough for small homes.
Yes, whole-house generators do need regular maintenance like checking oil levels, inspecting components, and annual scheduling professional servicing. This will enhance the reliability and optimal performance.
Most generators are specially designed to operate in cold weather. So, purchase a generator with cold weather kits or heaters to ensure a smooth startup during freezing or cold temperatures.
Yes, these whole-house generators do emit harmful gases, including carbon monoxide and other gases. Proper ventilation and strictly following the installation guidelines are essential to prevent these health hazards and potential risks.
Yes, you can use a whole-house generator for off-grid living. They support only if paired with adequate fuel supplies. Thus, it is used mostly as a backup system but not as a primary power source.
Conclusion
Choosing a whole-house generator depends on your specific needs. Here are three top picks for different priorities:
- For value and versatility: The Westinghouse Generator offers a powerful option that can run on either gasoline or propane. It’s transfer switch-ready, allowing for automatic backup during outages, and its electric start adds convenience.
- For budget-conscious homeowners: The Champion Power Equipment Generator provides a reliable and affordable solution. While its wattage might not power everything during an outage, it’s a good option for essentials like refrigerators and lights.
- For heavy-duty power needs: If you have a large home or require maximum power, the Pulsar Generator boasts a whopping 12000 peak watts. It’s suitable for running air conditioners and other high-demand appliances during a power cut.
