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 Chart
| Best Whole House Generator | Wattage | Voltage | Warranty | Buy Now |
|---|---|---|---|---|
| Westinghouse Dual Fuel Portable Generator | 9500 Watts | 120 Volts | 3 Years | Check On Amazon |
| DuroMax XP5500EH Electric Portable Generator | 5500 Watts | 120/240 Volts | 3 Years | Check On Amazon |
| Champion Power Equipment Portable Generator | 3800 Watts | 120 Volts | 3 Years | Check On Amazon |
| WEN Whole House Generator | 4750 Watts | 120 Volts | 2 year | Check On Amazon |
| Pulsar Heavy Duty Portable Dual Fuel Generator | 12000 Watts | 120/240 Volts | 1 Year | Check On Amazon |
| A-iPower Whole House Generator | 12000 Watts | 120 Volts | -- | Check On Amazon |
Best Whole House Generator Reviews
1. Westinghouse Dual Fuel Portable Generator
On the top of our picks, we are putting one of the most powerful options for a whole house generator. This generator is made by Westinghouse, a trusted brand for generators.
Present at the top, we have the Westinghouse WGen9500DF Generator. It is one of the powerful options that we have picked for this list, making it suitable for indoor as well as outdoor applications. This generator offers 9500 running watts capacity whereas the peak rating for this generator goes as high as 12500 watts whilst being powered by gasoline. You can also use this generator with propane, offering a peak capacity of 11200 watts. With the included key fob, you can also remotely start this unit from anywhere in your house.
The Westinghouse WGen9500DF Generator offers a 6.6 gallons fuel tank. Once it is full, the generator can be used for about 12 hours without any problem. There are 4 outlets present on the Westinghouse WGen9500DF Generator that are 2 GFCI standard household outlets, one transfer switch, and one RV ready outlet. There is a 475 CC gas engine powering this generator. Despite the powerful output, the engine itself is pretty reliable with cast iron sleeves and an automatic low-oil shutdown feature.
Specifications:
- Wattage: 9500 watts
- Fuel Type: Electric
- Item Weight: 210 pounds
- Voltage: 120V volts
- Output Wattage: 12500 watts
- Special Feature: Electric Start, Automatic Voltage Regulation, Hour Meter, Dual Fuel, Fuel Gauge
- Engine Type: 4 Stroke
Pros:
- One of the most powerful options
- Remote start key fob available
- Multiple outputs are available
Cons:
- Pretty expensive unit for basic household applications
2. DuroMax XP5500EH Electric Portable Generator
For a basic household generator, you don’t need to spend a fortune if you go with brands like DuroMax. It is one of the brands that offer budget options for mid-range generators.
In the 2nd place, we are putting the DuroMax XP5500EH electric start generator. With a starting power of 5500 watts and a continuous running power ranging up to 4500 watts, this generator is capable of handling a lot of load from basic household appliances. On top of that, you also get the dual fuel option with the DuroMax XP5500EH electric start generator. You can power this unit with gasoline or propane, whichever is easily available to you.
Coming to the engine, the DuroMax XP5500EH electric start generator is powered by a 224 CC OHV engine offering sufficient power to the generator to offer a stable electric supply. And the MX2 technology offers the maximum power output from each of the 120 volts standard AC outlets of the generator. You can also switch to 240 volts output based on your application. To allow simultaneous applications, the DuroMax XP5500EH electric start generator features 2 standard 120 volts GFCI outlets and one 120/240 30A twist-lock outlet.
Specifications:
- Wattage: 500 watts
- Fuel type: GASOLINE OR PROPANE
- Item Weight: 124 pounds
- Voltage: 120 volts
- Output wattage: 5500 watts
- Engine Type: 4 Stroke
- Special Feature: Electrical
Pros:
- Suitable pick for basic household applications
- Multiple outlets are provided
- Offers dual fuel operation
Cons:
- Fuel tank should have been larger
3. Champion Power Equipment Portable Generator
If you wish to power basic and crucial home appliances such as lights and fans with a generator, then this option from Champion Power will be ideal for you. This is also the most affordable option available on this list.
The Champion Power 76533 is the cheapest and most compatible option we have for small applications on this list. This unit is rated for 3800 watts of power output which is more than enough to power crucial household accessories in the event of a power cut. Plus, you also get the option of dual-fuel operation with the Champion Power 76533, offering you a choice between gasoline and propane. The Champion Power 76533 has a fuel tank of 0.6-quarts which is enough for about 9 hours thanks to the 224 CC engine powering the unit.
Despite being the most affordable option, the Champion Power 76533 offers a great value for the money since it arrives with 0.6-quarts included in the package. It also performs automatic shutoff when it is running low on the oil, preventing damage to the internal parts of the engine as well as the generator. You can also monitor the overall output of the generator as well as other factors such as voltage, run-time hours, and hertz to get an idea about the maintenance intervals. Even though this is a rather compact unit, it has 4 outlets that are 120 volts 30A RV, 120 volts 30A locking, and two 120 volts 20A household AC outlets.
Specifications:
- Wattage: 3800 watts
- Fuel type: Gasoline, propane(LPG)
- Item weight: 119 pounds
- Voltage: 120 volts
- Noise Level: 68 dBA from 23 ft
- Engine Type: 4 Stroke
- Starting Wattage: 4750 watts
Pros:
- Great option for low-load applications
- Energy-efficient design with a 224 C engine
- Great companion for frequent power cuts
Cons:
- Power output might be too low for some users
4. WEN Whole House Generator
WEN 56475 4750-Watt Portable Generator is the dependable power companion for home or work. This handy generator gives you power outages and strong support for tools and appliances at work or campsites. This generator has a strong 223cc OHV engine that gives you lots of power 4750 watts for a boost and a steady 3750 watts for reliable performance.
This generator meets strict emission standards set by CARB and EPA III for cleaner operation. The generator includes wheels and foldable handles, making it easy to carry wherever you need power. The 4-gallon tank can run for 10 hours with just half the tank filled, so you can use it for a long time without any breaks. This tough generator is made to last and runs on gas. It has a reliable 4-stroke engine for added durability. The generator comes with a 12V battery included, making it even more user-friendly. It comes with 2-year warranty.
Specifications:
- Wattage: 4750 watts
- Fuel Type: Electric
- Item Weight: 112.5 pounds
- Running Wattage: 3750 watts
- Power Source: Gas Powered
Pros:
- Reliable power for home or work
- Easy to transport
- Long runtime
- Sturdy and durable design
- Attractive aesthetics
Cons:
- May be heavy for some users
5. Pulsar Heavy Duty Portable Dual Fuel Generator
Lastly, we will talk about yet another highly powerful option for a whole house generator suitable for large households. This option is designed by Pulsar, a versatile brand that deals with a wide range of products.
Finishing off our picks, we have the Pulsar G12KBN, yet another highly powerful whole house generator designed for heavy applications. This generator is capable of offering up to 12000 watts peak power output whereas the running output for this unit goes up to 9500 watts. You will also get a dual fuel option with the Pulsar G12KBN, allowing you to choose either gasoline or LPG to power this generator. The 8-gallon fuel tank on this generator surely offers a long performance, ranging up to 12 hours at a time without needing a refill.
As for the engine, there is a 457 CC 4-stroke gas engine powering the Pulsar G12KBN, making it one of the most powerful options on this list. But still, it is a portable and mobile generator thanks to the 10 inches never-flat wheels provided on this chassis that help with mobility. Coming to the outlets, the Pulsar G12KBN offers 4 standard 120 volts 20A AC outlets, one 120/240 volts 30A twist-lock outlet, and one 120/240 volts 50A outlet for heavier applications. Additionally, you will also find a 12 volts DC outlet on the Pulsar G12KBN that you can use for special applications requiring a DC plug.
Specifications:
- Wattage: 12000 watts
- Fuel Type: Gasoline/Propane
- Item Weight: 0.01 Ounces
- Voltage: 120-240 volts
- Engine Type: 4 Stroke
Pros:
- One of the most powerful engines powering this generator
- Dual fuel option
- Suitable for professional applications
Cons:
- The warranty period is very short
6. A-iPower Whole House Generator
A-iPower SUA12000E Generator is a strong and dependable power solution made to fulfill all your different energy requirements. The generator runs at 60 cycles per second (Hz) and gives off 12,000 watts when starting and 9,000 watts while running. It produces power at 120 volts. It is perfect for work sites, camping and keeping your home safe during emergencies.
Inside, it has a reliable 459cc engine that is perfect for performance. It comes with a low oil alert and automatic shutdown. This generator has a big 7-gallon tank and it can keep running for 9 hours when it is halfway used. So, it gives you power for a long time. It includes standard outlets and even a USB port for your devices. The engine runs on regular gasoline, starts with the push of a button and has a fuel tank capacity of 7 gallons. The engine works in four steps and has a size of 459 cubic centimetres. It can keep giving power for 7 hours nonstop. It is equipped with an electric start for easy operation and comes with a manual.
Specifications:
- Wattage: 9000 watts
- Fuel Type: Electric
- Item Weight: 206 pounds
- Voltage: 120 volts
- Output wattage: 12000 watts
- Engine Type: 4 Stroke
Pros:
- Handles heavy tools and appliances.
- Ideal for camping and emergencies.
- Quick and easy operation.
- Accommodates different power needs.
Cons:
- Breaker is too small.
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.
Frequently Asked Questions
Ans: The answer to this question completely depends upon the average power consumption of all of your electronic household appliances. If you have a lot of electronic appliances that you wish to power with the generator, you will need a high-power output generator. If you want a basic idea, a standard U.S. home needs 5000 to 7500 watts generators to power critical household appliances. But, if you include more appliances in the list, the required power output from the generator also increases. Therefore, a lot of users go with 10000 or 12000 watts generators to be on the safe side.
Ans: There have been a lot of studies that standard whole house generators are around 99% reliable for general purpose usage. As for the generators themselves, they are a bit more prone to damage compared to electrical inverters. As you can see, generators have a gas engine powering the unit. So while they are operational, there are chances of common wear and tear. Plus, these generators also need frequent maintenance if you wish to prolong their lifespan.
Ans: Installing a whole house generator is certainly not an easy task. We will strongly recommend you do not attempt this task if you don’t have any prior experience. Installing a generator in your house includes electrical wiring, plumbing, and even carpentry if some adjustments need to be made at the installation location. So, for safety reasons, you should always hire a professional to install a whole house generator. If not, you should at least consult one to get the best suggestions.
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.
