Contents
- The Top 8
- Top 8 Whole House Generators Reviewed in Detail
- 1. Best Overall
- 2. Best Premium
- 3. Best Value
- 4. Best Design
- 5. Best for Beginners
- 6. Most Versatile
- 7. Runner-Up
- 8. Best Budget
- Whole House Generators Compared Side by Side
- How We Reviewed
- How to Choose Whole House Generators
- What to look for
- Frequently asked questions
Choosing the cheapest whole house generator can be tough. The Generac 22kW Whole Home Generator is the best overall option. It provides whole house protection and automatically detects power outages. The Westinghouse 14500 Peak Watt Tri-Fuel Generator offers solid value. You give up some power capacity to save money with this model.
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The Top 8
Top 8 Whole House Generators Reviewed in Detail
Here, we review the top whole house generators to help you make a smart choice.
1. Best Overall
Generac 22kW Whole Home Generator, Transfer Switch & Cellular Capability
- Whole House Protection: Keep your family comfortable and connected during power outages. Avoid the disruption of losing refrigeration, heating/cooling, lights and connectivity of your devices with a Home Standby Generator that automatically detects an outage and delivers backup power to your home.
- Lowest Total Cost Of Ownership: Electronic fuel & ignition control optimizes fuel use for a more cost-efficient and lower emission back-up power solution* and financing options that offer you solutions that meet your budget *On average versus Generac Guardian Series standby generators
- Remote Monitoring & Control: Built-in Cellular Connectivity allows you to monitor performance and control your generator with Mobile Link app whether you’re home or away. Provides real-time updates and maintenance alerts right on your device.* *Requires Mobile Link premium subscription
- Superior Reliability: Oil level sensors monitor oil level to help ensure generator readiness, support in cold climates with improved cold start performance and sloped roof & rear intake to reduce risk of ice or snow intrusion
- Long Term Assurance: Every Generac Standby Generator comes with a 5-year limited warranty and 24/7/365 customer support
The Generac 22kW Whole Home Generator is a top choice for its power capacity and reliability. With the ability to automatically detect outages, it provides smooth backup power for your home. This model supports essential appliances like refrigerators and heating systems during emergencies. Compared to others, it offers the highest capacity, making it suitable for larger homes. Its automatic features enhance convenience, especially during power outages. A limitation is its initial installation cost, which may deter some buyers who have budget constraints. However, its performance justifies the investment for many homeowners.
Pros
- Provides 22,000 watts of backup power.
- Automatically detects outages for instant response.
- Supports essential home appliances during emergencies.
Cons
- Higher upfront cost compared to portables.
- Requires professional installation.
- Not as portable as smaller models.
Best for: homeowners needing reliable power during outages. Not ideal for: those with limited installation budgets.
A strong choice for whole home protection.
2. Best Premium
Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered
- Perfect as a backup power source for larger homes or a dependable source of portable power
- 14,500 peak watts, 11,500 running watts (gasoline); 13,500 peak watts, 10,500 running watts (propane); 12,000 peak watts, 9,500 running watts (natural gas)
- Powered by a heavy duty 550cc 4-Stroke OHV Westinghouse Engine constructed with a durable cast iron sleeve; Runs for up to 19 hours on a 9.5 gal. fuel tank with built-in fuel gauge; up to 7 hours on a 20 lb. propane tank
- Engineered with low THD, so it’s safe for sensitive electronics. Power phones, computers, TVs and more. Stay connected with people, news and entertainment during power outages, or on jobsites and campsites. Durable copper windings help your generator produce cleaner power, run cooler and last longer
- All Westinghouse portable generators are gunctionally tested in the factory and may contain minimum residual oil and/or fuel odor; EPA compliant; Backed by 3-Year limited service, labor, and parts coverage and Nationwide Customer Service Network
The Westinghouse 14500 Peak Watt Tri-Fuel Generator is a versatile option for larger homes. It offers up to 14,500 peak watts, making it capable of handling various power needs. This model also supports three fuel types: gasoline, propane, and natural gas. Compared to the Generac models, it provides less power but is more portable. This is useful if you need power for outdoor events or job sites. A limitation is that while it offers flexibility, its lower capacity may not support all home appliances during an outage.
Pros
- Supports gasoline, propane, and natural gas.
- 14,500 peak watts for substantial power.
- Remote electric start for convenience.
Cons
- Lower capacity than fixed generators.
- Less suitable for larger homes.
- Can be noisy compared to quieter models.
Best for: users seeking flexible fuel options. Not ideal for: homeowners needing high continuous power.
A versatile generator for various situations.
3. Best Value
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
- 9500 Running Watts and 12500 Peak Watts (Gasoline); 8500 Running Watts, 11200 Peak Watts (Propane); Remote Start with Included Key Fob, Electric and Recoil Start; Up to 12 Hours of Run Time on a 6. 6 Gallon Fuel Tank with Fuel Gauge
- Features Two GFCI 120V 5–20R 20A Standard Household Receptacle, One Transfer Switch Ready 120V L14-30R 30A, and One RV Ready 120/240V 14–50R 50A; All Outlets Have Rubber Covers for Added Safety
- Powered by a Heavy Duty 457cc Westinghouse 4-Stroke OHV Engine Featuring a Long-Lasting Cast Iron Sleeve with Automatic Low Oil Shutdown and Digital Hour Meter. VFT display gives you real time updates with the voltage output, frequency, and lifetime hours
- Plug-and-Play: Comes with a Remote Start Key Fob, 12V Battery Charger, Oil, an Oil Funnel, a Tool Kit, and a User’s Manual to Get You Started Right Out of the Box (Minimal Assembly Required)
- All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA Compliant; Backed By 3-Year Limited Service, Labor, and Parts Coverage and Nationwide Customer Service Network
The Westinghouse 12500 Watt Dual Fuel Generator is a solid choice for value. It offers up to 12,500 peak watts, sufficient for essential home needs. This model features remote start capabilities and is easy to operate. Compared to other options, it balances affordability with decent power. While not as powerful as the Generac models, it still meets basic needs during outages. However, its run time is shorter than some competing generators, which could be a drawback for extended outages. Thus, it’s best for those with lighter power requirements.
Pros
- Remote electric start for easy operation.
- Dual fuel capability for added versatility.
- Up to 12,500 watts of peak power.
Cons
- Lower power output than higher-end models.
- Shorter run time on a full tank.
- May struggle with larger appliances.
Best for: budget-conscious buyers needing essential power. Not ideal for: larger homes with high power demands.
A reliable choice without breaking the bank.
4. Best Design
Generac 22kW Whole Home Generator, Cellular Capability
- Whole House Protection: Keep your family comfortable and connected during power outages. Avoid the disruption of losing refrigeration, heating/cooling, lights and connectivity of your devices with a Home Standby Generator that automatically detects an outage and delivers backup power to your home.
- Lowest Total Cost Of Ownership: Electronic fuel & ignition control optimizes fuel use for a more cost-efficient and lower emission back-up power solution* and financing options that offer you solutions that meet your budget *On average versus Generac Guardian Series standby generators
- Remote Monitoring & Control: Built-in Cellular Connectivity allows you to monitor performance and control your generator with Mobile Link app whether you’re home or away. Provides real-time updates and maintenance alerts right on your device.* *Requires Mobile Link premium subscription
- Superior Reliability: Oil level sensors monitor oil level to help ensure generator readiness, support in cold climates with improved cold start performance and sloped roof & rear intake to reduce risk of ice or snow intrusion
- Long Term Assurance: Every Generac Standby Generator comes with a 5-year limited warranty and 24/7/365 customer support
The Generac 22kW Whole Home Generator with Cellular Capability is designed for ease of use. It automatically provides backup power during outages, keeping your home connected. This model is similar to the best overall pick, offering the same power capacity. The additional cellular capability allows you to monitor the generator remotely. However, like the first option, it requires professional installation, which can increase overall costs. It’s best for homeowners looking for both power and convenience.
Pros
- 22,000 watts for whole home support.
- Cellular monitoring for convenience.
- Smooth automatic operation.
Cons
- Professional installation needed.
- Higher initial investment.
- Not portable; fixed location only.
Best for: tech-savvy homeowners wanting remote access. Not ideal for: renters or those needing portable solutions.
A convenient option with added technology.
5. Best for Beginners
Generac 24kW Whole Home Generator, Transfer Switch & Cellular Capability
- Whole House Protection: Keep your family comfortable and connected during power outages. Avoid the disruption of losing refrigeration, heating/cooling, lights and connectivity of your devices with a Home Standby Generator that automatically detects an outage and delivers backup power to your home.
- Lowest Total Cost Of Ownership: Electronic fuel & ignition control optimizes fuel use for a more cost-efficient and lower emission back-up power solution* and financing options that offer you solutions that meet your budget *On average versus Generac Guardian Series standby generators
- Remote Monitoring & Control: Built-in Cellular Connectivity allows you to monitor performance and control your generator with Mobile Link app whether you’re home or away. Provides real-time updates and maintenance alerts right on your device.* *Requires Mobile Link premium subscription
- Superior Reliability: Oil level sensors monitor oil level to help ensure generator readiness, support in cold climates with improved cold start performance and sloped roof & rear intake to reduce risk of ice or snow intrusion
- Long Term Assurance: Every Generac Standby Generator comes with a 5-year limited warranty and 24/7/365 customer support
The Generac 24kW Whole Home Generator offers significant power and efficiency. With a higher wattage, it can handle multiple essential appliances during outages. It features automatic detection for smooth operation. Compared to other models, it excels in power output. This makes it a strong option for high-demand households. However, its size and installation requirements may be challenging for some. This generator is not recommended for those with limited installation space.
Pros
- Offers 24,000 watts for larger homes.
- Automatic power detection for ease of use.
- High efficiency during operation.
Cons
- Requires professional installation.
- May take up more space than smaller models.
- Higher initial costs.
Best for: larger homes with high power needs. Not ideal for: small homes or those with limited space.
An excellent choice for high-demand users.
6. Most Versatile
DuroStar DS13000MX 13,000-Watt 500cc Dual Fuel Portable Generator – Gas and Propane, Remote Electric Start, Whole Home Power Backup, Transfer Switch Ready,…
- 13,000 Watts of Reliable Power for Home Power Backup – Keep your home, job site, or RV powered during storms and outages with dual fuel capability and a heavy-duty build.
- Dual Fuel Technology – Gasoline or Propane – Choose between gasoline for maximum power or propane for longer run times and cleaner emissions, ensuring fuel flexibility in any emergency.
- CO Alert for Enhanced Safety – Advanced carbon monoxide detection automatically shuts down the generator if dangerous levels are detected, protecting your family from harmful fumes.
- Push-Button Electric Start & Intuitive Control Panel – Easily start your generator with the push of a button, and quickly switch fuel types using the front-facing fuel selector.
- Transfer Switch-Ready with 50-Amp Outlet – Power your entire home by connecting directly to a transfer switch, thanks to the 50A heavy-duty outlet.
- Rugged All-Metal Construction – Built to Last – Designed with a durable steel frame and reinforced power panel, this generator withstands harsh weather and heavy use for years of reliable performance.
The DuroStar DS13000MX is a portable option with dual fuel capability. It provides 13,000 watts of power, suitable for home backup and job sites. This model offers flexibility between gasoline and propane for fuel. Compared to the fixed generators, it is more versatile and easier to transport. However, its power output is less than some competitors, which may limit its use for larger homes. This is best for those who need a mobile generator.
Pros
- Dual fuel capability for flexibility.
- 13,000 watts for reliable backup power.
- Portable design for easy transport.
Cons
- Lower wattage may not support big appliances.
- Less suitable for whole home backup.
- Can be noisy during operation.
Best for: users who need a portable solution. Not ideal for: larger homes requiring consistent power.
A versatile option for various needs.
7. Runner-Up
Generac 14kW Whole Home Generator, Transfer Switch & Cellular Capability
- Whole House Protection: Keep your family comfortable and connected during power outages. Avoid the disruption of losing refrigeration, heating/cooling, lights and connectivity of your devices with a Home Standby Generator that automatically detects an outage and delivers backup power to your home.
- Lowest Total Cost Of Ownership: Electronic fuel & ignition control optimizes fuel use for a more cost-efficient and lower emission back-up power solution* and financing options that offer you solutions that meet your budget *On average versus Generac Guardian Series standby generators
- Remote Monitoring & Control: Built-in Cellular Connectivity allows you to monitor performance and control your generator with Mobile Link app whether you’re home or away. Provides real-time updates and maintenance alerts right on your device.* *Requires Mobile Link premium subscription
- Superior Reliability: Oil level sensors monitor oil level to help ensure generator readiness, support in cold climates with improved cold start performance and sloped roof & rear intake to reduce risk of ice or snow intrusion
- Compatible with the Generac Home Energy Ecosystem: Compatible with ecobee by Generac thermostats and Generac PWRcell battery systems to seamlessly monitor & control your home’s energy. Reviews on this project may contain feedback based on the 14 kW Generac Guardian Home Standby Generator.
The Generac 14kW Whole Home Generator is a reliable backup power source. Providing 14,000 watts, it’s suitable for smaller homes. It features automatic operation, keeping your home powered during outages. Compared to higher capacity models, it may lack some power but is great for essential needs. While it performs well, its limitations in wattage may not meet the needs of larger households. This model is best for smaller homes or those with basic requirements.
Pros
- 14,000 watts for essential power needs.
- Automatic operation for convenience.
- Compact design for smaller spaces.
Cons
- Lower power output compared to larger models.
- Not suitable for high-demand appliances.
- Limited fuel type options.
Best for: smaller homes needing basic power support. Not ideal for: larger homes with higher electricity needs.
A good choice for those with limited requirements.
8. Best Budget
Generac 26kW Whole Home Generator, Cellular Capability
- Whole House Protection: Keep your family comfortable and connected during power outages. Avoid the disruption of losing refrigeration, heating/cooling, lights and connectivity of your devices with a Home Standby Generator that automatically detects an outage and delivers backup power to your home.
- Lowest Total Cost Of Ownership: Electronic fuel & ignition control optimizes fuel use for a more cost-efficient and lower emission back-up power solution* and financing options that offer you solutions that meet your budget *On average versus Generac Guardian Series standby generators
- Remote Monitoring & Control: Built-in Cellular Connectivity allows you to monitor performance and control your generator with Mobile Link app whether you’re home or away. Provides real-time updates and maintenance alerts right on your device.* *Requires Mobile Link premium subscription
- Superior Reliability: Oil level sensors monitor oil level to help ensure generator readiness, support in cold climates with improved cold start performance and sloped roof & rear intake to reduce risk of ice or snow intrusion
- Long Term Assurance: Every Generac Standby Generator comes with a 5-year limited warranty and 24/7/365 customer support
The Generac 26kW Whole Home Generator is a powerful option for whole house coverage. With 26,000 watts, it can handle multiple large appliances simultaneously. This model features automatic detection for quick response during outages. Compared to others, it provides the highest power capacity, making it ideal for larger homes. However, its size and installation can be challenging for some buyers. It’s best suited for those who need maximum power for their household.
Pros
- 26,000 watts for extensive power needs.
- Automatic start during outages.
- Supports multiple appliances simultaneously.
Cons
- Requires significant installation space.
- Higher costs associated with installation.
- Not portable; fixed generator.
Best for: large homes with high power demands. Not ideal for: smaller spaces or budget-conscious buyers.
A powerful generator for extensive household needs.
Whole House Generators Compared Side by Side
The table below compares the best whole house generators. It shows key specs like power output and fuel type. You can use this information to find the cheapest whole house generator for your needs.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Generac 22kW Whole Home Generator | Best Overall | Generac | $6506.1 | Check |
| 2 | Westinghouse 14500 Peak Watt Tri-Fuel Home Backup… | Best Premium | Westinghouse Outdoor Power Equipment | $1499 | Check |
| 3 | Westinghouse 12500 Watt Dual Fuel Home Backup Portable… | Best Value | Westinghouse | $999 | Check |
| 4 | Generac 22kW Whole Home Generator | Best Design | Generac | $5570.1 | Check |
| 5 | Generac 24kW Whole Home Generator | Best for Beginners | Generac | $6875.1 | Check |
| 6 | DuroStar DS13000MX 13,000-Watt 500cc Dual Fuel Portable… | Most Versatile | DuroStar | $899 | Check |
| 7 | Generac 14kW Whole Home Generator | Runner-Up | Generac | $5255 | Check |
| 8 | Generac 26kW Whole Home Generator | Best Budget | Generac | $6317.1 | Check |
| 9 | Westinghouse 13500 Peak Watt Tri-Fuel Home Backup… | — | Westinghouse Outdoor Power Equipment | $1249 | Check |
| 10 | Westinghouse 28000 Peak Watt Tri-Fuel Home Backup… | — | Westinghouse Outdoor Power Equipment | $3899 | Check |
Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.
How We Reviewed
Where our data comes from
We gathered information from manufacturer specifications, customer reviews, and expert articles. Sources include product websites and user feedback on popular retail sites. This gave us a broad view of what these generators offer.
How we built this shortlist
We looked at over 20 models before narrowing it down to eight. We focused on features like power output, fuel type, and overall durability. Each model was assessed for its ability to provide reliable backup power.
What we ruled out and why
Any generator without transfer switch readiness was removed from our list. We also excluded models with significantly lower power outputs. This ensures that our picks are capable of supporting a whole house.
What we did not do
We did not test any generators by hand or conduct lab measurements. No scores were invented based on personal experiences. Our review relies solely on available data and expert reviews.
How often this page is updated
This page will be updated every three months. We will refresh the information to reflect changes in availability or new product releases. Keeping the data current ensures you have the best choices.
How to Choose Whole House Generators
Power Output
When selecting a generator, focus on its power output. Look for models that provide between 10,000 and 26,000 watts. This range typically covers the needs of most homes.
Fuel Type
Consider which fuel type you prefer. Generators can run on gasoline, propane, or natural gas. Dual fuel models offer flexibility, allowing you to choose the most convenient option.
Transfer Switch Compatibility
Check if the generator is transfer switch ready. This feature is important for safely connecting your generator to your home’s electrical system. It makes the setup easier and safer.
Run Time
Look for generators that offer a long run time on a full tank. Models that run for 10 to 12 hours are more convenient during outages. This means less frequent refueling.
Portability
If you need a generator for various applications, consider portability. Some models are designed to be easily moved. Features like wheels and handles can make a big difference.
What to look for
Power Capacity
Power capacity is key when choosing a generator. Whole house generators typically range from 10,000 to 26,000 watts. This range is suitable for most homes. Higher wattage ensures you can run essential appliances during an outage.
Fuel Efficiency
Fuel efficiency affects your generator’s run time and operating costs. Look for models that offer longer run times on less fuel. This not only saves you money but also makes maintenance easier.
Noise Levels
Noise levels can be a concern, especially in residential areas. Check the decibel rating of your generator. A rating below 60 decibels is generally quieter and less disruptive.
Automatic Features
Consider if the generator has automatic features. Automatic start capabilities can make it easier during outages. This means the generator turns on as soon as an outage is detected.
Warranty and Support
Look for models that come with a solid warranty. Good customer support is also important. This ensures you get help if you face issues with your generator.
Frequently asked questions
What is the cheapest whole house generator?
The cheapest whole house generator in this roundup is the Westinghouse 12500 Watt Dual Fuel Generator. It offers significant power output while remaining budget-friendly for most users.
How much power do I need for a whole house generator?
Typically, you need between 10,000 and 26,000 watts for a whole house generator. The exact amount depends on the size of your home and the appliances you want to run.
How long can a whole house generator run?
Run time varies by model and fuel type. Most generators can run for 10 to 12 hours on a full tank, depending on the load. Check specifications for exact run times.
Can I run a whole house generator on propane?
Yes, many whole house generators are dual fuel and can run on propane. This offers flexibility and can often provide a cleaner burn than gasoline.
How do I maintain a whole house generator?
Regular maintenance includes checking the oil, replacing filters, and running the generator monthly. Follow the manufacturer’s guidelines for specific maintenance tasks and intervals.
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