Home standby generators vary most in how much of your home they can power, how they connect to your electrical system, and whether they run on one fuel or several. I rank the Generac 18 kW with transfer switch as the best overall because its output and included switching equipment offer a balanced starting point for whole-home backup. The Generac 10 kW with transfer switch suits buyers prioritizing a smaller essential-circuits setup, while the Westinghouse tri-fuel portable generator gives fuel flexibility without a permanent standby installation. Higher-output Generac models offer more capacity, but they bring different sizing, installation, and fuel-use demands; portable models require manual setup during an outage. Read on for the full breakdown, buying advice, and answers to common sizing questions.
Get backup power and energy gear delivered free — and shop member deals
- Fast, free delivery on millions of items
- Access to Prime Big Deal Days deals on October 6–7
- Prime Video, Amazon Music and more included
Complete the kit
Key Takeaways
The 18 kW Generac with a transfer switch is my best overall pick: it balances capacity with included switching hardware, while the similar 18 kW model without a listed switch may require buyers to plan for that equipment separately.
Output alone does not determine the best fit. The 10 kW and 14 kW Generac models are better candidates for a deliberately limited load plan than the 24 kW to 28 kW options, which target homes with greater simultaneous demand.
Transfer switch inclusion separates several near-matches. Across the 14 kW, 22 kW, and 26 kW Generac options, compare the switch configuration before choosing between products with similar stated capacity.
Portable models trade automation for fuel choice and mobility. The Westinghouse tri-fuel model stands out for fuel flexibility, while the dual-fuel Westinghouse and DuroStar options suit buyers willing to connect equipment and manage backup power manually.
The lineup is weighted toward Generac standby units. That gives buyers many capacity steps, but it makes the Westinghouse and DuroStar portables the clearest alternatives for homes where a permanent installation is not the preferred setup.
| Generac 18 kW Whole-Home Standby Generator with Cellular Connectivity |  | Best Connected Midrange Standby | Power output: 18 kW | Type: Whole-home standby generator | Connectivity: Built-in cellular | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 24 kW Whole Home Standby Generator with Transfer Switch and Cellular Connectivity |  | Best for Larger Backup Loads | Power output: 24 kW | Type: Whole-home standby generator | Transfer switch: Included | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse 14,500-Watt Dual-Fuel Portable Home Backup Generator |  | Best Portable Dual-Fuel Backup | Fuel types: Gasoline and propane | Peak output on gasoline: 14,500 watts | Running output on gasoline: 11,500 watts | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 14 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity | | Best Lower-Capacity Standby | Power output: 14 kW | Type: Whole-home standby generator | Transfer switch: Included | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 26 kW Whole Home Standby Generator with Cellular Connectivity |  | Best Highest-Capacity Pick | Power output: 26 kW | Type: Whole-home standby generator | Connectivity: Built-in cellular | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 14 kW Whole-Home Standby Generator with Cellular Connectivity | | Best for Connected Mid-Size Backup | Power output: 14 kW | Generator type: Home standby | Connectivity: Built-in cellular | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 10 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity |  | Best for Smaller Standby Needs | Power output: 10 kW | Fuel type: LP or natural gas | Connectivity: Built-in cellular | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse 14,500-Watt Tri-Fuel Portable Home Backup Generator |  | Best Portable Fuel Flexibility | Fuel types: Gasoline, propane, natural gas | Peak output: 14,500 watts on gasoline; 13,500 watts on propane; 12,000 watts on natural gas | Running output: 11,500 watts on gasoline; 10,500 watts on propane; 9,500 watts on natural gas | VIEW LATEST PRICE | See Our Full Breakdown |
| DuroStar DS13000MX 13,000-Watt Dual-Fuel Portable Generator |  | Best Portable Transfer-Switch Connection | Model: DS13000MX | Power output: 13,000 watts | Engine displacement: 500cc | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 18 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity |  | Best Higher-Capacity Standby Package | Power output: 18 kW | Generator type: Whole-home standby generator | Connectivity: Built-in cellular | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 28kW Whole-Home Standby Generator with Cellular Connectivity | | Best for Maximum Backup Capacity | Power output: 28 kW | Fuel: LP or natural gas | Connectivity: Built-in cellular | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 22kW Whole Home Standby Generator with Cellular Connectivity | | Best for a Straightforward Standby Setup | Power output: 22 kW | Type: Whole-home standby generator | Connectivity: Built-in cellular | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 22 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity | | Best 22 kW Package with Transfer Switch | Power output: 22 kW | Type: Whole-home standby generator | Transfer switch: Included | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse WGen9500DF Dual Fuel Portable Generator, 12,500 Peak Watts |  | Best Portable Alternative to a Standby System | Model: WGen9500DF | Fuel: Gasoline or propane | Running watts: 9,500 W gasoline; 8,500 W propane | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 26kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity | | Best High-Capacity Package with Transfer Switch | Power output: 26 kW | Type: Whole-home standby generator | Transfer switch: Included | VIEW LATEST PRICE | See Our Full Breakdown |
| home standby generator | Power output | Connectivity | Warranty |
|---|---|---|---|
| Generac 18 kW Whole-Home Stand | 18 kW | Built-in cellular | — |
| Generac 24 kW Whole Home Stand | 24 kW | Built-in cellular | 5-year limited warranty |
| Westinghouse 14,500-Watt Dual- | — | — | — |
| Generac 14 kW Whole-Home Stand | 14 kW | Built-in cellular | — |
| Generac 26 kW Whole Home Stand | 26 kW | Built-in cellular | 5-year limited warranty |
| Generac 14 kW Whole-Home Stand | 14 kW | Built-in cellular | — |
| Generac 10 kW Whole-Home Stand | 10 kW | Built-in cellular | 5-year limited warranty |
| Westinghouse 14,500-Watt Tri-F | — | — | 3-year limited service, labor, and parts coverage |
| DuroStar DS13000MX 13,000-Watt | 13,000 watts | — | — |
| Generac 18 kW Whole-Home Stand | 18 kW | Built-in cellular | — |
| Generac 28kW Whole-Home Standb | 28 kW | Built-in cellular | 5-year limited warranty |
| Generac 22kW Whole Home Standb | 22 kW | Built-in cellular | 5-year limited |
| Generac 22 kW Whole-Home Stand | 22 kW | Built-in cellular | 5-year limited warranty |
| Westinghouse WGen9500DF Dual F | — | — | 3-year limited warranty |
| Generac 26kW Whole-Home Standb | 26 kW | Built-in cellular | 5-year limited warranty |
More Details on Our Top Picks
Generac 18 kW Whole-Home Standby Generator with Cellular Connectivity
The 18 kW output gives this Generac a middle-ground role: more capacity than the 14 kW model, without stepping up to the 24 kW or 26 kW options. It automatically detects outages, so it suits households looking for installed, automatic backup rather than a portable unit that needs to be started and connected. Built-in cellular connectivity supports remote monitoring and control through Mobile Link, useful when you’re away from home, though real-time updates and maintenance alerts require a premium subscription. Oil-level sensors and improved cold-start performance support readiness, while ecobee and PWRcell compatibility may appeal to owners building around Generac equipment. The product details don’t specify runtime, fuel capacity, or installation requirements, so I’d compare those with a qualified installer before choosing it over a higher-output model.
Pros:- Automatically detects outages and supplies standby power
- 18 kW output sits between the listed 14 kW and 24 kW Generac models
- Built-in cellular supports remote monitoring and control
- Oil-level sensors and cold-start improvements support readiness
Cons:- Real-time updates and maintenance alerts require a premium Mobile Link subscription
- Product details omit runtime, fuel capacity, and installation requirements
Best for: Homeowners who want automatic outage response, app monitoring, and more capacity than the 14 kW Generac offers
Not ideal for: Households with larger backup loads that may need the 24 kW or 26 kW models, or buyers who don’t want a paid subscription for real-time app alerts
- Power output:18 kW
- Type:Whole-home standby generator
- Connectivity:Built-in cellular
- Remote monitoring:Generac Mobile Link app; premium subscription required for real-time updates and maintenance alerts
- Compatibility:ecobee by Generac thermostats and Generac PWRcell battery systems
- Readiness features:Electronic fuel and ignition control, oil-level sensors, and improved cold-start performance
- Enclosure design:Sloped roof and rear intake
Our verdict“Choose this 18 kW Generac if you want automatic, connected backup and don’t need the higher stated capacity of the 24 kW or 26 kW models.”
Generac 24 kW Whole Home Standby Generator with Transfer Switch and Cellular Connectivity
At 24 kW, this model is aimed at homes whose backup needs exceed what the 14 kW and 18 kW Generac options are specified to provide. Automatic outage detection makes it a standby choice rather than a portable generator you set up when the power fails, and the included transfer switch is part of the package. Cellular access to the Mobile Link app adds remote monitoring and control, though the listing says a premium subscription is required. Oil-level sensors and cold-start support address readiness, and the 5-year limited warranty plus 24/7/365 support provide useful ownership provisions. The 26 kW Generac offers still more stated output, so buyers with especially large loads should compare requirements with an installer; this model’s description also leaves fuel and runtime details unspecified.
Pros:- 24 kW output exceeds the listed 14 kW and 18 kW Generac models
- Transfer switch is included
- Automatic outage detection and cellular app access
- Includes a 5-year limited warranty and 24/7/365 customer support
Cons:- Mobile Link premium subscription is required for remote monitoring features
- Description does not specify fuel capacity, runtime, or installation requirements
Best for: Homeowners with larger backup loads who want a 24 kW automatic standby system with a transfer switch included
Not ideal for: Homes with modest backup needs that may be served by the 14 kW or 18 kW models, or buyers seeking detailed runtime and fuel information before shortlisting
- Power output:24 kW
- Type:Whole-home standby generator
- Transfer switch:Included
- Connectivity:Built-in cellular
- Remote monitoring:Mobile Link app; premium subscription required
- Readiness features:Fuel and ignition controls, oil-level sensors, and cold-start support
- Warranty:5-year limited warranty
- Customer support:24/7/365
Our verdict“Pick this 24 kW Generac when your household needs more stated capacity than the 14 kW and 18 kW options and you want the transfer switch included.”
Westinghouse 14,500-Watt Dual-Fuel Portable Home Backup Generator
This Westinghouse is the lineup’s portable alternative to automatic standby models such as the Generac 14 kW: it can supply substantial backup power, but it doesn’t offer the listed automatic outage response of those installed systems. Its dual-fuel setup lets you choose gasoline or propane, and remote electric start reduces the effort of starting it at the unit. Running output is 11,500 watts on gasoline or 10,500 watts on propane, so those figures are more useful for planning sustained loads than peak wattage alone. Low-THD power is suited to sensitive electronics. Gasoline runtime is listed at up to 19 hours, while a 20 lb. propane tank is listed for up to 7 hours; actual gasoline runtime depends on load. Compared with the standby Generacs, this offers fuel choice and portability at the cost of automatic backup.
Pros:- Runs on gasoline or propane
- Running output reaches 11,500 watts on gasoline
- Remote electric start and transfer-switch readiness
- Low-THD output is suitable for sensitive electronics
Cons:- Does not provide the listed automatic outage response of the Generac standby models
- Propane runtime is listed at up to 7 hours on a 20 lb. tank
- Gasoline runtime varies with electrical load
Best for: Homeowners who want a portable backup source with gasoline and propane options, remote electric start, and transfer-switch readiness
Not ideal for: People who need a permanently installed generator to detect outages and restore power automatically
- Fuel types:Gasoline and propane
- Peak output on gasoline:14,500 watts
- Running output on gasoline:11,500 watts
- Peak output on propane:13,500 watts
- Running output on propane:10,500 watts
- Gasoline tank capacity:9.5 gallons
- Runtime:Up to 19 hours on gasoline; up to 7 hours on a 20 lb. propane tank
- Engine:550cc 4-stroke OHV with cast iron sleeve
- Power quality:Low THD
Our verdict“Choose this Westinghouse if portability and dual-fuel flexibility matter more than the automatic operation of a Generac standby system.”
Generac 14 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity
The 14 kW capacity gives this model a defined place below the 18 kW and 24 kW Generac options: it suits buyers planning backup for a more limited set of household needs, rather than seeking the greatest stated output here. It automatically detects outages, and the transfer switch is included, making this a more complete standby package in the listing than the 18 kW model. Built-in cellular connectivity supports app monitoring and control, but real-time updates and maintenance alerts require a premium Mobile Link subscription. Oil-level sensors and cold-weather design details, including a sloped roof and rear intake, support readiness in poor weather. It also works with ecobee by Generac thermostats and PWRcell batteries. Buyers should check their load plan with an installer; the 18 kW option offers more capacity if the 14 kW ceiling is too tight.
Pros:- Automatically detects outages and supplies standby power
- Transfer switch is included
- Cellular connectivity supports app monitoring and control
- Cold-weather design features and compatibility with ecobee and PWRcell products
Cons:- Real-time updates and maintenance alerts require a premium Mobile Link subscription
- 14 kW provides less stated capacity than the 18 kW and 24 kW Generac options
Best for: Homeowners seeking a lower-capacity automatic standby system with a transfer switch included and compatible Generac energy products
Not ideal for: Households that need more backup capacity than 14 kW, or owners who don’t want to pay for premium app alerts
- Power output:14 kW
- Type:Whole-home standby generator
- Transfer switch:Included
- Connectivity:Built-in cellular
- Remote monitoring:Mobile Link app; premium subscription required for real-time updates and maintenance alerts
- Cold-weather features:Improved cold-start performance; sloped roof and rear intake designed to reduce ice or snow intrusion
- Compatibility:ecobee by Generac thermostats and Generac PWRcell battery systems
Our verdict“Choose this 14 kW model for automatic standby backup with an included transfer switch when the higher capacity of the 18 kW and 24 kW versions is unnecessary.”
Generac 26 kW Whole Home Standby Generator with Cellular Connectivity
With 26 kW of stated output, this is the highest-capacity product in this batch, ahead of the 24 kW Generac and well above the 14 kW and 18 kW models. That makes it the clearest candidate for homeowners whose planned backup loads call for the most capacity listed here, though an installer still needs to confirm what the home requires. Automatic outage detection supports hands-off standby operation, while built-in cellular connects the generator to Mobile Link for remote monitoring and control. The app’s remote monitoring features require a premium subscription. Oil-level sensors, improved cold-start performance, a sloped roof, and rear intake address readiness and weather exposure; the package also lists a 5-year limited warranty and round-the-clock support. The description does not provide runtime, fuel capacity, or transfer-switch details.
Pros:- Highest stated output among the five products in this batch
- Automatically detects outages and supplies standby power
- Built-in cellular supports remote monitoring and control
- Includes oil-level sensors, cold-start improvements, a 5-year limited warranty, and 24/7/365 support
Cons:- Mobile Link remote monitoring features require a premium subscription
- Description does not specify runtime, fuel capacity, or transfer-switch details
Best for: Homeowners planning substantial backup loads who want the highest stated generator capacity in this batch and cellular monitoring
Not ideal for: Households whose backup plan fits a lower-capacity 14 kW, 18 kW, or 24 kW model, or buyers who need transfer-switch details in the product listing
- Power output:26 kW
- Type:Whole-home standby generator
- Connectivity:Built-in cellular
- Remote monitoring:Mobile Link app; premium subscription required
- Features:Automatic outage detection, oil-level sensors, and improved cold-start performance
- Enclosure design:Sloped roof and rear intake
- Warranty:5-year limited warranty
- Customer support:24/7/365
Our verdict“Choose the 26 kW Generac if your backup plan needs the greatest stated capacity in this batch and you accept subscription-based remote monitoring.”
Generac 14 kW Whole-Home Standby Generator with Cellular Connectivity
Automatic outage response and built-in cellular connectivity make this 14 kW Generac a fit for homeowners who want a permanently installed backup system they can monitor remotely. Compared with the Generac 18 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity, it offers less listed capacity and does not specify an included transfer switch, so buyers should confirm what installation equipment is needed. Its cold-start support and design to reduce snow or ice intrusion suit colder locations, while oil-level sensors help track readiness. The main tradeoff is the Mobile Link premium subscription required for real-time updates and maintenance alerts. I’d rank it below higher-capacity standby options for larger backup needs, but it makes a clearer case for households that can prioritize essential circuits over broader coverage.
Pros:- Automatically detects outages and supplies backup power
- Built-in cellular supports remote monitoring and control
- Cold-start improvements and snow or ice intrusion features support winter readiness
- Oil-level sensors help monitor generator readiness
Cons:- Real-time app updates and maintenance alerts require a premium subscription
- Installation requirements and included accessories are not specified
- 14 kW offers less listed output than the Generac 18 kW standby option
Best for: Homeowners seeking a connected, permanently installed backup system for essential household loads in a cold-weather area
Not ideal for: Households that want broader capacity or a clearly specified included transfer switch, or buyers unwilling to pay for app alerts
- Power output:14 kW
- Generator type:Home standby
- Connectivity:Built-in cellular
- Remote monitoring app:Mobile Link
- App updates and alerts:Real-time updates and maintenance alerts require a premium subscription
- Cold-weather support:Improved cold-start performance
- Compatible systems:ecobee by Generac thermostats and Generac PWRcell battery systems
Our verdict“Choose this Generac if you want connected 14 kW standby backup and can confirm the installation package fits your home.”
Generac 10 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity
This 10 kW standby generator is the lower-capacity choice among the permanently installed Generac models in this batch. It connects to an existing LP or natural gas supply and starts automatically when utility power fails, which suits homeowners who want outage response without handling portable equipment. The listed transfer switch and five-year limited warranty give buyers more concrete package details than the 14 kW Generac, whose included equipment is unspecified. Capacity is the central compromise: compared with the Generac 18 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity, this model provides less output, so it is better suited to a narrower backup plan than a broad household load. Cellular monitoring is useful, but remote features require a Mobile Link premium subscription, and it depends on an existing gas supply.
Pros:- Automatically starts when an outage is detected
- Includes a transfer switch
- Runs from an existing LP or natural gas supply
- Includes a five-year limited warranty and 24/7/365 customer support
Cons:- 10 kW provides less listed output than the 14 kW and 18 kW Generac standby models
- Remote features through Mobile Link require a premium subscription
- Requires an existing LP or natural gas supply
Best for: Homeowners with an LP or natural gas connection who want automatic standby backup for a smaller set of household loads
Not ideal for: Buyers seeking higher backup capacity, fuel flexibility, or remote app features without a subscription
- Power output:10 kW
- Fuel type:LP or natural gas
- Connectivity:Built-in cellular
- Monitoring app:Mobile Link; premium subscription required for remote features
- Included equipment:Transfer switch
- Warranty:5-year limited warranty
- Customer support:24/7/365
Our verdict“Pick this model for automatic, lower-capacity standby coverage when your home already has a compatible gas supply.”
Westinghouse 14,500-Watt Tri-Fuel Portable Home Backup Generator
For buyers who value fuel choice and portable backup over automatic standby operation, this Westinghouse stands apart from the Generac models. It can run on gasoline, propane, or natural gas, with gasoline output listed at 11,500 running watts and lower running output on the other fuels. That range lets an owner adapt to available fuel, while low-THD power is intended for sensitive electronics. Its remote electric start adds convenience, and the 9.5-gallon tank supports up to 19 hours of gasoline runtime. Compared with the Generac 10 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity, it offers tri-fuel flexibility and substantial portable output, but it does not provide the same automatic outage response of a standby system. The large tank and heavy-duty engine also make transport less convenient; propane runtime is up to seven hours on a 20-pound tank.
Pros:- Runs on gasoline, propane, or natural gas
- Provides up to 11,500 running watts on gasoline
- Low-THD output is designed for sensitive electronics
- Gasoline runtime is listed at up to 19 hours
Cons:- Large tank and heavy-duty engine may make transport difficult
- Runtime on a 20-pound propane tank is up to seven hours
- Portable operation does not offer the automatic outage response of the Generac standby models
Best for: Homeowners who want a portable backup unit that can use whichever of gasoline, propane, or natural gas is available
Not ideal for: Buyers who need a permanently installed generator that starts automatically during an outage or who need an easy-to-move unit
- Fuel types:Gasoline, propane, natural gas
- Peak output:14,500 watts on gasoline; 13,500 watts on propane; 12,000 watts on natural gas
- Running output:11,500 watts on gasoline; 10,500 watts on propane; 9,500 watts on natural gas
- Engine:550cc 4-stroke OHV
- Fuel tank capacity:9.5 gallons
- Runtime:Up to 19 hours on gasoline; up to 7 hours on a 20 lb. propane tank
- Starting:Remote electric start
- Power quality:Low THD
- Warranty:3-year limited service, labor, and parts coverage
Our verdict“Choose this Westinghouse if fuel flexibility and portable power matter more to you than automatic standby operation.”
DuroStar DS13000MX 13,000-Watt Dual-Fuel Portable Generator
The DS13000MX is a portable dual-fuel generator with a 50-amp outlet for transfer-switch connection, giving it a practical path to powering a home’s connected circuits. Its gasoline or propane operation offers more fuel flexibility than a single-fuel portable unit, and push-button electric start avoids relying solely on a pull start. Carbon monoxide detection with automatic shutdown adds a useful safety measure during operation. Compared with the Westinghouse 14,500-Watt Tri-Fuel Portable Home Backup Generator, the DuroStar has fewer fuel options and its product data omits runtime and noise level, making fuel planning harder. It also remains a portable machine rather than an automatic standby system like the Generac models. The steel frame and reinforced panel suggest a sturdy build, though they may make moving it a chore.
Pros:- Runs on gasoline or propane
- 50-amp outlet supports transfer-switch connection
- Push-button electric start
- CO detection triggers automatic shutdown
Cons:- Portable operation does not start automatically when utility power fails
- Runtime and noise level are not provided in the product data
- Steel construction may make the unit difficult to move
Best for: Homeowners who want a dual-fuel portable generator with a 50-amp outlet for connection to a transfer switch
Not ideal for: Buyers who need automatic outage startup, tri-fuel operation, or clear runtime and noise specifications before choosing
- Model:DS13000MX
- Power output:13,000 watts
- Engine displacement:500cc
- Fuel type:Gasoline or propane
- Start type:Push-button electric start
- Safety feature:Carbon monoxide detection with automatic shutdown
- Outlet:50-amp
- Construction:Steel frame and reinforced power panel
Our verdict“Choose the DuroStar for transfer-switch-ready portable backup if dual-fuel operation and CO shutdown matter more than automatic standby service.”
Generac 18 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity
This 18 kW standby generator is the strongest fit in this batch for homeowners seeking more listed capacity than the 10 kW and 14 kW Generac options. It detects outages automatically and includes a transfer switch, giving buyers a more fully specified package than the 14 kW model with cellular connectivity. Built-in cellular supports remote monitoring and control through Mobile Link, while oil-level sensors and cold-weather features help with readiness in winter conditions. Compared with the Westinghouse 14,500-Watt Tri-Fuel Portable Home Backup Generator, the Generac favors automatic, permanent backup rather than portability and multiple fuel choices. App real-time updates and maintenance alerts require a premium subscription, and the product data notes that listed review feedback may refer to a different 18 kW Guardian model. I’d favor it for broader household backup where installation and standby operation are priorities.
Pros:- Automatically detects outages and supplies backup power
- Includes a transfer switch
- Built-in cellular enables Mobile Link monitoring and control
- Cold-start improvements and snow or ice intrusion features support winter readiness
Cons:- Real-time app updates and maintenance alerts require a premium subscription
- As a standby generator, it does not offer the portability and fuel selection of the Westinghouse tri-fuel model
- Listed review feedback may refer to a different 18 kW Generac Guardian model
Best for: Homeowners who want a permanently installed, higher-capacity standby system with a listed transfer switch and remote monitoring
Not ideal for: Buyers who need a portable multi-fuel generator or who do not want a subscription for real-time app alerts
- Power output:18 kW
- Generator type:Whole-home standby generator
- Connectivity:Built-in cellular
- Remote monitoring:Mobile Link app; premium subscription required for real-time updates and maintenance alerts
- Compatibility:ecobee by Generac thermostats and Generac PWRcell battery systems
- Included equipment:Transfer switch
Our verdict“Choose this Generac for higher-capacity automatic standby coverage with a listed transfer switch and cellular monitoring.”
Generac 28kW Whole-Home Standby Generator with Cellular Connectivity
The 28 kW output makes this the capacity leader among these five picks, giving it more headroom for households with several major electrical loads than the 22 kW Generac models. It runs on an existing LP or natural gas supply and starts automatically when utility power fails, so it suits owners who want a permanently installed system rather than a portable unit such as the Westinghouse WGen9500DF. Cellular connectivity adds remote monitoring and control, while oil-level sensors and cold-start improvements support readiness. The tradeoff is that the Mobile Link app’s premium features require a subscription, and the generator depends on a compatible fuel supply. Its product information does not list a transfer switch, so buyers should verify what equipment and installation are needed before choosing it.
Pros:- 28 kW output provides the highest stated capacity in this group
- Automatically starts when utility power is lost
- Cellular connectivity supports remote monitoring and control
- Oil-level sensors, cold-start improvements, and a 5-year limited warranty support readiness
Cons:- Requires an existing LP or natural gas supply
- Premium Mobile Link features require a subscription
- Transfer switch and installation details are not specified
Best for: Homeowners with an existing LP or natural gas supply who need more backup capacity than a 22 kW unit offers.
Not ideal for: Buyers seeking a portable generator, a fuel-flexible option, or a package confirmed to include a transfer switch.
- Power output:28 kW
- Fuel:LP or natural gas
- Connectivity:Built-in cellular
- Remote monitoring:Mobile Link app; premium subscription required
- Automatic operation:Starts when utility power is lost
- Readiness features:Oil-level sensors and cold-start improvements
- Warranty:5-year limited warranty
- Customer support:24/7/365
Our verdict“Choose this Generac if your home needs the most stated capacity here and already has a suitable gas supply.”
Generac 22kW Whole Home Standby Generator with Cellular Connectivity
This 22 kW standby model covers the core appeal of a home standby generator: it detects an outage and supplies backup power without requiring someone to roll out and start a portable unit. Built-in cellular connectivity adds remote monitoring and control, while oil-level sensors and cold-start support address two practical parts of readiness. Compared with the 28 kW Generac, it offers less stated output, so homes with heavier simultaneous loads may prefer the higher-capacity model. The listing also describes a sloped roof and rear intake, but does not say a transfer switch is included or specify installation requirements. Buyers should confirm the system configuration for their home. App real-time updates and maintenance alerts require a premium subscription, adding an ongoing requirement for those features.
Pros:- Automatically detects outages and provides standby backup
- Built-in cellular connection supports remote monitoring and control
- Oil-level sensors and cold-start support aid readiness
- Includes a 5-year limited warranty and 24/7 customer support
Cons:- Premium subscription is required for real-time app updates and maintenance alerts
- Transfer switch inclusion and installation requirements are not specified
- Provides less stated output than the 28 kW Generac
Best for: Homeowners looking for an automatic 22 kW standby system who will confirm transfer switch and installation details with their installer.
Not ideal for: Households that need more capacity than 22 kW or buyers who want included transfer-switch equipment clearly specified.
- Power output:22 kW
- Type:Whole-home standby generator
- Connectivity:Built-in cellular
- App:Mobile Link; premium subscription required for real-time updates and maintenance alerts
- Features:Automatic outage detection, oil-level sensors, improved cold-start performance
- Design:Sloped roof and rear intake
- Warranty:5-year limited
- Customer support:24/7
Our verdict“Pick this model for automatic 22 kW standby backup if you are ready to confirm the installation package before buying.”
Generac 22 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity
The clearest difference from the other 22 kW Generac in this batch is right in the package: this model includes a transfer switch. That gives buyers a more defined starting point for an automatic standby installation than the 22 kW model whose listing does not specify the switch. It detects outages, supplies backup power, and adds cellular monitoring and control through Mobile Link. Compared with the 28 kW Generac, its 22 kW output leaves less room for multiple large loads, so capacity planning still matters. Oil-level monitoring, cold-start support, and a five-year limited warranty round out the stated provisions. The app requires a premium subscription, and the product data does not spell out installation requirements or costs, so the included switch does not remove the need to confirm system fit.
Pros:- Transfer switch is included
- Automatically detects outages and supplies backup power
- Cellular connectivity supports remote monitoring and control
- Oil-level monitoring, cold-start support, and a 5-year limited warranty
Cons:- Mobile Link app features require a premium subscription
- Installation requirements and costs are not specified
- 22 kW output is below the 28 kW Generac in this batch
Best for: Homeowners who want a 22 kW automatic standby generator with the transfer switch included in the listed package.
Not ideal for: Homes with high simultaneous power demands or buyers expecting installation requirements and costs to be fully defined.
- Power output:22 kW
- Type:Whole-home standby generator
- Transfer switch:Included
- Connectivity:Built-in cellular
- App:Mobile Link; premium subscription required
- Readiness features:Oil-level monitoring and cold-start support
- Warranty:5-year limited warranty
- Customer support:24/7/365
Our verdict“Choose this 22 kW Generac when an included transfer switch is a priority and its capacity suits your household.”
Westinghouse WGen9500DF Dual Fuel Portable Generator, 12,500 Peak Watts
The WGen9500DF is the lineup’s portable alternative for buyers who want gasoline or propane flexibility and do not need an automatically installed standby system. Its gasoline output is 9,500 running watts, while propane provides 8,500; remote, electric, and recoil starting give several ways to bring it online. The 12-hour stated runtime on its 6.6-gallon gasoline tank can reduce refueling interruptions, though actual runtime will depend on load. Transfer switch and RV-ready outlets broaden where it can connect. Compared with the automatic Generac standby models, this Westinghouse requires the owner to position and operate a portable generator during an outage, and its stated output is far lower than their kilowatt capacities. Minimal assembly is required, and the three-year limited warranty is shorter than the Generac warranties listed here.
Pros:- Runs on gasoline or propane
- Remote, electric, and recoil starting options
- Up to 12 hours of stated runtime on a full gasoline tank
- Includes transfer switch-ready and RV-ready outlets
Cons:- Requires minimal assembly and owner setup during an outage
- 6.6-gallon gasoline tank limits fuel carried onboard
- Lower stated output and shorter warranty than the Generac standby models here
Best for: Homeowners who need a movable backup source, want gasoline and propane options, and can manage setup during outages.
Not ideal for: Buyers who need automatic outage response, higher whole-home capacity, or a permanently installed standby system.
- Model:WGen9500DF
- Fuel:Gasoline or propane
- Running watts:9,500 W gasoline; 8,500 W propane
- Peak watts:12,500 W gasoline; 11,200 W propane
- Engine:457cc 4-stroke OHV
- Gas tank capacity:6.6 gallons
- Runtime:Up to 12 hours
- Starting methods:Remote, electric, and recoil
- Warranty:3-year limited warranty
Our verdict“Choose the WGen9500DF if portability and dual-fuel operation matter more than automatic, higher-capacity standby backup.”
Generac 26kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity
This 26 kW Generac pairs more stated output than the two 22 kW picks with an included transfer switch, making it a strong fit for buyers seeking a higher-capacity standby package. It automatically detects outages and backs household essentials, while cellular connectivity enables remote monitoring and control. Compared with the 28 kW Generac, it gives up 2 kW of stated output but has the transfer switch explicitly included in its listing. Oil-level monitoring, cold-start support, and design features intended to reduce snow and ice intrusion speak to readiness in colder conditions. The product information does not specify fuel type or installation requirements, so buyers need to verify compatibility and site needs. Mobile Link’s premium features also require a subscription.
Pros:- 26 kW output exceeds the two 22 kW Generac models in this batch
- Transfer switch is included
- Automatic outage detection with cellular remote monitoring and control
- Oil-level monitoring, cold-start support, and design features intended to limit snow and ice intrusion
Cons:- Fuel type is not specified
- Installation requirements are not specified
- Premium Mobile Link features require a subscription
Best for: Homeowners who want more stated capacity than a 22 kW standby model and value an included transfer switch.
Not ideal for: Buyers who need confirmed fuel compatibility or installation details before selecting a generator.
- Power output:26 kW
- Type:Whole-home standby generator
- Transfer switch:Included
- Connectivity:Built-in cellular
- Remote monitoring:Mobile Link app; premium subscription required
- Readiness features:Oil-level monitoring and cold-start support
- Weather design:Features intended to reduce snow and ice intrusion
- Warranty:5-year limited warranty
- Customer support:24/7/365
Our verdict“Choose this model if you want 26 kW standby capacity with a transfer switch included and can confirm fuel and installation fit.”
How We Picked
I ranked these products for their usefulness as home outage backup, looking at stated output, standby versus portable operation, listed transfer switch inclusion, and fuel flexibility. For standby units, capacity and the transfer-switch configuration matter together: a higher output can support more demand, while switching hardware affects how the generator connects to household circuits. I treated portable models as a distinct choice because they require a different operating routine and do not offer the automatic response associated with a permanently installed standby system.
The order favors balanced fit and clear setup information over maximum wattage alone. Models with a listed transfer switch receive an edge over similar-capacity listings without one, while the portable picks rank lower for buyers whose priority is unattended whole-home backup. I also considered the practical range of the lineup: smaller standby options can fit a planned essential-load approach, and larger units may suit homes with greater demand, subject to professional load assessment. Product names do not provide details such as noise, warranty, exact fuel consumption, or included installation, so I do not use those as ranking claims.
Factors to Consider When Choosing Home Standby Generators
Choosing among these home standby generators starts with how you want backup power to work during an outage. The product list shows why comparing wattage alone can lead to a poor match: capacity, transfer equipment, fuel arrangements, and installation all shape the real experience. Use these broader questions to narrow the field before settling on a model.
Choose Which Circuits Must Stay On
Write down the loads you expect to run at the same time, such as refrigeration, lighting, heating controls, a well pump, or medical equipment. The appliance nameplate or manual can help identify electrical demand, but motor-driven equipment may draw more power briefly when starting. A common mistake is adding every appliance’s running wattage and assuming that total captures startup needs. Ask a qualified electrician to assess the home’s loads and propose a circuit plan before choosing a unit. If you can accept alternating some heavy appliances, a smaller generator may meet your needs without being sized for every possible simultaneous load. If continuous whole-home convenience matters more, prioritize capacity and a compatible transfer setup. This exercise is more useful than treating a model’s wattage as a guarantee that every appliance can run together.
Treat the Transfer Switch as Part of the System
A transfer switch connects generator power to selected household circuits and helps prevent unsafe backfeed into utility lines. A listing that includes a transfer switch can simplify product comparison, but it does not by itself tell you whether the switch matches your panel or covers the circuits you want. Confirm the equipment included, the switch’s capacity, and the installation scope with the seller and a licensed electrician. Buyers sometimes focus on the generator and only later discover that electrical work, permits, or other components are separate. Portable generators need an appropriate connection plan too; extension cords and improvised connections are not substitutes for properly installed transfer equipment. Compare the complete system you need rather than the headline generator alone. This is especially helpful when two listings have the same capacity but different switch configurations.
Decide Whether Automatic Backup Is Worth a Permanent Installation
A permanently installed standby generator is designed to respond through its connected transfer system, which suits households that want backup power without setting up a generator each time. A portable generator gives you a different kind of flexibility, but someone must position it safely, connect it correctly, and manage its operation during the outage. That difference matters if outages happen while nobody is home or if the people in the household cannot handle equipment setup. Permanent installation also requires a suitable site, access to the chosen fuel, and professional electrical work. Buyers sometimes compare a portable unit’s stated watts directly with a standby model’s watts while overlooking this difference in operation. Consider who will be present during an outage and what tasks they can safely handle. The right format depends on that routine as much as on the capacity figure.
Check Fuel Availability Before Comparing Fuel Options
The Westinghouse tri-fuel portable listing offers more fuel choice than the dual-fuel portable models, but flexibility only helps if the relevant fuel is accessible during a disruption. Check the exact supported fuels, connection requirements, and operating limits in the product documentation rather than assuming that every option is interchangeable. For standby equipment, verify which fuel configuration applies to the particular model and what supply or connection work your home needs. A common planning error is choosing a generator around a fuel source that may be unavailable, depleted, or impractical to store safely during an extended outage. Think about outage duration, local supply interruptions, and how you will replenish fuel. Fuel flexibility can improve resilience, though it may involve extra setup and operating decisions. Match the fuel plan to your location and household routine.
Size for Real Demand, Not the Largest Number in the Lineup
The Generac lineup spans 10 kW through 28 kW, but moving up in capacity makes sense only when your home and operating plan can use that added output. Larger units may support more concurrent demand, yet generator sizing also affects fuel use, installation requirements, and the circuits or loads the system can serve. Do not assume a 28 kW model is automatically a better purchase than a 14 kW one. Have a qualified professional calculate demand, account for motor starts, and discuss whether load management can cover short peaks. If only selected essentials need backup, a smaller capacity can be a more deliberate fit. If multiple large loads must operate together, a bigger unit may be justified. The purpose of the calculation is to find the capacity that serves your actual plan without relying on guesswork.
Plan for Installation and Ongoing Upkeep
Before committing to a standby model, check local permit rules, placement limits, utility requirements, and access for installation and service. Ask who handles the electrical connection, fuel work, commissioning, and any follow-up maintenance, because product listings may not include those tasks. Also review the owner’s manual for scheduled service, inspection needs, warranty terms, and what happens if a fault appears during an outage. Portable units avoid some permanent site work but still require safe outdoor operation, correct storage, and periodic maintenance. Buyers often focus on purchase specifications and leave these responsibilities until after choosing. A written installation and upkeep plan makes the options easier to compare on their real workload. If a seller cannot clarify what’s included, get the scope in writing before ordering.
Frequently Asked Questions
Is a 10 kW standby generator enough for my home?
It can be enough if you plan to back up selected circuits and avoid running several high-demand appliances at once. Whether it can support your home depends on running loads, motor-starting surges, and the circuits connected through the transfer system. Make a list of the appliances that must operate together and ask an electrician to size the system against that plan. The Generac 10 kW model is the smallest standby option in this roundup, so it is a more natural starting point for a limited-load plan than for an assumption of unrestricted whole-home use. Confirm the exact included switch and compatible circuit setup before deciding.
Should I choose a generator with a transfer switch included?
An included transfer switch can make it easier to compare the equipment package and plan a standby installation, but you still need to confirm compatibility with your electrical panel and desired circuits. It does not mean installation is included or that every appliance will be powered. This roundup includes similar-capacity Generac listings both with and without a transfer switch, so check the exact product configuration rather than relying on the wattage or model family alone. Ask the installer to identify any additional components, labor, or permits required. That full scope is the useful comparison.
When does a portable generator make more sense than a standby unit?
A portable model may fit if you want equipment that can be stored when not in use, can manage manual setup, and do not need an automatic response when utility power fails. The Westinghouse tri-fuel option adds fuel choice, while the dual-fuel models provide a narrower set of listed fuel options. Portable operation still calls for safe outdoor placement, suitable connections, and a plan for refueling. If an outage may occur when nobody can set up the generator, a permanently installed standby system is likely a better operational match. Compare the routine you can sustain during a long outage, not just generator output.
How do I compare two Generac models with the same kW rating?
Start by checking whether each listing includes a transfer switch, then confirm the exact model specifications, fuel configuration, and installation requirements. The 14 kW, 18 kW, 22 kW, and 26 kW options in this roundup include examples where switch inclusion differs between listings. Capacity alone will not tell you whether the package fits your panel or covers the circuits you want. Ask the seller or installer to confirm what equipment ships with the exact product and what must be sourced separately. Compare the complete installed setup against your load plan.
Should I choose a larger generator to allow for future needs?
Choose added capacity only if a load assessment shows that your likely future appliances or simultaneous demand may need it. A larger unit can provide more headroom, but it may also change installation and fuel requirements, and it does not automatically solve an incompatible transfer setup. Have a qualified professional account for startup surges, planned renovations, and load-management options before moving from a smaller to a larger model. The 10 kW to 28 kW span here makes capacity choice visible, but the highest number is not a universal target. A documented plan is a better basis for sizing than buying extra output without a clear use.
Conclusion
I recommend the Generac 18 kW with transfer switch as the best overall fit in this roundup because its capacity and listed switching equipment make a balanced starting point for many standby buyers, subject to professional sizing. For best value by setup simplicity, I would compare the Generac 14 kW or 22 kW listings that include a transfer switch against the exact circuits your home needs; the right choice depends on your load plan, not the rating alone. The best premium direction is the 26 kW or 28 kW Generac for homes whose assessed demand justifies higher output. Beginners who want an essential-circuit standby plan can start with the 10 kW Generac with transfer switch and confirm coverage with an electrician. For specific needs, choose the Westinghouse tri-fuel portable if fuel flexibility and manual operation suit you, or consider the DuroStar and dual-fuel Westinghouse options for portable backup. The best choice is the model whose capacity, switching equipment, fuel plan, and installation scope match the way your household expects to use backup power.
Fall Picks
fall essentials
As an affiliate, we earn on qualifying purchases.
