For most homeowners seeking automatic, whole-home backup, my best overall pick is the Generac 22kW Whole Home Generator with Transfer Switch & Cellular Capability, which balances substantial capacity with automatic transfer and remote monitoring. The Generac 26kW is a stronger fit for larger loads, while the Westinghouse 14500 Peak Watt Tri-Fuel offers a portable, fuel-flexible alternative for buyers who can manage setup themselves. The main tradeoffs are automatic standby convenience versus portable flexibility, generator capacity versus the loads you actually need to run, and installation requirements versus a simpler manual setup. A “whole house” label does not guarantee that every home can run every appliance at once. Read on for the full breakdown of all 15 options and the factors that can make one a better match than another.
Get backup power and energy gear delivered free with Prime
- Fast, free delivery on millions of items
- Prime Video, Amazon Music and more included
- Member-only deals all year
Complete the kit
Key Takeaways
Automatic standby models lead on convenience: The Generac options with transfer switches are designed for hands-off backup, while the Westinghouse and DuroMax portable units require more owner involvement and a compatible connection plan.
Capacity is not a substitute for a load plan: The 10kW and 14kW Generac models suit more limited backup priorities; 22kW and larger models offer more headroom, but a home’s appliances, starting loads, and electrical setup still determine what can run together.
Generac dominates the dedicated standby choices: The lineup includes several automatic standby capacities from 10kW through 28kW, giving buyers more ways to match capacity and monitoring features than the portable selections do.
Tri-fuel flexibility favors portable use cases: The Westinghouse 14500, 13500, and 28000 peak-watt models can run on multiple fuel types, which can help when fuel availability changes, but portable operation is not the same as automatic whole-home backup.
Similar model names call for close comparison: Several Generac entries share a 22kW or 26kW rating but differ in transfer-switch inclusion or monitoring details; compare the exact package, not just the capacity number.
| Generac 10kW Whole Home Generator with Transfer Switch & Cellular Capability |  | Best for Essential-Circuit Backup | Output wattage: 10,000 watts | Fuel: Liquefied petroleum gas or natural gas | Voltage: 120 volts | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 24kW Whole Home Generator with Transfer Switch & Cellular Connectivity |  | Best for Higher-Capacity Standby Backup | Output wattage: 24,000 watts (24 kW) | Starting wattage: 24,000 watts | Power source: Fuel powered | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 22kW Whole Home Generator with Cellular Capability |  | Best Balanced Standby Pick | Output wattage: 22,000 watts (22 kW) | Fuel: Natural gas or propane | Voltage: 240 volts | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse 14500 Peak Watt Tri-Fuel Portable Generator with Remote Electric Start and Transfer Switch Compatibility |  | Best Portable Tri-Fuel Alternative | Peak wattage: 14,500 watts | Running wattage: 11,500 watts | Fuel: Gasoline, liquefied petroleum gas, or natural gas | VIEW LATEST PRICE | See Our Full Breakdown |
| DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator |  | Best for Portable High-Surge Backup | Surge wattage: 13,000 watts | Running wattage: 10,500 watts | Fuel: Gasoline or propane | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 26kW Whole Home Generator with Transfer Switch & Cellular Capability | | Best for High-Capacity Whole-Home Backup | Voltage: 240 volts | Power source: Fuel powered | Engine type: Internal combustion | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 14kW Whole Home Generator, Transfer Switch & Cellular Capability | | Best for Smaller Homes Seeking Automatic Standby | Voltage: 240 volts | Running wattage: 14,000 watts | Engine power maximum: 14 kW | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse 13500 Peak Watt Tri-Fuel Portable Generator with Remote Electric Start |  | Best Portable Pick for Fuel Flexibility | Peak output: 13,500 watts | Running output: 10,500 watts | Fuel types: Gasoline, propane, natural gas | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse 12500 Watt Dual Fuel Portable Generator with Remote Electric Start and Transfer Switch Ready |  | Best Value-Style Portable Backup | Peak output: 12,500 watts | Running output: 9,500 watts | Fuel types: Gasoline, propane | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 22kW Whole Home Generator, Transfer Switch & Cellular Capability | | Best Balanced Standby Capacity | Voltage: 240 volts | Power source: Fuel powered | Engine power maximum: 22 kW | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 26kW Whole Home Generator, Cellular Capability | | Best for High-Demand Homes | Fuel: Natural gas or propane | Voltage: 240 V | Monitoring: Cellular connectivity via Mobile Link | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 18kW Whole Home Generator with Cellular Capability |  | Best for Moderate Backup Loads | Power source: Fuel powered; dual-fuel capability listed | Voltage: 240 V | Weight: 426 lb | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac Guardian 22kW Home Generator, Transfer Switch & WiFi Monitoring |  | Best for a Bundled Transfer-Switch Setup | Fuel: Natural gas or LP gas | Voltage: 240 V | Engine: Generac G-Force 1000 Series | VIEW LATEST PRICE | See Our Full Breakdown |
| Generac 28kW Whole Home Generator, Transfer Switch & Cellular Capability |  | Best for Maximum Standby Capacity | Fuel: LP gas or natural gas | Voltage: 240 V | Transfer switch: Included | VIEW LATEST PRICE | See Our Full Breakdown |
| Westinghouse 28000 Peak Watt Tri-Fuel Portable Home Backup Generator with Remote Electric Start |  | Best Portable Fuel Flexibility | Peak output: 28,000 W | Running output: 20,000 W | Fuel: Gasoline, propane, or natural gas | VIEW LATEST PRICE | See Our Full Breakdown |
| whole house generator | Voltage | Weight | Dimensions | Fuel |
|---|---|---|---|---|
| Generac 10kW Whole Home Genera | 120 volts | 384 pounds | 47.3 × 25.6 × 30.7 inches | Liquefied petroleum gas or natural gas |
| Generac 24kW Whole Home Genera | 240 volts | 461 pounds | 46.4 × 26.3 × 30.7 inches | — |
| Generac 22kW Whole Home Genera | 240 volts | 451 pounds | 46.4 × 26.3 × 30.7 inches | Natural gas or propane |
| Westinghouse 14500 Peak Watt T | 240 volts | — | — | Gasoline, liquefied petroleum gas, or natural gas |
| DuroMax XP13000EH 13,000-Watt | 240 volts | 234 pounds | 30 × 29 × 26 inches | Gasoline or propane |
| Generac 26kW Whole Home Genera | 240 volts | 524 pounds | 46.4 × 26.3 × 30.7 inches | — |
| Generac 14kW Whole Home Genera | 240 volts | 391 pounds | 46.4 × 26.3 × 30.7 inches | — |
| Westinghouse 13500 Peak Watt T | 240 volts | — | — | — |
| Westinghouse 12500 Watt Dual F | 120 volts | — | — | — |
| Generac 22kW Whole Home Genera | 240 volts | 451 pounds | 46.4 × 26.3 × 30.7 inches | — |
| Generac 26kW Whole Home Genera | 240 V | 524 lb | 46.4 x 26.3 x 30.7 in | Natural gas or propane |
| Generac 18kW Whole Home Genera | 240 V | 426 lb | 46.4 x 26.3 x 30.7 in | — |
| Generac Guardian 22kW Home Gen | 240 V | 466 lb | 50 x 27 x 29 in | Natural gas or LP gas |
| Generac 28kW Whole Home Genera | 240 V | 524 lb | 46.4 x 26.3 x 30.7 in | LP gas or natural gas |
| Westinghouse 28000 Peak Watt T | 240 V | — | — | Gasoline, propane, or natural gas |
More Details on Our Top Picks
Generac 10kW Whole Home Generator with Transfer Switch & Cellular Capability
At 10,000 watts, this Generac is the smaller standby choice in this group, aimed at keeping selected household essentials running rather than matching the broader capacity of the Generac 22kW and 24kW models. Its automatic backup and natural-gas or propane operation suit homeowners who want a permanently installed system without relying on gasoline storage. Cellular monitoring can help track the unit remotely, though access requires a subscription. The aluminum enclosure and five-year limited warranty add practical reassurance, but at 384 pounds this is still a professional-installation project, not a portable alternative. I would choose it when a load assessment confirms that 10kW covers the circuits that matter; buyers hoping to power a wider set of appliances at once should compare the higher-output Generac options instead.
Pros:- Automatic standby operation can restore backup power without a manual start.
- Runs on natural gas or liquefied petroleum gas, avoiding gasoline-only dependence.
- Cellular monitoring supports remote status checks.
- Aluminum enclosure and five-year limited warranty are suited to a permanent residential setup.
Cons:- 10kW output is lower than the Generac 22kW and 24kW models, limiting simultaneous loads.
- At 384 pounds, delivery and installation call for professional planning.
- Remote cellular monitoring requires a subscription.
Best for: Homeowners who have identified a limited set of essential circuits and want automatic standby power on natural gas or propane.
Not ideal for: Households seeking capacity for many large appliances at once, or buyers who want a portable generator they can move and operate without installation.
- Output wattage:10,000 watts
- Fuel:Liquefied petroleum gas or natural gas
- Voltage:120 volts
- Recommended use:Residential
- Weight:384 pounds
- Dimensions:47.3 × 25.6 × 30.7 inches
- Material:Aluminum
- Warranty:5-year limited warranty
Our verdict“Choose this Generac when a measured essential-circuit load fits 10kW and automatic, permanently installed backup matters more than broad whole-home capacity.”
Generac 24kW Whole Home Generator with Transfer Switch & Cellular Connectivity
The 24kW output gives this Generac a useful step up from the 22kW model in the roundup, making it a stronger fit for homes with several substantial loads to support during an outage. Like the 10kW Generac, it is a fuel-powered standby unit with automatic backup and cellular monitoring; the difference is the extra capacity, not a change in the basic installed-generator approach. Its 240-volt output aligns with residential backup needs, while the aluminum-and-steel construction is built for a fixed outdoor installation. Fuel efficiency and longer service intervals are stated advantages, but the 461-pound unit needs professional handling. Buyers who can meet their needs with 22kW may not benefit from the added output, and cellular app monitoring requires a subscription.
Pros:- 24kW output exceeds the Generac 22kW model for homes with larger simultaneous loads.
- Automatic standby backup reduces the need for manual intervention during outages.
- Cellular connectivity allows remote monitoring and control.
- Fuel-efficient operation and long service intervals can reduce routine upkeep.
Cons:- The 461-pound weight makes professional delivery and installation likely.
- Mobile monitoring requires a subscription.
- The additional capacity may be unnecessary for homes with a smaller calculated backup load.
Best for: Homeowners whose load assessment calls for more standby capacity than 22kW can provide and who want automatic residential backup.
Not ideal for: Buyers with modest essential-circuit needs, or anyone who wants a lightweight, manually portable backup option.
- Output wattage:24,000 watts (24 kW)
- Starting wattage:24,000 watts
- Power source:Fuel powered
- Voltage:240 volts
- Recommended use:Residential
- Weight:461 pounds
- Dimensions:46.4 × 26.3 × 30.7 inches
- Materials:Aluminum and steel
Our verdict“Pick the 24kW Generac over the 22kW model when your home’s calculated load justifies the extra standby capacity.”
Generac 22kW Whole Home Generator with Cellular Capability
This 22kW Generac sits between the 10kW unit and the 24kW model, offering substantial standby capacity without moving to the lineup’s higher-output option. It starts automatically when it detects an outage and runs on natural gas or propane, making it a fit for homeowners who want fixed backup rather than a portable generator requiring setup. Automatic voltage regulation and low-oil shutdown add useful operating protections, while Mobile Link cellular monitoring makes remote status checks possible. Compared with the 24kW Generac, it gives up 2kW of listed output; compared with the 10kW model, it is much better suited to larger loads. Its 451-pound weight and paid monitoring subscription remain real costs in planning, and a proper load assessment should guide the choice.
Pros:- 22kW output offers far more capacity than the 10kW Generac.
- Automatic outage detection and startup suit permanent home backup.
- Runs on natural gas or propane.
- Automatic voltage regulation, low-oil shutdown, and a five-year limited warranty are specified.
Cons:- At 451 pounds, it requires careful delivery and installation planning.
- Mobile Link premium monitoring requires a paid subscription.
- It provides less listed output than the Generac 24kW model.
Best for: Homeowners seeking a substantial automatic standby system for a larger household, with natural-gas or propane fuel and remote monitoring.
Not ideal for: Buyers who only need essential-circuit backup or who want to avoid professional installation and a paid monitoring plan.
- Output wattage:22,000 watts (22 kW)
- Fuel:Natural gas or propane
- Voltage:240 volts
- Engine type:Internal combustion
- Features:Automatic voltage regulation, low-oil shutdown, cellular monitoring
- Weight:451 pounds
- Dimensions:46.4 × 26.3 × 30.7 inches
- Warranty:5-year limited warranty
Our verdict“Choose this model if 22kW matches your home’s calculated load and you want automatic standby power without stepping up to the 24kW unit.”
Westinghouse 14500 Peak Watt Tri-Fuel Portable Generator with Remote Electric Start and Transfer Switch Compatibility
This Westinghouse is the portable alternative for buyers who value three fuel choices and do not need a permanently installed standby system. Its 11,500 running watts are substantial for a portable generator, while the 14,500-watt peak figure covers starting surges; both figures are below the 22kW and 24kW Generac standby units’ listed output. Remote electric start can simplify startup, and transfer-switch compatibility lets it connect to household circuits when paired with the right equipment. That connection is not automatic standby: a separate transfer switch and hands-on setup are part of the plan. A stated runtime of up to 19 hours is helpful, though actual runtime depends on conditions and load. I’d favor it for fuel flexibility and portability, not for unattended whole-home coverage.
Pros:- Tri-fuel operation provides gasoline, propane, and natural-gas flexibility.
- 11,500 running watts can support substantial household loads for a portable unit.
- Remote electric start reduces effort at startup.
- Transfer-switch compatible for connection to selected home circuits with suitable equipment.
Cons:- A separate transfer switch is required for household connection and automatic backup is not provided.
- Its running output is below the Generac 22kW and 24kW standby models.
- The heavy portable design may need help to move and position.
Best for: Homeowners who want a portable backup with gasoline, propane, and natural-gas options and are comfortable arranging transfer-switch equipment and manual operation.
Not ideal for: Buyers who expect an installed generator to detect outages and power the home automatically, or who need output comparable to a 22kW or 24kW standby unit.
- Peak wattage:14,500 watts
- Running wattage:11,500 watts
- Fuel:Gasoline, liquefied petroleum gas, or natural gas
- Voltage:240 volts
- Engine:4-stroke, 550 cc
- Tank volume:36 liters
- Listed runtime:Up to 19 hours
- Features:Remote electric start, automatic voltage regulation, CO sensor
Our verdict“Choose this Westinghouse if fuel flexibility and portable backup matter more than automatic, permanently installed whole-home operation.”
DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator
The DuroMax XP13000EH combines 13,000 surge watts with 10,500 running watts, making it a portable option for households that need help with startup surges from larger appliances. Its gasoline-or-propane setup is simpler than the Westinghouse’s tri-fuel flexibility, but it still gives buyers an alternative to gasoline when propane is available. Electric start and a steel frame suit a generator that may be stored between outages, though at 234 pounds it is not easy to reposition. Unlike the Generac 10kW standby model, this requires manual deployment and a suitable transfer setup for household circuits; it does not provide automatic outage response. The listed three-hour runtime is a notable constraint, so buyers should verify the load and runtime needs before treating it as whole-home coverage.
Pros:- 13,000-watt surge rating can accommodate demanding startup loads.
- 10,500 running watts provide substantial portable backup output.
- Gasoline and propane operation offer two fuel options.
- Electric start and low-oil shutdown support easier operation and basic engine protection.
Cons:- Listed runtime is only three hours, which can mean frequent refueling.
- At 234 pounds, it is difficult to move despite its portable format.
- Manual deployment does not match the automatic standby operation of the Generac models.
Best for: Homeowners who need a high-surge portable generator for selected household circuits and can manage manual startup, fuel, and transfer equipment.
Not ideal for: Buyers seeking automatic standby service, extended operation without refueling, or three-fuel choice like the Westinghouse portable model.
- Surge wattage:13,000 watts
- Running wattage:10,500 watts
- Fuel:Gasoline or propane
- Voltage:240 volts
- Engine displacement:500 cc
- Weight:234 pounds
- Dimensions:30 × 29 × 26 inches
- Listed runtime:3 hours
Our verdict“Pick the DuroMax for portable, high-surge backup if you accept short listed runtime and manual operation instead of automatic whole-home standby.”
Generac 26kW Whole Home Generator with Transfer Switch & Cellular Capability
At 26kW, this Generac is the highest-output permanently installed option among these five, making it a stronger fit for homes with larger loads than the Generac 22kW Whole Home Generator. Automatic backup and cellular monitoring suit owners who want the system to start without manual setup and to check its status remotely. Its enclosed aluminum-and-steel build is designed for outdoor installation, while voltage regulation and low-oil shutdown add useful operating safeguards. The tradeoff is substantial: at 524 pounds, this is not a portable backup unit, and installation calls for a suitable LP or natural-gas connection. Cellular app monitoring also requires a subscription, so I’d choose it for capacity and permanent standby convenience—not for a low-hassle or fuel-independent setup.
Pros:- 26kW output offers more capacity than the 22kW Generac model in this lineup.
- Automatic backup operation avoids the need to wheel out and start a portable unit.
- Cellular capability supports remote status checks and control.
- Low-oil shutdown and automatic voltage regulation add operating protections.
Cons:- At 524 pounds, it requires a permanent installation rather than casual repositioning.
- Needs an LP or natural-gas connection, limiting fuel flexibility.
- Remote mobile monitoring requires an additional subscription.
Best for: Homeowners with larger electrical loads who want a permanently installed, automatic standby system and have access to LP or natural gas.
Not ideal for: Renters, buyers who need a portable generator, or households without a compatible gas supply and room for professional installation.
- Voltage:240 volts
- Power source:Fuel powered
- Engine type:Internal combustion
- Frequency:60 hertz
- Weight:524 pounds
- Dimensions:46.4 × 26.3 × 30.7 inches
- Additional features:Cellular capability, automatic voltage regulation, low-oil shutdown
Our verdict“Choose this Generac if you need the lineup’s greatest listed standby output and can support a permanent gas-connected installation.”
Generac 14kW Whole Home Generator, Transfer Switch & Cellular Capability
This 14kW standby generator is the lower-capacity permanently installed choice here, so it makes more sense for a smaller home or a carefully selected set of household loads than for buyers trying to cover every high-demand appliance at once. Like the Generac 22kW Whole Home Generator, it offers automatic backup and cellular monitoring, but the lower output can be a better match when a larger system would exceed the home’s needs. Smart-home energy-system compatibility may also appeal to owners who want coordinated control. The compromise is less headroom: buyers must plan which circuits and appliances run together. It is still a heavy, fixed installation at 391 pounds, and the supplied listing does not specify warranty terms, so I would verify coverage and installation details before choosing it.
Pros:- Automatic standby operation provides backup without manual starting.
- Cellular monitoring offers remote performance checks.
- Smart-home energy-system compatibility can support coordinated control.
- Lower listed output than the 22kW and 26kW Generac models may suit smaller load plans.
Cons:- 14kW output leaves less capacity for simultaneous large household loads than the other Generac standby options here.
- At 391 pounds, it is a fixed-installation product, not a portable backup choice.
- Warranty terms are listed as available upon request rather than specified.
Best for: Owners of smaller homes who want automatic standby power, cellular monitoring, and a system sized around selected household loads.
Not ideal for: Households with large simultaneous electrical demands or buyers who need a portable unit, confirmed warranty details, or generous capacity headroom.
- Voltage:240 volts
- Running wattage:14,000 watts
- Engine power maximum:14 kW
- Frequency:60 hertz
- Weight:391 pounds
- Dimensions:46.4 × 26.3 × 30.7 inches
- Material:Stainless steel
Our verdict“Pick this model for a smaller home with a defined backup-load plan, but choose a higher-output Generac if you need more simultaneous capacity.”
Westinghouse 13500 Peak Watt Tri-Fuel Portable Generator with Remote Electric Start
Unlike the permanently installed Generac standby models, this Westinghouse is a portable tri-fuel generator: it can run on gasoline, propane, or natural gas, giving owners more options when one fuel is difficult to obtain. Its 10,500 running watts and 13,500 peak watts provide substantial portable backup, while remote electric start removes some of the effort of starting it at the unit. The listed runtime reaches 19 hours, though actual runtime depends on conditions and load. Compared with the Westinghouse WGen9500DF, this model adds a third fuel choice and higher listed running output. It still does not match the hands-off automatic operation of a whole-house standby system, and the product data gives no weight, so I’d confirm handling and transfer setup before treating it as a home’s main outage plan.
Pros:- Tri-fuel operation allows use of gasoline, propane, or natural gas.
- 10,500 running watts provide more listed continuous output than the WGen9500DF.
- Remote electric start reduces the need to start the generator at its controls.
- Up to 19 hours of stated runtime can reduce refueling interruptions under listed conditions.
Cons:- Portable operation requires the owner to position, connect, and manage the generator during an outage.
- Weight is not specified, making transport and storage planning harder.
- Portable output and setup do not provide the same automatic whole-house coverage as a standby system.
Best for: Homeowners who want portable backup with gasoline, propane, and natural-gas options and are prepared to manage setup during an outage.
Not ideal for: Buyers seeking automatic, permanently installed whole-house backup or anyone who needs a confirmed weight before planning transport and storage.
- Peak output:13,500 watts
- Running output:10,500 watts
- Fuel types:Gasoline, propane, natural gas
- Engine displacement:500 cc
- Fuel tank volume:36 liters
- Listed runtime:Up to 19 hours
- Voltage:240 volts
- Outlets:5
Our verdict“Choose the WGen10500TFc if fuel flexibility and portable power matter more than automatic standby operation.”
Westinghouse 12500 Watt Dual Fuel Portable Generator with Remote Electric Start and Transfer Switch Ready
The WGen9500DF offers a simpler portable backup proposition than the tri-fuel Westinghouse WGen10500TFc: it runs on gasoline or propane, with up to 9,500 running watts and 12,500 peak watts. That output can support multiple household circuits when paired with suitable transfer equipment, but this is not an automatic whole-house standby generator. Its remote electric start helps reduce startup effort, and the 6.6-gallon tank is listed for up to 12 hours of runtime. The two-fuel setup is less flexible than the WGen10500TFc’s three choices, and the 120-volt listing calls for careful checking of connection and circuit needs before purchase. I’d favor it for buyers who want a substantial, movable outage option and can handle setup themselves.
Pros:- Dual-fuel operation provides gasoline and propane options.
- 9,500 running watts offer substantial portable backup output.
- Remote electric start can simplify startup.
- Up to 12 hours of listed runtime supports extended operation between refills under stated conditions.
Cons:- It requires owner setup and does not start automatically like the Generac standby models.
- It lacks the natural-gas option available on the Westinghouse WGen10500TFc.
- The 120-volt specification makes connection requirements worth checking against the intended transfer setup.
Best for: Homeowners who want a portable gasoline-or-propane generator for selected household circuits and are comfortable arranging transfer equipment and manual operation.
Not ideal for: Buyers who need automatic whole-house coverage, natural-gas operation, or a generator that requires little outage-day setup.
- Peak output:12,500 watts
- Running output:9,500 watts
- Fuel types:Gasoline, propane
- Voltage:120 volts
- Fuel tank volume:6.6 gallons
- Engine displacement:457 cc
- Listed runtime:Up to 12 hours
- Total power outlets:6
Our verdict“Choose the WGen9500DF for portable dual-fuel backup when you can accept manual setup and do not need natural-gas operation.”
Generac 22kW Whole Home Generator, Transfer Switch & Cellular Capability
The Generac 22kW sits between the 14kW and 26kW standby choices in this group, offering a middle ground for homeowners who want automatic backup without moving to the lineup’s highest listed output. It detects outages and starts within seconds, so it differs from both Westinghouse portable units, which require owner involvement. Cellular monitoring through Mobile Link adds remote status visibility, while the five-year limited warranty and stated 24/7 customer support provide defined support details not supplied for the 14kW model. Against the Generac 26kW, the main tradeoff is less capacity headroom; against the 14kW, it offers more room for simultaneous loads. At 451 pounds, it still calls for a permanent installation, outdoor space, and a paid subscription for app monitoring.
Pros:- 22kW output provides a middle capacity point between the 14kW and 26kW Generac models.
- Automatic outage detection and startup reduce manual intervention.
- Cellular Mobile Link monitoring supports remote status checks.
- Includes a listed five-year limited warranty and 24/7 customer support.
Cons:- At 451 pounds, it needs a permanent installation and is not portable.
- Mobile Link monitoring requires a paid subscription.
- Its 22kW output is below the 26kW Generac for homes with greater simultaneous load needs.
Best for: Homeowners seeking automatic standby backup with more load capacity than a 14kW unit but who do not need the 26kW model’s higher output.
Not ideal for: Buyers who need portable power, have no suitable outdoor installation space, or require the greatest listed output in this group.
- Voltage:240 volts
- Power source:Fuel powered
- Engine power maximum:22 kW
- Ignition system:Electronic
- Weight:451 pounds
- Dimensions:46.4 × 26.3 × 30.7 inches
- Additional features:Cellular capability, automatic voltage regulation, low-oil shutdown
Our verdict“Choose this Generac for automatic standby power with a balanced 22kW capacity, unless your home needs the extra headroom of the 26kW model.”
Generac 26kW Whole Home Generator, Cellular Capability
With 26 kW of automatic backup capacity, this Generac suits households that want room to run several major loads during an outage, rather than rationing power around a smaller system. It runs on natural gas or propane and starts automatically when utility power fails, making it a more hands-off fit than the portable Westinghouse 28000 Peak Watt Tri-Fuel generator, which needs a separate transfer solution for whole-home use. Cellular monitoring can send status updates through Mobile Link, though full remote features require a paid subscription. This unit is a strong middle ground between the 22 kW Generac Guardian and the higher-output 28 kW Generac: more capacity than the former without stepping up to the latter. The tradeoff is a 524-pound enclosure and installation that calls for careful siting and fuel-line work.
Pros:- Automatic startup provides hands-off backup when utility power fails.
- 26 kW output supports more simultaneous household loads than the 18 kW Generac.
- Natural gas and propane compatibility gives fuel-supply flexibility.
- Cellular Mobile Link monitoring and a five-year limited warranty are included.
Cons:- Full remote monitoring features require a paid Mobile Link subscription.
- At 524 pounds, the enclosure requires professional handling and installation.
- Fuel-line connection and placement requirements make setup more involved than a portable generator.
Best for: Homeowners with multiple high-demand appliances who want automatic, permanently installed backup and remote status alerts.
Not ideal for: Buyers with limited installation space, no access to natural gas or propane, or a preference for a portable system they can move themselves.
- Fuel:Natural gas or propane
- Voltage:240 V
- Monitoring:Cellular connectivity via Mobile Link
- Weight:524 lb
- Dimensions:46.4 x 26.3 x 30.7 in
- Warranty:5-year limited
Our verdict“Choose this 26 kW Generac if you want automatic, substantial whole-home backup without moving up to the 28 kW model.”
Generac 18kW Whole Home Generator with Cellular Capability
The 18 kW output makes this Generac the lower-capacity choice among the permanently installed units in this group. It can suit a household prioritizing core comforts and selected appliances, but buyers should plan loads carefully rather than assume every high-demand appliance can run together. Compared with the 22 kW Generac Guardian, it offers less headroom; its advantage is a more restrained capacity target for homes that do not need the extra output. The model supports automatic backup and cellular monitoring, with smart-home compatibility noted in the product information, though premium app features require a subscription. Its 426-pound weight is lighter than the 466-pound Guardian but still calls for professional handling. The listing’s starting-wattage figure conflicts with its stated 18 kW rating, so I would confirm the exact output configuration with the seller or installer before purchase.
Pros:- Automatic backup operation reduces the need for manual startup during outages.
- Cellular monitoring provides remote status access through a mobile app.
- Dual-fuel capability offers fuel flexibility.
- At 426 pounds, it is lighter than the 22 kW Generac Guardian listed here.
Cons:- 18 kW provides less simultaneous-load headroom than the 22 kW and 26 kW Generac models.
- Premium mobile monitoring features require a subscription.
- The listed starting wattage conflicts with the stated 18 kW output and needs confirmation.
Best for: Homeowners with moderate backup needs who want a permanently installed, automatic generator and can prioritize which large loads operate during an outage.
Not ideal for: Households expecting to run several large appliances at once, or buyers unwilling to verify the listing’s conflicting starting-wattage specification.
- Power source:Fuel powered; dual-fuel capability listed
- Voltage:240 V
- Weight:426 lb
- Dimensions:46.4 x 26.3 x 30.7 in
- Monitoring:Cellular connectivity
- Engine:Internal combustion, electronic ignition
Our verdict“Pick this model for moderate, planned backup loads, but verify its output details and skip it if you need more capacity headroom.”
Generac Guardian 22kW Home Generator, Transfer Switch & WiFi Monitoring
This Guardian’s clearest distinction is the included transfer switch, which makes it a more complete system package than the Generac 26 kW model listed here, whose product details do not specify an included switch. Its 22 kW output sits between the 18 kW Generac and higher-capacity options, giving many households useful backup capacity without choosing the largest unit in this batch. Wi-Fi monitoring adds remote performance checks, while the G-Force 1000 Series engine and protective shutdown features support standby operation. The tradeoff is that 22 kW is still below the 26 kW and 28 kW Generacs, so buyers with several large simultaneous loads may want more capacity. At 466 pounds, it also remains a professional-installation product, and the required certified electrical work means “included switch” does not mean a do-it-yourself setup.
Pros:- Transfer switch is included in the listed package.
- 22 kW output exceeds the 18 kW Generac’s capacity.
- Wi-Fi monitoring supports remote performance checks.
- G-Force 1000 Series engine and automatic voltage regulation are specified.
Cons:- Provides less output than the 26 kW and 28 kW Generac models.
- At 466 pounds, it requires professional handling and installation.
- Certified electrical installation adds work beyond unpacking the included switch.
Best for: Homeowners who want a 22 kW standby generator with a transfer switch included and prefer Wi-Fi monitoring over a cellular connection.
Not ideal for: Buyers who need the highest output in this group, want cellular rather than Wi-Fi monitoring, or plan to install a generator without a qualified electrician.
- Fuel:Natural gas or LP gas
- Voltage:240 V
- Engine:Generac G-Force 1000 Series
- Engine displacement:999 cc
- Monitoring:Wi-Fi
- Weight:466 lb
- Dimensions:50 x 27 x 29 in
Our verdict“Choose the Guardian if a bundled transfer switch and Wi-Fi monitoring matter more than the extra capacity offered by the larger Generac models.”
Generac 28kW Whole Home Generator, Transfer Switch & Cellular Capability
At 28 kW running output, this is the highest-capacity permanently installed generator in this batch, making it the strongest fit for homes with substantial simultaneous electrical demand. It uses LP or natural gas and includes a transfer switch, unlike the portable Westinghouse 28000 Peak Watt Tri-Fuel generator, which needs a separate transfer switch or interlock for home integration. Cellular monitoring and a five-year limited warranty add useful support, while oil-level sensors are described as helping operation in cold climates. The tradeoffs are practical: this unit weighs 524 pounds, has the same substantial footprint as the 26 kW Generac, and requires paid Mobile Link access for premium remote features. Buyers whose load calculations fit comfortably within 22 or 26 kW may not gain enough from the extra output to justify selecting this larger-capacity system.
Pros:- 28 kW running output is the highest among the permanently installed models in this batch.
- Transfer switch is included for integration with home electrical circuits.
- Cellular Mobile Link monitoring provides remote alerts and status checks.
- Five-year limited warranty and oil-level sensors are specified.
Cons:- The 524-pound unit requires professional handling and installation.
- Premium Mobile Link monitoring requires a paid subscription.
- Its large enclosure can be difficult to site where outdoor space is limited.
Best for: Owners of larger homes with high concurrent electrical loads who want an automatic standby system with its transfer switch included.
Not ideal for: Households whose load requirements fit a lower-output generator, or buyers with tight installation space or no budget for professional installation and monitoring subscriptions.
- Fuel:LP gas or natural gas
- Voltage:240 V
- Transfer switch:Included
- Monitoring:Cellular connectivity via Mobile Link
- Frequency:60 Hz
- Weight:524 lb
- Dimensions:46.4 x 26.3 x 30.7 in
- Warranty:5-year limited
Our verdict“Select this 28 kW Generac when a load calculation points to the greatest standby capacity here and you have room for its installation.”
Westinghouse 28000 Peak Watt Tri-Fuel Portable Home Backup Generator with Remote Electric Start
This Westinghouse offers three fuel options—gasoline, propane, and natural gas—plus 20,000 running watts, making it a flexible choice for backup power that can also move to a jobsite. It differs sharply from the Generac 28 kW standby model: its 28,000-watt figure is peak output, not running capacity, and it does not provide automatic whole-house transfer. A separate transfer switch or interlock is needed to connect it to home circuits, and someone must manage starting and fuel arrangements during an outage. Remote electric start eases operation, while wheels and handles support relocation, though the product is still described as heavy and its weight is not specified. The 17.2-gallon tank and up-to-13-hour runtime are useful portable-generator details, but runtime depends on operating conditions and load.
Pros:- Runs on gasoline, propane, or natural gas.
- 20,000 running watts provide substantial portable backup output.
- Electric and remote start reduce effort when starting the generator.
- Wheels, handles, CO sensor, and low-oil shutdown support portable operation and safety.
Cons:- 28,000 watts is peak output; running capacity is 20,000 watts.
- A separate transfer switch or interlock is required for home-circuit connection.
- It does not offer the automatic, unattended backup operation of the Generac standby models.
Best for: Buyers who want a high-output portable generator with three fuel choices for home backup and occasional jobsite use, and who can arrange a transfer switch or interlock.
Not ideal for: Homeowners seeking unattended automatic whole-house backup, or anyone unable to handle a large portable unit and manage fuel during an outage.
- Peak output:28,000 W
- Running output:20,000 W
- Fuel:Gasoline, propane, or natural gas
- Engine displacement:999 cc
- Fuel tank:17.2 gal
- Listed runtime:Up to 13 hours
- Voltage:240 V
- Warranty:3-year limited residential
Our verdict“Choose this Westinghouse for portable, three-fuel flexibility, not for the automatic whole-house operation of a permanently installed standby generator.”
How We Picked
I ranked these products by how well they address the core whole-house backup job: supplying the loads a home needs during an outage with a setup the owner can operate safely and reliably. I weighed stated capacity, standby versus portable design, transfer-switch inclusion or compatibility, fuel flexibility, remote monitoring, and the amount of setup the buyer must handle. Capacity matters, but a larger number alone does not make a generator a better fit; useful output depends on household demand and the installation.
The order gives priority to automatic standby systems that pair meaningful home-backup capacity with a transfer switch and monitoring, then distinguishes among them by capacity and package completeness. Portable generators rank lower for buyers seeking automatic whole-home coverage because they generally require manual connection and operating steps, though they may suit people who value mobility or fuel choice. I also treated near-duplicate Generac packages separately: included equipment and monitoring differences can affect the buying decision even when the listed capacity is the same. Confirm model specifications, fuel configuration, installation requirements, and local code requirements before choosing.
Factors to Consider When Choosing Whole House Generators
The right generator depends less on the broad “whole house” label than on what you need to keep running and how much involvement you want during an outage. Use these factors to match the equipment to your home and avoid paying for capacity or convenience you will not use.
Choose the Loads You Need to Protect
Start by listing the circuits and appliances you want powered during an outage, rather than assuming every room needs full service. Include large motor-driven equipment such as air conditioners, pumps, and refrigerators, since their startup demand can differ from their normal running demand. A licensed electrician can calculate the household load and advise whether load management or selective circuit coverage makes sense. This step can prevent both oversizing and the frustration of buying a smaller unit that cannot start key equipment. If your priorities are limited to essentials, a lower-capacity standby model may be a better fit than a larger unit. If you expect several major loads to operate at once, compare higher-capacity options against a documented load plan, not just their headline wattage.
Decide Whether Automatic Backup Is Worth the Installation
A standby generator paired with a compatible transfer switch can start and connect to selected home circuits automatically, reducing the work required during an outage. That convenience comes with a more involved installation and a fixed location, so the generator itself is only part of the project. Portable models usually ask the owner to position the unit, connect it through an appropriate transfer setup, and manage startup and shutdown. Never connect a portable generator directly to household wiring without approved transfer equipment; improper connections can create serious hazards. Buyers who travel often or want backup to begin with little intervention may prefer standby equipment. Those comfortable handling outage procedures may accept the extra work in exchange for portability and fuel options.
Match Fuel Choices to Your Actual Supply
Fuel flexibility is useful only if the fuel is available, stored safely, and compatible with the generator configuration. Standby models are commonly selected around a home’s available fuel connection, while tri-fuel and dual-fuel portable models offer alternatives that can help when one supply is difficult to obtain. Ask how the listed capacity changes across fuel types, because output may vary depending on the fuel used. Also account for storage limits, delivery access, and how long you expect an outage to last. A generator that can use several fuels does not remove the need to plan for fuel quantity and safe handling. Before buying, confirm the exact model’s supported fuels and the installation rules that apply where you live.
Compare Complete Packages, Not Just Generator Ratings
Two products with the same listed capacity may differ in whether a transfer switch is included, what monitoring features are provided, or what additional equipment the installation requires. Read the exact model and package details, particularly among similarly named Generac 22kW and 26kW listings. A listed switch can simplify planning, but it does not mean installation labor, permits, wiring, or site preparation are included. Monitoring can help an owner check status remotely, but it should not be treated as a replacement for maintenance or a correctly sized system. Ask the installer for an itemized scope so you can compare complete setups rather than generator-only specifications. This is especially helpful when a lower-capacity package appears to offer similar convenience to a larger one.
Plan for Noise, Placement, and Local Rules
Generator placement affects safe operation, access for service, and the experience of people in and around the home. Standby systems need a suitable location with required clearances, while portable units need a stable outdoor operating area and a safe route for electrical connections. Local codes, utility rules, permits, and manufacturer instructions can limit where equipment may be installed. Noise may also matter if the unit is near bedrooms, neighbors, or shared outdoor spaces, so check the model information and placement guidance before committing. Do not plan to operate a fuel-burning generator indoors or in an enclosed space. Having an installer review the site early can uncover constraints before you settle on a model or package.
Budget for Upkeep and Outage Readiness
A backup generator is a maintained system, not an appliance that can be ignored until the power goes out. Follow the manufacturer’s service schedule and learn what routine checks apply to the selected model, fuel system, and transfer equipment. Standby units can reduce manual effort, but they still need maintenance and periodic checks. Portable generators ask for more owner involvement, including safe storage, fuel planning, and readiness checks before an outage. Ask who will perform service, how to access support, and what tasks remain the owner’s responsibility. A purchase that matches your maintenance habits is more likely to be ready when backup power is needed.
Frequently Asked Questions
Can a portable generator in this roundup really power my whole house?
Possibly, but the phrase “whole house” should not be read as a guarantee that every circuit and appliance can run at once. Portable models such as the Westinghouse tri-fuel units and DuroMax need a compatible transfer setup, and their useful output depends on the selected fuel and household loads. A qualified electrician can identify which circuits are practical to power and whether load management is needed. If you want automatic changeover with less manual work, a standby model with a compatible transfer switch is usually the closer match. Base the decision on a load calculation and the exact model’s specifications rather than the product name alone.
How do I choose between a 10kW or 14kW standby model and a 22kW-or-larger one?
Choose capacity by identifying which loads must run together, including equipment with high startup demand. The lower-capacity Generac models may fit homes with a narrower list of backup priorities, while the larger models provide more headroom for multiple major loads. More capacity does not automatically mean better value if your electrical plan will not use it. Ask an electrician to calculate your loads and explain whether staged operation or load management can meet your needs. Compare that recommendation with the exact generator rating and fuel configuration before selecting a size.
If two Generac models have the same kilowatt rating, how should I compare them?
Check the full package rather than treating the capacity as the only difference. In this lineup, some similarly rated options vary by whether a transfer switch is included and by the stated monitoring features. Confirm which components are in the exact listing, what must be purchased separately, and whether the equipment suits your home’s electrical service. Also ask an installer to confirm compatibility and account for site work, permits, and connection requirements. A package that looks more complete may reduce coordination, but it does not eliminate installation planning.
Is a tri-fuel portable generator a better choice than a natural-gas standby generator?
Neither is better for every household; they address different priorities. A tri-fuel portable model offers fuel choice and mobility, which can help when supply conditions vary, but it typically requires manual setup and an approved home connection. A standby system is fixed in place and may offer automatic operation when paired with the right transfer equipment, but installation is more involved. Compare fuel availability at your property, the amount of hands-on work you can manage during an outage, and the loads you expect to run. Verify output by fuel type before deciding that a flexible-fuel model will meet your power needs.
What should I confirm before arranging installation for a standby generator?
Ask an electrician or qualified installer to check your home’s service, backup loads, transfer-switch compatibility, fuel connection, and proposed generator location. Find out which permits, inspections, utility coordination, and site preparations apply locally. Request a written scope that separates the generator package from labor and any additional electrical or fuel-system work. Confirm who will handle maintenance and what monitoring features require a connection or setup. These checks can reveal that a model with an included transfer switch still needs additional components or work before it is ready to operate.
Conclusion
For most homeowners seeking automatic backup with useful capacity, I recommend the Generac 22kW Whole Home Generator with Transfer Switch & Cellular Capability as the best overall fit in this roundup. The best value depends on your load plan: choose a lower-capacity Generac such as the 10kW or 14kW when essential circuits are the priority, rather than paying for capacity you will not use. For the best premium choice, the Generac 28kW model offers the highest listed standby capacity here for homes with demanding backup loads, subject to professional sizing. The best choice for beginners is a standby package that includes a transfer switch, since it offers a clearer path to an automatic system than a portable generator, though installation still requires professional planning. For specific needs, choose a Westinghouse tri-fuel portable model if mobility and fuel options matter more than automatic operation; select a larger standby model when a load calculation supports the extra capacity. Match the exact package to your home’s electrical loads, fuel supply, site, and preferred level of involvement before making the final choice.
Fall Picks
fall essentials
As an affiliate, we earn on qualifying purchases.
