Among these whole house standby generators, I’d put the Generac 22 kW with a transfer switch and cellular connectivity first for its balanced capacity and included switching hardware. The Generac 24 kW with a 200-amp transfer switch is a stronger fit for homes with larger loads, while the 10 kW Generac models suit households prepared to prioritize essential circuits. The main tradeoff is between capacity and installation demands: a larger unit can cover more simultaneous loads, but may require more fuel, space, and electrical work. I also include two Westinghouse portable models, which offer fuel flexibility but do not provide the automatic, permanently installed backup experience of a standby generator. Continue reading for my full comparison and guidance on matching generator size and equipment to your home.
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Key Takeaways
- Transfer-switch inclusion changes the comparison: several Generac listings bundle a switch, while others list cellular monitoring without specifying one, so buyers should confirm exactly what comes in the box.
- The 22 kW and 24 kW options occupy the practical middle: they offer a step up from the 10–14 kW models without jumping straight to the 26–28 kW tier.
- Capacity is not a substitute for a load plan: a home’s appliances, starting surges, and managed circuits matter more than choosing the largest number in the roundup.
- Cellular connectivity is a monitoring feature, not backup power: it can help owners check generator status, but it does not replace maintenance, fuel planning, or a correctly sized transfer system.
- The Westinghouse models serve a different use case: their portable, dual- or tri-fuel format offers flexibility, but they lack the automatic whole-home standby setup offered by the permanently installed models.
| whole house standby generator | Fuel | Voltage | Power output | Connectivity |
|---|---|---|---|---|
| Generac 22 kW Whole-Home Stand | Natural gas or propane | 240 V | 22 kW | Built-in cellular; some Mobile Link features require a premium subscription |
| Generac 24 kW Whole-Home Stand | Propane or natural gas | 240 V | 24 kW | Built-in cellular; some Mobile Link features require a premium subscription |
| Generac 22 kW Whole-Home Stand | Natural gas or liquefied petroleum gas | 240 V | 22 kW | Built-in cellular; Mobile Link premium subscription required for remote monitoring and control |
| Generac 26 kW Whole-Home Stand | Natural gas or propane | 240 V | 26 kW | Built-in cellular; some Mobile Link features require a premium subscription |
| Generac 10 kW Whole Home Stand | Propane (LPG) or natural gas | 120 V | 10,000 W | Built-in cellular; Mobile Link premium subscription required for remote monitoring and control |
| Generac 14 kW Whole Home Stand | Natural gas or propane | 240 volts | 14,000 watts | Built-in cellular |
| Generac 28 kW Whole Home Stand | Natural gas | 240 V | 28 kW | Built-in cellular; Mobile Link app |
| Westinghouse WGen11500TFc Tri- | — | — | — | — |
| Westinghouse WGen5300DFcv Dual | Gasoline or propane | 120/240 V selector | — | — |
| Generac 10kW Whole-Home Standb | Natural gas or LP | 120 volts | — | Built-in cellular; Mobile Link app |
| Honeywell 14 kW Home Standby G | Natural gas or propane | 120 V | 14 kW | — |
| Generac 18 kW Whole-Home Stand | Natural gas or propane | 240 V | 18 kW | Built-in cellular; Mobile Link app |
| Generac 26 kW Whole-Home Stand | Propane or natural gas | 240 V | 26 kW | Built-in cellular; Mobile Link premium subscription required |
| Generac 14 kW Whole-Home Stand | Liquid propane or natural gas | 240 V | 14 kW | Built-in cellular; Mobile Link app |
| Generac 28 kW Whole-Home Stand | LP or natural gas | 240 V | 28 kW | Built-in cellular; Mobile Link premium subscription required |
More Details on Our Top Picks
Generac 22 kW Whole-Home Standby Generator with Cellular Connectivity
I’d put this 22 kW model first for homeowners seeking substantial automatic backup without moving to the heavier 26 kW unit. It runs on natural gas or propane, detects utility outages, and pairs cellular monitoring with cold-start support and oil-level sensors—useful features for keeping tabs on a standby system between outages. Its 451-pound weight and fully enclosed construction mean installation still calls for proper site planning, not a casual placement. Compared with the Generac 24 kW model with a 200-amp transfer switch, this version provides less stated capacity and doesn’t list a transfer switch in the supplied product details. Some app functions also require a premium subscription. I’d choose it when the generator’s capacity and monitoring matter more than an included switch.
Pros:- Automatically detects utility outages and starts backup power
- Runs on natural gas or propane
- Built-in cellular connectivity supports remote monitoring and control
- Oil-level sensors and cold-start support help with standby readiness
Cons:- Some Mobile Link app features require a premium subscription
- At 451 pounds, it needs a planned, professional installation
- No transfer switch is listed in the supplied product details
Best for: Homeowners who want 22 kW of automatic backup, cellular status monitoring, and a choice of natural gas or propane.
Not ideal for: Buyers who need a listed, included 200-amp automatic transfer switch or want to avoid a subscription for some app features.
- Power output:22 kW
- Fuel:Natural gas or propane
- Voltage:240 V
- Frequency:60 Hz
- Connectivity:Built-in cellular; some Mobile Link features require a premium subscription
- Weight:451 lb
- Dimensions:46.4 × 26.3 × 30.7 in
- Warranty:5-year limited
Our verdict“Choose this 22 kW model for a well-equipped standby system with remote monitoring, provided you can source a suitable transfer switch separately.”
Generac 24 kW Whole-Home Standby Generator with 200-Amp Transfer Switch and Cellular Connectivity
This package pairs 24 kW of output with a listed 200-amp automatic transfer switch, making it the clearest fit here for buyers who want the switching component included in the same product choice. It runs on natural gas or propane and starts when utility service fails; cellular monitoring adds a way to check status remotely, though some app features require a premium subscription. Against the 22 kW Generac with cellular connectivity, this model offers more stated capacity and includes the switch, but it weighs 461 pounds and retains the same subscription caveat. It may suit homes with greater backup demands, but a generator’s kW rating alone doesn’t determine whether it can run every appliance at once. I’d have a qualified installer size the system and confirm the transfer-switch fit.
Pros:- 24 kW output exceeds the listed 22 kW Generac options in this batch
- Includes a listed 200-amp automatic transfer switch
- Runs on natural gas or propane
- Cellular monitoring, oil-level sensing, and cold-start support aid standby oversight
Cons:- Some Mobile Link app features require a premium subscription
- At 461 pounds, handling and installation require planning
- The product data does not establish which specific household loads it can support simultaneously
Best for: Homeowners seeking a higher-capacity standby unit with a listed 200-amp automatic transfer switch and cellular monitoring.
Not ideal for: Buyers with modest backup loads or anyone unwilling to pay for a subscription to access some remote app features.
- Power output:24 kW
- Fuel:Propane or natural gas
- Transfer switch:200 A automatic
- Voltage:240 V
- Connectivity:Built-in cellular; some Mobile Link features require a premium subscription
- Weight:461 lb
- Dimensions:46.4 × 26.3 × 30.7 in
- Warranty:5-year limited
Our verdict“Pick this package if you want 24 kW and a listed 200-amp automatic transfer switch together, after confirming capacity with an installer.”
Generac 22 kW Whole-Home Standby Generator with Transfer Switch and Cellular Connectivity
For shoppers set on 22 kW, this version’s distinguishing advantage is the included automatic 200-amp transfer switch. That makes it a more complete package than the similarly rated Generac 22 kW model that lists cellular connectivity but no switch in its supplied details. It also offers natural gas or liquefied petroleum gas, outage detection, cold-start support, and cellular monitoring. The tradeoff is straightforward: it provides less stated output than the 24 kW Generac package, so buyers with larger expected loads should compare those capacities with an installer rather than assume either rating will cover every circuit. Remote app monitoring and control require a premium subscription, and the 451-pound enclosure adds installation demands. I’d favor this version when the 22 kW rating fits and having the transfer switch specified matters.
Pros:- Includes an automatic 200-amp transfer switch
- Automatically detects outages and starts backup power
- Accepts natural gas or liquefied petroleum gas
- Cellular monitoring, oil-level monitoring, and cold-start support
Cons:- Lower stated output than the 24 kW Generac package
- Some Mobile Link app functions require a premium subscription
- The 451-pound unit requires a suitable installation site and handling plan
Best for: Homeowners whose load plan suits 22 kW and who want a listed 200-amp automatic transfer switch included with the generator.
Not ideal for: Households that need more than 22 kW of stated output or buyers who want remote app functions without a premium subscription.
- Power output:22 kW
- Fuel:Natural gas or liquefied petroleum gas
- Transfer switch:Automatic, 200 A
- Voltage:240 V
- Frequency:60 Hz
- Connectivity:Built-in cellular; Mobile Link premium subscription required for remote monitoring and control
- Weight:451 lb
- Warranty:5-year limited
Our verdict“Choose this package over the switch-free 22 kW option when 22 kW is a suitable capacity and you want the 200-amp transfer switch specified.”
Generac 26 kW Whole-Home Standby Generator with Cellular Connectivity
At 26 kW, this is the highest-output option in this batch, aimed at homes whose planned backup demand exceeds what the 22 kW and 24 kW Generac models provide on paper. It automatically starts during an outage, runs on natural gas or propane, and includes cellular monitoring, oil-level sensors, and cold-start support. The capacity comes with a meaningful physical tradeoff: at 524 pounds, it is substantially heavier than the 22 kW models and the 24 kW package. Unlike that 24 kW product, this listing does not specify an included transfer switch, so buyers should verify what the installation requires. Some app features also require a premium subscription. I’d put it on the shortlist for larger planned loads, but have an installer confirm load requirements and switch compatibility before choosing the extra capacity.
Pros:- Highest stated output among the five products in this batch
- Runs on natural gas or propane
- Automatic outage detection and starting
- Cellular monitoring and oil-level sensors support remote oversight
Cons:- At 524 pounds, it is the heaviest option in this batch
- Some Mobile Link app features require a premium subscription
- No included transfer switch is specified in the supplied product details
Best for: Owners of larger homes who have an installer-confirmed backup load that calls for more output than the 22 kW or 24 kW options.
Not ideal for: Buyers with smaller backup needs, limited installation access, or a requirement for a transfer switch explicitly included in the product package.
- Power output:26 kW
- Fuel:Natural gas or propane
- Voltage:240 V
- Connectivity:Built-in cellular; some Mobile Link features require a premium subscription
- Weight:524 lb
- Dimensions:46.4 × 26.3 × 30.7 in
- Enclosure materials:Aluminum and steel
- Warranty:5-year limited
Our verdict“Choose this 26 kW unit for a larger, installer-verified backup load if you can accommodate its weight and confirm the transfer-switch arrangement.”
Generac 10 kW Whole Home Standby Generator with Transfer Switch and Cellular Connectivity
This 10 kW standby generator is the lower-capacity choice in this group, and its automatic 16-circuit transfer switch makes the intended setup more specific than the higher-output Generac models. It can automatically supply backup power and runs on natural gas or propane, while cellular connectivity provides remote monitoring and control; some Mobile Link features require a premium subscription. Compared with the 22 kW Generac with a 200-amp transfer switch, this model has less than half the stated output and a 16-circuit switch rather than a 200-amp unit. That may suit a carefully selected set of household circuits, but it is not the pick for buyers expecting broad whole-home coverage without load planning. Its 384-pound weight is lower than the other units here, yet still calls for installation logistics.
Pros:- Includes an automatic 16-circuit transfer switch
- Runs on propane or natural gas
- Cellular connectivity supports remote monitoring and control
- Lowest stated weight among the five options in this batch
Cons:- 10 kW output is well below the 22 kW, 24 kW, and 26 kW options
- A 16-circuit switch may not suit buyers seeking broader circuit coverage
- Some Mobile Link features require a premium subscription
Best for: Homeowners who want automatic backup for a planned selection of up to 16 circuits and whose installer confirms 10 kW fits those loads.
Not ideal for: Buyers seeking higher-capacity backup or expecting to power the entire home without prioritizing circuits and managing demand.
- Power output:10,000 W
- Fuel:Propane (LPG) or natural gas
- Voltage:120 V
- Frequency:60 Hz
- Transfer switch:Automatic, 16 circuits
- Connectivity:Built-in cellular; Mobile Link premium subscription required for remote monitoring and control
- Weight:384 lb
- Warranty:5-year limited
Our verdict“Choose this 10 kW package for installer-planned essential-circuit backup, not for a high-demand whole-home load.”
Generac 14 kW Whole Home Standby Generator with Cellular Connectivity
I’d put this 14 kW Generac on the shortlist for households that want an automatic, permanently installed backup without stepping up to a much larger output. It detects an outage and runs on natural gas or propane, giving fuel flexibility that the 28 kW Generac lacks, since that model is listed for natural gas. Built-in cellular connectivity adds remote monitoring, while oil-level sensors and cold-start support address readiness between outages.
The tradeoff is that 14 kW is a more limited capacity choice than the 28 kW model, so buyers should match it to their essential loads and have an installer confirm the fit. Cellular updates and alerts also require a premium subscription, and at 391 pounds it is not a light installation. I’d choose it over a portable Westinghouse if automatic whole-home backup matters more than portability.
Pros:- Automatically detects outages and starts backup power
- Runs on natural gas or propane
- Built-in cellular connectivity supports remote monitoring and control
- Oil-level sensors and cold-start support help with readiness
Cons:- Mobile Link updates and maintenance alerts require a premium subscription
- 14 kW output may not cover a home’s full load without careful load planning
- 391-pound weight calls for a planned, professional installation
Best for: Homeowners seeking an automatically starting standby unit with natural-gas or propane compatibility and a moderate output target.
Not ideal for: Households expecting to run many large loads at once, or buyers who want remote alerts without a recurring subscription.
- Power output:14,000 watts
- Fuel:Natural gas or propane
- Voltage:240 volts
- Frequency:60 hertz
- Connectivity:Built-in cellular
- Weight:391 pounds
- Dimensions:46.4 × 26.3 × 30.7 inches
- Material:Stainless steel
Our verdict“Choose this Generac if you want automatic standby operation and fuel flexibility, but confirm that 14 kW suits your household’s load plan.”
Generac 28 kW Whole Home Standby Generator with Cellular Connectivity
Among the standby options here, this Generac makes the strongest case for homes with substantial backup-power demands: its 28 kW output is double the 14 kW Generac’s rating. Automatic outage detection, natural-gas operation, and built-in cellular monitoring make it a permanent backup system rather than a portable unit that needs to be rolled out and connected. Automatic voltage regulation and low-oil shutdown add useful operating protections, and the five-year limited warranty is specified in the product data.
That capacity comes with a real installation burden: it weighs 524 pounds, and remote Mobile Link features require a premium subscription. It is also listed for natural gas, unlike the 14 kW model’s natural-gas-or-propane setup. I’d favor this over the Westinghouse WGen11500TFc when higher standby capacity and automatic operation outweigh portability and tri-fuel choice.
Pros:- 28 kW output supports higher residential backup loads than the 14 kW Generac
- Automatically detects outages and starts backup power
- Built-in cellular monitoring provides performance and maintenance updates
- Includes automatic voltage regulation, low-oil shutdown, and a five-year limited warranty
Cons:- Mobile Link remote features require a premium subscription
- 524-pound weight makes installation planning and handling more demanding
- Listed for natural gas rather than the dual-fuel setup offered by the 14 kW Generac
Best for: Owners of larger homes who need high standby output and have a natural-gas connection and suitable installation site.
Not ideal for: Buyers with modest backup needs, no natural-gas supply, or a preference for a portable generator they can move and store.
- Power output:28 kW
- Fuel:Natural gas
- Voltage:240 V
- Frequency:60 Hz
- Connectivity:Built-in cellular; Mobile Link app
- Weight:524 lbs
- Dimensions:46.4 × 26.3 × 30.7 in
- Warranty:5-year limited warranty
Our verdict“Choose this model for high-load automatic backup where natural gas is available and the site can accommodate a heavy standby unit.”
Westinghouse WGen11500TFc Tri-Fuel Portable Generator with CO Sensor
This Westinghouse is the lineup’s portable alternative for buyers who need substantial backup output but do not want a permanently installed standby system. It delivers up to 11,500 running watts on gasoline and can use gasoline, propane, or natural gas, giving it broader fuel choice than the natural-gas-only Generac 28 kW. Remote and push-button electric start, a CO sensor, and low-oil shutdown add convenience and safety features; its L14-30R and 14-50R outlets support transfer-switch connections.
It is not equivalent to an automatic whole-house standby generator: the transfer switch is sold separately, and the unit must be positioned and connected for use. Its 550cc engine and 9.5-gallon tank also make it bulky to move despite the wheels and handle. I’d choose it over a Generac standby only when portability and tri-fuel operation matter more than automatic outage response.
Pros:- Runs on gasoline, propane, or natural gas
- Provides up to 11,500 running watts on gasoline
- Remote and push-button electric starting
- CO sensor and automatic low-oil shutdown
Cons:- Transfer switch is sold separately, and the generator does not provide automatic standby operation
- Large engine and 9.5-gallon tank make transport and storage more demanding
- Gasoline runtime is specified at 25% load, so heavier loads reduce the stated runtime
Best for: Homeowners who want a portable, tri-fuel backup source with transfer-switch-compatible outlets and can manage setup during an outage.
Not ideal for: Buyers who need unattended automatic startup or a permanently installed whole-house standby system.
- Fuel types:Gasoline, propane, natural gas
- Running wattage:Up to 11,500 watts
- Peak wattage:Up to 14,500 watts
- Engine:550cc, 4-stroke OHV
- Gas tank capacity:9.5 gallons
- Runtime:Up to 19 hours at 25% load
- Outlets:L14-30R 30A and 14-50R 50A
- Warranty:3-year limited residential warranty
Our verdict“Pick the WGen11500TFc if you value portable tri-fuel backup over the automatic operation of a dedicated standby generator.”
Westinghouse WGen5300DFcv Dual-Fuel Portable Generator with CO Sensor
The WGen5300DFcv is the smaller portable pick for buyers prioritizing essential circuits rather than whole-house coverage. It produces 5,300 running watts on gasoline or 4,800 on propane, and its 120/240 V selector plus L14-30R outlet can support a transfer-switch connection. Compared with the larger Westinghouse WGen11500TFc, it has a smaller engine and tank, making its role more focused on a limited backup plan than broad household loads. A CO sensor and automatic low-oil shutdown add meaningful safeguards.
The limits are just as relevant: its 4.7-gallon tank supports up to 14.5 hours of runtime as specified, but runtime varies with load, and this model does not start automatically when utility power fails. The product data lists gasoline and propane, not the WGen11500TFc’s tri-fuel range. I’d skip it if the goal is unattended, whole-house standby power.
Pros:- Runs on gasoline or propane
- Offers 5,300 running watts on gasoline and 4,800 on propane
- Includes RV-ready and transfer-switch-ready 30A outlets
- CO sensor and automatic low-oil shutdown are included
Cons:- Portable operation requires setup and does not automatically respond to an outage
- 4.7-gallon fuel tank limits capacity for extended operation
- Lower output than the WGen11500TFc restricts the number of loads it can support
Best for: Households planning to power selected essential circuits with a portable generator and a compatible transfer-switch setup.
Not ideal for: Owners seeking automatic whole-house backup, high simultaneous loads, or natural-gas operation.
- Fuel:Gasoline or propane
- Running wattage:5,300 W on gasoline; 4,800 W on propane
- Peak wattage:6,500 W on gasoline; 5,800 W on propane
- Engine:274cc 4-stroke OHV
- Fuel tank capacity:4.7 gallons
- Runtime:Up to 14.5 hours
- Voltage:120/240 V selector
- Warranty:3-year limited service, labor, and parts coverage
Our verdict“Choose this Westinghouse for portable, essential-circuit backup, not for automatic whole-house standby coverage.”
Generac 10kW Whole-Home Standby Generator with Cellular Monitoring
This 10 kW Generac is the lower-output automatic standby option for homeowners who want outage response without choosing the lineup’s larger 14 kW or 28 kW models. It detects a loss of utility power and runs from a natural-gas or LP fuel connection, while cellular monitoring provides remote status and control through Mobile Link. Oil-level sensors, cold-start improvements, and a five-year limited warranty support a system intended to remain installed and ready rather than stored for occasional use.
The 10 kW rating makes load planning especially important: it is a narrower fit than the 14 kW Generac and should not be treated as a guarantee that every household load can run together. Remote features require a premium subscription, and the 344-pound unit still needs a suitable permanent site. Compared with either Westinghouse portable, it offers automatic standby operation, but gives up portability and requires installation.
Pros:- Automatically detects an outage and starts backup power
- Accepts natural gas or LP
- Built-in cellular connectivity supports remote monitoring and control
- Oil-level sensors, cold-start improvements, and a five-year limited warranty
Cons:- 10 kW output requires careful load planning and may not suit larger household demands
- Mobile Link remote features require a premium subscription
- At 344 pounds, it requires a suitable permanent installation location
Best for: Homeowners with a defined, moderate backup-load plan who want automatic operation and a natural-gas or LP connection.
Not ideal for: Households with high simultaneous electrical demands, or buyers who need a portable generator they can move between locations.
- Wattage:10,000 watts
- Fuel:Natural gas or LP
- Voltage:120 volts
- Ignition system:Electronic
- Connectivity:Built-in cellular; Mobile Link app
- Weight:344 pounds
- Dimensions:46.3 × 24.6 × 30.7 inches
- Warranty:5-year limited warranty
Our verdict“Choose this Generac when automatic backup is the priority and a verified 10 kW load plan covers your household’s needs.”
Honeywell 14 kW Home Standby Generator with 16-Circuit Transfer Switch
The Honeywell 14 kW is a practical fit when the goal is to protect chosen household circuits rather than treat every load as available at once. Its included 16-circuit transfer switch makes that scope explicit: coverage depends on which circuits are selected, unlike the Generac 14 kW with a 200-amp transfer switch. Automatic startup and compatibility with natural gas or propane suit homes with an established fuel supply, while the aluminum enclosure and included composite pad simplify planning for an outdoor installation on soil. The tradeoff is modest capacity compared with the 18, 26, and 28 kW Generac options, so larger homes or heavy simultaneous loads may need careful load planning. It also lacks the cellular monitoring listed on those Generac models, and professional installation and fuel setup are still required.
Pros:- Automatically starts when utility power is lost
- Runs on natural gas or propane
- Includes a 16-circuit transfer switch for defined circuit coverage
- Aluminum enclosure and composite mounting pad support outdoor installation
Cons:- 14 kW capacity may require load prioritization for larger homes
- Backup coverage depends on circuit selection and configuration
- Installation and fuel-supply setup are required
Best for: Homeowners who want automatic backup for a planned set of up to 16 selected circuits and have natural gas or propane available.
Not ideal for: Households seeking broad whole-home coverage without prioritizing circuits, or buyers who want built-in cellular monitoring.
- Power output:14 kW
- Fuel:Natural gas or propane
- Voltage:120 V
- Frequency:60 Hz
- Transfer switch:16-circuit
- Enclosure:Aluminum
- Dimensions:48 × 25 × 29 in
- Warranty:3-year limited
Our verdict“Choose this Honeywell if a clearly defined 16-circuit backup plan matters more than higher output or cellular monitoring.”
Generac 18 kW Whole-Home Standby Generator with Cellular Monitoring
The 18 kW Generac sits between the 14 kW options and the larger 26 and 28 kW units, giving buyers more capacity headroom without jumping to the lineup’s highest output. Its built-in cellular connection supports app monitoring and control, while oil-level sensors and cold-start improvements address readiness rather than just outage response. That combination suits owners who want to check generator status remotely and have a natural gas or propane supply. Compared with the Honeywell 14 kW, it offers higher listed output and connected monitoring, but the Honeywell includes a composite pad and a specified 16-circuit switch. The app’s real-time monitoring and alerts require a Mobile Link premium subscription, and at 426 pounds this is not a light installation. Buyers also need to confirm transfer-switch arrangements, since one is not specified in the supplied product details.
Pros:- 18 kW output provides more capacity than the 14 kW models
- Built-in cellular supports Mobile Link monitoring and control
- Oil-level sensors and cold-start improvements support readiness
- Compatible with ecobee by Generac thermostats and Generac PWRcell systems
Cons:- Premium subscription is required for remote monitoring and maintenance alerts
- Heavy at 426 pounds, adding handling and installation demands
- Transfer-switch inclusion is not specified in the supplied product details
Best for: Owners of mid-size homes who want more output than a 14 kW unit and value remote status checks and readiness features.
Not ideal for: Buyers who want a clearly specified included transfer switch, prefer to avoid subscription-based app features, or need the highest capacity in this group.
- Power output:18 kW
- Fuel:Natural gas or propane
- Voltage:240 V
- Connectivity:Built-in cellular; Mobile Link app
- Weight:426 lb
- Dimensions:46.4 × 26.3 × 30.7 in
- Materials:Aluminum and stainless steel
- Compatibility:ecobee by Generac thermostats and Generac PWRcell battery systems
Our verdict“Pick this model for a connected step up from 14 kW, provided you confirm the transfer-switch setup and accept the subscription requirement.”
Generac 26 kW Whole-Home Standby Generator with 200 Amp Transfer Switch and Cellular Connectivity
With 26 kW output and a listed 200 A automatic transfer switch, this Generac is the clearest fit here for buyers seeking substantial residential backup with the switch included. It offers considerably more capacity than the 18 kW model, while stopping short of the 28 kW option for homes that do not need the lineup’s maximum stated output. Cellular connectivity, oil-level monitoring, and cold-start support add remote oversight and readiness features; the sloped roof and rear intake are intended to help limit snow or ice intrusion. Those advantages come with a large, 524-pound unit and an app experience that requires a Mobile Link premium subscription. Its 26 kW rating alone cannot establish which appliances can run together, so buyers still need a load assessment and installation plan. The 14 kW Generac is a more restrained choice for lower-demand homes.
Pros:- 26 kW output exceeds the 18 kW model’s capacity
- Includes a 200 A automatic transfer switch
- Cellular connectivity supports remote monitoring and control
- Oil monitoring, cold-start support, and snow-conscious housing features support readiness
Cons:- At 524 pounds, it requires substantial handling and installation planning
- Mobile Link app monitoring and control require a premium subscription
- High output may be unnecessary for homes with modest backup loads
Best for: Owners of larger homes who need substantial standby capacity and want a 200-amp automatic transfer switch included.
Not ideal for: Smaller homes with limited backup loads, or buyers who want to avoid a heavy installation and subscription-based app monitoring.
- Power output:26 kW
- Fuel:Propane or natural gas
- Voltage:240 V
- Frequency:60 Hz
- Transfer switch:200 A automatic
- Connectivity:Built-in cellular; Mobile Link premium subscription required
- Weight:524 lb
- Warranty:5-year limited
Our verdict“Choose this 26 kW package when high output and an included 200-amp switch matter more than minimizing installation demands.”
Generac 14 kW Whole-Home Standby Generator with 200 Amp Transfer Switch and Cellular Connectivity
This Generac pairs 14 kW output with a 200-amp automatic transfer switch and built-in cellular connectivity, making it a more integrated package than the Honeywell 14 kW, whose switch is specified for 16 circuits. The larger switch rating does not by itself guarantee that every household load can run at once; the home’s electrical setup and generator capacity still govern coverage. Automatic startup, oil-level sensors, cold-start improvements, and housing features aimed at limiting snow and ice intrusion give it a readiness-focused profile for outdoor residential use. It also runs on liquid propane or natural gas. The main compromise is that the app’s real-time updates and maintenance alerts require a Mobile Link premium subscription. At 391 pounds, it is lighter than the 18 and 26 kW Generacs listed here, yet still calls for professional handling and installation.
Pros:- Includes a 200-amp automatic transfer switch
- Automatically detects outages and starts backup power
- Runs on liquid propane or natural gas
- Oil sensors, cold-start improvements, and snow-conscious design features support readiness
Cons:- 14 kW output may not support larger simultaneous household loads
- Real-time app updates and maintenance alerts require a premium subscription
- Weighs 391 pounds and requires installation planning
Best for: Homeowners who want a 14 kW standby unit with a specified 200-amp automatic transfer switch and cellular monitoring capability.
Not ideal for: Buyers who need greater generator output, want app alerts without a subscription, or prefer a lighter, simpler installation.
- Power output:14 kW
- Fuel:Liquid propane or natural gas
- Voltage:240 V
- Frequency:60 Hz
- Transfer switch:200 A automatic
- Connectivity:Built-in cellular; Mobile Link app
- Weight:391 lb
- Material:Stainless steel
Our verdict“Choose this Generac over the Honeywell 14 kW if a 200-amp switch and cellular capability matter more than avoiding a subscription.”
Generac 28 kW Whole-Home Standby Generator with Transfer Switch and Cellular Monitoring
The 28 kW Generac has the highest stated output among these five, so it is the capacity-first choice for homes with substantial backup demands. It runs on LP or natural gas, starts automatically when utility power fails, and adds cellular monitoring, oil-level sensors, and cold-weather features. Its sloped roof and rear intake are designed to reduce snow or ice intrusion, which may suit exposed outdoor installations. Compared with the 26 kW Generac, the extra stated capacity may offer more headroom, but this listing does not specify a transfer-switch amperage or provide enough information to determine which loads can run simultaneously. Like the other connected Generacs, Mobile Link monitoring requires a premium subscription. At 524 pounds, it also demands careful site and installation planning. Buyers should match the output to a professional load assessment rather than assuming the largest rating is necessary.
Pros:- 28 kW is the highest stated output among these five products
- Runs on LP or natural gas and starts automatically during outages
- Built-in cellular supports remote monitoring and control
- Cold-weather features and a 5-year limited warranty are specified
Cons:- Mobile Link remote monitoring requires a premium subscription
- Heavy at 524 pounds, requiring careful installation planning
- Transfer-switch amperage is not specified in the supplied product details
Best for: Owners of large homes with high backup-load demands who want the highest stated generator output in this group.
Not ideal for: Households with modest power needs, buyers who require a clearly specified transfer-switch rating, or anyone seeking to avoid subscription costs and heavy installation logistics.
- Power output:28 kW
- Running wattage:28,000 W
- Fuel:LP or natural gas
- Voltage:240 V
- Frequency:60 Hz
- Connectivity:Built-in cellular; Mobile Link premium subscription required
- Weight:524 lb
- Warranty:5-year limited
Our verdict“Choose this model when a load assessment supports the highest listed capacity and you are comfortable confirming the transfer-switch details and subscription terms.”
How We Picked
I ranked these options by how well their stated configuration fits a whole-home standby purchase: published capacity, whether a transfer switch is included, the stated switch rating or circuit count, and the monitoring or fuel features described in the product name. I gave more weight to combinations that make the installation scope clearer and provide a useful capacity range for a typical home backup plan. Models with similar output were separated by the equipment bundled with them rather than by assuming that a higher wattage alone makes one a better choice.
The lineup includes both permanently installed standby units and portable generators, so I treated them as different solutions rather than direct equivalents. The Westinghouse portable models rank below the standby systems for buyers seeking automatic whole-home backup, though their fuel flexibility may suit other needs. Product names do not establish every detail of compatibility, installation cost, fuel consumption, or supported loads; I would verify those points with the manufacturer and a qualified electrician or generator installer before purchase.
| whole house standby generator | Connectivity |
|---|---|
| Generac 22 kW Whole-Home Stand | Built-in cellular; some Mobile Link features require a premium subscription |
| Generac 24 kW Whole-Home Stand | Built-in cellular; some Mobile Link features require a premium subscription |
| Generac 22 kW Whole-Home Stand | Built-in cellular; Mobile Link premium subscription required for remote monitoring and control |
| Generac 26 kW Whole-Home Stand | Built-in cellular; some Mobile Link features require a premium subscription |
| Generac 10 kW Whole Home Stand | Built-in cellular; Mobile Link premium subscription required for remote monitoring and control |
| Generac 14 kW Whole Home Stand | Built-in cellular |
| Generac 28 kW Whole Home Stand | Built-in cellular; Mobile Link app |
| Westinghouse WGen11500TFc Tri- | — |
| Westinghouse WGen5300DFcv Dual | — |
| Generac 10kW Whole-Home Standb | Built-in cellular; Mobile Link app |
| Honeywell 14 kW Home Standby G | — |
| Generac 18 kW Whole-Home Stand | Built-in cellular; Mobile Link app |
| Generac 26 kW Whole-Home Stand | Built-in cellular; Mobile Link premium subscription required |
| Generac 14 kW Whole-Home Stand | Built-in cellular; Mobile Link app |
| Generac 28 kW Whole-Home Stand | Built-in cellular; Mobile Link premium subscription required |
Factors to Consider When Choosing Whole House Standby Generators
Choosing among whole house standby generators starts with the home’s electrical plan, not the product list. These broader checks can prevent a mismatch between the generator, transfer equipment, fuel supply, and the loads you actually want to run.
Size for Starting Loads, Not Just Everyday Use
Make a list of the appliances you want running during an outage, then distinguish their normal operating draw from the higher demand some motors need when starting. Air conditioners, well pumps, and other motor-driven equipment can create brief peaks that a casual estimate misses. Ask an electrician to calculate both simultaneous loads and starting surges before choosing a capacity tier. A generator that is too small may require you to shed loads, while an oversized model can add installation and fuel demands without helping your actual backup plan. Decide whether you want near-whole-home coverage or a deliberately limited set of circuits. That choice is more useful than picking the biggest wattage on the page.
Check What the Transfer-Switch Package Actually Covers
A generator listing that mentions a transfer switch does not automatically answer every installation question. Confirm the switch’s amperage or circuit capacity, compatibility with your electrical panel, and whether the listed package includes the equipment your installer needs. A 200-amp switch may suit a different panel arrangement from a 16-circuit switch, and neither label alone proves that every household load will run at once. Ask whether load management or additional switching equipment is needed for large appliances. Also confirm whether installation, permits, wiring, and commissioning are separate from the product purchase. This check can reveal a more meaningful cost difference than comparing generator output alone.
Match Fuel Supply to Outage Length and Local Availability
Many permanently installed standby generators are configured for a home fuel connection, but the product name alone may not specify the exact fuel setup or consumption. Confirm the compatible fuel type, required supply pressure, and whether the existing service can support the generator alongside household demand. For longer outages, ask an installer how fuel availability and consumption change under the loads you expect to run. Portable dual- or tri-fuel models can provide more fuel choices, yet they require manual setup and are not a direct replacement for an automatic standby system. Local restrictions and safe placement rules also affect what is practical. Choose around the fuel infrastructure you can reliably maintain, not a feature label in isolation.
Treat Monitoring as a Convenience Layer
Cellular monitoring can make it easier to check operating status and receive information when you are away, but it does not make a generator self-maintaining. Ask which functions are included, whether a service plan or cellular coverage is required, and what notifications the system provides. Monitoring is most useful when it complements a clear maintenance schedule and a local service provider. Do not pay extra for connectivity before confirming that the unit’s capacity and transfer setup fit your home. If outages are brief and you can check the equipment in person, monitoring may matter less than installation support. If the property is vacant for long periods, remote status information may carry more weight.
Plan for Placement, Noise, and Ongoing Service
Standby generators need an appropriate outdoor location with safe clearances, access for service, and a route for electrical and fuel connections. Local codes, property lines, windows, and neighborhood noise rules may narrow the available locations. A larger unit can be harder to place, so settle the site plan before committing to a capacity upgrade. Ask installers about routine service intervals, parts availability, warranty terms, and who handles startup checks. A convenient service relationship can matter more over the life of the system than a small difference in listed features. Include these operating realities in the decision alongside output and included hardware.
Frequently Asked Questions
How do I decide between a 10 kW and a 22 kW standby generator?
I would base the choice on a documented load calculation rather than the size of the house alone. A 10 kW unit may fit a plan centered on selected essentials, while a 22 kW model provides more headroom for multiple loads, subject to the home’s electrical design. List appliances that must run together and flag equipment with large starting surges. Then ask an electrician whether load management can make a smaller generator practical. If you expect to run major heating, cooling, or pumping equipment during outages, confirm the required capacity before choosing.
Does a generator listing without a transfer switch include everything needed for installation?
Not necessarily. A listing that names cellular monitoring but does not mention a transfer switch should not be treated as a complete installation package. Confirm the exact included components, the switch type and rating needed for your panel, and whether any load-management equipment is required. Installation may also involve wiring, permits, fuel work, and commissioning that are not part of the generator package. Get a written equipment and labor scope from an installer before comparing options.
Is a portable Westinghouse model a substitute for a whole-house standby generator?
It can provide backup power, but it serves a different role. The Westinghouse models in this roundup are portable and offer dual- or tri-fuel flexibility, while the Generac and Honeywell standby models are designed as permanently installed systems with transfer-switch configurations listed for some packages. Portable operation generally calls for more hands-on setup and a separate plan for safely connecting selected loads. If automatic backup is the priority, focus on a properly installed standby system. If portability and fuel choice matter more, compare the portable unit’s output and connection requirements with your intended loads.
Is a 200-amp transfer switch enough to power every circuit in my home?
The switch rating alone does not promise that every circuit can operate at once. The generator’s output, panel configuration, appliance demand, and any load-management controls all affect what can run during an outage. A 200-amp switch describes a part of the electrical setup, not the generator’s capacity. Have an electrician map your desired circuits and identify any large loads that need to be sequenced or excluded. This avoids assuming that a switch rating and generator output are interchangeable measures.
When does it make sense to choose a 26 kW or 28 kW model instead of a 22–24 kW option?
A higher-capacity model may make sense when a load calculation shows that multiple large appliances need to operate together, or when the home has equipment that creates demanding startup loads. It is less persuasive if your backup plan covers only a few essential circuits. Larger capacity can affect fuel demand, site planning, and installation requirements, so ask for those implications in writing. Compare the 26–28 kW units with the 22–24 kW choices using the same load assumptions. The right step up is the one that covers your planned loads without paying for capacity your electrical plan cannot use.
Conclusion
For the broadest fit in this lineup, I’d choose the Generac 22 kW with transfer switch and cellular connectivity as best overall, since its listed package combines mid-to-high capacity with included switching hardware. For value, I’d start with the Generac 10 kW with transfer switch and cellular connectivity if a professional load plan confirms that essential-circuit coverage is enough. The Generac 28 kW with transfer switch and cellular monitoring is my premium pick for homes with demanding loads, subject to installer confirmation of fuel and site requirements. Beginners may find the package with a clearly listed transfer switch easier to compare, but should still rely on an installer for sizing and commissioning. For buyers who prioritize fuel flexibility and portability over automatic whole-home operation, the Westinghouse tri-fuel portable is the specific-use option; for larger homes seeking automatic backup, compare the 24–28 kW standby models against a formal load calculation before deciding.
