AIThis post was created with the assistance of artificial intelligence (AI).

Finding the right backup generator for your whole house involves balancing power output, fuel type, ease of use, and budget. The top choice for overall reliability is the Generac Guardian 26kW, thanks to its seamless automatic operation and WiFi monitoring. For portable options, the Westinghouse 18000 Peak Watt stands out with transfer switch readiness and remote start, perfect for temporary needs. The major tradeoffs often involve size, installation complexity, and cost. Continue reading to explore detailed reviews and help you identify the best fit for your home.

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14
compared
6
brands
999 cc Westinghouse V-Twin OHV
max engine
Which backup generators whole house should you buy?
★ Top Pick
Westinghouse 18000 Peak Watt H
Best Overall for Large Home Backup and Heavy-Duty Power
High power output suitable for entire home and large appliances
See on Amazon →
Homeowners needing flexible fuel options and long runtime for emergency preparedness
Westinghouse 13500 Peak Watt T
Tri-fuel capability offers versatile fuel options
View on Amazon →
Homeowners with high power demands or professionals requiring a dependable portable generator for extended jobs
Westinghouse 14500 Peak Watt D
Powerful dual fuel capability for versatile use
View on Amazon →
Homeowners wanting a reliable, automatic whole-house generator with smart remote monitoring
Generac Guardian 14kW Home Gen
Wi-Fi connectivity for remote monitoring
View on Amazon →
Homeowners or outdoor enthusiasts needing a versatile, safe backup generator for various fuels
Generac 12,500 Starting Watt T
Tri-fuel capability for flexible fuel sourcing
View on Amazon →
Engine — compared
Westinghouse 13500 Peak Watt T500cc Westinghouse 4-Stroke OHV
Westinghouse 14500 Peak Watt D550cc 4-Stroke OHV Westinghouse Engine
Generac 12,500 Starting Watt T500cc Generac OHV
Westinghouse 18000 Peak Watt H713cc V-Twin OHV
Westinghouse 12500 Watt Dual F457cc 4-Stroke OHV
Westinghouse 28000 Peak Watt T999 cc Westinghouse V-Twin OHV
Westinghouse 12000 Peak Watt D457cc 4-Stroke OHV
Pros & cons at a glance
Westinghouse 13500 Peak Watt T
✓ Tri-fuel capability offers versatile fuel options
✗ Relatively heavy and bulky, limiting portability
Westinghouse 14500 Peak Watt D
✓ Powerful dual fuel capability for versatile use
✗ Heavy and difficult to transport
Generac Guardian 14kW Home Gen
✓ Wi-Fi connectivity for remote monitoring
✗ Requires professional installation
Generac 12,500 Starting Watt T
✓ Tri-fuel capability for flexible fuel sourcing
✗ Heavy weight, at 219 lbs
Generac Guardian 26kW Home Gen
✓ Remote Wi-Fi monitoring for convenience
✗ Requires professional installation
Westinghouse 18000 Peak Watt H
✓ High power output suitable for entire home and large appliances
✗ Heavy and difficult to move without assistance
DuroStar DS13000MXT 13,000-Wat
✓ Tri-fuel capability offers flexible fuel choices
✗ Heavy and bulky, challenging to move without help
DuroMax XP13000HX 13,000-Watt
✓ Powerful 13,000-watt output suitable for whole-home backup
✗ Heavy at 245 pounds, needing assistance to move
Honeywell 14kW Home Standby Ge
✓ Provides clean, reliable power with low harmonic distortion
✗ No detailed information on runtime or fuel capacity
Kohler 26RCAL-200SELS Air-Cool
✓ Outstanding 26,000-watt capacity suitable for entire large homes
✗ Very heavy (625 pounds), requiring professional installation
Westinghouse 12500 Watt Dual F
✓ High wattage output suitable for whole-home backup
✗ Heavy and bulky, requiring assistance for movement
Westinghouse 28000 Peak Watt T
✓ Massive power output suitable for whole home or heavy-duty applications
✗ Very heavy and large, challenging to transport
DuroMax XP13000EH 13,000-Watt
✓ Powerful enough to run entire homes during outages
✗ Heavy and difficult to move without assistance
Westinghouse 12000 Peak Watt D
✓ Powerful dual fuel inverter with 12,000W peak
✗ Heavy and large, may require help for transport

Complete the kit

Porch Shield Generator Cover for 5500-15000W, 38 x 28 x 3...
Porch Shield Generator Cover for 5500-15000W, 38 x 28 x 3…
Add to your setup →
Porch Shield Generator Cover for 5000-10000W, 32 x 24 x 2...
Porch Shield Generator Cover for 5000-10000W, 32 x 24 x 2…
Add to your setup →
Portable Generator Rain Cover Waterproof for 5000-10000W...
Portable Generator Rain Cover Waterproof for 5000-10000W…
Add to your setup →

Key Takeaways

  • Automatic transfer switch and WiFi monitoring significantly enhance home backup reliability.
  • Dual-fuel options offer flexibility but can add complexity and cost to installation.
  • Portable generators are suitable for temporary power but may lack the convenience of automatic standby units.
  • Size and installation requirements vary widely; budget for professional setup if choosing standby models.
  • Choosing the right wattage depends on your home’s total power needs, not just essential appliances.
2
Westinghouse 14500 Peak Watt D
Best for Heavy-Duty Power and Extended Use
1
Westinghouse 13500 Peak Watt T
Best for Versatile Fuel Options and Extended Runtime
3
Generac Guardian 14kW Home Gen
Best for Seamless Whole-House Power and Smart Monitoring

Our Top Backup Generators Whole House Picks

Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator with Remote Electric StartWestinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator with Remote Electric StartBest for Versatile Fuel Options and Extended RuntimePeak Watts (Gasoline): 13500Running Watts (Gasoline): 10500Peak Watts (Propane): 12500VIEW ON AMAZONSee Our Full Breakdown
Westinghouse 14500 Peak Watt Dual Fuel Portable Generator with Remote Electric StartWestinghouse 14500 Peak Watt Dual Fuel Portable Generator with Remote Electric StartBest for Heavy-Duty Power and Extended UsePeak Watts (Gasoline): 14500Running Watts (Gasoline): 11500Peak Watts (Propane): 13500VIEW ON AMAZONSee Our Full Breakdown
Generac Guardian 14kW Home Generator with Transfer Switch & WiFi MonitoringGenerac Guardian 14kW Home Generator with Transfer Switch & WiFi MonitoringBest for Seamless Whole-House Power and Smart MonitoringPower: 14000 wattsTransfer Switch: 200 AmpMonitoring: Wi-Fi connectivityVIEW ON AMAZONSee Our Full Breakdown
Generac 12,500 Starting Watt Tri-Fuel Portable Generator, Electric StartGenerac 12,500 Starting Watt Tri-Fuel Portable Generator, Electric StartBest for Versatility and Safety FeaturesStarting Watts: 12500Running Watts: 9500Engine: 500cc Generac OHVVIEW ON AMAZONSee Our Full Breakdown
Generac Guardian 26kW Home Generator, Transfer Switch & WiFi MonitoringGenerac Guardian 26kW Home Generator, Transfer Switch & WiFi MonitoringBest for Large-Scale Whole-House Power and Long-Term ReliabilityPower: 26000 wattsTransfer Switch: 200 AmpWarranty: 5-Year Limited WarrantyVIEW ON AMAZONSee Our Full Breakdown
Westinghouse 18000 Peak Watt Home Backup Portable Generator with Remote Electric Start and Transfer Switch Ready 30A & 50A OutletsWestinghouse 18000 Peak Watt Home Backup Portable Generator with Remote Electric Start and Transfer Switch Ready 30A & 50A OutletsBest Overall for Large Home Backup and Heavy-Duty PowerPeak Wattage: 18,000 wattsRunning Wattage: 14,500 wattsEngine: 713cc V-Twin OHVVIEW ON AMAZONSee Our Full Breakdown
DuroStar DS13000MXT 13,000-Watt Tri Fuel Portable Generator with Remote Electric StartDuroStar DS13000MXT 13,000-Watt Tri Fuel Portable Generator with Remote Electric StartBest for Flexible Fuel Options and Whole-Home Backup on a BudgetPower Output: 13,000 wattsFuel Types: Gasoline, Propane, Natural GasStart Type: Remote Electric StartVIEW ON AMAZONSee Our Full Breakdown
DuroMax XP13000HX 13,000-Watt Dual Fuel Portable Generator – Gas & Propane, Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency UseDuroMax XP13000HX 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency UseBest for Dual Fuel Flexibility with High Power CapacityWattage: 13000 wattsFuel Type: Gasoline / PropanePower Source: GasVIEW ON AMAZONSee Our Full Breakdown
Honeywell 14kW Home Standby GeneratorHoneywell 14kW Home Standby GeneratorBest for Quiet, Clean Power with Smart MonitoringPower Output: 14kWEngine: Generac G-ForceTechnology: PrecisionPowerVIEW ON AMAZONSee Our Full Breakdown
Kohler 26RCAL-200SELS Air-Cooled Standby Generator with 200 Amp Transfer Switch, 26,000-WattKohler 26RCAL-200SELS Air-Cooled Standby Generator with 200 Amp Transfer Switch, 26,000-WattBest for High Capacity, Commercial-Grade Whole-House BackupWattage: 26,000 WattsFuel Type: Natural Gas / Liquid PropaneEngine Power: 999 ccVIEW ON AMAZONSee Our Full Breakdown
Westinghouse 12500 Watt Dual Fuel Portable Generator with Remote Electric StartWestinghouse 12500 Watt Dual Fuel Portable Generator with Remote Electric StartBest for Versatile Power and ConveniencePeak Watts: 12500Running Watts: 9500 (Gasoline), 8500 (Propane)Fuel Type: Gasoline, PropaneVIEW ON AMAZONSee Our Full Breakdown
Westinghouse 28000 Peak Watt Tri-Fuel Portable Generator with Remote Electric StartWestinghouse 28000 Peak Watt Tri-Fuel Portable Generator with Remote Electric StartBest for Heavy-Duty, Long-Run PowerPeak Watts: 28000Running Watts: 20000Fuel Types: Gasoline, Propane, Natural GasVIEW ON AMAZONSee Our Full Breakdown
DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator – Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency UseDuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency UseBest for Heavy-Duty Reliability and Whole-Home PowerPower Output: 13,000 wattsFuel Type: Gas & PropaneStart Type: ElectricVIEW ON AMAZONSee Our Full Breakdown
Westinghouse 12000 Peak Watt Dual Fuel Portable Inverter Generator with Remote Electric Start and Transfer Switch ReadyWestinghouse 12000 Peak Watt Dual Fuel Portable Inverter Generator with Remote Electric Start and Transfer Switch ReadyBest for Quiet, Efficient Home Backup & Outdoor UsePeak Power: 12,000WRunning Power: 9,000WFuel Type: Gasoline and PropaneVIEW ON AMAZONSee Our Full Breakdown
Specs at a glance
backup generators whole houseEngineOutlets
Westinghouse 13500 Peak Watt T500cc Westinghouse 4-Stroke OHVTwo GFCI 120V 5–20R, One L14-30R 30A, One 14–50R 50A
Westinghouse 14500 Peak Watt D550cc 4-Stroke OHV Westinghouse Engine—
Generac Guardian 14kW Home GenG-Force Engine—
Generac 12,500 Starting Watt T500cc Generac OHVTwo 120V 20A GFCI, 120/240V 30A twist-lock, 50A outlet
Generac Guardian 26kW Home GenG-Force Engine—
Westinghouse 18000 Peak Watt H713cc V-Twin OHV120/240V 14-50R 50A, 120/240V L14-30R 30A, 120V L5-30R 30A, two GFCI 120V 5–20R 20A, two USB ports
DuroStar DS13000MXT 13,000-Wat—Multiple including 50 amp transfer switch-ready outlet
DuroMax XP13000HX 13,000-Watt ——
Honeywell 14kW Home Standby GeGenerac G-Force—
Kohler 26RCAL-200SELS Air-Cool——
Westinghouse 12500 Watt Dual F457cc 4-Stroke OHVGFCI 120V 5–20R, Transfer Switch Ready 120V L14-30R, RV Ready 120/240V 14–50R
Westinghouse 28000 Peak Watt T999 cc Westinghouse V-Twin OHVMultiple including two 120/240V 14-50R 50A, two 120/240V L14-30R 30A, etc.
DuroMax XP13000EH 13,000-Watt DuroMax robust engineMultiple including transfer switch-ready 50 amp
Westinghouse 12000 Peak Watt D457cc 4-Stroke OHV120/240V 14–50R, L14-30R, Duplex

More Details on Our Top Picks

  1. Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator with Remote Electric Start

    Westinghouse 13500 Peak Watt Tri-Fuel Home Backup Portable Generator with Remote Electric Start

    Best for Versatile Fuel Options and Extended Runtime

    View on Amazon

    This portable generator is an excellent choice for homeowners who value fuel flexibility, offering tri-fuel capability that allows switching between gasoline, propane, and natural gas. Compared to larger standby units like the Generac Guardian 26kW, it remains portable and easier to set up, but its bulk and weight make it less suitable for frequent movement. Its remote start feature adds convenience during outages, while the 19-hour runtime on a full tank ensures long-lasting power. However, its size and weight can be a barrier for those needing a lightweight backup option, and residual odors from factory testing might require airing out. This model suits those who want flexibility in fuel choice and extended run time without sacrificing portability, but it might be too heavy for casual users or those with limited storage space.

    Pros:
    • Tri-fuel capability offers versatile fuel options
    • Remote electric start for added convenience
    • Long runtime of up to 19 hours on a full tank
    • Multiple outlet types suitable for various devices
    Cons:
    • Relatively heavy and bulky, limiting portability
    • May emit residual odor from factory testing

    Best for: Homeowners needing flexible fuel options and long runtime for emergency preparedness

    Not ideal for: Users seeking a lightweight, easily portable generator for frequent transport or outdoor activities

    • Peak Watts (Gasoline):13500
    • Running Watts (Gasoline):10500
    • Peak Watts (Propane):12500
    • Running Watts (Propane):9500
    • Peak Watts (Natural Gas):10000
    • Run Time:up to 19 hours
    • Fuel Tank Capacity:9.5 gallons
    • Engine:500cc Westinghouse 4-Stroke OHV
    • Outlets:Two GFCI 120V 5–20R, One L14-30R 30A, One 14–50R 50A
    Our verdict
    “This generator is ideal for homeowners who prioritize fuel flexibility and extended operation but can handle its size and weight.”
  2. Westinghouse 14500 Peak Watt Dual Fuel Portable Generator with Remote Electric Start

    Westinghouse 14500 Peak Watt Dual Fuel Portable Generator with Remote Electric Start

    Best for Heavy-Duty Power and Extended Use

    View on Amazon

    This dual fuel generator offers significant power, making it well-suited for large homes or demanding job sites. Its 14,500 peak watts on gasoline surpass the Westinghouse 13500 model, providing more headroom for running multiple appliances simultaneously. The 19-hour runtime on gasoline and low THD make it a reliable choice for sensitive electronics. However, this increased power comes with greater weight and bulk, which can complicate transportation and storage. Its large fuel tank requires attention during extended outages. This pick is best for those needing robust, reliable power with flexibility in fuel sources, but less so for users prioritizing portability or simplicity.

    Pros:
    • Powerful dual fuel capability for versatile use
    • Long runtime suitable for extended outages
    • Low THD safe for sensitive electronics
    • Durable engine designed for longevity
    Cons:
    • Heavy and difficult to transport
    • Large fuel tank may need frequent refilling

    Best for: Homeowners with high power demands or professionals requiring a dependable portable generator for extended jobs

    Not ideal for: People seeking a lightweight, easy-to-move generator for occasional use or outdoor recreation

    • Peak Watts (Gasoline):14500
    • Running Watts (Gasoline):11500
    • Peak Watts (Propane):13500
    • Running Watts (Propane):10500
    • Runtime on Gasoline:up to 19 hours
    • Fuel Tank Capacity:9.5 gallons
    • Engine:550cc 4-Stroke OHV Westinghouse Engine
    • Features:Remote Electric Start, Transfer Switch Ready
    Our verdict
    “This generator is perfect for users who need high power output and extended runtime, accepting its weight and size as tradeoffs.”
  3. Generac Guardian 14kW Home Generator with Transfer Switch & WiFi Monitoring

    Generac Guardian 14kW Home Generator with Transfer Switch & WiFi Monitoring

    Best for Seamless Whole-House Power and Smart Monitoring

    View on Amazon

    This Generac model excels in providing reliable, whole-house backup with the convenience of Wi-Fi monitoring, making it ideal for homeowners who want peace of mind without manual checks. Its 14kW capacity covers most household essentials, and the integrated transfer switch allows seamless transfer during outages. The weather-resistant aluminum enclosure ensures durability outside, and True Power Technology minimizes harmonic distortion, protecting sensitive electronics. Compared with portable units like the Westinghouse 14500, it’s less flexible in fuel choice but offers a more integrated, automatic backup solution. The main tradeoff is the higher upfront cost and the need for professional installation. It’s best suited for those seeking a maintenance-free, long-term backup system that can be monitored remotely.

    Pros:
    • Wi-Fi connectivity for remote monitoring
    • Whole house protection with seamless transfer switch
    • Weather-resistant aluminum enclosure
    • Reliable power with low harmonic distortion
    Cons:
    • Requires professional installation
    • Potentially high initial investment
    • Limited details on fuel efficiency

    Best for: Homeowners wanting a reliable, automatic whole-house generator with smart remote monitoring

    Not ideal for: Those needing a portable or budget-friendly backup option with minimal installation

    • Power:14000 watts
    • Transfer Switch:200 Amp
    • Monitoring:Wi-Fi connectivity
    • Warranty:5-Year Limited Warranty
    • Engine:G-Force Engine
    • Enclosure:Aluminum outdoor enclosure
    Our verdict
    “This generator is ideal for homeowners seeking automatic, remote-monitored whole-house backup without portability concerns.”
  4. Generac 12,500 Starting Watt Tri-Fuel Portable Generator, Electric Start

    Generac 12,500 Starting Watt Tri-Fuel Portable Generator, Electric Start

    Best for Versatility and Safety Features

    View on Amazon

    This Generac portable generator offers tri-fuel flexibility, making it suitable for various backup scenarios and outdoor use. Its 12,500 starting watts on gasoline provide sufficient power for essential appliances, while the automatic voltage regulation ensures stable delivery, particularly compared to simpler models. Its COsense technology enhances safety during operation, and extended runtimes on large fuel tanks mean fewer refills during outages. Nonetheless, at 219 pounds, it’s on the heavy side, requiring assistance for moving or setup. Its setup complexity might challenge beginners, and the absence of price details makes it harder to evaluate value. It’s a sound choice for those who prioritize fuel versatility and safety features, despite the weight and setup effort involved.

    Pros:
    • Tri-fuel capability for flexible fuel sourcing
    • Automatic voltage regulation for stable power
    • COsense safety technology
    • Extended runtime on large fuel tanks
    Cons:
    • Heavy weight, at 219 lbs
    • Potentially complex setup for novices

    Best for: Homeowners or outdoor enthusiasts needing a versatile, safe backup generator for various fuels

    Not ideal for: Individuals seeking a lightweight, plug-and-play solution for infrequent use

    • Starting Watts:12500
    • Running Watts:9500
    • Engine:500cc Generac OHV
    • Fuel Tank Capacity:7.5 gallons
    • Runtime at 50% load:9.5 hours
    • Outlets:Two 120V 20A GFCI, 120/240V 30A twist-lock, 50A outlet
    Our verdict
    “This generator suits those needing fuel versatility and enhanced safety, accepting its considerable weight and setup complexity.”
  5. Generac Guardian 26kW Home Generator, Transfer Switch & WiFi Monitoring

    Generac Guardian 26kW Home Generator, Transfer Switch & WiFi Monitoring

    Best for Large-Scale Whole-House Power and Long-Term Reliability

    View on Amazon

    This 26kW unit is designed to provide power for entire homes, with a durable aluminum enclosure and a 200 Amp transfer switch for seamless switching during outages. Its Wi-Fi monitoring offers remote oversight, adding convenience for maintenance and performance tracking. It is more expensive and requires professional installation, but it delivers substantial capacity for larger households or homes with high power demands. Compared to smaller units like the 14kW Guardian, it offers more headroom for simultaneous appliances. The main tradeoff involves the higher upfront cost and installation complexity, which makes it less suitable for those with smaller budgets or DIY preferences. It’s best for those seeking a long-term, high-capacity backup solution that integrates with their home system seamlessly.

    Pros:
    • Remote Wi-Fi monitoring for convenience
    • Whole house power protection with seamless transfer switch
    • Durable aluminum enclosure for outdoor use
    • Engineered for reliability and efficiency
    Cons:
    • Requires professional installation
    • High upfront cost

    Best for: Large households or properties with high power requirements needing a reliable and automatic backup solution

    Not ideal for: Homeowners with limited budgets or those preferring portable, smaller-scale systems

    • Power:26000 watts
    • Transfer Switch:200 Amp
    • Warranty:5-Year Limited Warranty
    • Enclosure Material:Aluminum
    • Monitoring:Wi-Fi Connectivity
    • Engine:G-Force Engine
    Our verdict
    “This generator suits large homes needing dependable, automatic backup power with remote monitoring, accepting the higher installation cost.”
  6. Westinghouse 18000 Peak Watt Home Backup Portable Generator with Remote Electric Start and Transfer Switch Ready 30A & 50A Outlets

    Westinghouse 18000 Peak Watt Home Backup Portable Generator with Remote Electric Start and Transfer Switch Ready 30A & 50A Outlets

    Best Overall for Large Home Backup and Heavy-Duty Power

    View on Amazon

    This option stands out for its exceptional power output, providing up to 18,000 peak watts, making it ideal for large homes with multiple high-demand appliances. Compared to the smaller Westinghouse 13500 Peak Watt model, it offers significantly more capacity, suitable for whole-house backup during extended outages. Its remote electric start and multiple transfer switch-ready outlets simplify setup and operation, while safety features like a CO sensor and low oil shutdown add peace of mind. However, the heavy weight and complex setup mean it’s less suited for those without assistance or technical experience. This generator is best for large households needing reliable, high-capacity power but may be less suitable for those seeking portability or easy DIY installation.

    Pros:
    • High power output suitable for entire home and large appliances
    • Remote electric start for quick operation
    • Multiple transfer switch-ready outlets for versatile connections
    • Built-in safety features including CO sensor and low oil shutdown
    Cons:
    • Heavy and difficult to move without assistance
    • No specific weight information provided, complicating transport planning
    • Setup may require technical knowledge or professional help

    Best for: Families with large homes and multiple high-power appliances seeking dependable backup power

    Not ideal for: Individuals needing a lightweight, portable generator for occasional use or those with limited technical skills

    • Peak Wattage:18,000 watts
    • Running Wattage:14,500 watts
    • Engine:713cc V-Twin OHV
    • Fuel Tank Capacity:10.5 gallons
    • Run Time:Up to 16 hours at 25% load
    • Outlets:120/240V 14-50R 50A, 120/240V L14-30R 30A, 120V L5-30R 30A, two GFCI 120V 5–20R 20A, two USB ports
    Our verdict
    “This generator makes sense for large households that prioritize high capacity and reliability over portability or ease of installation.”
  7. DuroStar DS13000MXT 13,000-Watt Tri Fuel Portable Generator with Remote Electric Start

    DuroStar DS13000MXT 13,000-Watt Tri Fuel Portable Generator with Remote Electric Start

    Best for Flexible Fuel Options and Whole-Home Backup on a Budget

    View on Amazon

    The DuroStar DS13000MXT earns its place for offering tri-fuel versatility—gasoline, propane, or natural gas—making it adaptable to different fuel supplies. Compared with the DuroMax XP13000HX, it provides slightly less power but remains capable of supporting most large home essentials. Its remote electric start simplifies operation, while safety features like CO Alert enhance security during use. The tradeoff lies in its weight and size, which can make mobility challenging, and its fuel tank capacity means frequent refueling during extended outages. This model suits homeowners seeking a reliable, versatile backup generator without the premium price tag but isn’t ideal for those needing ultra-portable options.

    Pros:
    • Tri-fuel capability offers flexible fuel choices
    • Powerful 13,000-watt output suitable for whole-home backup
    • Remote electric start for convenience
    • Includes safety features like CO Alert
    Cons:
    • Heavy and bulky, challenging to move without help
    • Limited fuel tank volume may require frequent refueling
    • Requires proper setup to ensure transfer switch compatibility

    Best for: Homeowners wanting flexible fuel options with a focus on affordability and reliability

    Not ideal for: Users requiring a lightweight or highly portable generator for occasional or outdoor use

    • Power Output:13,000 watts
    • Fuel Types:Gasoline, Propane, Natural Gas
    • Start Type:Remote Electric Start
    • Safety Features:CO Alert
    • Outlets:Multiple including 50 amp transfer switch-ready outlet
    • Run Time:Not specified
    Our verdict
    “This generator is ideal for those needing versatile fuel options and solid backup power without high-end features or portability concerns.”
  8. DuroMax XP13000HX 13,000-Watt Dual Fuel Portable Generator – Gas & Propane, Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Use

    DuroMax XP13000HX 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Use

    Best for Dual Fuel Flexibility with High Power Capacity

    View on Amazon

    The DuroMax XP13000HX excels for its dual fuel capability, offering the convenience of running on gasoline or propane, making it highly adaptable for emergency preparedness. Its 13,000-watt output supports whole-home backup and RV use, with an electric start that simplifies operation. Compared to its tri-fuel counterpart, this model provides similar power but with a more straightforward fuel setup, which may appeal to users prioritizing simplicity. The significant weight of 245 pounds and a small 0.5-gallon tank limit its portability and runtime, respectively, requiring careful planning for extended outages. This pick makes the most sense for users who want a powerful, flexible generator that can be easily stored and used in various scenarios but are prepared for its transport challenges.

    Pros:
    • Powerful 13,000-watt output suitable for whole-home backup
    • Dual fuel capability offers fuel flexibility
    • Electric start for easy operation
    • Transfer switch-ready outlets included
    Cons:
    • Heavy at 245 pounds, needing assistance to move
    • Limited 0.5-gallon fuel tank requires frequent refueling
    • Overpowered for small-scale applications

    Best for: Homeowners or RV owners needing versatile, high-capacity backup power with dual fuel options

    Not ideal for: People seeking a lightweight, portable generator for frequent outdoor or recreational use

    • Wattage:13000 watts
    • Fuel Type:Gasoline / Propane
    • Power Source:Gas
    • Voltage:240 volts
    • Output Wattage:13000
    • Runtime:17 hours
    • Item Weight:245 pounds
    Our verdict
    “This generator suits those who want high power and dual fuel flexibility in a mostly stationary setup for backup or RV use.”
  9. Honeywell 14kW Home Standby Generator

    Honeywell 14kW Home Standby Generator

    Best for Quiet, Clean Power with Smart Monitoring

    View on Amazon

    The Honeywell 14kW Standby Generator, powered by a Generac G-Force engine, offers an excellent blend of clean power output and quiet operation. Unlike portable models like the Westinghouse 14500, it provides seamless automatic backup with a built-in transfer switch, ideal for homeowners prioritizing convenience. Its advanced technology ensures low harmonic distortion, making it suitable for sensitive electronics. The all-aluminum enclosure adds durability, while the self-test mode helps maintain reliability without manual checks. The main tradeoff is its higher installation complexity and a lack of detailed runtime or fuel capacity info, which can be a concern for planning long outages. This generator is best for those wanting a quiet, maintenance-friendly standby system with smart controls but not for those seeking portability or detailed runtime data.

    Pros:
    • Provides clean, reliable power with low harmonic distortion
    • Quiet operation with self-test mode
    • Durable, corrosion-resistant aluminum enclosure
    • Smart controls for monitoring and maintenance
    Cons:
    • No detailed information on runtime or fuel capacity
    • Requires professional installation
    • Higher cost compared to portable options

    Best for: Homeowners seeking a reliable, quiet, and automated standby solution with smart features

    Not ideal for: Users wanting a portable generator for outdoor recreation or frequent travel

    • Power Output:14kW
    • Engine:Generac G-Force
    • Technology:PrecisionPower
    • Enclosure:All-Aluminum with RhinoCoat finish
    • Features:Quiet-Test Self-Test Mode, Multilingual LCD display
    • Fuel Type:Not specified
    Our verdict
    “This generator makes sense for homeowners who want a quiet, automated standby system with smart features for seamless backup power.”
  10. Kohler 26RCAL-200SELS Air-Cooled Standby Generator with 200 Amp Transfer Switch, 26,000-Watt

    Kohler 26RCAL-200SELS Air-Cooled Standby Generator with 200 Amp Transfer Switch, 26,000-Watt

    Best for High Capacity, Commercial-Grade Whole-House Backup

    View on Amazon

    The Kohler 26RCAL-200SELS offers a formidable 26,000-watt power output, tailored for large homes or small commercial setups. Its 999cc Command Pro V-Twin engine ensures robust performance, and the included 200 Amp automatic transfer switch provides seamless power restoration. Compared to smaller standby options like the Honeywell, it’s designed for reliability in extreme weather and heavy loads. The heavy weight of over 600 pounds and large size make installation more involved, requiring professional help and ample space. Its high capacity is perfect for big households or properties with extensive electrical needs, but overkill for smaller or average-sized homes. This model is best for those with substantial power demands and the budget for a heavy-duty, commercial-grade system.

    Pros:
    • Outstanding 26,000-watt capacity suitable for entire large homes
    • Dual fuel capability with natural gas and propane
    • Includes a 200 Amp automatic transfer switch for seamless power transfer
    • Heavy-duty, commercial-grade engine designed for durability
    Cons:
    • Very heavy (625 pounds), requiring professional installation
    • Large physical size limits placement options
    • Higher price point reflects its premium, heavy-duty build

    Best for: Large households or small commercial properties needing substantial, reliable backup power

    Not ideal for: Homeowners with limited space or those seeking portable or budget-friendly options

    • Wattage:26,000 Watts
    • Fuel Type:Natural Gas / Liquid Propane
    • Engine Power:999 cc
    • Engine Type:4 Stroke
    • Starting Wattage:26,000 watts
    • Running Wattage:26 KW
    • Item Weight:625 pounds
    Our verdict
    “This generator fits large properties with high power needs and the space and budget for a professional installation of a commercial-grade system.”
  11. Westinghouse 12500 Watt Dual Fuel Portable Generator with Remote Electric Start

    Westinghouse 12500 Watt Dual Fuel Portable Generator with Remote Electric Start

    Best for Versatile Power and Convenience

    View on Amazon
    The Westinghouse WGen9500DF stands out for its dual fuel capability, offering up to 12,500 peak watts which makes it suitable for running multiple appliances during power outages. Compared with larger models like the Westinghouse 28000 Peak Watt Generator, it provides a more manageable size while still delivering substantial power. Its remote start feature adds convenience, especially during emergency situations, but this also contributes to its weight and bulk, making transportation challenging. While it offers long runtime of up to 12 hours and multiple outlets, its noise level can be significant, which might bother neighbors or indoor use. This generator works best for homeowners needing reliable backup power without the complexity of larger units.
    Pros:
    • High wattage output suitable for whole-home backup
    • Remote start for quick, hassle-free operation
    • Long runtime of up to 12 hours on a full tank
    • Multiple outlets including transfer switch and RV-ready options
    Cons:
    • Heavy and bulky, requiring assistance for movement
    • Can be noisy during operation
    • Setup may be complex for first-time users

    Best for: Homeowners who want a powerful yet portable dual fuel generator with remote start for outages or job sites.

    Not ideal for: Small households or apartments where noise and size are critical; those seeking a lightweight, easy-to-move unit.

    • Peak Watts:12500
    • Running Watts:9500 (Gasoline), 8500 (Propane)
    • Fuel Type:Gasoline, Propane
    • Engine:457cc 4-Stroke OHV
    • Tank Capacity:6.6 gallons
    • Run Time:Up to 12 hours
    • Outlets:GFCI 120V 5–20R, Transfer Switch Ready 120V L14-30R, RV Ready 120/240V 14–50R
    • Start Type:Remote Electric and Recoil
    • Warranty:3 years
    Our verdict
    “This generator is ideal for homeowners seeking a powerful, dual fuel option with remote start, but its size and noise level limit portability for some users.”
  12. Westinghouse 28000 Peak Watt Tri-Fuel Portable Generator with Remote Electric Start

    Westinghouse 28000 Peak Watt Tri-Fuel Portable Generator with Remote Electric Start

    Best for Heavy-Duty, Long-Run Power

    View on Amazon
    The Westinghouse 28000 Peak Watt Tri-Fuel Generator offers exceptional power for large homes or demanding job sites, with 28,000 peak watts and 20,000 running watts. It surpasses the DuroMax XP13000EH in raw power, especially useful for whole-house backup during extended outages. Its tri-fuel capability provides flexibility, allowing use of gasoline, propane, or natural gas, which is a major advantage over dual-fuel models. The remote start simplifies operation, but the unit’s size and weight make it difficult to move without assistance. Its long runtime of up to 15 hours on a large 17.2-gallon tank is ideal for prolonged outages; however, the setup and transportation complexity may deter some users. This unit is best suited for those who need serious backup power for large homes or construction sites.
    Pros:
    • Massive power output suitable for whole home or heavy-duty applications
    • Tri-fuel flexibility for fuel choice and availability
    • Long runtime of up to 15 hours at 25% load
    • Remote electric start for ease of use
    Cons:
    • Very heavy and large, challenging to transport
    • No specific weight listed, complicating portability assessment
    • Setup can be complex for first-time users

    Best for: Homeowners or contractors requiring a high-capacity, versatile generator for extended use and severe outages.

    Not ideal for: Individuals with limited storage space or those needing a lightweight, portable generator for occasional use.

    • Peak Watts:28000
    • Running Watts:20000
    • Fuel Types:Gasoline, Propane, Natural Gas
    • Engine:999 cc Westinghouse V-Twin OHV
    • Tank Capacity:17.2 gallons
    • Run Time:Up to 15 hours at 25% load
    • Outlets:Multiple including two 120/240V 14-50R 50A, two 120/240V L14-30R 30A, etc.
    • Start Type:Remote Electric
    • Warranty:3-year limited
    Our verdict
    “This generator is best for those needing maximum power and fuel flexibility despite its size and setup challenges.”
  13. DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator – Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Use

    DuroMax XP13000EH 13,000-Watt Dual Fuel Portable Generator - Gas & Propane, Electric Start, Whole Home Backup Power, Transfer Switch Ready, RV & Emergency Use

    Best for Heavy-Duty Reliability and Whole-Home Power

    View on Amazon
    The DuroMax XP13000EH offers a robust 13,000 watts of power, making it a strong contender for whole-home backup, especially when compared to smaller dual fuel units like the Westinghouse 12500DF. Its all-metal construction and transfer switch-ready 50-amp outlet emphasize durability and ease of connection to a home’s electrical system. While it provides ample power for most homes and emergency needs, its weight makes it less suitable for frequent relocation. The absence of noise level details leaves some uncertainty about its operation comfort, and the price may be higher than less capable models. This generator is well-suited for users who prioritize durability, power, and reliable backup during storms or outages.
    Pros:
    • Powerful enough to run entire homes during outages
    • Dual fuel capability offers fuel flexibility
    • All-metal frame and power panel for durability
    • Transfer switch-ready for easy wiring
    Cons:
    • Heavy and difficult to move without assistance
    • No noise level info, which could impact outdoor use
    • Price may be higher compared to less powerful models

    Best for: Homeowners needing a durable, high-capacity generator capable of whole-home backup with heavy-duty construction.

    Not ideal for: People seeking a lightweight or portable generator for infrequent use or small-scale emergencies.

    • Power Output:13,000 watts
    • Fuel Type:Gas & Propane
    • Start Type:Electric
    • Outlets:Multiple including transfer switch-ready 50 amp
    • Construction:All metal
    • Engine:DuroMax robust engine
    Our verdict
    “This generator fits those who need serious, durable backup power with a focus on reliability over portability.”
  14. Westinghouse 12000 Peak Watt Dual Fuel Portable Inverter Generator with Remote Electric Start and Transfer Switch Ready

    Westinghouse 12000 Peak Watt Dual Fuel Portable Inverter Generator with Remote Electric Start and Transfer Switch Ready

    Best for Quiet, Efficient Home Backup & Outdoor Use

    View on Amazon
    The Westinghouse iGen12000DFc provides up to 12,000W peak power, making it a strong inverter option for home backup, especially when quiet operation matters. Its eco mode and noise level as low as 64 dBA contrast sharply with the louder gas generators like the Westinghouse 12500DF, making it more neighbor-friendly and suitable for outdoor gatherings. With a large fuel tank providing up to 19 hours of runtime at 25% load, it excels in long-duration outages. While its weight and size demand assistance for transport, its advanced features—digital display, parallel capability, CO sensor—add value for tech-savvy users. This model makes the most sense for those prioritizing quiet operation alongside reliable power for both home and outdoor activities.
    Pros:
    • Powerful dual fuel inverter with 12,000W peak
    • Quiet operation at 64 dBA, neighborhood friendly
    • Long runtime of up to 19 hours at 25% load
    • Features like digital display and CO sensor enhance safety and usability
    Cons:
    • Heavy and large, may require help for transport
    • Higher price due to advanced features
    • Setup complexity for first-time users

    Best for: Homeowners or outdoor enthusiasts seeking quiet, efficient backup power with smart monitoring features.

    Not ideal for: Users needing ultra-lightweight portability or minimal setup complexity for infrequent use.

    • Peak Power:12,000W
    • Running Power:9,000W
    • Fuel Type:Gasoline and Propane
    • Engine:457cc 4-Stroke OHV
    • Fuel Tank Capacity:7.9 gallons
    • Runtime at 25% load:Up to 19 hours
    • Noise Level:as low as 64 dBA
    • Outlets:120/240V 14–50R, L14-30R, Duplex
    • Additional Features:Remote start, digital display, parallel, CO sensor
    Our verdict
    “This inverter generator is ideal for those valuing quiet, efficient power with smart features, despite some size and setup considerations.”
backup generators whole house
What makes a great backup generators whole house
1
Power Capacity and Load Management
Determining the right wattage is critical.
2
Automatic Transfer Switches and Ease of Use
An automatic transfer switch (ATS) simplifies operation by switching power sources seamlessly when an outage occurs, often without
3
Fuel Type and Availability
Generators typically run on natural gas, propane, or gasoline.
4
Maintenance and Longevity
Regular maintenance extends the lifespan of your generator and ensures reliable operation during outages.
How to choose your backup generators whole house
1
How we picked
Our evaluation focused on performance, reliability, ease of installation, fuel flexibility, and overall value.
2
Power Capacity and Load Management
Determining the right wattage is critical.
3
Automatic Transfer Switches and Ease of Use
An automatic transfer switch (ATS) simplifies operation by switching power sources seamlessly when an outage occurs, oft
4
Fuel Type and Availability
Generators typically run on natural gas, propane, or gasoline.
5
Maintenance and Longevity
Regular maintenance extends the lifespan of your generator and ensures reliable operation during outages.
Vetted backup generators whole house ·
The best backup generators whole house, compared
★ Winner Westinghouse 18000 Peak Watt H
Best Overall for Large Home Backup and Heavy-Duty Power
14compared
999 cc Westinghouse V-Twin OHVtop engine

How We Picked

Our evaluation focused on performance, reliability, ease of installation, fuel flexibility, and overall value. We considered whether units could handle entire home loads or just critical circuits, prioritizing models with automatic transfer switches and remote monitoring for maximum convenience. Durability and build quality were also key, as these generators need to withstand prolonged operation during emergencies. The ranking balances upfront costs with long-term reliability, helping buyers find options suited to different budgets and needs.
Which backup generators whole house fits you?
The everyday user
All-round, reliable
The enthusiast
Premium & high-performance
The gift-giver
Looks & craftsmanship

Factors to Consider When Choosing Backup Generators Whole House

When selecting a whole-house backup generator, understanding key factors beyond basic specs can prevent costly mistakes and ensure dependable operation during outages. Consider your home’s power demands, installation complexity, and fuel preferences to make an informed choice. In this guide, I cover essential aspects that influence the long-term value and suitability of a backup generator.

Power Capacity and Load Management

Determining the right wattage is critical. Many homes require 20kW or more for whole-house coverage, but smaller units can power essential circuits. Overestimating capacity leads to higher costs, while underestimating can leave you without enough power during outages. Conduct a detailed load calculation to identify essential appliances and ensure the generator can handle peak demands.

Automatic Transfer Switches and Ease of Use

An automatic transfer switch (ATS) simplifies operation by switching power sources seamlessly when an outage occurs, often without manual intervention. This feature is especially valuable for homes that experience frequent outages or require uninterrupted power for sensitive equipment. Manual systems are cheaper upfront but demand more user involvement, which can be inconvenient during emergencies.

Fuel Type and Availability

Generators typically run on natural gas, propane, or gasoline. Natural gas and propane are more convenient for long-term use because they can be connected to existing home fuel lines, reducing refueling needs. Gasoline-powered units are portable but require regular refilling and storage considerations. Dual-fuel models offer flexibility but tend to cost more and are more complex to operate.

Installation Complexity and Cost

Standby generators usually involve professional installation, including electrical hookup and fuel line connection, which can add significantly to total costs. Portable models are easier to set up but lack the automatic features and convenience of standby units. Assess your home’s infrastructure and budget before deciding on a permanent versus portable solution.

Maintenance and Longevity

Regular maintenance extends the lifespan of your generator and ensures reliable operation during outages. Look for models with accessible service points and clear maintenance schedules. Dual-fuel units may require additional upkeep due to more complex fuel systems. Balancing initial costs with ongoing maintenance needs helps avoid surprises down the line.

Frequently Asked Questions

Can a backup generator power my entire house during an outage?

Yes, a suitably sized whole-house generator can power most or all of your home’s electrical needs during an outage. The key is accurately calculating your total load and selecting a generator with enough wattage. Larger units with 20kW or more capacity are typically necessary for full-home coverage, especially if you want to run high-demand appliances like HVAC systems and electric water heaters simultaneously.

Is it better to choose a portable or standby generator for my home?

The decision depends on your needs and budget. Standby generators automatically activate during outages, providing seamless power and convenience, but require professional installation and a higher upfront cost. Portable generators are more affordable and flexible—they can be moved around and used for other purposes—but lack automatic startup and are less reliable for continuous, whole-house backup. Consider how often outages occur and whether you prefer convenience or flexibility.

What fuel type should I choose for my home backup generator?

Natural gas and propane are the most convenient options for home standby generators because they can connect directly to your existing fuel lines, offering continuous and hassle-free operation. Gasoline units are more portable and easier to set up but require manual refueling and storage considerations. Dual-fuel generators offer the best of both worlds, providing flexibility but often at a higher cost and complexity.

How much does installation typically cost for a standby generator?

Installation costs vary widely depending on the generator size, fuel type, and your home’s existing infrastructure. A basic setup might start around a few thousand dollars, but complex installations involving electrical upgrades or new fuel lines can significantly increase expenses. It’s wise to budget for professional installation, especially for larger units, to ensure safety and compliance with local codes.

How often should I maintain my backup generator to ensure reliability?

Regular maintenance is essential for dependable operation. Most manufacturers recommend annual inspections, oil changes, and fuel system checks. Running the generator periodically, typically every 6-12 months, helps keep components lubricated and functioning properly. Proper maintenance reduces the risk of failure during emergencies and extends the lifespan of your investment.

Conclusion

For homeowners seeking the best overall reliability and convenience, the Generac Guardian 26kW stands out as the top choice, especially with automatic operation and smart monitoring. Those on a tighter budget or needing portable backup power might prefer the Westinghouse 18000 Peak Watt for its transfer switch readiness and ease of use. For premium, long-term installations, the Kohler 26RCAL-200SELS offers exceptional durability and power. Beginners or those with limited installation options should prioritize models with automatic transfer switches, while budget-conscious buyers might focus on portable options with dual-fuel flexibility. This tailored approach ensures you select a backup generator that aligns with your specific home needs and expectations.

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