12 Best Whole House Generators For Home Backup of 2026 To Power Through Extended Outages

1

DuroStar DS13000MX 13,000-Watt 500cc Dual Fuel Portable Generator - Gas

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  9.7
• Brand
  DuroStar

Key specs2

Fuel Flexibility

Dual fuel: gasoline or liquid propane

Engine Displacement

500cc engine

Pros & cons42

Pros

• Delivers 13,000 watts from a 500cc engine to handle high-demand home circuits
• Dual-fuel design operates on standard gasoline or stored liquid propane
• Remote electric start provides convenient ignition during severe weather
• Transfer switch ready configuration simplifies connection to home panels

Cons

• Lacks natural gas hookup capability unlike tri-fuel generator models
• Does not document an integrated carbon monoxide safety shutoff sensor

2

Honeywell 14kW Home Standby Generator - Automatic Backup Power for

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  9.4
• Brand
  Honeywell

Key specs2

Standby Enclosure

Features a dedicated weather-resistant enclosure designed for permanent outdoor placement on the included installation pad.

Utility Fuel Delivery

Runs continuously on municipal natural gas or residential liquid propane lines without refueling trips.

Pros & cons42

Pros

• Permanent 14kW standby output provides automatic backup power for the home
• Operates continuously on residential natural gas or liquid propane supplies
• Weather-resistant enclosure protects mechanical components outdoors
• Includes an exterior installation pad to assist with stationary mounting

Cons

• Output rated at 14kW requires careful load management with multiple AC units
• Listing does not state whether an automatic transfer switch is bundled

3

Generac 22kW Whole Home Generator, Cellular Capability

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  9.3
• Brand
  Generac

Key specs2

Standby Output Capacity

22kW whole home rating

Wireless Monitoring

Cellular capability included

Pros & cons32

Pros

• Delivers 22kW capacity to power high-tonnage central air conditioning
• Cellular capability enables remote tracking of generator operating status
• Permanent standby design eliminates the need for manual fueling in storms

Cons

• Does not include a transfer switch in this specific system package
• Stationary standby footprint requires dedicated site prep and gas hookups

4

Generac 22kW Whole Home Generator, Transfer Switch & Cellular Capability

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  9.3
• Brand
  Generac

Key specs2

Bundled Hardware

Includes a matching transfer switch and cellular capability directly in the system bundle.

Standby Output Capacity

22kW whole home rating

Pros & cons32

Pros

• Includes an automatic transfer switch directly in the bundled package
• Generates 22kW of whole-home power to keep heavy HVAC compressors running
• Cellular capability delivers remote status updates directly to your device

Cons

• Permanent standby configuration cannot be relocated for emergency portable use
• Requires professional installation alongside established gas utility lines

5

DuroMax XP13000EH Dual Fuel Portable Generator 13000 Watt Gas or

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  9.2
• Brand
  DuroMax

Key specs2

Starting Method

Electric push-button start

Dual Fuel Operation

Runs on gasoline or propane to avoid relying solely on gas stations during extended regional blackouts.

Pros & cons32

Pros

• Provides 13,000 watts of power to handle heavy motor starts on home circuits
• Dual-fuel system runs on common gasoline or clean-storing liquid propane
• Electric start mechanism allows fast ignition without pulling a recoil cord

Cons

• Lacks the CO Alert carbon monoxide shutoff sensor featured on newer revisions
• Does not support continuous utility hookups via municipal natural gas

6

Generac 14kW Whole Home Generator, Cellular Capability

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  9.1
• Brand
  Generac

Key specs2

Standby Rating

14kW whole home output

Remote Connectivity

Integrated cellular capability

Pros & cons32

Pros

• Provides 14kW of permanent standby backup for whole-house electrical loads
• Integrated cellular capability allows convenient remote system monitoring
• Fixed exterior installation keeps engine noise and exhaust outside the home

Cons

• Does not include an automatic transfer switch in this base package
• Capacity of 14kW may limit simultaneous operation of large electric appliances

7

DuroMax XP13000HX Dual Fuel Portable Generator-13000 Watt Gas or Propane

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  8.8
• Brand
  DuroMax

Key specs2

Emissions & Safety

• Integrated CO Alert carbon monoxide sensor
• 50-state emissions compliance

Dual Fuel Operation

Supports dual fuel operation on gasoline or liquid propane to prevent fuel storage headaches during power losses.

Pros & cons42

Pros

• CO Alert technology automatically monitors carbon monoxide for added safety
• Dual-fuel capability gives you the choice between pump gas and liquid propane
• 13,000-watt output provides substantial headroom for household starting surges
• 50-state emissions approval satisfies strict regional compliance rules

Cons

• Cannot tap directly into municipal natural gas lines for continuous fuel
• Portable setup requires manual wheeling and cord setup during an outage

8

Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote

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  8.3
• Brand
  Westinghouse

Key specs2

Tri-Fuel Flexibility

Gasoline, liquid propane, and natural gas

Peak Starting Reserve

14,500 peak watts

Pros & cons42

Pros

• Tri-fuel system runs on gasoline, propane, or continuous natural gas supplies
• 14,500 peak watts deliver strong starting headroom for central air equipment
• Transfer switch ready design connects directly to residential inlet boxes
• Remote electric start lets you power on the generator from a distance

Cons

• Running on natural gas delivers less wattage than gasoline, requiring verification
• Listing does not specify an automatic carbon monoxide shutoff sensor

9

Generac 10kW Whole Home Generator, Transfer Switch & Cellular Capability

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  8.3
• Brand
  Generac

Key specs2

Transfer Hardware

Comes paired with an automatic transfer switch to automate failover whenever utility power drops.

Output Sizing

10kW standby capacity

Pros & cons32

Pros

• Includes an automatic transfer switch in the package for complete installation
• Built-in cellular capability allows remote oversight of backup status
• Permanent 10kW standby output supports essential household circuits safely

Cons

• 10kW capacity cannot power central air conditioning alongside electric ranges
• Stationary exterior placement cannot be transported for off-grid recreation

10

Westinghouse 28000 Peak Watt Home Backup Portable Generator, Remote Electric

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  8.0
• Brand
  Westinghouse

Key specs3

Outlet Configuration

Dedicated 30A and 50A transfer switch outlets

Surge Wattage Headroom

28,000 peak watts

Cold Weather Ignition

Remote electric start system features an automatic choke to start reliably without manual carb adjustment.

Pros & cons42

Pros

• Generates 28,000 peak watts to cover immense motor surges across whole homes
• Equipped with transfer switch ready 30A and 50A outlets for heavy power cords
• Integrated CO sensor cuts engine operation if carbon monoxide builds up
• Remote electric start features auto choke for reliable push-button ignition

Cons

• Gasoline-only fuel design requires storing and rotating liquid gas cans
• High-output portable chassis requires substantial muscle to wheel into place

11

DuroStar DS13000MXT 13,000-Watt 500cc Tri Fuel Portable Generator - Gas,

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  7.9
• Brand
  DuroStar

Key specs2

Engine Displacement

500cc engine

Utility Gas Integration

Connects directly to natural gas supply lines to eliminate the need for gasoline refueling during prolonged outages.

Pros & cons42

Pros

• Tri-fuel capability allows running on gasoline, propane, or home natural gas
• 13,000-watt output from a 500cc engine handles demanding residential circuits
• Remote electric start provides simple ignition during severe storm conditions
• Transfer switch ready layout integrates smoothly with manual home panels

Cons

• Natural gas line output drops below gasoline wattage, which requires monitoring
• Does not list an integrated carbon monoxide safety shutoff sensor

12

Westinghouse 18000 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote

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  7.5
• Brand
  Westinghouse

Key specs3

Tri-Fuel Flexibility

Gasoline, liquid propane, and natural gas

Safety Sensor

Built-in CO carbon monoxide shutoff sensor

Surge Capacity

18,000 peak watts

Pros & cons52

Pros

• Tri-fuel setup connects to gasoline, propane, or endless natural gas lines
• 18,000 peak watts deliver massive surge capability for central air compressors
• Built-in CO sensor automatically shuts down the generator if exhaust accumulates
• Transfer switch ready configuration pairs directly with exterior inlet boxes
• Remote electric start offers convenient starting without outdoor pull cords

Cons

• Natural gas output produces lower running wattage than gasoline operation
• Large portable frame requires substantial outdoor storage space and clearance

Last update on 2026-10-17 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Can a high-wattage portable generator run a whole house like a standby generator?

It depends on your total electrical demand and your home connection hardware. High-output portable models, such as the Westinghouse 28000 Peak Watt unit or the DuroStar DS13000MX 13,000-Watt generator, provide transfer switch ready connections, including 30A and 50A outlets, to energize multiple house circuits through an electrical subpanel. But unlike automatic home standby systems like the Generac 22kW or Honeywell 14kW models, portable generators require manual wheeling, outdoor positioning, manual cord connections, and manual starting whenever the utility grid fails.

How many starting watts do you need to power a central air conditioner?

You must confirm the exact starting requirements directly on your cooling unit's data plate, because starting draw varies significantly based on compressor size. Look for the locked rotor amps rating on your exterior condenser to calculate the required surge output. High-capacity generators like the Westinghouse 18000 Peak Watt Tri-Fuel model or the DuroMax XP13000EH 13000 Watt dual-fuel unit offer substantial peak wattage to absorb motor startup spikes, but you should always verify that your air conditioner does not exceed your generator's peak rating.

Does a whole house generator package come with a transfer switch?

Not every whole home generator package includes a transfer switch in the box. Certain bundles, like the Generac 22kW Whole Home Generator and Generac 10kW Whole Home Generator, come packaged with a transfer switch. In contrast, models like the Generac 14kW Whole Home Generator and Honeywell 14kW Home Standby Generator list features like cellular capability or an included installation pad, requiring you to source compatible switchgear separately. Portable models like the Westinghouse 14500 Peak Watt Tri-Fuel generator are labeled transfer switch ready, meaning they connect to a manual switch box rather than supplying one.

What fuel options help prevent fuel spoilage during long outages?

Running your generator on natural gas or propane eliminates the risk of fuel going stale in storage. Tri-fuel units, such as the DuroStar DS13000MXT 13,000-Watt and the Westinghouse 18000 Peak Watt generator, operate on gas, propane, and natural gas. Propane cylinders can sit for years without degrading, and utility natural gas lines provide a steady fuel supply directly to your home. This avoids the clogged carburetors and fuel stabilization headaches common with stored liquid gasoline during extended storm recovery.

How do carbon monoxide safety sensors function on portable generators?

Integrated carbon monoxide sensors monitor ambient exhaust levels and automatically shut off the engine if toxic fumes accumulate to unsafe levels. Units such as the DuroMax XP13000HX Dual Fuel generator with CO Alert and the Westinghouse 28000 Peak Watt generator feature this built-in protection. While an automatic shutoff sensor adds an essential layer of safety, you must still operate portable generators outdoors in well-ventilated areas, while permanent standby units rely on a weather-resistant enclosure installed on an exterior pad.

How should you manage smaller electronics while waiting to switch on house power?

You can run compact personal devices from dedicated portable batteries rather than firing up a heavy generator for light electrical loads. Keeping the best laptop power banks on hand lets you maintain productivity and power computers through brief dropouts. For keeping essential phones and small flashlights charged in an emergency, having the best power banks 20000mah ready ensures dependable power before you connect and fire up whole-home equipment.