10 Best whole house generators of 2025

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1

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KOHLER
20kW Standby Generator with 200amp TS
Main highlights

Automatic Power Restoration
Restores power in 10 seconds with advanced voltage and frequency regulation.

Versatile Fuel Options
Ideal for residential use, runs on natural gas or liquid propane.

Praised Reliability
Customers appreciate the reliable KOHLER Command PRO engine and its robust performance.
9.9

Exceptional

Our Rating
How do we rank?

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Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

Champion Power Equipment
Champion Power Equipment 201222 22 kW aXis Home Standby Generator with 200A Whole House Switch
Main highlights

Fuel Efficiency
Up to 20% more fuel efficient than competitors, providing 22,000 watts on propane and 19,800 watts on natural gas with continuous power.

Ideal for Home Use
Perfect for managing high-demand appliances with aXis technology and lower installation costs.

Quiet Operation
Operates at a residential-friendly 67 dBA noise level, praised for its quiet performance.
9.7

Exceptional

Our Rating
3

Generac
Generac Guardian 24kW Home Standby Generator with 200 Amp Transfer Switch, Durable All Aluminum, WiFi Enabled with G-Force Engine, Easy to Use, Whole House Power Backup, Smart Outage Solution - Bisque

10% Off
Main highlights

Remote Monitoring and Alerts
Effortlessly monitor generator performance and receive alerts with Mobile Link Wi-Fi.

Whole House Power Assurance
Ideal for homes requiring seamless power during outages with a 200-amp transfer switch.

Quiet and Reliable Operation
Praised for its quiet performance, even during initialization and operation.
9.6

Exceptional

Our Rating

8.9
worth the money

8.0
Easy installation
4

Westinghouse
Westinghouse 28000 Peak Watt Home Backup Portable Generator, Remote Electric Start with Auto Choke, Transfer Switch Ready 30A & 50A Outlets, Gas Powered, CO Sensor,Blue

24% Off
Main highlights

Powerful and Reliable
28,000 peak watts with 20,000 running watts for robust power.

Ideal for Home Backup
Perfect for residential use during power outages or emergencies.

Remote Start Convenience
Praised for easy remote start and setup by users.
9.3

Excellent

Our Rating

9.5
Tech Support

8.4
worth the money

8.4
Maneuverability
5

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

26% Off
Main highlights

Powerful Dual Fuel Capability
Delivers 13,000 watts with gas or propane, ensuring versatility.

Ideal for Home and Outdoor Use
Perfect for powering homes, RVs, and job sites.

Highly Praised Durability
Customers appreciate its robust build and longevity.
9.0

Excellent

Our Rating

8.7
movability

8.7
Maneuverability

8.4
worth the money
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6

Westinghouse
Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered
Main highlights

High Power Output and Versatility
14500 Peak Watts with tri-fuel capability for flexibility.

Ideal for Home Backup Use
Perfect for residential power backup during outages.

Praised for Easy Setup and Use
Customers love the remote start and simple setup.
8.8

Very Good

Our Rating

9.9
Easy to build

9.9
worth the money

9.9
Flexibility
7

Westinghouse
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

20% Off
Main highlights

Powerful Dual-Fuel Engine
Generates 9500 running watts on gasoline and 8500 on propane.

Ideal for Home Backup
Perfect for whole-house power during outages with 50 amp support.

Convenient Remote Start
Highly praised for ease of use and reliability.
8.5

Good

Our Rating

9.9
Easy to build

9.9
worth the money

9.9
Flexibility
8

Champion Power Equipment
Champion Power Equipment 100177 8.5-kW Home Standby Generator with 50-Amp Outdoor-Rated Automatic Transfer Switch
Main highlights

Seamless 24/7 Power
No refueling, no manual operation, no extension cords needed and backed by a 10-year limited warranty

Ideal for Cold Climates
24V starting system designed to operate down to -22 F, making it perfect for harsh winter environments

Highly Recommended for Reliability
Customers praise its automatic start and quick power restoration during outages, along with straightforward installation and excellent customer service
8.4

Good

Our Rating

9.3
Noise level

8.7
Easy installation

8.0
Tech Support
9

EF ECOFLOW
EF ECOFLOW Portable Power Station 3600Wh DELTA Pro, 120V AC Outlets x 5, 3600W, 2.7H Fast Charge, Lifepo4 Power Station, Solar Generator for Home Use, Power Outage, Camping, RV, Emergencies

35% Off
Main highlights

High Capacity Battery
Features a 3600Wh LFP battery, expandable up to 25kWh.

Ideal for Emergencies and Outdoors
Perfect for home backup, camping, and RV use.

Fast Charging and Flexibility
Praised for rapid charging and versatile output options.
8.3

Good

Our Rating

9.9
Charging power

9.3
Noise level

8.9
Battery Duration
10

DuroMax
DuroMax XP13000HXT 13,000-Watt 500cc Tri Fuel Gas Propane Natural Gas Portable Generator with CO Alert, Black/Blue

32% Off
Main highlights

Tri Fuel Flexibility
Run on gasoline, propane, or natural gas for ultimate flexibility.

Ideal for Power Outages
Perfect for home backup during storms or power outages.

Easy Start Feature
Praised for electric and remote start convenience and reliability.
8.2

Good

Our Rating

8.4
Simple to use

8.4
Maneuverability

8.2
worth the money

10 Best whole house generators of 2025

1

20kW Standby Generator with 200amp TS

How do we rank?

How do we rank?

Analyzing top stores

2

Champion Power Equipment 201222 22 kW aXis Home Standby Generator with 200A Whole House Switch

3

Generac Guardian 24kW Home Standby Generator with 200 Amp Transfer Switch, Durable All Aluminum, WiFi Enabled with G-Force Engine, Easy to Use, Whole House Power Backup, Smart Outage Solution - Bisque

8.9

8.0

4

Westinghouse 28000 Peak Watt Home Backup Portable Generator, Remote Electric Start with Auto Choke, Transfer Switch Ready 30A & 50A Outlets, Gas Powered, CO Sensor,Blue

9.5

8.4

8.4

5

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

8.7

8.7

8.4

6

Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered

9.9

9.9

9.9

7

Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

9.9

9.9

9.9

8

Champion Power Equipment 100177 8.5-kW Home Standby Generator with 50-Amp Outdoor-Rated Automatic Transfer Switch

9.3

8.7

8.0

9

EF ECOFLOW Portable Power Station 3600Wh DELTA Pro, 120V AC Outlets x 5, 3600W, 2.7H Fast Charge, Lifepo4 Power Station, Solar Generator for Home Use, Power Outage, Camping, RV, Emergencies

9.9

9.3

8.9

10

DuroMax XP13000HXT 13,000-Watt 500cc Tri Fuel Gas Propane Natural Gas Portable Generator with CO Alert, Black/Blue

8.4

8.4

8.2

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