When you shop through links on our site, we may earn an affiliate commission. This educational content is not intended to be a substitute for professional advice.

20 Best Standby Diesel Generator For Home Use (2023 Updated)

A standby diesel generator is a type of backup generator that uses diesel fuel. Unlike other generators that use gasoline or propane, a standby diesel generator can run for long periods of time without needing to be refueled.

This makes them ideal for use in situations where power outages are expected to last for days or weeks, such as during a natural disaster.

20 Best Standby Diesel Generator For Home Use

Product Image Product Name Features Price

Generac 7209 Guardian 24kW Home Standby Generator

  • True Power technology delivers superior power quality with less than 5% total harmonic distortion.
  • Generac G-Force engine requires less maintenance.

Generac Guardian 10kw Home Backup Standby Generator 7172

  • True Power Technology
  • G-Force Engine
  • Quiet-Test Self-Test Mode

Kohler 20RCAL-200SELS 20kW Standby Generator, Tan

  • Compatible to run on natural gas (18kW) or liquid propane (20kW) with simple switching between natural gas and liquid propane in the field

Generac Guardian 24kW Home Standby Generator – 7210

  • Takes up 70% less space when compared to other output products
  • Using PWRview you could save enough to pay for your generator

Generac 7228 18KW Standby Generator

  • 18000 W

Generac 70422 Guardian Series Air-Cooled Standby Generator, Aluminum

  • 2200/19500 Watts

Generac Air-Cooled Standby Generator 6998

  • Powers 8-circuits of your home with the 50-amp, NEMA 1 (indoor rated only) lightweight transfer switch
  • Generac generators are engineered in the USA and built in the USA using domestic and foreign parts

Generac Guardian 24,000W Home Standby Generator

  • Takes up 70% less space when compared to other output products
  • Be ready for power outages at all times with a Generac Standby Generator

Firman H08051 8,000 Watt Dual Fuel Electric Start Generator

  • 439cc dual fuel engine with low oil shut off and cast iron sleeve
  • 8 gallon tank provides up to 12hrs of run-time. Propane tank not included

Champion 12.5-kW Home Standby Generator with 100-Amp Outdoor Switch 100179

  • Our innovative gull-wing design provides easy access to the engine and control panel and allows a full view of the onboard control system.

Generac Standby Generator 20/18kW 200SE 7039

  • True Power technology delivers superior power quality with less than 5% total harmonic distortion
  • Quiet-Test self-test mode is quieter and uses less fuel

Generac 70351 16KW Air-Cooled Guardian Series Wi-Fi Standby Generator

  • Generac generators and engines are engineered and built in the USA using domestic and foreign parts.
  • Transfer switch not included.

Generac 7077 20/17 KW Air-Cooled Standby Generator

  • No dB Noise Level
  • 66 Enclosure Type
  • Aluminum Maximum Watts (LP)

Generac Guardian 16KW Home Backup Generator with 16 Circuit 100 Amp Switch 70361

  • Financing Available
  • Authorized Dealer

Generac RG03824ANAX 38kW 120/240V 1PH Protector Automatic Standby Generator

  • 38 / 38

Firman T04073 Tri-Fuel 5000/4000 W 120/240 Electric Start Portable Generator with Co Alert

  • Financing Available
  • Authorized Dealer
Generac 7209 Guardian 24kW Home Standby Generator
  • True Power technology delivers superior power quality with less than 5% total harmonic distortion.
  • Generac G-Force engine requires less maintenance.
Generac Guardian 10kw Home Backup Standby Generator 7172
  • True Power Technology
  • G-Force Engine
  • Quiet-Test Self-Test Mode
Kohler 20RCAL-200SELS 20kW Standby Generator, Tan
  • Compatible to run on natural gas (18kW) or liquid propane (20kW) with simple switching between natural gas and liquid propane in the field
Generac Guardian 24kW Home Standby Generator – 7210
  • Takes up 70% less space when compared to other output products
  • Using PWRview you could save enough to pay for your generator
Generac 7228 18KW Standby Generator
  • 18000 W
Generac 70422 Guardian Series Air-Cooled Standby Generator, Aluminum
  • 2200/19500 Watts
Generac Air-Cooled Standby Generator 6998
  • Powers 8-circuits of your home with the 50-amp, NEMA 1 (indoor rated only) lightweight transfer switch
  • Generac generators are engineered in the USA and built in the USA using domestic and foreign parts
Generac Guardian 24,000W Home Standby Generator
  • Takes up 70% less space when compared to other output products
  • Be ready for power outages at all times with a Generac Standby Generator
Firman H08051 8,000 Watt Dual Fuel Electric Start Generator
  • 439cc dual fuel engine with low oil shut off and cast iron sleeve
  • 8 gallon tank provides up to 12hrs of run-time. Propane tank not included
Champion 12.5-kW Home Standby Generator with 100-Amp Outdoor Switch 100179
  • Our innovative gull-wing design provides easy access to the engine and control panel and allows a full view of the onboard control system.
Generac Standby Generator 20/18kW 200SE 7039
  • True Power technology delivers superior power quality with less than 5% total harmonic distortion
  • Quiet-Test self-test mode is quieter and uses less fuel
Generac 70351 16KW Air-Cooled Guardian Series Wi-Fi Standby Generator
  • Generac generators and engines are engineered and built in the USA using domestic and foreign parts.
  • Transfer switch not included.
Generac 7077 20/17 KW Air-Cooled Standby Generator
  • No dB Noise Level
  • 66 Enclosure Type
  • Aluminum Maximum Watts (LP)
Generac Guardian 16KW Home Backup Generator with 16 Circuit 100 Amp Switch 70361
  • Financing Available
  • Authorized Dealer
Generac RG03824ANAX 38kW 120/240V 1PH Protector Automatic Standby Generator
  • 38 / 38
Firman T04073 Tri-Fuel 5000/4000 W 120/240 Electric Start Portable Generator with Co Alert
  • Financing Available
  • Authorized Dealer

1. Generac 7209 Guardian 24kW Home Standby Generator

Generac 7209 Guardian 24kW Home Standby Generator

  • True Power technology delivers superior power quality with less than 5% total harmonic distortion.
  • Generac G-Force engine requires less maintenance.
  • Quiet-Test self-test mode is quieter and uses less fuel.
  • Tough, durable all-weather, corrosion-resistant aluminum enclosure.
  • Pre-attached composite mounting pad.

Check Latest Price

Sold By Price
Amazon.com – Seller
Walmart – SavingSpot
Northern Tool
Electric Generators Direct

Product Details

Specifications

Details
Package Weight 514 lbs.
Rated Wattage 24000
MFG Brand Name Generac
Frame Material Aluminum
Current Range (A) 100

Reviews From Real Customers

Mike A.
Zachari C.
Thomas S.

2. Generac Guardian 10kw Home Backup Standby Generator 7172

Generac Guardian 10kw Home Backup Standby Generator 7172

  • True Power Technology
  • G-Force Engine
  • Quiet-Test Self-Test Mode
  • Tough, Durable All-Aluminum Enclosure with RhinoCoat

Check Latest Price

Sold By Price
Amazon.com – Seller
Lowe’s
Northern Tool
Norwall PowerSystems

Product Details

Specifications

Details
UL Listed Yes
Transfer Switch Amps 100
Rated Watts LP 10 kW
Surge Watts 10 kW
Fuel Type Multi-Fuel

Reviews From Real Customers

SnowmanXT
generac.com

3. Kohler 20RCAL-200SELS 20kW Standby Generator, Tan

Kohler 20RCAL-200SELS 20kW Standby Generator, Tan

  • Compatible to run on natural gas (18kW) or liquid propane (20kW) with simple switching between natural gas and liquid propane in the field
  • Includes RXT 200-amp outdoor-rated, service entrance rated automatic transfer switch
  • PowerBoost technology provides power to start large loads such as central air conditioners without dropping power to other appliances

Check Latest Price

Sold By Price
Amazon.com
Home Depot
Lowe’s
Electric Generators Direct

Product Details

Specifications

Details
Overload Protection Yes
Cooling Method Air cooled
Can Be Used for Campsites No
Can Be Used for Emergency Use Yes
Circuits Protected Whole house

Reviews From Real Customers

Ethel B.
Judith B.
Orie Z.

4. Generac Guardian 24kW Home Standby Generator – 7210

Generac Guardian 24kW Home Standby Generator - 7210

  • Takes up 70% less space when compared to other output products
  • Using PWRview you could save enough to pay for your generator
  • Generac generators and engines are engineered and built in the USA (Assembled in the USA using domestic and foreign parts)

Check Latest Price

Sold By Price
Amazon.com – Seller
eBay
Walmart – CPO Outlets
Acme Tools

Product Details

Specifications

Details
UL Listed Yes
Transfer Switch Amps 200
Rated Watts LP 24 kW
Fuel Type Multi-Fuel
Engine Cooling Air

Reviews From Real Customers

Bo M.
Ken i.W.
Dana N.

5. Generac 7228 18KW Standby Generator

Generac 7228 18KW Standby Generator

  • 18000 W

Check Latest Price

Sold By Price
Amazon.com – Seller
Walmart
Electric Generators Direct
Generator Factory Outlet

Product Details

Specifications

Details
Weight 420 lb.
Color Beige
Volts 240 V
Engine Speed 3600 rpm
Low Oil Shutdown Yes

Reviews From Real Customers

Brett C.
Donald L.
Yeltarb

6. Generac 70422 Guardian Series Air-Cooled Standby Generator, Aluminum

Generac 70422 Guardian Series Air-Cooled Standby Generator, Aluminum

  • 2200/19500 Watts

Check Latest Price

Sold By Price
Amazon
eBay – tools-plus-outlet
Electric Generators Direct
Lowe’s

Product Details

Specifications

Details
Package Weight 476.0 lbs.
Rated Wattage 22000.0
MFG Brand Name Generac
Frame Material Aluminum
Current Range (A) 81.3-91.7

Reviews From Real Customers

CHAEJOHNNY S.
rowedy0ne
Glynn S.

7. Generac Air-Cooled Standby Generator 6998

Generac Air-Cooled Standby Generator 6998

  • Powers 8-circuits of your home with the 50-amp, NEMA 1 (indoor rated only) lightweight transfer switch
  • Generac generators are engineered in the USA and built in the USA using domestic and foreign parts
  • 3 Year Limited

Check Latest Price

Sold By Price
Amazon
Walmart – Rons Home and Hardware
Northern Tool
Grainger Industrial Supply

Product Details

Specifications

Details
Package Weight 350.000 lbs.
Installation Instructions Included Yes
MFG Brand Name Generac
Thickness (in) 27.000000
Net Package Quantity/Net Content 1.0000

Reviews From Real Customers

Liran B.

8. Generac Guardian 24,000W Home Standby Generator

Generac Guardian 24,000W Home Standby Generator

  • Takes up 70% less space when compared to other output products
  • Be ready for power outages at all times with a Generac Standby Generator
  • Generac generators and engines are engineered and built in the USA (Assembled in the USA using domestic and foreign parts)
  • *Based on internal company data; savings will vary based on multiple factors, including energy habits, size of home, and number of occupants

Check Latest Price

Sold By Price
Amazon
Tractor Supply Company
Electric Generators Direct
Norwall PowerSystems

Product Details

Specifications

Details
Length 48 in.
Wheel Kit Included No
Weight 455 lb.
Fuel Gauge Yes
Low Oil Shutdown Yes

Reviews From Real Customers

Steve C.
Tom V.
Phil T.

9. Firman H08051 8,000 Watt Dual Fuel Electric Start Generator

Firman H08051 8,000 Watt Dual Fuel Electric Start Generator

  • 439cc dual fuel engine with low oil shut off and cast iron sleeve
  • 8 gallon tank provides up to 12hrs of run-time. Propane tank not included
  • Multi feature control panel with covered outlets
  • 10″ Heavy Duty Wheels and High Folding Handle
  • Includes engine oil, funnel and assembly tool kit and 5.5 ft LPG regulator hose

Check Latest Price

Sold By Price
Amazon
Walmart
West Marine
AP Electric & Generators

Product Details

Specifications

Details
Engine Type OHV
Wheel Kit Included Yes
Color Black/Yellow
Fuel Gauge Yes
Wheel Size 10 in.

Reviews From Real Customers

Paul S.
Blaine L.
firmanpowerequipment.com

10. Westinghouse WGen20000 – 20,000 Watt Electric Start Portable Generator

Westinghouse WGen20000 - 20,000 Watt Electric Start Portable Generator

Check Latest Price

Sold By Price
Amazon
Generators Prime
Norwall PowerSystems

Product Details

Specifications

Details
Running Watts 20,000 Watts
Peak Watts (starting watts) 28,000 Watts
Running Amps 166.7 at 120 Volts; 83.3 at 240 Volts
Peak Amps 233.3 at 120 Volts; 116.7 at 240 Volts
GFCI 120-Volt, 20 Amp Outlets Only

Reviews From Real Customers

Michael71009
FreeThinker
Tommy3245

11. Champion 12.5-kW Home Standby Generator with 100-Amp Outdoor Switch 100179

Champion 12.5-kW Home Standby Generator with 100-Amp Outdoor Switch 100179

  • Our innovative gull-wing design provides easy access to the engine and control panel and allows a full view of the onboard control system.
  • The alternator produces less than 5% total harmonic distortion (THD) to ensure safe use with even the most sensitive electronics.
  • This generator is available for all 50 states, and the ATS100 is UL and cUL listed.

Check Latest Price

Sold By Price
Amazon
eBay
Walmart – Online Supply Center
Norwall PowerSystems

Product Details

Specifications

Details
Rated Watts 12.5kW LP/11kW NG
Rated Amps 52 LP/45.8 NG
Voltage 120/240V Single Phase
AC Ton Rating 3 Ton
Enclosure Steel

12. Generac Standby Generator 20/18kW 200SE 7039

Generac Standby Generator 20/18kW 200SE 7039

  • True Power technology delivers superior power quality with less than 5% total harmonic distortion
  • Quiet-Test self-test mode is quieter and uses less fuel
  • Tough, durable all-weather, corrosion-resistant aluminum enclosure
  • Pre-attached composite mounting pad
  • Smart, user-friendly Generac Evolution Controller features a dual-line multilingual LCD display

Check Latest Price

Sold By Price
Amazon
theofficestore.com
Neobits.com

Product Details

Specifications

Details
Wattage 17,500 W
Voltage 120/240 Single-Phase
Number of Poles 2
Frequency 60Hz
HP/CC 999cc

Reviews From Real Customers

kim w.
shopper8791
michael l.

13. Kubota GL1100 Lowboy II Diesel Industrial Generator 11kW – GL11000

Kubota GL1100 Lowboy II Diesel Industrial Generator 11kW - GL11000

Check Latest Price

Sold By Price
Acme Tools
Electric Generators Direct
Orchard Generator Indonesia
Norwall PowerSystems

Product Details

Specifications

Details
Fuel Diesel
Style Portable Generator, Skid Mounted Generator
Starting Choice @ Checkout
Watts (Rated) 10,000
Watts (Surge) 11,000

Reviews From Real Customers

Grady S.
MIKE H.
Russell Mooneyham

14. Generac 70351 16KW Air-Cooled Guardian Series Wi-Fi Standby Generator

Generac 70351 16KW Air-Cooled Guardian Series Wi-Fi Standby Generator

  • Generac generators and engines are engineered and built in the USA using domestic and foreign parts.
  • Transfer switch not included.

Check Latest Price

Sold By Price
FactoryPure

Product Details

Specifications

Details
Package Weight 419.0 lbs.
Rated Wattage 16000.0
MFG Brand Name Generac
Frame Material Aluminum
Current Range (A) 16000

Reviews From Real Customers

Dan'l
Dave N.
tylertool.com

15. Generac 7077 20/17 KW Air-Cooled Standby Generator

Generac 7077 20/17 KW Air-Cooled Standby Generator

  • No dB Noise Level
  • 66 Enclosure Type
  • Aluminum Maximum Watts (LP)
  • 20,000 Maximum Watts (NG)
  • 17, 000 Rated Voltage 3Phase

Check Latest Price

Sold By Price
Northern Tool
NationwideGenerators.com
Grainger Industrial Supply
Zoro

Product Details

Specifications

Details
Package Weight 466.000 lbs.
Rated Wattage 20000.000000
MFG Brand Name Generac
Frame Material aluminum
Current Range (A) 59-69.4

Reviews From Real Customers

rossmhrm

16. Generac RG03624KNAX Auto Standby Generator,36 LP/36 NGkW

Generac RG03624KNAX Auto Standby Generator,36 LP/36 NGkW

Check Latest Price

Sold By Price
Grainger Industrial Supply
Zoro

Product Details

Specifications

Details
Generator Fuel Type Liquid Propane/Natural Gas
Phase Three
Generator Voltage 277V AC/480V AC
Amps 125.0
Transfer Switch Included No

17. Generac Guardian 16KW Home Backup Generator with 16 Circuit 100 Amp Switch 70361

Generac Guardian 16KW Home Backup Generator with 16 Circuit 100 Amp Switch 70361

  • Financing Available
  • Authorized Dealer

Check Latest Price

Sold By Price
Justin Power Equipment
Mr & Mrs Fast Sale
FactoryPure

Product Details

Specifications

Details
Voltage 120/240V
Amperage 66.6 Amp
Phase Single Phase
Starting System 12v Auto Start
Engine OHVI

Reviews From Real Customers

Vancouver Island Canada
Laurie Y.
Emanuel P.

18. Generac RG03824ANAX 38kW 120/240V 1PH Protector Automatic Standby Generator

Generac RG03824ANAX 38kW 120/240V 1PH Protector Automatic Standby Generator

  • 38 / 38

Check Latest Price

Sold By Price
Northern Tool
Orchard Generator Indonesia
ACWholesalers.com
Norwall PowerSystems

Product Details

Specifications

Details
UL Listed Yes
Rated Watts LP 38 kW
Battery Included No
Surge Watts 38 kW
Battery Required Yes

19. Firman T04073 Tri-Fuel 5000/4000 W 120/240 Electric Start Portable Generator with Co Alert

Firman T04073 Tri-Fuel 5000/4000 W 120/240 Electric Start Portable Generator with Co Alert

  • Financing Available
  • Authorized Dealer

Check Latest Price

Sold By Price
Walmart
OurGenerators.com
FactoryPure
toolmarty

Product Details

Specifications

Details
CARB Certified YES
EPA Certified YES
cETL Certified YES
NOM Certified YES
UL Certified NO

Reviews From Real Customers

KevDar
ejeffe
writedoc

20. Generac Guardian 16KW Aluminum Home Standby Generator w/ Wi-Fi

Generac Guardian 16KW Aluminum Home Standby Generator w/ Wi-Fi

Check Latest Price

Sold By Price
Mr & Mrs Fast Sale

Product Details

Specifications

Details
Wattage 16,000 Watts
Engine Displacement 999cc
Voltage 120/240V
Amperage at 240V LPG and NG 66.6A
Engine/Alternator Speed 3,600 Rpm

Conclusion

A standby diesel generator for home use is a great investment. It provides a reliable source of power in the event of an outage and can help keep your family safe and comfortable.

Leave a Comment