Free Freight on Most Electric GeneratorsFree Shipping On Electric Generators (Lower 48)
Home » Whole House Generators » Home Standby Generators » Emergency Generators » 20-29 kW Whole House Generators
Standby Sizing Calculator
Standby Sizing Calculator

20-29 kW Whole House Generators

Quick Search
Plus Icon
Loading Image
Filter ▼
  • Best Selling
  • Price: Low to High
  • Price: High to Low
  • Name: A-Z
  • Name: Z-A
  • Recommends Only
  • Closeouts Only
  • In-stock Only
  • Next Day Air Only
  • Availability
Model Number 7043-SD-1 is a Hot Seller
Learn More About Generac Guardian 7043-SD-1
Generac Guardian
Generac Guardian 22kW Standby Generator System (200A Service Disconnect + AC Shedding) (Scratch & Dent)
Model: 7043-SD-1
Write a Review
Ask a Question
View All Scratch & Dent 20-29 kW Whole House Generators
Scratch & Dent
$4,697.00
Was 
$4,797.00
SAVE $100.00
Only 1 In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Add To Cart
Model Number EGD-70432KIT is the Number 1 Seller
Learn More About Generac Guardian EGD-70432KIT
Generac Guardian
Generac Guardian™ 22kW Standby Generator System (200A Service Disconnect + AC Shedding) w/ Wi-Fi + 3" GenPad™ + Battery
Model: EGD-70432KIT
28% Buy This
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5(12)
Q&A (4)
Model EGD-70432KIT includes Free 10 Year Warranty After Rebate
Free 10 Year Warranty After Rebate
$5,396.98
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Model Number 70432 is the Number 2 Seller
Learn More About Generac Guardian 70432
Generac Guardian
Model 70432 is a Recommended Product
Generac Guardian™ 22kW Standby Generator System (200A Service Disconnect + AC Shedding) w/ Wi-Fi
Model: 70432
27% Buy This
4.6 out of 54.6 out of 54.6 out of 54.6 out of 54.6 out of 5(71)
Q&A (11)
Model 70432 includes Free 10 Year Warranty After Rebate
Free 10 Year Warranty After Rebate
$5,047.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Model Number 70422 is the Number 3 Seller
Learn More About Generac Guardian 70422
Generac Guardian
Generac Guardian™ 22kW Aluminum Home Standby Generator w/ Wi-Fi
Model: 70422
9% Buy This
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5(13)
Q&A (1)
Model 70422 includes Free 10 Year Warranty After Rebate
Free 10 Year Warranty After Rebate
$4,517.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Model Number EGD-70432KIT-QT8200 is the Number 4 Seller
Learn More About Generac Guardian EGD-70432KIT-QT8200
Generac Guardian
Generac Guardian™ 22kW Standby Generator System (200A Service Disconnect + AC Shedding) w/ Wi-Fi + QwikHurricane® Pad + Battery
Model: EGD-70432KIT-QT8200
5% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
Q&A (1)
Model EGD-70432KIT-QT8200 includes Free 10 Year Warranty After Rebate
Free 10 Year Warranty After Rebate
$5,398.74
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Model Number 70391 is the Number 5 Seller
Learn More About Generac Guardian 70391
Generac Guardian
Generac Guardian™ 20kW Standby Generator System (200A Service Disconnect + AC Shedding) w/ Wi-Fi
Model: 70391
4% Buy This
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5(7)
Ask a Question
Model 70391 includes Free 10 Year Warranty After Rebate
Free 10 Year Warranty After Rebate
$4,847.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Model Number 40621 is a Featured Product
Learn More About Briggs & Stratton 40621
Briggs & Stratton
Briggs & Stratton 20kW Standby Generator System (Steel) (200A Service Disconnect + AC Shedding)
Model: 40621
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
Ask a Question
View All 20-29 kW Whole House Generators on Sale
On Sale Ends 01/31
$4,409.10
Was 
$4,899.00
SAVE $489.90
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Generac Guardian EGD-70391KIT
Generac Guardian
Generac Guardian™ 20kW Standby Generator System (200A Service Disconnect + AC Shedding) w/ Wi-Fi + 3" GenPad™ + Battery
Model: EGD-70391KIT
3% Buy This
Write a Review
Q&A (1)
Model EGD-70391KIT includes Free 10 Year Warranty After Rebate
Free 10 Year Warranty After Rebate
$5,196.98
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Kohler 20RESCL-200SELS
Kohler
Model 20RESCL-200SELS is a Recommended Product
Kohler 20RESCL-200SELS 20kW Composite Standby Generator System (200A Service Disc. w/ Load Shedding)
Model: 20RESCL-200SELS
3% Buy This
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5(32)
Q&A (4)
$4,885.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Generac Guardian EGD-70432KIT-A
Generac Guardian
Generac Guardian™ 22kW Standby Generator System (200A Service Disconnect + AC Shedding) w/ Wi-Fi + 4" Hurricane GenPad™ + Battery
Model: EGD-70432KIT-A
3% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(4)
Q&A (3)
Model EGD-70432KIT-A includes Free 10 Year Warranty After Rebate
Free 10 Year Warranty After Rebate
$5,525.99
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Kohler EGD-20RESCL-200SELSKIT-QT8200
Kohler
Kohler 20kW Composite Standby Generator System (200A Service Disc. w/ Load Shedding) + QwikHurricane® Pad + Battery
Model: EGD-20RESCL-200SELSKIT-QT8200
2% Buy This
Write a Review
Ask a Question
$5,184.98
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Generac Guardian 7043-WIFI
Generac Guardian
Generac Guardian™ 22kW Standby Generator System (200A Service Disconnect + AC Shedding) w/ Wi-Fi
Model: 7043
2% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(3)
Ask a Question
$5,047.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Generac Guardian 70381
Generac Guardian
Generac Guardian™ 20kW Aluminum Home Standby Generator w/ Wi-Fi
Model: 70381
2% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(6)
Ask a Question
Model 70381 includes Free 10 Year Warranty After Rebate
Free 10 Year Warranty After Rebate
$4,277.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Kohler 20RCAL-200SELS
Kohler
Kohler 20RCAL-200SELS 20kW Aluminum Standby Generator System (200A Service Disc. w/ Load Shedding)
Model: 20RCAL-200SELS
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
Ask a Question
$4,997.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Cummins Power Generation C20N6HC
Cummins Power Generation
Model C20N6HC is a Recommended Product
Cummins RS20AC - 20kW Quiet Connect™ Series Home Standby Generator System (200A Service Disconnect)
Model: C20N6HC
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(7)
Q&A (4)
$4,815.00
Factory-Direct
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Kohler 20RESC
Kohler
Kohler 20kW Composite Home Standby Generator
Model: 20RESC
1% Buy This
4.5 out of 54.5 out of 54.5 out of 54.5 out of 54.5 out of 5(4)
Q&A (3)
$4,216.00
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Generac Protector RG02224ANAX
Generac Protector
Generac Protector QS® 22kW Automatic Standby Generator (Premium-Grade)(120/240V Single-Phase)
Model: RG02224ANAX
1% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(4)
Q&A (1)
$9,097.00
Factory-Direct
Freight Icon
Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Briggs & Stratton 40623
Briggs & Stratton
Briggs & Stratton 20kW Standby Generator System (Steel) (400A Split Service Disconnect + AC Shedding)
Model: 40623
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Ask a Question
View All 20-29 kW Whole House Generators on Sale
On Sale Ends 01/31
$5,309.10
Was 
$5,899.00
SAVE $589.90
Only 5 In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Generac Guardian 70771
Generac Guardian
Generac Guardian™ 20kW Aluminum Standby Generator w/ Wi-FI (120/208V 3-Phase)
Model: 70771
1% Buy This
Write a Review
Ask a Question
$4,649.00
Only 4 In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Generac Protector RG02724ANAX
Generac Protector
Model RG02724ANAX is a Recommended Product
Generac Protector QS® 27kW Automatic Standby Generator (Premium-Grade)(120/240V Single-Phase)
Model: RG02724ANAX
1% Buy This
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5(7)
Q&A (2)
$10,797.00
Only 2 In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Kohler 20RCA
Kohler
Kohler 20kW Aluminum Home Standby Generator
Model: 20RCA
1% Buy This
Write a Review
Ask a Question
$4,438.00
Only 5 In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Generac Protector RG02515ANAX
Generac Protector
Generac Protector® 25kW Automatic Standby Generator (Aluminum)(120/240V Single-Phase)
Model: RG02515ANAX
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Q&A (1)
$8,897.00
Only 2 In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Kohler EGD-20RESCL-200SELSKIT
Kohler
Kohler 20kW Composite Standby Generator System (200A Service Disc. w/ Load Shedding) + 3" Mounting Pad + Battery
Model: EGD-20RESCL-200SELSKIT
1% Buy This
Write a Review
Q&A (1)
$5,184.98
In-Stock
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About Cummins Power Generation EGD-C20N6HCKIT
Cummins Power Generation
Cummins RS20AC - 20kW Quiet Connect™ Series Home Standby Generator System (200A Service Disconnect) + 3" Mounting Pad
Model: EGD-C20N6HCKIT
1% Buy This
Write a Review
Ask a Question
$5,114.00
Factory-Direct
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Hide