Generac
Instant Savings

GP8000E Watt Generator CO-Sense with Transfer Switch Outlet for Home Backup

|589 ratings
Item # 990557589
Current price is Now $749.00
was $899.00
$150 off
Ends Sep 09
Prices may vary in club and online
How do you want your item?

Freight shipping

Free shipping
Columbus, 43215
Return or replace anytime.
Sam's credit card
Get a $30 statement credit when you open an account and use it to make $30 in eligible Sam's Club purchases within 30 days¹.

Highlights

  • Power Rush advanced technology delivers over 30% more starting capacity for enhanced performance
  • CO-Sense technology stops and alerts to protect against hazardous carbon monoxide
  • Durable OHV engine with splash lubrication ensures long engine life and idle control reduces noise while conserving fuel
  • Large-capacity steel fuel tank with fuel gauge provides up to 11-hour run-time at 50% load
  • Electric start model includes battery for easy operation
We also recommend

Generac iQ4000 Dual Fuel Portable Generator with Adapter Cord $819.00 Was $899.00

Generac iQ4000 Dual Fuel Portable Generator with Adapter Cord
current price Now $819.00, Was $899.00

Generac iQ4000 Dual Fuel Portable Generator with Adapter Cord

4.3911 out of 5 stars
4.3911 out of 5 Stars. 358 reviews
Sponsored
gp8000e watt generator co-sense with transfer switch outlet for home backup Generac GP8000E 8,000-watt gasoline portable generator, 3/4 front view with orange steel fuel tank and gauge, black tubular frame, control panel displaying CO-Sense badge and transfer switch outlet, visible battery and starter wiring, two-wheel cart with rubber tires and fold-down feet; PowerRush enhanced starting capacity makes it suitable for home backup and jobsite power.
GP8000E Watt Generator CO-Sense with Transfer Switch Outlet for Home Backup
Hero image 0 of GP8000E Watt Generator CO-Sense with Transfer Switch Outlet for Home Backup, 0 of 5

About this item

Product details

Powerful and Versatile Performance

The Generac GP8000E 8,000-Watt gasoline-powered portable generator is designed to handle a variety of applications with ease. Whether you need reliable power for job sites, home use, or outdoor events, this generator delivers dependable performance to meet your needs.

Enhanced Starting Capacity with PowerRush™ Technology

Equipped with Generac's innovative PowerRush™ advanced technology, the GP8000E provides over 30% more starting capacity. This feature allows you to power more devices and equipment simultaneously, making it an efficient solution for demanding tasks.

Convenient Electric Start

Starting the GP8000E is effortless thanks to its electric start functionality. This user-friendly feature ensures quick and hassle-free operation, saving you time and effort when you need power the most.

Affordable and Reliable Solution

Combining affordability with robust performance, the Generac GP8000E is a practical choice for those seeking a reliable portable generator. Its durable design and versatile capabilities make it a valuable addition to any power setup.

info:
If the item details above aren't accurate or complete, we want to know about it. 

Specifications

Engine Type: Generac OHV Engine

Hour Meter: Tracks maintenance intervals

Accessories Included: 25 ft extension cord, wheel and handle kit

Run Time: 13-hour gas run time / 16-hour propane run time at 50% load

Fuel Tank Capacity: 3-gallon gas tank or 20lb propane tank

Start Type: Electric Start

Safety Features: Low-oil level shutdown for engine protection

Compatibility: Homelink Transfer Switch Compatible

Additional Protection: CO Protection

Member ratings & reviews

4.6 out of 5 stars
stars
589 ratings589 reviews
Write a review
  1. 5 stars77% (454)
  2. 4 stars15% (87)
  3. 3 stars2% (12)
  4. 2 stars2% (10)
  5. 1 star4% (26)
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 589 reviews

May 19, 2026
Reviewer name: TaylorB
5 out of 5 stars
5 out of 5 stars review

Reliable and Powerful generator.

[This review was collected as part of a promotion.] This generator came almost fully put together. Super simple instructions for putting together/use and I love how powerful it is. It's easy to fuel up and set up the controls aren't to complicated. We used it with multiple bad snowstorms this last year and it never let us down. Would absolutely recommend and it's worth every penny.

Review from generac.com
Helpful?6CERFK1ZWWG020001867981
Dec 30, 2025
Reviewer name: Ray A
5 out of 5 stars
5 out of 5 stars review

Solid, well-made unit.

This generator is everything it claims to be. Easy to set-up, use and is reliable. I hooked it up to my home for a test-run the day after I received it. It started up instantly and powered the entire "critical function" sub-panel in my home (HVAC, water/well, freezers/refrigerators, water heater (gas), water softener, garage door, washer/dryer (gas), WIFI/network and critical lights/outlets). We built our home in 1998 (just prior to "Y2K", ha!) and included the sub-panel. I toyed with the idea of now installing a whole-home generator - but that would have been an $8-10K investment - this was <$1K. For the roughly one power outage we experience every 2-3 years, this is a good, economical solution.

Review from generac.com
Helpful?6CERFK1ZWWG020001867981
Dec 27, 2025
Reviewer name: leavanni_1253
5 out of 5 stars
5 out of 5 stars review

Great Generator!!! So grateful for it!!

[This review was collected as part of a promotion.] Wonderful generator! Heavy duty. Gas fueled. Works great and cost effective. The only downside is that it’s very heavy and you need more than one very strong person for initial set up or to even move it and put it together!

Review from generac.com
Helpful?6CERFK1ZWWG020001867981

Related pages