Generac GP18000EFI 18000W/22500W Low THD Gas Generator Electric Start New
Manufacturer: Generac
SKU: GP18000EFI




















Default Title
QTY
(888) 999-1522
$ 4,399.00
$ 4,249.00
$ 4,249.00
17

This item ships for free. Freight shipments include liftgate at no additional charge.
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$ 709 / Month
6 months interest FREE


In Stock

ON SALE!

Ships same business day from San Antonio, TX
If ordered by 2 PM ET
Extended Warranty
Factory Warranty
- This item comes with a 3 year limited factory warranty.
Extended Warranties
-
Extends factory warranty to 2, 3, or 5 total years
-
Covers functionality issues for 2, 3, or 5 years
-
Local repair options always available
-
Free replacement if repair is not possible
-
No deductibles or hidden fees
-
Full parts and labor coverage
$0
(Included)
- This item comes with a 3 year limited factory warranty.
(Details)
-
Extends factory warranty to 2 total years
-
Covers functionality issues for 2 years
-
Local repair options always available
-
Free replacement if repair is not possible
-
No deductibles or hidden fees
-
Full parts and labor warranty
(Details)
-
Extends factory warranty to 3 total years
-
Covers functionality issues for 3 years
-
Local repair options always available
-
Free replacement if repair is not possible
-
No deductibles or hidden fees
-
Full parts and labor warranty
(Details)
-
Extends factory warranty to 5 total years
-
Covers functionality issues for 5 years
-
Local repair options always available
-
Free replacement if repair is not possible
-
No deductibles or hidden fees
-
Full parts and labor warranty
Warranty has been added in! Please click add to cart.
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Product Overview
From emergency home backup to DIY projects to the jobsite, the Generac GP18000EFI portable generator provides high wattage, dependable portable power. Equipped with an 816cc engine with Electronic Fuel Injection, the GP18000EFI delivers power efficiently, providing up to 9 hours of runtime at 50% load. TruePower™ Technology safely powers sensitive electronics, appliances and tools while onboard COsense® Technology provides powerful protection against hazardous carbon monoxide.
The GP18000EFI also features electric start (battery included), low-oil shutdown protection, circuit breaker protected outlets and an hour meter with maintenance resets. The included never-flat wheel kit and available lifting eye accessory make transportation easy around the home or jobsite.



3 year factory warranty
Brand new in box
Fast shipping
Authorized Generac dealer
Plug Types

×4
120v 20 Amp Standard Receptacle
(5-20R)

×1
120v 30 Amp Twist Lock
(L5-30R)

×1
120/240v 30 Amp Twist Lock
(L14-30R)

×1
120v/240v 50 Amp Heavy Duty Outlet
(L14-50R)
Plug Types

×4
120v 20 Amp Standard Receptacle
(5-20R)

×1
120v 30 Amp Twist Lock
(L5-30R)

×1
120/240v 30 Amp Twist Lock
(L14-30R)

×1
120v/240v 50 Amp Heavy Duty Outlet
(L14-50R)
Features
- Featuring COsense® Technology: STOPS. ALERTS. SAVES. Powerful protection against hazardous carbon monoxide.
- Generac 816cc EFI Engine – Delivers the right amount of power to get the best performance and efficiency out of your engine
- TruePower™ Technology – With less than 5% THD, safely powers sensitive electronics and tools
- Low-Oil Pressure Shutdown – Automatically safeguards engine from damage
- Large Capacity Fuel Tank – With incorporated fuel gauge, provides durability and extended run times
- Homelink™ Manual Transfer Switch Compatible – When paired with a manual transfer switch, the GP18000EFI is powerful enough to provide whole home backup and is a great alternative to a Home Standby Generator.
- Hardened 1 ¼” Steel Tube Cradle – For added strength and durability
- Hour Meter – Tracks maintenance intervals
- Heavy-Duty, Never-Flat Wheels – For reliable portability
- Electric Start – Battery Included – Provides hassle-free start-up
Specifications
Manufacturer's Warranty | 3 Yr Consumer Limited |
Surge Watts | 22,500 |
Rated Watts | 18,000 |
Start Type | Electric |
Engine | Generac |
Engine Displacement (cc) | 816 |
Run Time | 9 hrs. @ 1/2 load |
Fuel Type | Gasoline |
Fuel Capacity (gal.) | 14.2 |
Low Oil Shutdown | Yes |
Battery Included | Yes |
Battery Required | Yes |
CARB Compliant | Yes |
Dimensions L x W x H (in.) | 58.5 x 30.9 x 36.5 |
Product Weight (lbs.) | 469 |
Package Contents
Generac GP18000EFI generator
Wheel kit
Battery
Bottle of new oil
Manual
Warranty



This item comes with a 3 year limited factory warranty.
Manuals & Documentation
Customer Reviews (15)
nice
I bought to use on my food trailer! Excellent!!!!! Plenty of power.
The 18000W/22500W portable generator weighs in at about 500 lbs. but it’s easy to start and runs great. The generator will run my entire house excluding our oven. It will also run our air conditioner but to help with the heavy draw at startup I had a soft start installed on my AC. I didn’t have an auto switch gear installed but a manual switch gear was which saved us a bunch of money on the product and installation charges. We’re happy that the generator has a 15 gallon tank which makes for long run times at lower draws.
I would recommend this to anyone who can’t have a large propane tank installed for stationary generator.
Absolutely a great experience delivered when promised no damage went together perfect and ran the same way
Generac GP18000EFI 18000W/22500W Low THD Gas Generator Electric Start New
Powers my Entire house 1650sq ft with a 3 ton AC unit without a soft start . I did not turn on the oven or washer & dryer , not going to be used in a power outage anyway . Set up my mom's house and powered up her house with a 4ton ac easy . I also setup my office , 6 crazy computers and 2ton ac .
The 5%THD Matters ! !
So i can power 3 different locations by loading it up and taking it to where its needed and plug it in.
Great unit but it is HeAvY !
Powered moms house during Helene and she was so happy .