Model#: GRCN5735

What are the different product conditions?

Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 120 day money back guarantee
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New or Recon items with possible minor cosmetic damage; CPO 120 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Generac GP17500E GP Series 17,500 Watt Portable Generator

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Freight Orders

Freight deliveries require a delivery time be scheduled and someone must be present at the time of delivery to inspect and sign for the merchandise. A representative from the freight carrier will call the phone number entered at checkout to schedule the delivery.

Liftgate Service

For freight deliveries, you have the option of adding a liftgate to your delivery. A liftgate is the device that lowers a product from the truck to ground level.

CPO recommends adding liftgate service for freight deliveries exceeding 100 lbs if you do not have a loading dock or fork lift at the delivery address. Additional charges may apply. The liftgate option will be presented during the checkout process.

Please note that liftgate service only ensures the product is removed from the truck. We recommend you have the additional help of two to four people to move the product to its desired location because drivers are not required to assist.

Requesting liftgate service after ordering may result in additional charges and delays.

In Stock
Ships Monday

Product Overview


With a range of power options from 800 to 17,500 Watts, Generac has an affordable, reliable portable generator for any application.
Power the fun stuff or cover an emergency with a GP Series portable generator. Affordable reliability and features not usually found on basic portable models makes these units a favorite for home use, camping, job sites or outdoor events.
  • Low-oil shutdown detects low oil levels to prevent engine damage
  • Low-tone mufflers for quieter operation
  • Heavy-duty hardened steel tube cradle gives extra strength and durability
  • Circuit breaker protected outlets guard against circuit overload
  • Hour meter tracks usage between maintenance sessions
  • Never-flat wheels for better portability
  • Electric start for easy start up
  • 16 gallon fuel tank for extended run time
  • Idle control increases fuel efficiency
  • Lifting eye allows for easy transport
  • Good Housekeeping Seal of Approval
  • Unit not for use or sale in California, CARB compliant units available
  • Battery
  • Engine Oil
  • Maintenance Kit
  • Instruction Sheets


Series: GP Series
Length: 49 in.
Width: 31 in.
Depth: 39 in.
Weight: 390 lbs.
Alternator Type: Brushed
Amperage: 145.8/72.0
CARB Compliant: No
Engine Displacement: 992cc
Engine Make: Generac
Engine Model: OHVI
Engine Speed (RPM): 3600
Frame Type: 2-Wheel Cage
Fuel Tank Capacity: 16 gal.
Fuel Type: Gasoline
Max. Watts: 26250
Number of Outlet(s): 9
Outlet Types: (2) 120V 20A 5-20R GFCI, (2) 120V 20A 5-20R, (2) 120V 30A L5-30R Twist-Lock, (1) 120/240V 30A L14-30R Twist-Lock, (1) 120/240V 50A 14-50R, (1) 12V DC
Rated Watts: 17500
Run Time (50% Load): 10 hrs.
Starting System: Electric/Recoil
Voltage: 120/240V
Voltage Regulation: Automatic
Wheel Size: 12 in.
Wheel Type: Pneumatic



4.9 / 5.0
67 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Yes, I would recommend this to a friend (7)
Powerful (7)
Heavy (1)
Saved by Generac 17,000 Watt generator
Bought the biggest of all, the 17,000 Watt generator some years ago, and never used it until now. Living in Florida, you never know, when you need it, and now with Hurricane Irma, we lost power for several days. Backfeed my house at the panel, and supplied power to all my A/C untis (3 unit total) exterior lighting, etc, since we were the only house among 90 inour neighborhood, with full power, A/C, lights, etc. Unit started right away, and ran for 5 days 24/7. Highly recommendended. Only wish, you could have propane option at the flip of a switch, just in case. All gas stations ran out of fuel, so it would be a nice optional feature.
September 18, 2017
Originally posted at
Great unit with power to spare!
I purchased this generator after a three day power outage in 2011. It just finished its first tour of duty on a seven day outage here in Charleston, WV. It ran my entire house..including central A/C and even provided 120V service to my neighbor. It uses a little over a gallon of gas per hour but it's a small price to pay to keep our lives comfortable in 100 degree heat with no utility power. This is the portable unit to own.
July 8, 2012
Originally posted at
Great value
Just purchased my first Generac, very happy with the quality. Loose power in our area, most people in our area have the automatic standby units with great reliability. We're selling soon so we went with the large portable one.
December 13, 2015
Originally posted at
Saved us after Irma
Living in the outskirts of Gainesville, FL. we lose power on a constant basis, and becomes a constant nuisance to my family and myself. So the following year I determined to take my tax return and buy a new generator. I researched multiple generators in finally set my mind on the Generac 17500. Since receiving my generator in February I've used it seven times running it 4 to 5 hours with no problems, then Irma hit. I ran this generator for over seven days nonstop and it was a lifesaver. I cannot thank Generac and the people who built this generator for the power, comfort and support it has given my family. This is a well-built generator and I highly recommend it to anyone.

Robert Thompson DCC(SW)US Navy retired
September 17, 2017
Originally posted at
Excellent product!
Ran generator for approx. 50 hrs. straight, except for re-fueling, during Hurricane Irene. It provided reliable power and saved us quite a bit of money by not having to replace food. Also provided comfort as it powered my central air conditioning with no trouble. Easy to set up and start. Acceptable noise level for size of unit. Does like gas!
September 10, 2011
Originally posted at
Great Generator
Easy to put together. Runs my entire house at normal use. I even have a four ton and a two ton a/c unit.
July 13, 2014
Originally posted at
This generator arrived in perfect condition. Great packaging and easy to unpack. Assembly of the handle, wheels and rear prop are required. Also the battery hook up and adding oil. Caution (I had to drain some because I rushed the fill and by the time it all settled it was over the fill line) Take your time.

There is a replacement air filter and pre-filter as well as a new oil filter provided. Break in period of 30 hours.

I have yet to run it but it is really well put together and I will write another review after the break in period.

The recommendation is to run the unit for one hour every 30 days. This will keep it charged and ready to go.

I would recommend this unit to anyone who wants a whole house generator as it is the largest wattage available in a protable and I don't have propane/lp in my neighborhood. The permanent gas or diesel units of this size are much more expensive.
July 19, 2014
Originally posted at
High Quality Generator
Very impressed with the generator when it arrived. Was even more impressed when I unpacked, assembled, and fired it up. Runs like a charm. I will meet my needs 100% with ease. If I had to do it all over again I wouldn't change a thing. :)
September 17, 2015
Originally posted at
For the price it is great
This 17500 generac generator is ideal for our needs it has all the features I was looking for. And the price was within our budget. If you are looking for a powerful and economic generator this is the one to get
November 26, 2015
Originally posted at
The GP17500E is an excellent value.
This unit has more features than I expected ie: winter carb heating and an excellent variety of electrical connections that suit any purpose. I will be using it for a solar power system back-up. I have previously purchased a standby Generac (16kw) for our home and have been more than satisfied with it as well.
December 13, 2015
Originally posted at

Questions & Answers

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Browse 10 questions Browse 10 questions and 9 answers
best place to buy new battery for Generac generator
Mark on Feb 23, 2015
BEST ANSWER: We're sorry, due to hazardous shipping restrictions, we do not sell batteries for standby generators. You can find the required 26R wet cell battery that starts 8-60 kW standby generators at any auto parts store.
What is my coupon code when purchasing this Genarator?
Larry L on Jan 18, 2017
Generac 5735 GP Series 17,500 Watt Portable Generator
Generac 5735 GP Series 17,500 Watt Portable Generator
Generac 6392 50 Amp 100 ft. NEMA 1450 M/Locking CS6364 F Generator Power Cord
Generac 6392 50 Amp 100 ft. NEMA 1450 M/Locking CS6364 F Generator Power Cord
BEST ANSWER: Unfortunately, CPO does not have a coupon code for this generator at the time.
How do i get this thing to run 50A? I see all of the outlets are for a 30A plug, but there is a 50A breaker switch.
Kasey K on Oct 31, 2016
BEST ANSWER: Please contact Generac direct for Tech support. You can reach them at 888-436-3722.
What is the width of this unit with the wheel kit installed? Need to know if it will fit through a 36" door or will I have to install a wider door.
Randy on Feb 28, 2016
BEST ANSWER: The dimensions are 39.5 inches x 48.5 inches x 31 inches
Can you convert it to propane?
Tony on Dec 20, 2015
BEST ANSWER: No you can not
What power cord from generator to Transfer switch is recomended ???
BEST ANSWER: The Generac 6389 50 Amp 25 ft. NEMA 1450 M/Locking CS6364 F Generator Power Cord will work with the 5735 generator.
How frequent the battery requires charging, how much charging current?
pari on Mar 26, 2015
BEST ANSWER: The battery should not require a charge unless the unit sits without being turned on for a extended length of time.
Do you ship to West Africa and for how much? Can this equipment service a small motel with 12 rooms and 14 1 horsepower a/c units?
ajasco on Dec 6, 2013
BEST ANSWER: Currently we do not ship to West Africa.

New Vs. Reconditioned

What's the difference between New and Factory-Reconditioned?

Factory-Reconditioned products have been returned to the manufacturer and are restored to like-new operating condition; they go through a rigorous testing and inspection process. Plus, they offer a significant savings vs. new.
  • Reconditioned products may have minor cosmetic blemishes or scratches that do not affect item performance.
  • Reconditioned products may not come with all of the consumables the new version comes with (bits, sanding pads/papers, cases, etc.).
  • Both come with a manufacturer warranty and are covered by our Money Back Guarantee; New is 30 days, Reconditioned is 120 days.
Condition: New Factory Reconditioned
Features: Same Same
Specs: Same Same
Includes: Battery,
Engine Oil,
Maintenance Kit,
Instruction Sheets
Engine Oil,
Maintenance Kit,
Instruction Sheets
Availability: In Stock Out of Stock
Warranty: 2 Year Limited 1 Year Limited



For a period of two years from the date of original sale, Generac Power Systems, Inc. (Generac) warrants its GP Series generators will be free from defects in materials and workmanship for the items and period set forth below. Generac will, at its option, repair or replace any part which, upon examination, inspection and testing by Generac or a Generac Authorized Warranty Service Dealer, is found to be defective. Any equipment that the purchaser/owner claims to be defective must be returned to and examined by the nearest Generac Authorized Warranty Service Dealer.

All transportation costs under the warranty, including return to the factory, are to be borne and prepaid by the purchaser/owner. This warranty applies only to Generac GP Series portable generators and is not transferable from original purchaser. Save your proof-of-purchase receipt. If you do not provide proof of the initial purchase date, the manufacturer’s shipping date of the product will be used to determine the warranty period.


Consumer applications are warranted for two (2) years. Commercial and Rental applications are warranted for one (1) year or 1000 hours maximum, whichever comes first.



100% (one hundred percent) coverage on Labor and Part(s) listed (proof of purchase and maintenance is required):

  • Engine- All Components
  • Alternator- All Components


100% (one hundred percent) coverage on Labor and Part(s) listed (proof of purchase and maintenance is required):

  • Engine- All Components
  • Alternator- All Components


For the purpose of this warranty “consumer use” means personal residential household or recreational use by original purchaser. This warranty does not apply to units used for Prime Power in place of utility where utility power service is present or where utility power service does not normally exist. Once a generator has experienced commercial or rental use, it shall thereafter be considered a non-consumer use generator for the purpose of this warranty.

All warranty expense allowances are subject to the conditions defined in Generac’s Warranty Policies, Procedures and Flat Rate Manual.

  • Generac built portable generators built prior to May 2008.
  • Generac portable generators that utilize non-Generac replacement parts.
  • Costs of normal maintenance and adjustments.
  • Failures caused by any contaminated fuels, oils or lack of proper oil levels.
  • Repairs or diagnostics performed by individuals other than Guardian/Generac authorized dealers not authorized in writing by Generac Power Systems.
  • Failures due, but not limited, to normal wear and tear, accident, misuse, abuse, negligence or improper use. As with all mechanical devices, the Generac engines need periodic part(s) service and replacement to perform as designed. This warranty will not cover repair when normal use has exhausted the life of a part(s) or engine.
  • Failures caused by any external cause or act of God, such as collision, theft, vandalism, riot or wars, nuclear holocaust, fire, freezing, lightning, earth-quake, windstorm, hail, volcanic eruption, water or flood, tornado or hurricane.
  • Damage related to rodent and/or insect infestation.
  • Products that are modified or altered in a manner not authorized by Generac in writing.
  • Any incidental, consequential or indirect damages caused by defects in materials or workmanship, or any delay in repair or replacement of the defective part(s).
  • Failure due to misapplication.
  • Telephone, cellular phone, facsimile, internet access or other communication expenses.
  • Living or travel expenses of person(s) performing service, except as specifically included within the terms of a specific unit warranty period.
  • Expenses related to “customer instruction” or troubleshooting where no manufacturing defect is found.
  • Rental equipment used while warranty repairs are being performed.
  • Overnight freight or special shipping costs for replacement part(s).
  • Overtime, holiday or emergency labor.
  • Starting batteries, fuses, light bulbs and engine fluids.




Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.




Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you. This warranty gives you specific legal rights. You also have other rights from state to state.