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
Open Box
New 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

Free Freight Shipping »
(continental U.S.)

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.

Out of Stock
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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
CARB Compliant: No
Case Included: 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
No. of Outlets: 9
Outlet Type(s): (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
Powered Tool Power Source: Gas
Run Time (50% Load): 10 Hours
Starter Type: Electric/Recoil
Voltage: 120V/240V
Voltage Regulation: Automatic
Wattage (Max.): 26250
Wattage (Rated): 17500
Wheel Size: 12 in
Wheel Type: Pneumatic



4.9 / 5.0
67 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Yes, I would recommend this to a friend (7)
Powerful (7)
Heavy (1)
Great generator
This is my first generator, but we moved to a rural area where the power goes out regularly so we needed an backup generator. I was thrilled to be able to find a portable generator this size, because we can't afford a standby generator.

I was so impressed with this generator when it arrived. It was so easy to set up and came with an extra air filter, oil filter, and so on. Very nice tough.

I feel much better know we'll have heat and water if we lose power this winter!
October 30, 2017
Originally posted at
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
I would change nothing about this system
I bought this system to replace a 5000watt coleman unit. The coleman treated me well but this guy is incredible. I should should have purchase this a long time ago. It got our farm through 3 days without power in comfort. no having to remember what pump or appliance is connected. It does like gasoline so make sure you have plenty.
September 18, 2017
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
Great Product
I am very happy with my purchase of the GP17500G generator. I feel that if a hurricane hits the Gulf coast my family will be comfortable in our home, with all the comforts. And I am very happy that it is made in the USA.
August 14, 2017
Originally posted at
Association said no Propane
I checked with my HOA, they said no to Propane back up. So after researching what my needs were and knowing the quality of Generac. I purchased a GP17500 after talking with a Generac consultant I knew this would run my whole house. Live in Florida known for Hurricanes,I am worry free in the event power goes down.
July 20, 2017
Originally posted at
I have had this generator since February 2017, the peace of mind is priceless. I did look tirelessly and this model was the best value. It easily handles our home ( 4200 sq ft) multiple refrigerators and 2 central air units. I did have the electrician wire the house for takeover, much easier given the winters in New England. Easy install, unpack and setup, by myself. Best of all made in the USA, great network of service centers here as well. If you, like me are looking for an alternative portable power source, this is it
May 23, 2017
Originally posted at
Very nicely engineered machine
Very nicely engineered machine. This is my second Generac generator and I am very pleased again.
March 8, 2017
Originally posted at
Great value for price
Great value for the price and size of this unit, starts and runs easily ample amperage to run most any residential need
December 23, 2015
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

Questions & Answers

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Browse 8 questions Browse 8 questions and 8 answers
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.
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.
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.

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: Out of Stock Out of Stock
Warranty: 2 Year 1 Year



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.