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Customer reviews for Generac 8917 GP18000EFI 18,000-Watt Gas-Powered Electric-Start Portable Generator for
Generac 8917 GP18000EFI 18,000-Watt Gas-Powered Electric-Start Portable Generator
4.6 out of 5 stars
stars
1,729 ratings1,729 reviews
  1. 5 stars78% (1,354)
  2. 4 stars15% (253)
  3. 3 stars2% (41)
  4. 2 stars1% (20)
  5. 1 star4% (61)

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Showing 151-160 of 1,729 reviews
Oct 11, 2019
Reviewer name: Jeff
5 out of 5 stars
5 out of 5 stars review

Tbis product is expected to meet our needs during a storm caused power outage!

The.instructions for assembly were easy to follow. The instructions were straight forward with all parts included. The generator started on the second pull and worked flawlessly. I feel confident the generator will help keep my family comfortable during an extended power outrage. Having the generator and being able to connect it to the house is very convenient.

Review from generac.com
Helpful?698EZRGTDSV513631905214
Dec 8, 2016
Reviewer name: DakotaWinter
4 out of 5 stars
4 out of 5 stars review

Seems to be well built. Could use a volt meter.

This is a fresh purchase so have not had a chance to operate it as of yet. Looks to be a well built machine and am hoping for a good experience owning it. My main concern is that I can plug it into my double throw auxiliary power and feed power to multiple buildings. The neutral bonding should allow for this. My past gen. Had neutral bonded to fram and would not function this way without throwing the breaker on the gen.

Review from generac.com
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Mar 2, 2013
Reviewer name: Curly376
5 out of 5 stars
5 out of 5 stars review

Excellent value for the money

This new unit is replacing a 9 KW portable unit that ran my whole house except for the Hot Tub and central AC. The new Generac runs the whole house with power left over. I just wish that it would come with a voltmeter. It was easy to assemble and runs great.

Review from generac.com
Helpful?698EZRGTDSV513631905214
Nov 3, 2014
Reviewer name: Dave
5 out of 5 stars
5 out of 5 stars review

Great power without breaking the bank

I had researched several brands and models of generators and this 7500W model topped the list each time. Bought it to run tools for home renovation jobs and backup if power was ever lost at home. Does everything I need it to do! Great power for the price! Only downside is noise. This is supposedly noisier than most in its class. This is not an issue for me, but if it was regularly used go home backup, I'd consider a quieter one for running throughout the night.

Review from generac.com
Helpful?698EZRGTDSV513631905214
Dec 17, 2012
Reviewer name: Old silver rex
5 out of 5 stars
5 out of 5 stars review

Great performance, easy to use

Bought GP15000E after extensive research. Because of demand, it took almost four weeks to receive it and Generac transfer switch. Worth the wait. Both were reasonably easy to set up. I store the generator inside garage, but suggestions for shelter when it is being used outside would be appreciated. There are some slight differences in operating instructions between the generator and transfer switch manuals.

Review from generac.com
Helpful?698EZRGTDSV513631905214
Sep 22, 2017
Reviewer name: TCM
5 out of 5 stars
5 out of 5 stars review

Purchased in 2014

I live in North Georgia, we have ice storms and snow storms and tornadoes, even tropical storms that knock out our power from time to time. My house was prewired for a generator and has a transfer box. This unit was pretty much a plug and play situation. It easily runs the heart of the house more then adequately. For the last 3 years we have had to use it for every year for anywhere from 4_days to 2 weeks and we ran it 24/7. Other then changing the oil and replacing the starter battery, its been maintenance free. I heartily recommend this unit to anyone that needs a generator.

Review from generac.com
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Jan 31, 2014
Reviewer name: luckykay
5 out of 5 stars
5 out of 5 stars review

Fantastic unit and very easy for older folks to operate.

I have a pull start which neither I or my wife can start. We always have to call our son to get it started. I decided to look for an electric start unit after looking at many different units and reading reviews, we got the Generac GP75002E. All I can say is, it's a great unit with all the power we'll ever need and at a fare price. Don't have to wait for others to get here anymore whenever we have a power outage. I would recommend the Generac units to anyone.

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May 15, 2012
Reviewer name: twatkinson
4 out of 5 stars
4 out of 5 stars review

Plenty of power and love the electric start.

Very easy to setup, had the house on backup within minutes of receiving the unit and it runs everything we need with power to spare. 10 circuits including fridge/freezer. well pump, boiler, lights, , microwave, kettle, toaster, home theater and office...!

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Mar 26, 2021
Reviewer name: Will
3 out of 5 stars
3 out of 5 stars review

GP15000 Surges

I've had this generator a while, it has always surged when a load was applied. I have a factory service manual.Generac would not let me speak to a tech to further diagnose it, they tell me I have to take it to a service shop. I am afraid the shop will throw parts at it until it is fixed, assuming they do not replace everything.

Review from generac.com
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Apr 18, 2025
Reviewer name: DirtCop
4 out of 5 stars
4 out of 5 stars review

Great alternative to bigger generators

A lot of features for the money! This unit delivers emergency power for our whole house, except for the oven and dryer. With it, freeers and refrigerators have enough amps to start their compressors, something smaller generators do not! Also, It has overheating shutdown, which is a great reliability feature. The only problem we’ve had so far is with the battery start. the terminals on the battery come loose way to easily. An inexpensive alternative to the permanent generators, which can easily run over $10000 installed.It is sad that we have a need for this technology, when our parents had cheap reliable energy. And it all could of been avoided.

Review from generac.com
Helpful?698EZRGTDSV513631905214