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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
stars1,696 ratings1,696 reviews
  1. 5 stars79% (1,332)
  2. 4 stars14% (245)
  3. 3 stars2% (40)
  4. 2 stars1% (20)
  5. 1 star3% (59)

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Showing 41-50 of 1,696 reviews
Sep 10, 2025
JH25
1 out of 5 stars review

Terrible services for defective products

Unit was defected. No output power. None of authorized shop recommend can fix it. Could not refund to due to crazy FleetFarm policy. Running around for 2 weeks trying to get it fix. Loss $20 to drain gas not cover by warranty. Terrible experience. Don't recommend it.

Review from generac.com
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Jun 12, 2025
dkupnorth
5 out of 5 stars review

Portable replacement for a standby

No major loads put on it yet, but so far so good on this generator. Starts easy, not too loud. Nice that it came with a start up kit, wheels, and a handle which seems to be extras on other brands. Idle control when running with no load would be nice, but it wasn't a deal killer. I like the steel fuel tank and the quality of the fuel shot off valve. Went with the portable unit with manual transfer switch when the old standby failed. Will be nice to have it in the garage, out the elements, ready to go when when needed.

Review from generac.com
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Jul 15, 2025
EastLansingMI
5 out of 5 stars review

Purchased in the Nick-Of-Time !

I worked hard to find a full service dealer and settled on FD-Hayes, Lansing MI and was extremely pleased with their recommendations for this unit, installation and training. I had this installed on a Monday and literally that Thursday we lost power for 4 days and this unit performed admirably. The safety-switch mechanism on the breaker box was foolproof and the electric start was a real help. I ran it about 24 hours on a single tank of gas, it saved my frozen foods and kept my fridges at temp. I didnt use AC and that is not really a problem as I knew going in that AC would not be viable with this unit.

Review from generac.com
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Jul 6, 2025
Jarrod
1 out of 5 stars review

Save your money

What a waste of money. Worked great for the first month, now it won't stay running for more than 20 minutes at a time. Any time you put a load on it, it dies. This seems to be especially true if you have to use it on hot days. (Which when you're using it on an RV is when you need it the most).

Review from generac.com
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Jun 11, 2025
No name
1 out of 5 stars review

Not impressed

We bought a Generac brand new & it didn’t work straight out of the box. We’ve had 2 service calls & they still can’t figure it out. We’re waiting on another part. Parts take forever to get & then you have to call & chevk bc they don’t call you. Not happy at all!

Review from generac.com
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Jul 17, 2025
172pilot
4 out of 5 stars review

Great Unit

I purchased about a month ago. Generator arrived in good condition, and unpacking and getting ready to use was well instructed, but a bit more time consuming than I had thought it would be. Only "semi-complaint" is the unit is very loud. It would get a five star from me if the muffler system made the unit a bit more quiet.

Review from generac.com
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Sep 10, 2025
VKA2
1 out of 5 stars review

Poor Warranty Assistance

Purchased this portable generator, had a problem with it after 15 min. of running.. Called for assistance and No One would come to my house to repair it. They only would come if it was a standby generator. I like Generac Products but my was 450 pounds and I could not service it myself. Plus it was under warranty.

Review from generac.com
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Sep 16, 2025
DDDD5555
3 out of 5 stars review

Works fine, but super-loud

In reality, I only used this for about 20 minutes when the power came back on. This replaces a very old generator that had half the power. Aside from it working well, I can certainly say this generator is deafeningly-loud. Keeping it outside means you typically won't be bothered by it, but it makes you wonder if they could have improved the muffler.

Review from generac.com
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Jul 28, 2025
princsskik_5636
5 out of 5 stars review

An upgrade

[This review was collected as part of a promotion.] This generator is fantastic in quality, as one would expect from the leaders in generators. We live in Florida and store insulin along with medical equipment that has to be charged regularly so this is a must for power outages. I hated not knowing if we'd have enough gas to last us, but having three fuel sources relieves my mind. Our house has natural gas already, and we regularly have multiple LP tanks, so it's nice not having to worry about gas fumes from storing gasoline or trying to find gas during storm prep unless we want to. It's a bit large for traveling with it, but this would be an awesome unit for camping if you need a lot of plug-ins powered up and have a truck bed to load it on. The unit itself is easy to start, and easy enough to wheel around short distances. It has multiple outlets to connect into, and a panel to show how long it's running. It's really simple to use, although we have solar on our house so we can't connect into the main panel without some extra costs, so extension cords are the maximum of our experience so far. The unit is quieter than our previous model despite it being larger.

Review from influenster.com
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Jun 19, 2025
gavean_4975
5 out of 5 stars review

Great!!

[This review was collected as part of a promotion.] Compact, reliable power. This GP9500E from Generac has a small footprint, yet packs some serious power. This is capable of running on gasoline, LP (propane) or natural gas. Rated at 12500 starting watts and 9500 running watts when running on gasoline. The 500cc OHV (over head valve) engine features electric start with the included battery, as well as the old school pull start just in case the battery or something fails. It holds 7.5 gallons of gasoline and will run 9.5 hours at 50%. There is an included 4 foot long LP adapter hose and a 20lb tank will run 4.5 hours under the same conditions. Propane will lower the output slightly at 11250 starting and 8550 running watts. If you run natural gas it lowers it to 9000 and 7000. The included handle and wheel kit makes it super easy to move it around when needed and the handle folds down to store neatly. There are many great features built in, such as covered outlets for added protection when being used in the elements, CO sense technology that will shut the machine down if CO levels get too high and a low oil l cel shutdown that will stop the engine if it detects low oil to save the engine from damage. It is also compatible with HomeLink manual transfer switch kit to help power your home in the event of a power outage. This is especially helpful at our house as we have a well and when the power goes out, there is no water. So this adds peace of mind in those situations. Setup was simple with the included directions, which are also printed on the top flap of the box. Everything you need aside from a couple of very basic tools is included as well. The front panel contains an hour meter to keep track of how much use the machine has had. When running this is on the quiet side for a machine of this size. I am extremely pleased with this generator. From the ease of setup to the ease of use this generator is awesome.

Review from influenster.com
Helpful?698EZRGTDSV513631905214