Join Now
Skip to Main Content
Sam's Club
Sam's Club
All Departments
All Services
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)

Member photos

  • +110 images
Sort by |
Showing 41-50 of 1,729 reviews
Jun 2, 2017
Reviewer name: YumaAlan
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Solid Generator

Third generator I have tried, this one is a winner....hold 5th wheel and enough for all my power tools for construction project on land without electric. Always starts like a champ..runs really quiet with good run time....only thing I would like to see is an adapter to permit larger gas tank for longer run time..........

Review from generac.com
Helpful?698EZRGTDSV513631905214
Nov 6, 2025
Reviewer name: losag_864
5 out of 5 stars
5 out of 5 stars review

Great for moms when the husband is working the roa

[This review was collected as part of a promotion.] We absolutely love this Generac. Assembly took 20 minutes mostly because yes it is heavy. However, the wheels and handle are handier than a shirt pocket and make it so easy to move! I give 8/10 on noise level its standard for a generator and not super noisy! Plenty of plug ins you could plug in a house or camper! Best part its easy to start so I can do this without my husband being home when those winter storms hit!

Review from influenster.com
Helpful?698EZRGTDSV513631905214
Nov 10, 2025
Reviewer name: glacyt_394
5 out of 5 stars
5 out of 5 stars review

Recommend

[This review was collected as part of a promotion.] This generator has been an absolute game-changer for our family. We used for cooking during camping trips , also at our house since we have some powers outrages lately. My husband was so excited when he found out it's propane-powered - no need to lug around extra gas cans. Setting up was easy enough and is also light to carry and not super loudly. We definitely recommend and the price is another great point.

Review from influenster.com
Helpful?698EZRGTDSV513631905214
Nov 22, 2025
Reviewer name: hammadi_8781
5 out of 5 stars
5 out of 5 stars review

Great generator

[This review was collected as part of a promotion.] I recently got this Generac Power Systems GP5500 Single Fuel 50 ST generator and am very pleased with it so far. It is very easy to operate, especially with turning it on. It provides very reliable power throughout the time that I had it on. It also is easy to store as it's not too big.

Review from influenster.com
Helpful?698EZRGTDSV513631905214
Dec 8, 2025
Reviewer name: leliap_1846
5 out of 5 stars
5 out of 5 stars review

Best essential generator for living in the south

[This review was collected as part of a promotion.] This is honestly the best generator out there. It has all the essential features that a generator need, i live in the south so losing electric during the hurricane seasons is nothing new. The size is decent for an essential generator, not to mention its outstanding performance that help my refrigerator, can charge my electric car, microwave during the time of losing power. The design feature is phenomenal for its safety features. I highly recommend getting one.

  • +1 image
Review from influenster.com
Helpful?698EZRGTDSV513631905214
Dec 9, 2025
Reviewer name: connoisseurofsorts_1640
5 out of 5 stars
5 out of 5 stars review

Better safe than sorry!

[This review was collected as part of a promotion.] This generac generator is perfect for our needs and I'm glad we have it! Fortunately, we have not had to run it for an extended period of time since receiving; however, test runs have been successful and it seems like it will work efficiently and as expected for when we need it to run for hours. The generator came on a pallet and was packaged well. It is HEAVY without the wheels and handles. About 170 lbs I believe. So you'll want at least two people to lift (or just rip the box open like I did). Instructions are clear and assembly was pretty quick - about 20 minutes or so. It's definitely easier to assemble if you have more than one person. Once the handles and wheels are attached, it is easy to move around. While I'd recommend moving it with both hands, I was able to push it with one arm and record with the other and I'm not that strong. The generator itself feels very heavy duty and high quality. It seems like it'll last a long time. It's easy to start up and not excessively loud (it's a generator after all, so there is some sound to it running). I like that the wheels don't need air so they won't go flat. I also like that there are several outlets with attached outlet covers for protection. Lastly, as someone who is very anxious I greatly appreciate that this generator has onboard carbon monoxide monitoring. Overall, I'm incredibly satisfied with this generator and I'm happy we're prepared for the future!

Review from influenster.com
Helpful?698EZRGTDSV513631905214
Oct 7, 2017
Reviewer name: Harry1
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

This is a good product, I hope it last for years!

It runs good and the hurricane is over and I will store it until the next one hits and some poor people need power and I will hook it up for them as I did this time. Hope it works the. As a retired Millwright I have stored it with all precautions needed to use it then.

Review from generac.com
Helpful?698EZRGTDSV513631905214
Jan 29, 2026
Reviewer name: chrisfromct
5 out of 5 stars
5 out of 5 stars review

Overall, very good quality and features.

Just bought this a month ago and haven't had the need to use it yet. But I did have to assemble the handle, wheels, add oil and gas and start it. My review is solely based on that. The wheels were relatively easy to assemble, keeping in mind that the machine is heavy and you will need to lift it on blocks, or use a helper. They give you a perfectly shaped funnel to add the oil. Don't lose it. The handles are easy to install and conveniently fold down when not in use. They make it very easy to roll around on the two wheels. You also need to connect the battery wires, which they don't explain very well. Remember Red is positive, Black is negative. My only gripe is with the gas tank cover, though. It is very large, and very low profile, and it is in a sunken area of the tank. It is very difficult to get a grip on it to remove as it is also very tight. Why did they make it like this? I've never had any machine have a cap like this. It does have a convenient fuel level bubble. The gas tank is 8 gallons, not just 5 like my older model. It is rated at a continues 8KW, although the 240V 4-prong cable that connects to the breaker panel is only capable of carrying 7.2KW. You need to use the 2 120V outlets to get a total of 8KW. Keep in mind that the battery does not get recharged by running the engine. You have to use the included wall charger. Although, a single start is not going to use much power, so you don't need to worry too much about always keeping the wall charger connected. But definitely charge it fully when it is new. It has picture-based instructions on the frame. But they aren't very useful as they pictures are too small to figure out what they are saying. Remember to turn the fuel shutoff to ON and set the choke to ON when starting it.

Review from generac.com
Helpful?698EZRGTDSV513631905214
Dec 29, 2025
Reviewer name: Lambo
4 out of 5 stars
4 out of 5 stars review

after purchasing a different brand and having problems right out of the box with both products I bought this generac portable generator with a generic transfer switch and having it installed by a licensed electrician and approved by my local county all systems are go fortunately have not needed to use it this winter yet but I've had a generac in the past that served me very well

Review from generac.com
Helpful?698EZRGTDSV513631905214
Jun 2, 2017
Reviewer name: Hereibee
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Overall a very good product.

This generator performs very well. I really like the fact that the 240 volt plug has a real circuit breaker rather than the pop out type. Makes a big difference in hot weather. The only thing I don't like is that it does not charge the battery when running. After multiple starts you have to charge it with a charger.

Review from generac.com
Helpful?698EZRGTDSV513631905214