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Customer reviews for 10,000/8,000- Watt Generac Gas-Powered Portable Generator With CO Sensor + Electric Start / 25ft Extension Cord for
10,000/8,000- Watt Generac Gas-Powered Portable Generator With CO Sensor + Electric Start / 25ft Extension Cord
4.6 out of 5 stars
stars
1,841 ratings1,783 reviews
  1. 5 stars78% (1,441)
  2. 4 stars14% (264)
  3. 3 stars3% (47)
  4. 2 stars1% (23)
  5. 1 star4% (66)
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Showing 831-840 of 1,783 reviews
Mar 25, 2017
Stephano
5 out of 5 stars
5 out of 5 stars review

Done

Generac has been around four years. I have used them in the past and will continue to use them in the future. The unit is fairly heavy which makes it hard to move around but you have so much in that account back please I can understand why it's so heavy. my unit fires up real fast and runs a long time and one tank of fuel.

Review from generac.com
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Oct 11, 2018
Adam12hicks
5 out of 5 stars
5 out of 5 stars review

Excellent generator. First time owner, couldn’t have been easier!

[This review was collected as part of a promotion.] I haven’t used a modern generator before - last one we had was 25 years old, was noisy, shaky, and we’d wear ourselves out getting it to start. Oh, and then there was the exhaust, smoke and low current. Not anymore! This thing is a dream. Arrived well packaged and was a breeze to set up. Basically you attach the wheels, front rests and handle and it’s ready to go. Well you add oil (included, along with a handy funnel) From there, startup instructions are well documented in the book AND on the generator itself. I really appreciate that there are easy to follow graphical steps on the unit itself for starting and running the unit. A few quick pulls and it was purring like a kitten. I haven’t had a chance to put too much load on it, but so far it’s easily powered everything I’ve thrown at it! The unit is heavy, feels like everything is high quality, and I expect it to last a long time. Definitely recommend!

Review from generac.com
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Apr 18, 2025
Hurricane Paul
4 out of 5 stars
4 out of 5 stars review

I bought this during hurricane season since my other generator did not put out power anymore,it started great but shut down 15 min. later, I can restart it, but it kept shutting off every few minutes. The CO2 sensor is just too sensitive. You can’t have it near anything pretty much out in the open. It’s kinda hard when it’s raining and you can’t even run it under a tarp other than that, I guess it’s a good machine. Hopefully it will start up for me next Hurricane season, I would give it a five star if there is a way to disconnect that CO2 sensor and not void warranty

Review from generac.com
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Apr 18, 2025
Jason R1
5 out of 5 stars
5 out of 5 stars review

Awesome generator!!!

I bought 2 of these after Hurricane Helene. One for me and one for my mom. My moms house used theirs and was plenty of power to run almost everything except the HVAC. Assembly was straight forward and started right up. Only used it for about 10hrs before her power came back. She was out for a total of 6 days. I never started mine because my power came back while I was picking them up lol.

Review from generac.com
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Apr 6, 2020
GSH
3 out of 5 stars
3 out of 5 stars review

A few disappointments with the 17500W generator purchase

I have not started the generator yet but in getting it ready I've identified a few disappointing aspects. First and probably the biggest disappointment is the requirement to measure valve clearance at every 50 hour interval. The owners manual informs you this is pretty complicated (without describing the procedure) and suggests you have a qualified dealer do it (...did I mention the requirement for every 50 hours of operation?). The generator came with a note indicating the unit is "shipped without oil" and they supply 2 quarts for the required 1.7 quart capacity. When I poured the first quart in, the oil level was well above full on the dipstick ….indicating the engine was not even close to empty of oil. I also found the assembly instructions to be near non-existent because the exploded view of the assembly was so small in the users manual; also - it did not reference torques for any bolts or wear lock washers vs. nylon nuts should be used. I also noted two wires stretched very tight across the oil filter - which needed to be disconnected and re-connected following a less stressful path. I truly hope the generator will work well despite these initial findings.

Review from generac.com
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Sep 25, 2018
Nanny
5 out of 5 stars
5 out of 5 stars review

Wow

[This review was collected as part of a promotion.] I received this generac generator to review, wow is all I can say, my husband put it together and it's a beauty , tryed it out works like it should and more love the look of it, will definitely be using this product, love it, go buy one!!

Review from generac.com
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Mar 16, 2024
LB
1 out of 5 stars
1 out of 5 stars review

Unreliable Generator

Owned it 2 years. Refused to start on one of regular start up dates. Took to small engine repair. He got it started after changing spark plugs. Got it home and battery was dead. Refuses to start. Can't count on it when we have a power outage. Waste of money. Now having to look at getting a Honda.

Review from generac.com
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Apr 1, 2021
jhrubos
4 out of 5 stars
4 out of 5 stars review

Beast

this machine is a beast! it is heavy and powerful and should provide the essential back up power my home needs. The manual for the initial set up was small in size which was a shame as a big machine should equal a big picture. the generator is on wheels but is not easy to move as it is soooo heavy. it also would have been nice if generac offered a custom cover for the machine as well.

Review from generac.com
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May 6, 2023
Fred
5 out of 5 stars
5 out of 5 stars review

Replacement

I had a coleman powermate 6250w ran great. I hope this generator does as good or better than the coleman. The Generac is more powerful and more quite. The design is better and came with wheel ,handle kit, electric start, oil, 20A cord, and funnel. I'm impressed with the ease of functioning especially starting. The pull start is easy enough my wife started it only using one hand. The electric start works great as well the with just a push of button. I plan to use this generator to power my home in power outage. The coleman could not handle but small amount and wouldn't satisfy my wife. She wants hot bath and we have electric water heater and wants to cook on electric stove plus watch TV. I done lots of research and couldn't find another generator like generac. The new appliances are sensitive to THD level and generac is less than five percent. Generac noise level is low also has three year residential warranty. Where live in a rural area we have power outages a lot all times of the year. Winter time we have been without electric for two weeks solid snow and ice storm and bitter cold

Review from generac.com
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May 26, 2021
Dan
5 out of 5 stars
5 out of 5 stars review

Great unit but...

10 year old unit so take this with a grain of salt. This is a great unit and meets all our needs. But it does have one, I'll call it a design flaw. The fuel pump has a ground wire that needs to make good contact with the motor. The end that attaches to the motor is copper or brass and tends to corrode and break contact. Cost me a $100 to have a repair man come out and buff it with sandpaper. Hope they have corrected this.

Review from generac.com
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