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Customer reviews for GP8000E Watt Generator CO-Sense with Transfer Switch Outlet for Home Backup for
GP8000E Watt Generator CO-Sense with Transfer Switch Outlet for Home Backup
4.6 out of 5 stars
stars
617 ratings617 reviews
  1. 5 stars76% (470)
  2. 4 stars15% (93)
  3. 3 stars2% (14)
  4. 2 stars2% (10)
  5. 1 star5% (30)
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Showing 21-30 of 617 reviews
Oct 1, 2026
Reviewer name: Geo26
5 out of 5 stars
5 out of 5 stars review

This is my second portable generic generator, I still have the first one, it's about thirty years old. So far the new one works smoothly. I've had two power outages so far. It handled the work load great.

Review from generac.com
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Oct 1, 2026
Reviewer name: Gator
5 out of 5 stars
5 out of 5 stars review

Runs great from the start!

I purchased this prior to hurricane season. Of course I hope I dont have to use it, but if we lose power this should do the trick. Plenty of power to run my entire house. (without being stupid) It runs great so far. No problems.

Review from generac.com
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Oct 1, 2026
Reviewer name: rox54
3 out of 5 stars
3 out of 5 stars review

Finally have one that works

Once I got a working generator (had to return 2 of them til I got one that worked) it has been workable for me. I am getting a whole house generator so I don't have to mess with it.

Review from generac.com
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Jun 15, 2026
Reviewer name: Roger21
4 out of 5 stars
4 out of 5 stars review

Needs a load meter

during recent power outage, the generator work efficiently, running 9 hours on about half a tank of gasoline. However, lacking a load indicator, I had to closely monitor gas usage because I didn't know how much load was being carried so I couldn't know how long the tank of gas would last (based on the literature noting the tank of gas would last approximately 9 hours at half load) This is a great machine, but without a load meter it must be monitored nearly constantly lest it run out of gas...

Review from generac.com
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Aug 31, 2026
Reviewer name: Nickname351758
5 out of 5 stars
5 out of 5 stars review

Tri fuel

I bought this generator recently to be used to back up the electric power in my home during power outages. I have not had a chance to use it yet but have tested this generator and it works quite well.

Review from generac.com
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Sep 3, 2026
Reviewer name: Rayj
5 out of 5 stars
5 out of 5 stars review

Great product

I bought this last month after a second round of thunderstorms. I starter up fine, and ready for the next power outage. Just would be quiter while running.

Review from generac.com
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Nov 24, 2024
Reviewer name: BMUR
5 out of 5 stars
5 out of 5 stars review

Super impressed

Was part of the "Bomb Cyclone" that hit the PNW on 11/19/24 and lost all power. After two days, we decided to invest in a generator knowing that this could happen again. The set-up was easy, the controls were well labeled, the starting process was explained with help from stickers located above the fuel line and choke lever (but make sure to read the manual first). The unit started with ease and ran for 4 days straight as we were out 6 days total. I was able to plug in the chest freezer, mini fridge, floor heater, lights, cable with TV, recliners, computer, and was also able to charge phones and flashlight batteries. This is my first generator ever and now wondering why we didn't purchase sooner. Would have made those first two days way more tolerabe! As a suggestion, even though the unit comes with a 20' heavy duty cord with 3-plug-in capabilities, I stronly suggest having a 50' or 100' equivalent heavy gauge (12g minimum suggested) to run from the unit into the house. If there was one thing I would try and change, it would be the noise output which I know accompanies all generators and just something you and the neighbors will have to deal with unless you devise something that dappens the noise without hindering the exhaust in any way. Overall, I'm super impressed and would recommend to family and friends without hesitation.

Review from generac.com
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Jul 6, 2025
Reviewer name: Jarrod
1 out of 5 stars
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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Nov 24, 2025
Reviewer name: Speedracer1559
4 out of 5 stars
4 out of 5 stars review

Great features.

I bought this one, it served me well during these power outages they have here in Tennessee. Powered my fridge, two bedrooms ( t/v's and boxes), electric fire places. Filled it up at night, it would run all night. (8+ hours). It served me well. I have the whole house one now.

Review from generac.com
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May 17, 2025
Reviewer name: Alex
1 out of 5 stars
1 out of 5 stars review

Bad Bad Bad

F...ing garbage. Do not buy. Runs rough if it starts. Worst generator I've ever had. I would say used but can't hardly use it. Bought new. Was garbage right out of the box. Should have returned. Spen up and get a Honda. This thing is junk

Review from generac.com
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