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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
589 ratings589 reviews
  1. 5 stars77% (454)
  2. 4 stars15% (87)
  3. 3 stars2% (12)
  4. 2 stars2% (10)
  5. 1 star4% (26)
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Showing 241-250 of 589 reviews
Jan 2, 2012
Reviewer name: Beckis
5 out of 5 stars
5 out of 5 stars review

Powers almost whole house!

I researched a host of generators before deciding on the Generac GP6500. For me the Generac brand was the deciding factor and the GP6500 was the largest wattage I could fit into my budget. It was shipped promptly and arrived without so much as a scratch on the box. Assembly was quick and easy. Had a transfer switch(6 breaker) installed and everything in the house is usable except central air and washer and dryer. The generator started up on second pull and roared like a lion but powered everything I wanted it to power with room for more. I couldn't be happier. Almost looking forward to the next power outtage because I am ready for it now. I have not seen anything on this generator that is not well built and ready to last for a long time.

Review from generac.com
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Sep 12, 2020
Reviewer name: Lee
5 out of 5 stars
5 out of 5 stars review

Runs when you need it!!

Bought this to replace an older one I gave to my son, ran like a champ for years. The new one was purchased because of the Deracho that went through our area Benton Co. Iowa, August 10, 2020. Finally found one 75 miles away in Cedar Falls. First oil change 41hrs, second change at 109 hrs. The unit ran continuous for 187 hrs. straight! One pull start every time. The unit ran our 28,00 sq. ft. home, AC, frig, freezer, lights etc. Excellent piece of equipment and reliable! Never been happier. Thanks, Lee

Review from generac.com
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May 4, 2025
Reviewer name: courtneyb391_8400
5 out of 5 stars
5 out of 5 stars review

One of the best Generators out there!

[This review was collected as part of a promotion.] This portable generator by Generac is exactly what you need for camping, power outages, or basically whatever diy project. It's tri fuel which makes it convenient and it's not very loud so it won't disturb your neighbors!

Review from generac.com
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Mar 9, 2013
Reviewer name: TheRev
5 out of 5 stars
5 out of 5 stars review

Great Generator

Purchased the gp6500 after a lot of research. It offered the best power for the price. We only had to use it for a little over 1 hour for the first 7 months we owned it. We have been faithful in starting it about every other week or so and ran it with a load for about 20 minutes. We have kept the tank full of gas treated with stabilizer. Well sure enough we lost power this week do to freak March snowstorm. Started on the second pull. It ran over the course of three days for 29 hours. Worked flawlessly. Really a lifesaver, especially with three kids and the wife. Ran 3/4 of the entire house including a well pump, two refrigerators and a deep freezer. We have a Woodstove in the basement so no need for it to run a heat source. Bottom line... Awesome product, great value and so far seems durable. If you're debating this generator, go for it!!!!

Review from generac.com
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Jul 28, 2014
Reviewer name: Chuck57
5 out of 5 stars
5 out of 5 stars review

Works great right out of the box

I was amazed on easy everything was and how well it was all explained. Setup took less than 10 minutes and you just have to fill with the oil supplied and fill with gas. Getting the gas took the longest time of the whole setup process. Started on the first pull and ran like a champ. It runs quiet and and with very little vibration. I purchased this unit because I am sick out power outages and this is the best investment made for that problem. It will run everything that is needed when your power goes out, to get you by without damage to your home or your pocketbook. Best Investment I ever made, don't know what took me so long to get one!

Review from generac.com
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Jan 1, 2014
Reviewer name: MiWoodguy
5 out of 5 stars
5 out of 5 stars review

Generac 6500

I had previously owned a Generac 6500 and needed another unit due to the worst ice storm to hit in decades. I found a unit 3 hours away. It was worth the trip. I cut open the box, added the oil, handle and wheels. Put gas in the tank, and it fired up on the first pull. Quality I knew I could trust. It was worth the trip to bypass the lesser known brands.

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Jun 6, 2013
Reviewer name: Mike
5 out of 5 stars
5 out of 5 stars review

Easy Setup, Well Built, Runs Great

I picked up the GP 6500E generator today. All parts were present and the assembly was easy. The unit started right up with the electric start. The generator appears to be well built and has good operating directions. It ran my power tools without a blip. The wheels and pull handle makes moving the generator on the ground easy but it isn't lightweight. It takes two people to lift it into a pickup. A separate battery charger is included as the electric start battery is not directly charged from the generator. I'm impressed so far and look forward to many years of usage.

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Jul 28, 2012
Reviewer name: Typical homeowner
5 out of 5 stars
5 out of 5 stars review

Worry free, two pulls and its on, plenty of power for all my needs

I bought this generator because of the Oct storm. We were out for four days (not again if I can help it). I had a transfer switch installed. I have two heaters (gas), refrigerator. hot water heater (gas) kitchen lights, dinette lights, bathroom lights, hallway lights and family room outlets hooked up to the transfer switch. No problem with all of it on at the same time. I run a line to the garage refrigerator. In the evening, I ran a line from my washer/dryer to the family room outlets. Again there was no problem. The generator is outside. I closed the garage door and the door to my house (there is no discernible noise from the generator) and after a while I forget I'm on generator power. It takes forever for this generator to run out of gasoline. I rated it five stars because (so far) there is nothing this generator has a problem carrying.

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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

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Jan 25, 2013
Reviewer name: Doc
5 out of 5 stars
5 out of 5 stars review

The Little Generator that Could

During Hurricane Sandy we were without Power for 13 days. My friend got power back in five days so he lent me his Generac GP 6500 and it powered my four bedroom house for 8 days without a problem running about 20 hours a day. So I went out and bought one for myself. My neighbors with bigger generators were very impressed with my little generator that could.

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