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Customer reviews for Generac GP6500 6,500W/8,125W Generator + CO-Sense for
Generac GP6500 6,500W/8,125W Generator + CO-Sense
4.6 out of 5 stars
stars1,734 ratings1,731 reviews
  1. 5 stars78% (1,356)
  2. 4 stars15% (260)
  3. 3 stars2% (41)
  4. 2 stars1% (19)
  5. 1 star3% (58)

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Showing 141-150 of 1,731 reviews
Jan 29, 2026
lenny
5 out of 5 stars review

great generator

I bought this a month ago and a week later lost power for hours. started right up and was perfectly able to run most of the house

Review from generac.com
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May 21, 2025
amandah798_8098
5 out of 5 stars review

Generator

[This review was collected as part of a promotion.] Generic power systems portable generator. This generator came in handy. We used it for the bounce house we had a party. It worked amazing. The noise was a little loud but to bad.

Review from influenster.com
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Jan 28, 2026
Larry A
4 out of 5 stars review

Will run the whole house.

Bought generator on Amazon black Tuesday. Still breaking it in. Electrician said it was a good product. Starts easy with on or two pulls . Hope I never have to use it to run the house but if bad weather sets in I will be ok.

Review from generac.com
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Jan 21, 2026
tyianag_6545
5 out of 5 stars review

Super handy

[This review was collected as part of a promotion.] Super durable and handy. We have a winter storm coming and I feel totally prepared because we have this thing! It is super heavy and we keep it in the garage.

Review from influenster.com
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Dec 6, 2024
Will
1 out of 5 stars review

Not satisfied

40 hours and it quit working. Will not start. Died after about 3 hours running last time. Tried everything etc suggested.

Review from generac.com
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Jun 11, 2025
Jefff
3 out of 5 stars review

Stripped oil dipstick

Brand new, unscrewed the oil dipstick to add oil, and found out the threads were stripped. Immediately ordered and had to pay for a new one.

Review from generac.com
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Jul 14, 2025
Genny
5 out of 5 stars review

Gen replacement

The first one had a bad LP regulator. Home Depot was great at getting it swapped. The replacement ran like a champ.

Review from generac.com
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Nov 26, 2025
JackManOfGod
1 out of 5 stars review

Home / company owner

Terrible motor blew in less than 2 months! Warranty voided terrible generator even worse the fake warranty! Complete disappointing experience 😪

Review from generac.com
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Apr 20, 2025
Dallas in Pa
5 out of 5 stars review

I am very pleased with my portable Generac. It has no problem running my furnace, 2 refrigerators, a big freezer, and my lights, all at the same time. Great product !!

Review from generac.com
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Apr 18, 2025
DOCnewton
2 out of 5 stars review

Not impressed

BOUGHT LAST FALL 2024, I HAVE HAD SEVERAL ISSUES WITH UNIT FLOODING OUT AND SUNCE IT IS A FUEL INJECTION THIS SHOULD BE HAPPENING, UNIT DOESNT START QUICKLY AND THEN IT STOPS AND WANT START BACK VERY DISSATISFIED

Review from generac.com
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