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Customer reviews for 11000/8500-Watt Genmax Tri Fuel Portable Inverter With Co Sensor + Remote Electric Start / Folding Handle for
11000/8500-Watt Genmax Tri Fuel Portable Inverter With Co Sensor + Remote Electric Start / Folding Handle
4.4 out of 5 stars
stars45 ratings39 reviews
  1. 5 stars78% (35)
  2. 4 stars11% (5)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star11% (5)

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Showing 21-30 of 39 reviews
Dec 7, 2024
James2024
5 out of 5 stars review

Great features!

Recently purchased this after the Helena storm with a smaller generator just didn’t cut it. Looking forward to putting this beast to work or maybe not..don’t really want to lose power. I purchased this after a lot of research to insure I got the right one. Went with inverter as the standard generator is loud. This one has the 50 amp plug as I had added a plug and tied it to the breaker box with an interlock. Also having to find gas was a pain, so I am looking forward to getting the natural gas set up. One thing I did notice was that even though this unit comes with a 1/2 natural gas hose it has a 3/8 inlet connection on the generator for the 1/2 inch hose. I purchased a 3/4 hose and adapter for the 3/8 connection as I wanted to ensure flow was not a issue, maybe over kill.

Helpful?20UAU8PEYAUZ13591274676
Feb 12, 2025
Glen
5 out of 5 stars review

It's a Power Plant

Received on Feb11,2025. Was a little disappointed it came with no pallet because it traveled a long way. Upon opening the box they use sheets of wood to protect the top and bottom of the unit. The unit feels well built and came with a lot of accessories and features. It is big and heavy but is manageable with the handles. Everything is labeled on where everything is. Checked and double checked the unit thoroughly. Read the manual twice, added oil and it started on second attempt on Natural Gas, and will only be used to run on NG. This thing is really quiet and only have 15min runtime so I can not say on the longevity but hope it lasts for years with proper care and maintenance.

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Dec 22, 2025
Tristan A
5 out of 5 stars review

amazing generator

Bought this Genmax 5500watt generator as a backup for power outages, and it has done exactly what I needed. Assembly was quick, and it fired up easily after adding oil and gas. I was able to run my refrigerator, freezer, lights, Wi-Fi, and a few outlets without any issues.

Review from Akron Products
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Mar 7, 2025
Adam
5 out of 5 stars review

Great Initial Impressions!

We just received it yesterday by freight truck on a sturdy pallet, damage-free, (big shoutout to Pilot Air Frieght and PAF Transportation to get it to us without incident). It's packaged with a combination of sturdy cardboard, plywood and banding. I haven't fired it up for the first time yet, but I have added the oil and connected the battery, both very simple tasks with the provided oil funnel and battery quick connector. Gaining access to these areas is also simple, by removing three 8mm screws on each side. Seeing all of the sound insulation behind the panels leads me to believe that this unit will be far quieter than my previous unit. First impressions are mostly great! Nice touches include the already-mentioned battery quick-connect and oil funnel, in addition to a lighted control panel, easy to use controls and a rain/dust cover for when the generator isn't in use. Comes with pretty much everything needed to run on all three energy sources, save for an electric cord, (although it does come with one 30-amp male plug, you will need to buy a 50-amp cord if you want to use this unit to it's full potential). My only complaint is that I wish the instruction manual had better English. I understand that this product, like many others like it, came from China, so I get it and I'm not really that upset about it. If I'm able to update this review after I run it for the first time, I will do so here, but otherwise, I'm very pleased!

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Mar 14, 2025
lee79
5 out of 5 stars review

Very Happy

This is a great generator. Bought as a home backup because Edison is replacing poles and power is shut off frequently up to 8 hours. I have a 10 circuit transfer switch and it powers our whole house except hot water heater which it would but no required. It rarely kicks up to full power. I replaced an open frame generator with this because of noise issue. The Genmax is very quiet..

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Jul 21, 2025
Unhappy
1 out of 5 stars review

Stopped working after 90 mins!

The generator stopped working after about 90 minutes.

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Apr 24, 2026
Ryan G
1 out of 5 stars review

Generator won’t start.

I just purchased the generator yesterday, connected it to propane, followed the directions, and it won’t start.

Review from Akron Products
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Mar 10, 2026
Charles S
4 out of 5 stars review

Great in Cold Weather

This Generator was phenomenal in the ice cold area of detroit. I was honestly surprised, thought it was gonna blow out on me. Get a 7500 and you won’t second guess yourself again!

Review from Akron Products
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Mar 5, 2026
Sharkesh N
5 out of 5 stars review

This generator was amazing

I bought this unit a while ago and i was walking my dog zues outside in the garage and he sniffed it out from the cupboard area. Lo and behold it fired right up and had me and the family impressed at our cookout! Get it!

Review from Akron Products
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Feb 23, 2026
Jacob N
4 out of 5 stars review

Inverter Tech!!!

LOVE the inverter tech slide, i had no clue what that meant initially but it is SUPER helpful. I am from LA so we have tons of pollution, so this makes me feel better about using a generator. THIS IS CLEAN ENERGY!!

Review from Akron Products
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