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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 1-10 of 39 reviews
Oct 23, 2024
Rodger R
5 out of 5 stars review

Verified Purchase

Great Value

Delivered when promised. Truck had lift gate. Driver rolled it into my garage with pallet jack. Robust packaging and banded to a skid. Works as intended with no issues. Surprisingly quiet. I run this on natural gas only. On first attempt to start, It started on 3rd try. When you initiate starting, it will crank for about 5 seconds then stop. I guess this protects the starter. Subsequent starts it fires right up. There is no plastic cover or electrical connection cable included. The 12’ gas line hose included is 1/2” diameter. This is the best value I could find for anything comparable.

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Aug 15, 2024
LAsPCinc
5 out of 5 stars review

Tri fuel tech is a game changer

Wow! Genmax Nailed on this one – The tri fuel option is a must these days and I will never get a generator without out it. I did some shopping around and this was the only big wattage unit that came in an enclosed inverter while providing me with the running wattage that I needed to power my house. Ordered this unit back in June and the unit arrived at my house less than 3 days later- and the white glove service was impeccable. The guys unloaded the unit for me and dropped it off exactly where I needed it to go which was sweet, I was a little worried about maneuvering this beast but once it arrived the heavy duty handle bars and wheel system make it super easy to move around, youre carrying less than a quarter of the weight. I was looking at the Westinghouse unit which was a few hundred dollars more but was an open unit. The fact that I can keep this unit running outside indefinitely while having it connected to my natural gas line and have people over in my backyard without being disturbed was shocking to me.. the noise level is so low you barely notice it in the background. I also have been in talks with their support team about getting this unit connected with a transfer switch which I will be doing soon – Oscar and the genmax support team were awesome with answering all of my questions and getting back to me with emails – very happy with my purchase after 2 months of owning

Helpful?20UAU8PEYAUZ13591274676
Sep 4, 2024
htxwn
5 out of 5 stars review

This is what you need, not an open frame generator

I bought this after Beryl hit Houston and have since upgraded my gas lines and electrical to have the 50A available to connect. I pre-planned having this unit in parallel so if I do need a 2nd generator I can run these two together and get the full <3% THD at 12.5kW to my home which should be plenty. The unit is very well made, looks nice, and has incredibly low decibel noise compared to my neighbor's duromax open frame. It came with high quality spark plug (TKG) and a magnetic dip stick so both normal aftermarket swaps are already covered here. Draining the oil, changing the plugs/filters, etc. is somewhat difficult though because of the tight space inside the unit so be prepared.

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Jan 20, 2026
Wei
5 out of 5 stars review

good quality and power whole house

very good quality with all the features I wanted. I specifically love the battery charging. it has QD points, and even came with its own battery charger.

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Nov 17, 2024
BL
5 out of 5 stars review

Verified Purchase

Very happy

This thing is nice. I bought it because I have natural gas ram to the house. I’m very happy and only done the break in running my camper but have it to back the house up.

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Oct 5, 2024
Johnny
5 out of 5 stars review

Verified Purchase

Everything I hoped for.

Generator was delivered on time and perfect condition and is everything I hoped for. The tri fuel is the only way to go.

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Oct 3, 2024
Anonymous
5 out of 5 stars review

Verified Purchase

Worked flawlessly for two days straight.

Got this beauty just in time for hurricane Helen

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Nov 20, 2024
papa
5 out of 5 stars review

Verified Purchase

perfection

best purchase in a while, well designed and made machine

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Jun 4, 2025
mm
5 out of 5 stars review

Excellent generator with great features

Love this generator. We can run this generator to our service panel with a lockout switch and it can practically run the whole house (except AC and stove).

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Dec 26, 2025
MARK
1 out of 5 stars review

Quit outputting 240 volts after 6 hrs runtime

First , let me say it is a BEAUTIFUL generator ! On the initial unboxing, I was very impressed with what appeared to be a well thought out product with excellent build quality. It came well packaged and the delivery went smoothly. The generator ran great for the first 5 hours of light runtime. I ran it for about 30 minutes each month to verify I could trust it an emergency. I only ran it on propane, so I can’t comment on the generator’s gasoline output. It cranked very well each time , and made close to its rated output. Unfortunately, in the 12th month of ownership, the generator began to only output 120 volts. I made sure that the unit’s 120/240 volt rocker switch was in the 240 volt position. Luckily, I was still 6 days (! ) from the end of the 1 year warranty with Sam’s Club and they allowed me to return it. The truck they sent to return it just left today . Overall, I am disappointed because I really liked the unit, but after reading reviews on Genmax reliability , I am beginning to believe there might be more reliable generators out there. If I hadn’t checked it one last time , I would be singing a different tune right now. I will say that Sam’s Club has been good about the whole thing . They sent a large truck to get this thing, so that saved me having to transport it back to my local club.

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